fixed exception handling, bugfix and code cleanup

src/main/java/ch/ethz/seb/sebserver/gbl/api/APIMessage.java

@@ -197,6 +197,26 @@ public class APIMessage implements Serializable {
         return ErrorMessage.FIELD_VALIDATION.of(fieldName, args);
     }
 
+    public static String toHTML(final String errorMessage, final List<APIMessage> messages) {
+        final StringBuilder builder = new StringBuilder();
+        builder.append("<b>Failure: </b>").append(errorMessage).append("<br/><br/>");
+        builder.append("<b>Detail Messages:</b><br/><br/>");
+        messages.stream()
+                .forEach(message -> {
+                    builder
+                            .append("&nbsp;&nbsp;code&nbsp;:&nbsp;")
+                            .append(message.messageCode)
+                            .append("<br/>")
+                            .append("&nbsp;&nbsp;system message&nbsp;:&nbsp;")
+                            .append(HtmlUtils.htmlEscape(message.systemMessage))
+                            .append("<br/>")
+                            .append("&nbsp;&nbsp;details&nbsp;:&nbsp;")
+                            .append(HtmlUtils.htmlEscape(StringUtils.abbreviate(message.details, 100)))
+                            .append("<br/><br/>");
+                });
+        return builder.toString();
+    }
+
     public static String toHTML(final Collection<APIMessage> messages) {
         final StringBuilder builder = new StringBuilder();
         builder.append("<b>Messages:</b><br/><br/>");

src/main/java/ch/ethz/seb/sebserver/gbl/util/Utils.java

@@ -407,4 +407,11 @@ public final class Utils {
                 org.springframework.http.MediaType.APPLICATION_JSON_UTF8_VALUE);
         return headers;
     }
+
+    public static final String getErrorCauseMessage(final Exception e) {
+        if (e == null || e.getCause() == null) {
+            return Constants.EMPTY_NOTE;
+        }
+        return e.getCause().getClass().getName() + " : " + e.getCause().getMessage();
+    }
 }

src/main/java/ch/ethz/seb/sebserver/gui/content/ConfigTemplateAttributeForm.java

@@ -19,6 +19,7 @@ import org.springframework.stereotype.Component;
 
 import ch.ethz.seb.sebserver.gbl.Constants;
 import ch.ethz.seb.sebserver.gbl.api.API;
+import ch.ethz.seb.sebserver.gbl.api.EntityType;
 import ch.ethz.seb.sebserver.gbl.model.Domain;
 import ch.ethz.seb.sebserver.gbl.model.EntityKey;
 import ch.ethz.seb.sebserver.gbl.model.sebconfig.Configuration;
@@ -96,131 +97,138 @@ public class ConfigTemplateAttributeForm implements TemplateComposer {
         final EntityKey templateKey = pageContext.getParentEntityKey();
         final Long templateId = Long.valueOf(templateKey.modelId);
 
-        final ConfigurationNode template = this.restService
+        try {
-                .getBuilder(GetExamConfigNode.class)
-                .withURIVariable(API.PARAM_MODEL_ID, templateKey.modelId)
-                .call()
-                .get(pageContext::notifyError);
 
-        final EntityGrantCheck entityGrant = this.currentUser.entityGrantCheck(template);
+            final ConfigurationNode template = this.restService
-        final boolean modifyGrant = entityGrant.m();
+                    .getBuilder(GetExamConfigNode.class)
+                    .withURIVariable(API.PARAM_MODEL_ID, templateKey.modelId)
+                    .call()
+                    .onError(error -> pageContext.notifyLoadError(EntityType.CONFIGURATION_NODE, error))
+                    .getOrThrow();
 
-        // the attribute
+            final EntityGrantCheck entityGrant = this.currentUser.entityGrantCheck(template);
-        final TemplateAttribute attribute = this.restService.getBuilder(GetTemplateAttribute.class)
+            final boolean modifyGrant = entityGrant.m();
-                .withURIVariable(API.PARAM_PARENT_MODEL_ID, templateKey.modelId)
-                .withURIVariable(API.PARAM_MODEL_ID, attributeKey.modelId)
-                .call()
-                .getOrThrow();
 
-        // the follow-up configuration
+            // the attribute
-        final Configuration configuration = this.restService.getBuilder(GetConfigurations.class)
+            final TemplateAttribute attribute = this.restService.getBuilder(GetTemplateAttribute.class)
-                .withQueryParam(Configuration.FILTER_ATTR_CONFIGURATION_NODE_ID, templateKey.getModelId())
+                    .withURIVariable(API.PARAM_PARENT_MODEL_ID, templateKey.modelId)
-                .withQueryParam(Configuration.FILTER_ATTR_FOLLOWUP, Constants.TRUE_STRING)
+                    .withURIVariable(API.PARAM_MODEL_ID, attributeKey.modelId)
-                .call()
+                    .call()
-                .map(Utils::toSingleton)
+                    .onError(error -> pageContext.notifyLoadError(EntityType.CONFIGURATION_NODE, error))
-                .onError(pageContext::notifyError)
+                    .getOrThrow();
-                .getOrThrow();
 
-        // the default page layout with title
+            // the follow-up configuration
-        final Composite content = widgetFactory.defaultPageLayout(
+            final Configuration configuration = this.restService.getBuilder(GetConfigurations.class)
-                pageContext.getParent(),
+                    .withQueryParam(Configuration.FILTER_ATTR_CONFIGURATION_NODE_ID, templateKey.getModelId())
-                FORM_TITLE);
+                    .withQueryParam(Configuration.FILTER_ATTR_FOLLOWUP, Constants.TRUE_STRING)
+                    .call()
+                    .map(Utils::toSingleton)
+                    .onError(error -> pageContext.notifyLoadError(EntityType.CONFIGURATION, error))
+                    .getOrThrow();
 
-        final PageContext formContext = pageContext.copyOf(content);
+            // the default page layout with title
+            final Composite content = widgetFactory.defaultPageLayout(
+                    pageContext.getParent(),
+                    FORM_TITLE);
 
-        final boolean hasView = attribute.getOrientation() != null;
+            final PageContext formContext = pageContext.copyOf(content);
 
-        this.pageService.formBuilder(
+            final boolean hasView = attribute.getOrientation() != null;
-                formContext, 4)
-                .readonly(true) // TODO change this for next version
-                .addField(FormBuilder.text(
-                        Domain.CONFIGURATION_ATTRIBUTE.ATTR_NAME,
-                        FORM_NAME_TEXT_KEY,
-                        attribute::getName))
-                .addField(FormBuilder.text(
-                        Domain.CONFIGURATION_ATTRIBUTE.ATTR_TYPE,
-                        FORM_TYPE_TEXT_KEY,
-                        () -> this.resourceService.getAttributeTypeName(attribute)))
-                .addFieldIf(
-                        () -> hasView,
-                        () -> FormBuilder.singleSelection(
-                                Domain.ORIENTATION.ATTR_VIEW_ID,
-                                FORM_VIEW_TEXT_KEY,
-                                attribute.getViewModelId(),
-                                () -> this.resourceService.getViewResources(templateKey.modelId)))
-                .addFieldIf(
-                        () -> hasView,
-                        () -> FormBuilder.text(
-                                Domain.ORIENTATION.ATTR_GROUP_ID,
-                                FORM_GROUP_TEXT_KEY,
-                                attribute.getGroupId()))
-                .build();
 
-        widgetFactory.labelLocalized(
+            this.pageService.formBuilder(
-                content,
+                    formContext, 4)
-                CustomVariant.TEXT_H2,
+                    .readonly(true) // TODO change this for next version
-                FORM_VALUE_TEXT_KEY);
+                    .addField(FormBuilder.text(
+                            Domain.CONFIGURATION_ATTRIBUTE.ATTR_NAME,
+                            FORM_NAME_TEXT_KEY,
+                            attribute::getName))
+                    .addField(FormBuilder.text(
+                            Domain.CONFIGURATION_ATTRIBUTE.ATTR_TYPE,
+                            FORM_TYPE_TEXT_KEY,
+                            () -> this.resourceService.getAttributeTypeName(attribute)))
+                    .addFieldIf(
+                            () -> hasView,
+                            () -> FormBuilder.singleSelection(
+                                    Domain.ORIENTATION.ATTR_VIEW_ID,
+                                    FORM_VIEW_TEXT_KEY,
+                                    attribute.getViewModelId(),
+                                    () -> this.resourceService.getViewResources(templateKey.modelId)))
+                    .addFieldIf(
+                            () -> hasView,
+                            () -> FormBuilder.text(
+                                    Domain.ORIENTATION.ATTR_GROUP_ID,
+                                    FORM_GROUP_TEXT_KEY,
+                                    attribute.getGroupId()))
+                    .build();
 
-        final Composite grid = new Composite(content, SWT.NONE);
+            widgetFactory.labelLocalized(
-        grid.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false));
+                    content,
-        grid.setLayout(new GridLayout(6, true));
+                    CustomVariant.TEXT_H2,
+                    FORM_VALUE_TEXT_KEY);
 
-        final PageContext valueContext = formContext.copyOf(grid);
+            final Composite grid = new Composite(content, SWT.NONE);
+            grid.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false));
+            grid.setLayout(new GridLayout(6, true));
 
-        final Orientation defaultOrientation = getDefaultOrientation(attribute);
+            final PageContext valueContext = formContext.copyOf(grid);
-        final AttributeMapping attributeMapping = this.examConfigurationService
-                .getAttributes(attribute, defaultOrientation)
-                .getOrThrow();
-        final ViewContext viewContext = this.examConfigurationService.createViewContext(
-                valueContext,
-                configuration,
-                new View(-1L, "template", 10, 0, templateId),
-                attributeMapping,
-                1, false);
 
-        final InputFieldBuilder inputFieldBuilder = this.examConfigurationService.getInputFieldBuilder(
+            final Orientation defaultOrientation = getDefaultOrientation(attribute);
-                attribute.getConfigAttribute(),
+            final AttributeMapping attributeMapping = this.examConfigurationService
-                defaultOrientation);
+                    .getAttributes(attribute, defaultOrientation)
+                    .getOrThrow();
+            final ViewContext viewContext = this.examConfigurationService.createViewContext(
+                    valueContext,
+                    configuration,
+                    new View(-1L, "template", 10, 0, templateId),
+                    attributeMapping,
+                    1, false);
 
-        final InputField createInputField = inputFieldBuilder.createInputField(
+            final InputFieldBuilder inputFieldBuilder = this.examConfigurationService.getInputFieldBuilder(
-                content,
+                    attribute.getConfigAttribute(),
-                attribute.getConfigAttribute(),
+                    defaultOrientation);
-                viewContext);
 
-        viewContext.registerInputField(createInputField);
+            final InputField createInputField = inputFieldBuilder.createInputField(
+                    content,
+                    attribute.getConfigAttribute(),
+                    viewContext);
 
-        this.examConfigurationService.initInputFieldValues(
+            viewContext.registerInputField(createInputField);
-                configuration.id,
-                Arrays.asList(viewContext));
 
-        this.pageService.pageActionBuilder(formContext.clearEntityKeys())
+            this.examConfigurationService.initInputFieldValues(
+                    configuration.id,
+                    Arrays.asList(viewContext));
 
-                .newAction(ActionDefinition.SEB_EXAM_CONFIG_TEMPLATE_ATTR_FORM_SET_DEFAULT)
+            this.pageService.pageActionBuilder(formContext.clearEntityKeys())
-                .withEntityKey(attributeKey)
-                .withParentEntityKey(templateKey)
-                .withExec(this.examConfigurationService::resetToDefaults)
-                .ignoreMoveAwayFromEdit()
-                .publishIf(() -> modifyGrant)
 
-                .newAction(ActionDefinition.SEB_EXAM_CONFIG_TEMPLATE_ATTR_REMOVE_VIEW)
+                    .newAction(ActionDefinition.SEB_EXAM_CONFIG_TEMPLATE_ATTR_FORM_SET_DEFAULT)
-                .withEntityKey(attributeKey)
+                    .withEntityKey(attributeKey)
-                .withParentEntityKey(templateKey)
+                    .withParentEntityKey(templateKey)
-                .withExec(this.examConfigurationService::removeFromView)
+                    .withExec(this.examConfigurationService::resetToDefaults)
-                .ignoreMoveAwayFromEdit()
+                    .ignoreMoveAwayFromEdit()
-                .publishIf(() -> modifyGrant && hasView)
+                    .publishIf(() -> modifyGrant)
 
-                .newAction(ActionDefinition.SEB_EXAM_CONFIG_TEMPLATE_ATTR_ATTACH_DEFAULT_VIEW)
+                    .newAction(ActionDefinition.SEB_EXAM_CONFIG_TEMPLATE_ATTR_REMOVE_VIEW)
-                .withEntityKey(attributeKey)
+                    .withEntityKey(attributeKey)
-                .withParentEntityKey(templateKey)
+                    .withParentEntityKey(templateKey)
-                .withExec(this.examConfigurationService::attachToDefaultView)
+                    .withExec(this.examConfigurationService::removeFromView)
-                .ignoreMoveAwayFromEdit()
+                    .ignoreMoveAwayFromEdit()
-                .publishIf(() -> modifyGrant && !hasView)
+                    .publishIf(() -> modifyGrant && hasView)
 
-                .newAction(ActionDefinition.SEB_EXAM_CONFIG_TEMPLATE_ATTR_FORM_EDIT_TEMPLATE)
+                    .newAction(ActionDefinition.SEB_EXAM_CONFIG_TEMPLATE_ATTR_ATTACH_DEFAULT_VIEW)
-                .withEntityKey(templateKey)
+                    .withEntityKey(attributeKey)
-                .ignoreMoveAwayFromEdit()
+                    .withParentEntityKey(templateKey)
-                .publish();
+                    .withExec(this.examConfigurationService::attachToDefaultView)
+                    .ignoreMoveAwayFromEdit()
+                    .publishIf(() -> modifyGrant && !hasView)
 
+                    .newAction(ActionDefinition.SEB_EXAM_CONFIG_TEMPLATE_ATTR_FORM_EDIT_TEMPLATE)
+                    .withEntityKey(templateKey)
+                    .ignoreMoveAwayFromEdit()
+                    .publish();
+
+        } catch (final Exception e) {
+            pageContext.notifyUnexpectedError(e);
+        }
     }
 
     private Orientation getDefaultOrientation(final TemplateAttribute attribute) {

src/main/java/ch/ethz/seb/sebserver/gui/content/ConfigTemplateForm.java

@@ -9,13 +9,12 @@
 package ch.ethz.seb.sebserver.gui.content;
 
 import org.eclipse.swt.widgets.Composite;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Component;
 
 import ch.ethz.seb.sebserver.gbl.Constants;
 import ch.ethz.seb.sebserver.gbl.api.API;
+import ch.ethz.seb.sebserver.gbl.api.EntityType;
 import ch.ethz.seb.sebserver.gbl.model.Domain;
 import ch.ethz.seb.sebserver.gbl.model.EntityKey;
 import ch.ethz.seb.sebserver.gbl.model.sebconfig.ConfigurationNode;
@@ -53,8 +52,6 @@ import ch.ethz.seb.sebserver.gui.widget.WidgetFactory;
 @GuiProfile
 public class ConfigTemplateForm implements TemplateComposer {
 
-    private static final Logger log = LoggerFactory.getLogger(ConfigTemplateForm.class);
-
     private static final LocTextKey FORM_TITLE_NEW =
             new LocTextKey("sebserver.configtemplate.form.title.new");
     private static final LocTextKey FORM_TITLE =
@@ -118,14 +115,8 @@ public class ConfigTemplateForm implements TemplateComposer {
                         .getBuilder(GetExamConfigNode.class)
                         .withURIVariable(API.PARAM_MODEL_ID, entityKey.modelId)
                         .call()
-                        .get(pageContext::notifyError);
+                        .onError(error -> pageContext.notifyLoadError(EntityType.CONFIGURATION_NODE, error))
-
+                        .getOrThrow();
-        if (examConfig == null) {
-            log.error("Failed to get ConfigurationNode for Template. "
-                    + "Error was notified to the User. "
-                    + "See previous logs for more infomation");
-            return;
-        }
 
         final EntityGrantCheck entityGrant = this.currentUser.entityGrantCheck(examConfig);
         final boolean writeGrant = entityGrant.w();

src/main/java/ch/ethz/seb/sebserver/gui/content/ExamForm.java

@@ -87,6 +87,10 @@ public class ExamForm implements TemplateComposer {
 
     private static final Logger log = LoggerFactory.getLogger(ExamForm.class);
 
+    public static final LocTextKey EXAM_FORM_TITLE_KEY =
+            new LocTextKey("sebserver.exam.form.title");
+    public static final LocTextKey EXAM_FORM_TITLE_IMPORT_KEY =
+            new LocTextKey("sebserver.exam.form.title.import");
     private static final LocTextKey CONFIG_EMPTY_LIST_MESSAGE =
             new LocTextKey("sebserver.exam.configuration.list.empty");
     private static final LocTextKey INDICATOR_EMPTY_LIST_MESSAGE =
@@ -145,6 +149,9 @@ public class ExamForm implements TemplateComposer {
     private final static LocTextKey CONSISTENCY_MESSAGE_MISSING_SEB_RESTRICTION =
             new LocTextKey("sebserver.exam.consistency.missing-seb-restriction");
 
+    private final static LocTextKey SEB_RESTRICTION_ERROR =
+            new LocTextKey("sebserver.error.exam.seb.restriction");
+
     private final Map<String, LocTextKey> consistencyMessageMapping;
 
     private final static LocTextKey CONFIRM_MESSAGE_REMOVE_CONFIG =
@@ -199,15 +206,8 @@ public class ExamForm implements TemplateComposer {
         final Exam exam = (importFromQuizData
                 ? createExamFromQuizData(pageContext)
                 : getExistingExam(pageContext))
-                        .get(pageContext::notifyError);
+                        .onError(error -> pageContext.notifyLoadError(EntityType.EXAM, error))
-
+                        .getOrThrow();
-        if (exam == null) {
-            log.error(
-                    "Failed to get Exam. "
-                            + "Error was notified to the User. "
-                            + "See previous logs for more infomation");
-            return;
-        }
 
         // new PageContext with actual EntityKey
         final PageContext formContext = pageContext.withEntityKey(exam.getEntityKey());
@@ -221,10 +221,9 @@ public class ExamForm implements TemplateComposer {
         }
 
         // the default page layout with title
-        final LocTextKey titleKey = new LocTextKey(
+        final LocTextKey titleKey = importFromQuizData
-                importFromQuizData
+                ? EXAM_FORM_TITLE_IMPORT_KEY
-                        ? "sebserver.exam.form.title.import"
+                : EXAM_FORM_TITLE_KEY;
-                        : "sebserver.exam.form.title");
         final Composite content = this.widgetFactory.defaultPageLayout(
                 formContext.getParent(),
                 titleKey);
@@ -579,7 +578,10 @@ public class ExamForm implements TemplateComposer {
     }
 
     private PageAction setSebRestriction(final PageAction action, final boolean sebRestriction) {
-        return setSebRestriction(action, sebRestriction, t -> action.pageContext().notifyError(t));
+        return setSebRestriction(
+                action,
+                sebRestriction,
+                error -> action.pageContext().notifyError(SEB_RESTRICTION_ERROR, error));
     }
 
     private PageAction setSebRestriction(
@@ -685,7 +687,7 @@ public class ExamForm implements TemplateComposer {
                 .getBuilder(DeleteExamConfigMapping.class)
                 .withURIVariable(API.PARAM_MODEL_ID, examConfigMappingKey.modelId)
                 .call()
-                .onError(error -> action.pageContext().notifyError(error));
+                .onError(error -> action.pageContext().notifyRemoveError(EntityType.EXAM_CONFIGURATION_MAP, error));
         return action;
     }
 
@@ -693,8 +695,7 @@ public class ExamForm implements TemplateComposer {
         final EntityKey entityKey = pageContext.getEntityKey();
         return this.restService.getBuilder(GetExam.class)
                 .withURIVariable(API.PARAM_MODEL_ID, entityKey.modelId)
-                .call()
+                .call();
-                .onError(error -> pageContext.notifyError(error));
     }
 
     private Result<Exam> createExamFromQuizData(final PageContext pageContext) {
@@ -705,7 +706,7 @@ public class ExamForm implements TemplateComposer {
                 .withQueryParam(QuizData.QUIZ_ATTR_LMS_SETUP_ID, parentEntityKey.modelId)
                 .call()
                 .map(quizzData -> new Exam(quizzData))
-                .onError(error -> pageContext.notifyError(error));
+                .onError(error -> pageContext.notifyLoadError(EntityType.EXAM, error));
     }
 
     private String indicatorTypeName(final Indicator indicator) {

src/main/java/ch/ethz/seb/sebserver/gui/content/ExamToConfigBindPopup.java

@@ -18,6 +18,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import ch.ethz.seb.sebserver.gbl.api.API;
+import ch.ethz.seb.sebserver.gbl.api.EntityType;
 import ch.ethz.seb.sebserver.gbl.model.Domain;
 import ch.ethz.seb.sebserver.gbl.model.EntityKey;
 import ch.ethz.seb.sebserver.gbl.model.exam.Exam;
@@ -170,7 +171,8 @@ final class ExamToConfigBindPopup {
                             .getBuilder(GetExam.class)
                             .withURIVariable(API.PARAM_MODEL_ID, parentEntityKey.modelId)
                             .call()
-                            .get(this.pageContext::notifyError)
+                            .onError(error -> this.pageContext.notifyLoadError(EntityType.EXAM, error))
+                            .getOrThrow()
                     : null;
 
             // get data or create new. Handle error if happen
@@ -180,7 +182,10 @@ final class ExamToConfigBindPopup {
                             .getBuilder(GetExamConfigMapping.class)
                             .withURIVariable(API.PARAM_MODEL_ID, entityKey.modelId)
                             .call()
-                            .get(this.pageContext::notifyError);
+                            .onError(error -> this.pageContext.notifyLoadError(
+                                    EntityType.EXAM_CONFIGURATION_MAP,
+                                    error))
+                            .getOrThrow();
 
             // new PageContext with actual EntityKey
             final PageContext formContext = this.pageContext.withEntityKey(examConfigurationMap.getEntityKey());

src/main/java/ch/ethz/seb/sebserver/gui/content/IndicatorForm.java

@@ -9,12 +9,11 @@
 package ch.ethz.seb.sebserver.gui.content;
 
 import org.eclipse.swt.widgets.Composite;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Component;
 
 import ch.ethz.seb.sebserver.gbl.api.API;
+import ch.ethz.seb.sebserver.gbl.api.EntityType;
 import ch.ethz.seb.sebserver.gbl.model.Domain;
 import ch.ethz.seb.sebserver.gbl.model.EntityKey;
 import ch.ethz.seb.sebserver.gbl.model.exam.Exam;
@@ -41,8 +40,6 @@ import ch.ethz.seb.sebserver.gui.widget.WidgetFactory;
 @GuiProfile
 public class IndicatorForm implements TemplateComposer {
 
-    private static final Logger log = LoggerFactory.getLogger(IndicatorForm.class);
-
     private static final LocTextKey NEW_INDICATOR_TILE_TEXT_KEY =
             new LocTextKey("sebserver.exam.indicator.form.title.new");
     private static final LocTextKey INDICATOR_TILE_TEXT_KEY =
@@ -82,7 +79,8 @@ public class IndicatorForm implements TemplateComposer {
                 .getBuilder(GetExam.class)
                 .withURIVariable(API.PARAM_MODEL_ID, parentEntityKey.modelId)
                 .call()
-                .get(pageContext::notifyError);
+                .onError(error -> pageContext.notifyLoadError(EntityType.EXAM, error))
+                .getOrThrow();
 
         // get data or create new. Handle error if happen
         final Indicator indicator = (isNew)
@@ -91,14 +89,8 @@ public class IndicatorForm implements TemplateComposer {
                         .getBuilder(GetIndicator.class)
                         .withURIVariable(API.PARAM_MODEL_ID, entityKey.modelId)
                         .call()
-                        .get(pageContext::notifyError);
+                        .onError(error -> pageContext.notifyLoadError(EntityType.INDICATOR, error))
-
+                        .getOrThrow();
-        if (indicator == null) {
-            log.error("Failed to get Indicator. "
-                    + "Error was notified to the User. "
-                    + "See previous logs for more infomation");
-            return;
-        }
 
         // new PageContext with actual EntityKey
         final PageContext formContext = pageContext.withEntityKey(indicator.getEntityKey());

src/main/java/ch/ethz/seb/sebserver/gui/content/InstitutionForm.java

@@ -9,8 +9,6 @@
 package ch.ethz.seb.sebserver.gui.content;
 
 import org.eclipse.swt.widgets.Composite;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Component;
 
@@ -44,6 +42,11 @@ import ch.ethz.seb.sebserver.gui.widget.WidgetFactory;
 @GuiProfile
 public class InstitutionForm implements TemplateComposer {
 
+    private static final LocTextKey TITLE_TEXT_KEY =
+            new LocTextKey("sebserver.institution.form.title");
+    private static final LocTextKey NEW_TITLE_TEXT_KEY =
+            new LocTextKey("sebserver.institution.form.title.new");
+
     private static final LocTextKey FORM_LOGO_IMAGE_TEXT_KEY =
             new LocTextKey("sebserver.institution.form.logoImage");
     private static final LocTextKey FORM_URL_SUFFIX_TEXT_KEY =
@@ -51,8 +54,6 @@ public class InstitutionForm implements TemplateComposer {
     private static final LocTextKey FORM_NAME_TEXT_KEY =
             new LocTextKey("sebserver.institution.form.name");
 
-    private static final Logger log = LoggerFactory.getLogger(InstitutionForm.class);
-
     private final PageService pageService;
     private final RestService restService;
     private final CurrentUser currentUser;
@@ -80,14 +81,8 @@ public class InstitutionForm implements TemplateComposer {
                         .getBuilder(GetInstitution.class)
                         .withURIVariable(API.PARAM_MODEL_ID, entityKey.modelId)
                         .call()
-                        .get(pageContext::notifyError);
+                        .onError(error -> pageContext.notifyLoadError(EntityType.INSTITUTION, error))
-
+                        .getOrThrow();
-        if (institution == null) {
-            log.error("Failed to get Institution. "
-                    + "Error was notified to the User. "
-                    + "See previous logs for more infomation");
-            return;
-        }
 
         final EntityGrantCheck instGrant = this.currentUser.entityGrantCheck(institution);
         final boolean writeGrant = instGrant.w();
@@ -98,16 +93,10 @@ public class InstitutionForm implements TemplateComposer {
         // new PageContext with actual EntityKey
         final PageContext formContext = pageContext.withEntityKey(institution.getEntityKey());
 
-        if (log.isDebugEnabled()) {
-            log.debug("Institution Form for Institution {}", institution.name);
-        }
-
         // the default page layout with interactive title
-        final LocTextKey titleKey = new LocTextKey(
+        final LocTextKey titleKey = isNew
-                (isNew)
+                ? NEW_TITLE_TEXT_KEY
-                        ? "sebserver.institution.form.title.new"
+                : TITLE_TEXT_KEY;
-                        : "sebserver.institution.form.title",
-                institution.name);
         final Composite content = widgetFactory.defaultPageLayout(
                 formContext.getParent(),
                 titleKey);

src/main/java/ch/ethz/seb/sebserver/gui/content/LmsSetupForm.java

@@ -13,13 +13,12 @@ import java.util.function.Function;
 
 import org.apache.commons.lang3.StringUtils;
 import org.eclipse.swt.widgets.Composite;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Component;
 
 import ch.ethz.seb.sebserver.gbl.Constants;
 import ch.ethz.seb.sebserver.gbl.api.API;
+import ch.ethz.seb.sebserver.gbl.api.EntityType;
 import ch.ethz.seb.sebserver.gbl.model.Domain;
 import ch.ethz.seb.sebserver.gbl.model.EntityKey;
 import ch.ethz.seb.sebserver.gbl.model.institution.LmsSetup;
@@ -61,7 +60,10 @@ import ch.ethz.seb.sebserver.gui.widget.WidgetFactory;
 @GuiProfile
 public class LmsSetupForm implements TemplateComposer {
 
-    private static final Logger log = LoggerFactory.getLogger(LmsSetupForm.class);
+    private static final LocTextKey TITLE_TEXT_KEY =
+            new LocTextKey("sebserver.lmssetup.form.title");
+    private static final LocTextKey NEW_TITLE_TEXT_KEY =
+            new LocTextKey("sebserver.lmssetup.form.title.new");
 
     private static final LocTextKey FORM_SECRET_LMS_TEXT_KEY =
             new LocTextKey("sebserver.lmssetup.form.secret.lms");
@@ -120,23 +122,15 @@ public class LmsSetupForm implements TemplateComposer {
                         .getBuilder(GetLmsSetup.class)
                         .withURIVariable(API.PARAM_MODEL_ID, entityKey.modelId)
                         .call()
-                        .get(pageContext::notifyError);
+                        .onError(error -> pageContext.notifyLoadError(EntityType.LMS_SETUP, error))
-
+                        .getOrThrow();
-        if (lmsSetup == null) {
-            log.error(
-                    "Failed to get LmsSetup. "
-                            + "Error was notified to the User. "
-                            + "See previous logs for more infomation");
-            return;
-        }
 
         // new PageContext with actual EntityKey
         final PageContext formContext = pageContext.withEntityKey(lmsSetup.getEntityKey());
         // the default page layout with title
-        final LocTextKey titleKey = new LocTextKey(
+        final LocTextKey titleKey = isNotNew.getAsBoolean()
-                isNotNew.getAsBoolean()
+                ? TITLE_TEXT_KEY
-                        ? "sebserver.lmssetup.form.title"
+                : NEW_TITLE_TEXT_KEY;
-                        : "sebserver.lmssetup.form.title.new");
         final Composite content = widgetFactory.defaultPageLayout(
                 formContext.getParent(),
                 titleKey);
@@ -302,7 +296,7 @@ public class LmsSetupForm implements TemplateComposer {
                         API.PARAM_MODEL_ID,
                         action.pageContext().getAttribute(AttributeKeys.ENTITY_ID))
                 .call()
-                .onError(t -> action.pageContext().notifyError(t));
+                .onError(error -> action.pageContext().notifyActivationError(EntityType.LMS_SETUP, error));
 
         return testLmsSetup;
     }

src/main/java/ch/ethz/seb/sebserver/gui/content/SebClientConfigForm.java

@@ -11,13 +11,12 @@ package ch.ethz.seb.sebserver.gui.content;
 import org.eclipse.rap.rwt.RWT;
 import org.eclipse.rap.rwt.client.service.UrlLauncher;
 import org.eclipse.swt.widgets.Composite;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Component;
 
 import ch.ethz.seb.sebserver.gbl.api.API;
+import ch.ethz.seb.sebserver.gbl.api.EntityType;
 import ch.ethz.seb.sebserver.gbl.model.Domain;
 import ch.ethz.seb.sebserver.gbl.model.EntityKey;
 import ch.ethz.seb.sebserver.gbl.model.sebconfig.SebClientConfig;
@@ -49,8 +48,6 @@ import ch.ethz.seb.sebserver.gui.widget.WidgetFactory;
 @GuiProfile
 public class SebClientConfigForm implements TemplateComposer {
 
-    private static final Logger log = LoggerFactory.getLogger(LmsSetupForm.class);
-
     private static final LocTextKey FORM_TITLE_NEW =
             new LocTextKey("sebserver.clientconfig.form.title.new");
     private static final LocTextKey FORM_TITLE =
@@ -106,14 +103,8 @@ public class SebClientConfigForm implements TemplateComposer {
                         .getBuilder(GetClientConfig.class)
                         .withURIVariable(API.PARAM_MODEL_ID, entityKey.modelId)
                         .call()
-                        .get(pageContext::notifyError);
+                        .onError(error -> pageContext.notifyLoadError(EntityType.SEB_CLIENT_CONFIGURATION, error))
-
+                        .getOrThrow();
-        if (clientConfig == null) {
-            log.error("Failed to get SebClientConfig. "
-                    + "Error was notified to the User. "
-                    + "See previous logs for more infomation");
-            return;
-        }
 
         final EntityGrantCheck entityGrant = this.currentUser.entityGrantCheck(clientConfig);
         final boolean writeGrant = entityGrant.w();

src/main/java/ch/ethz/seb/sebserver/gui/content/SebExamConfigImportPopup.java

@@ -20,6 +20,7 @@ import org.eclipse.swt.widgets.Control;
 
 import ch.ethz.seb.sebserver.gbl.api.API;
 import ch.ethz.seb.sebserver.gbl.api.APIMessage;
+import ch.ethz.seb.sebserver.gbl.api.EntityType;
 import ch.ethz.seb.sebserver.gbl.model.Domain;
 import ch.ethz.seb.sebserver.gbl.model.EntityKey;
 import ch.ethz.seb.sebserver.gbl.model.sebconfig.Configuration;
@@ -177,13 +178,16 @@ final class SebExamConfigImportPopup {
                                         } else {
                                             formHandle
                                                     .getContext()
-                                                    .notifyError(error);
+                                                    .notifyImportError(EntityType.CONFIGURATION_NODE, error);
                                         }
                                     });
                             return true;
                         }
 
-                        formHandle.getContext().notifyError(configuration.getError());
+                        formHandle.getContext().notifyError(
+                                SebExamConfigPropForm.FORM_TITLE,
+                                configuration.getError());
+
                         return true;
                     }
                 } else {
@@ -195,7 +199,7 @@ final class SebExamConfigImportPopup {
 
             return false;
         } catch (final Exception e) {
-            formHandle.getContext().notifyError(e);
+            formHandle.getContext().notifyError(SebExamConfigPropForm.FORM_TITLE, e);
             return true;
         }
     }

src/main/java/ch/ethz/seb/sebserver/gui/content/SebExamConfigPropForm.java

@@ -18,8 +18,6 @@ import org.eclipse.rap.rwt.client.service.UrlLauncher;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Text;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Component;
@@ -71,8 +69,6 @@ import ch.ethz.seb.sebserver.gui.widget.WidgetFactory.CustomVariant;
 @GuiProfile
 public class SebExamConfigPropForm implements TemplateComposer {
 
-    private static final Logger log = LoggerFactory.getLogger(SebExamConfigPropForm.class);
-
     static final LocTextKey FORM_TITLE_NEW =
             new LocTextKey("sebserver.examconfig.form.title.new");
     static final LocTextKey FORM_TITLE =
@@ -139,13 +135,8 @@ public class SebExamConfigPropForm implements TemplateComposer {
                         .getBuilder(GetExamConfigNode.class)
                         .withURIVariable(API.PARAM_MODEL_ID, entityKey.modelId)
                         .call()
-                        .get(pageContext::notifyError);
+                        .onError(error -> pageContext.notifyLoadError(EntityType.CONFIGURATION_NODE, error))
-        if (examConfig == null) {
+                        .getOrThrow();
-            log.error("Failed to get ConfigurationNode. "
-                    + "Error was notified to the User. "
-                    + "See previous logs for more infomation");
-            return;
-        }
 
         final EntityGrantCheck entityGrant = this.currentUser.entityGrantCheck(examConfig);
         final boolean writeGrant = entityGrant.w();

src/main/java/ch/ethz/seb/sebserver/gui/content/SebExamConfigSettingsForm.java

@@ -102,7 +102,7 @@ public class SebExamConfigSettingsForm implements TemplateComposer {
             final ConfigurationNode configNode = this.restService.getBuilder(GetExamConfigNode.class)
                     .withURIVariable(API.PARAM_MODEL_ID, entityKey.modelId)
                     .call()
-                    .onError(pageContext::notifyError)
+                    .onError(error -> pageContext.notifyLoadError(EntityType.CONFIGURATION_NODE, error))
                     .getOrThrow();
 
             final Configuration configuration = this.restService.getBuilder(GetConfigurations.class)
@@ -110,12 +110,12 @@ public class SebExamConfigSettingsForm implements TemplateComposer {
                     .withQueryParam(Configuration.FILTER_ATTR_FOLLOWUP, Constants.TRUE_STRING)
                     .call()
                     .map(Utils::toSingleton)
-                    .onError(pageContext::notifyError)
+                    .onError(error -> pageContext.notifyLoadError(EntityType.CONFIGURATION, error))
                     .getOrThrow();
 
             final AttributeMapping attributes = this.examConfigurationService
                     .getAttributes(configNode.templateId)
-                    .onError(pageContext::notifyError)
+                    .onError(error -> pageContext.notifyLoadError(EntityType.CONFIGURATION_ATTRIBUTE, error))
                     .getOrThrow();
 
             final boolean readonly = pageContext.isReadonly() || configNode.status == ConfigurationStatus.IN_USE;
@@ -195,11 +195,11 @@ public class SebExamConfigSettingsForm implements TemplateComposer {
                     .publish();
 
         } catch (final RuntimeException e) {
-            log.error("Unexpected error while trying to fetch exam configuration data and create views", e);
+            pageContext.notifyUnexpectedError(e);
             throw e;
         } catch (final Exception e) {
             log.error("Unexpected error while trying to fetch exam configuration data and create views", e);
-            pageContext.notifyError(e);
+            pageContext.notifyError(SebExamConfigPropForm.FORM_TITLE, e);
         }
     }
 

src/main/java/ch/ethz/seb/sebserver/gui/content/UserAccountChangePasswordForm.java

@@ -15,6 +15,7 @@ import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Component;
 
 import ch.ethz.seb.sebserver.gbl.api.API;
+import ch.ethz.seb.sebserver.gbl.api.EntityType;
 import ch.ethz.seb.sebserver.gbl.model.Domain;
 import ch.ethz.seb.sebserver.gbl.model.EntityKey;
 import ch.ethz.seb.sebserver.gbl.model.user.PasswordChange;
@@ -46,6 +47,7 @@ import ch.ethz.seb.sebserver.gui.widget.WidgetFactory;
  * password that is also required must match the administrators current password. */
 public class UserAccountChangePasswordForm implements TemplateComposer {
 
+    private static final String FORM_TITLE_KEY = "sebserver.useraccount.form.pwchange.title";
     private static final LocTextKey FORM_PASSWORD_NEW_TEXT_KEY =
             new LocTextKey("sebserver.useraccount.form.password.new");
     private static final LocTextKey FORM_PASSWORD_NEW_CONFIRM_TEXT_KEY =
@@ -79,11 +81,12 @@ public class UserAccountChangePasswordForm implements TemplateComposer {
                 .getBuilder(GetUserAccount.class)
                 .withURIVariable(API.PARAM_MODEL_ID, entityKey.modelId)
                 .call()
-                .get(pageContext::notifyError);
+                .onError(error -> pageContext.notifyLoadError(EntityType.USER, error))
+                .getOrThrow();
 
         final Composite content = widgetFactory.defaultPageLayout(
                 pageContext.getParent(),
-                new LocTextKey("sebserver.useraccount.form.pwchange.title", userInfo.username));
+                new LocTextKey(FORM_TITLE_KEY, userInfo.username));
 
         final boolean ownAccount = this.currentUser.get().uuid.equals(entityKey.getModelId());
 

src/main/java/ch/ethz/seb/sebserver/gui/content/UserAccountForm.java

@@ -12,8 +12,6 @@ import java.util.function.BooleanSupplier;
 
 import org.apache.tomcat.util.buf.StringUtils;
 import org.eclipse.swt.widgets.Composite;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Component;
 
@@ -56,23 +54,26 @@ import ch.ethz.seb.sebserver.gui.widget.WidgetFactory;
 @GuiProfile
 public class UserAccountForm implements TemplateComposer {
 
-    private static final Logger log = LoggerFactory.getLogger(UserAccountForm.class);
+    static final LocTextKey TITLE_TEXT_KEY =
+            new LocTextKey("sebserver.useraccount.form.title");
+    static final LocTextKey NEW_TITLE_TEXT_KEY =
+            new LocTextKey("sebserver.useraccount.form.title.new");
 
-    private static final LocTextKey FORM_PASSWORD_CONFIRM_TEXT_KEY =
+    static final LocTextKey FORM_PASSWORD_CONFIRM_TEXT_KEY =
             new LocTextKey("sebserver.useraccount.form.password.confirm");
-    private static final LocTextKey FORM_PASSWORD_TEXT_KEY =
+    static final LocTextKey FORM_PASSWORD_TEXT_KEY =
             new LocTextKey("sebserver.useraccount.form.password");
-    private static final LocTextKey FORM_ROLES_TEXT_KEY =
+    static final LocTextKey FORM_ROLES_TEXT_KEY =
             new LocTextKey("sebserver.useraccount.form.roles");
-    private static final LocTextKey FORM_TIMEZONE_TEXT_KEY =
+    static final LocTextKey FORM_TIMEZONE_TEXT_KEY =
             new LocTextKey("sebserver.useraccount.form.timezone");
-    private static final LocTextKey FORM_MAIL_TEXT_KEY =
+    static final LocTextKey FORM_MAIL_TEXT_KEY =
             new LocTextKey("sebserver.useraccount.form.mail");
-    private static final LocTextKey FORM_USERNAME_TEXT_KEY =
+    static final LocTextKey FORM_USERNAME_TEXT_KEY =
             new LocTextKey("sebserver.useraccount.form.username");
-    private static final LocTextKey FORM_NAME_TEXT_KEY =
+    static final LocTextKey FORM_NAME_TEXT_KEY =
             new LocTextKey("sebserver.useraccount.form.name");
-    private static final LocTextKey FORM_INSTITUTION_TEXT_KEY =
+    static final LocTextKey FORM_INSTITUTION_TEXT_KEY =
             new LocTextKey("sebserver.useraccount.form.institution");
 
     private final PageService pageService;
@@ -110,15 +111,8 @@ public class UserAccountForm implements TemplateComposer {
                         .getBuilder(GetUserAccount.class)
                         .withURIVariable(API.PARAM_MODEL_ID, entityKey.modelId)
                         .call()
-                        .get(pageContext::notifyError);
+                        .onError(error -> pageContext.notifyLoadError(EntityType.USER, error))
-
+                        .getOrThrow();
-        if (userAccount == null) {
-            log.error(
-                    "Failed to get UserAccount. "
-                            + "Error was notified to the User. "
-                            + "See previous logs for more infomation");
-            return;
-        }
 
         final boolean roleBasedEditGrant = Privilege.hasRoleBasedUserAccountEditGrant(userAccount, currentUser.get());
         // new PageContext with actual EntityKey
@@ -138,16 +132,10 @@ public class UserAccountForm implements TemplateComposer {
                 .map(inst -> inst.active)
                 .getOr(false);
 
-        if (log.isDebugEnabled()) {
-            log.debug("UserAccount Form for user {}", userAccount.getName());
-        }
-
         // the default page layout with title
-        final LocTextKey titleKey = new LocTextKey(
+        final LocTextKey titleKey = isNotNew.getAsBoolean()
-                isNotNew.getAsBoolean()
+                ? TITLE_TEXT_KEY
-                        ? "sebserver.useraccount.form.title"
+                : NEW_TITLE_TEXT_KEY;
-                        : "sebserver.useraccount.form.title.new",
-                userAccount.getUsername());
         final Composite content = widgetFactory.defaultPageLayout(
                 formContext.getParent(),
                 titleKey);

src/main/java/ch/ethz/seb/sebserver/gui/form/FormHandle.java

@@ -14,7 +14,9 @@ import java.util.function.Predicate;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import ch.ethz.seb.sebserver.gbl.Constants;
 import ch.ethz.seb.sebserver.gbl.api.APIMessage;
+import ch.ethz.seb.sebserver.gbl.api.EntityType;
 import ch.ethz.seb.sebserver.gbl.model.Entity;
 import ch.ethz.seb.sebserver.gbl.util.Result;
 import ch.ethz.seb.sebserver.gbl.util.Utils;
@@ -133,8 +135,16 @@ public class FormHandle<T extends Entity> {
                             fieldAccessor -> showValidationError(fieldAccessor, fve)));
             return true;
         } else {
-            log.error("Unexpected error while trying to post form: ", error);
+            log.error("Unexpected error while trying to post form: {}", error.getMessage());
-            this.pageContext.notifyError(error);
+            final EntityType resultType = this.post.getResultType();
+            if (resultType != null) {
+                this.pageContext.notifySaveError(resultType, error);
+            } else {
+                this.pageContext.notifyError(
+                        new LocTextKey(PageContext.GENERIC_SAVE_ERROR_TEXT_KEY, Constants.EMPTY_NOTE),
+                        error);
+            }
+
             return false;
         }
     }

src/main/java/ch/ethz/seb/sebserver/gui/service/ResourceService.java

@@ -286,6 +286,10 @@ public class ResourceService {
                 .collect(Collectors.toList());
     }
 
+    public static LocTextKey getEntityTypeNameKey(final EntityType type) {
+        return new LocTextKey(ENTITY_TYPE_PREFIX + type.name());
+    }
+
     public String getEntityTypeName(final EntityType type) {
         if (type == null) {
             return Constants.EMPTY_NOTE;

src/main/java/ch/ethz/seb/sebserver/gui/service/examconfig/impl/AbstractTableFieldBuilder.java

@@ -233,6 +233,9 @@ public abstract class AbstractTableFieldBuilder implements InputFieldBuilder {
             }
 
             ConfigurationAttribute attr = tableContext.getAttribute(value.attributeId);
+            if (attr == null) {
+                return false;
+            }
             while (attr.parentId != null) {
                 if (attribute.id.equals(attr.parentId)) {
                     return true;

src/main/java/ch/ethz/seb/sebserver/gui/service/examconfig/impl/ExamConfigurationServiceImpl.java

@@ -28,6 +28,7 @@ import ch.ethz.seb.sebserver.gbl.Constants;
 import ch.ethz.seb.sebserver.gbl.api.API;
 import ch.ethz.seb.sebserver.gbl.api.APIMessage;
 import ch.ethz.seb.sebserver.gbl.api.APIMessage.ErrorMessage;
+import ch.ethz.seb.sebserver.gbl.api.EntityType;
 import ch.ethz.seb.sebserver.gbl.api.JSONMapper;
 import ch.ethz.seb.sebserver.gbl.model.EntityKey;
 import ch.ethz.seb.sebserver.gbl.model.sebconfig.Configuration;
@@ -373,7 +374,7 @@ public class ExamConfigurationServiceImpl implements ExamConfigurationService {
                 }
 
             } catch (final Exception e) {
-                this.pageContext.notifyError(e);
+                this.pageContext.notifySaveError(EntityType.CONFIGURATION_VALUE, e);
             }
         }
 

src/main/java/ch/ethz/seb/sebserver/gui/service/page/PageContext.java

@@ -15,7 +15,9 @@ import org.eclipse.swt.widgets.Shell;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import ch.ethz.seb.sebserver.gbl.api.EntityType;
 import ch.ethz.seb.sebserver.gbl.model.EntityKey;
+import ch.ethz.seb.sebserver.gui.service.ResourceService;
 import ch.ethz.seb.sebserver.gui.service.i18n.I18nSupport;
 import ch.ethz.seb.sebserver.gui.service.i18n.LocTextKey;
 
@@ -44,6 +46,17 @@ public interface PageContext {
 
     }
 
+    /** The resource-bundle key of the generic load entity error message. */
+    public static final String GENERIC_LOAD_ERROR_TEXT_KEY = "sebserver.error.get.entity";
+    public static final String GENERIC_REMOVE_ERROR_TEXT_KEY = "sebserver.error.remove.entity";
+    public static final String GENERIC_SAVE_ERROR_TEXT_KEY = "sebserver.error.save.entity";
+    public static final String GENERIC_ACTIVATE_ERROR_TEXT_KEY = "sebserver.error.activate.entity";
+    public static final String GENERIC_IMPORT_ERROR_TEXT_KEY = "sebserver.error.import";
+    public static final LocTextKey SUCCESS_MSG_TITLE =
+            new LocTextKey("sebserver.page.message");
+    public static final LocTextKey UNEXPECTED_ERROR_KEY =
+            new LocTextKey("sebserver.error.action.unexpected.message");
+
     /** Get the I18nSupport service
      *
      * @return the I18nSupport service */
@@ -187,14 +200,74 @@ public interface PageContext {
      *
      * @param errorMessage the error message to display
      * @param error the error as Exception */
-    void notifyError(String errorMessage, Exception error);
+    void notifyError(LocTextKey errorMessage, Exception error);
 
-    /** Shows an error message to the user with the message of the given Exception.
+    /** Notify a generic load error to the user by pop-up
-     * This mainly is used for debugging so far
      *
-     * @param error the Exception to display
+     * @param entityType the type of the entity
-     * @return adaption to be used with functional approaches */
+     * @param error the original error */
-    <T> T notifyError(Exception error);
+    default void notifyLoadError(final EntityType entityType, final Exception error) {
+        notifyError(
+                new LocTextKey(
+                        GENERIC_LOAD_ERROR_TEXT_KEY,
+                        getI18nSupport().getText(ResourceService.getEntityTypeNameKey(entityType))),
+                error);
+    }
+
+    /** Notify a generic remove error to the user by pop-up
+     *
+     * @param entityType the type of the entity
+     * @param error the original error */
+    default void notifyRemoveError(final EntityType entityType, final Exception error) {
+        notifyError(
+                new LocTextKey(
+                        GENERIC_REMOVE_ERROR_TEXT_KEY,
+                        getI18nSupport().getText(ResourceService.getEntityTypeNameKey(entityType))),
+                error);
+    }
+
+    /** Notify a generic save error to the user by pop-up
+     *
+     * @param entityType the type of the entity
+     * @param error the original error */
+    default void notifySaveError(final EntityType entityType, final Exception error) {
+        notifyError(
+                new LocTextKey(
+                        GENERIC_SAVE_ERROR_TEXT_KEY,
+                        getI18nSupport().getText(ResourceService.getEntityTypeNameKey(entityType))),
+                error);
+    }
+
+    /** Notify a generic activation error to the user by pop-up
+     *
+     * @param entityType the type of the entity
+     * @param error the original error */
+    default void notifyActivationError(final EntityType entityType, final Exception error) {
+        notifyError(
+                new LocTextKey(
+                        GENERIC_ACTIVATE_ERROR_TEXT_KEY,
+                        getI18nSupport().getText(ResourceService.getEntityTypeNameKey(entityType))),
+                error);
+    }
+
+    /** Notify a generic import error to the user by pop-up
+     *
+     * @param entityType the type of the entity
+     * @param error the original error */
+    default void notifyImportError(final EntityType entityType, final Exception error) {
+        notifyError(
+                new LocTextKey(
+                        GENERIC_IMPORT_ERROR_TEXT_KEY,
+                        getI18nSupport().getText(ResourceService.getEntityTypeNameKey(entityType))),
+                error);
+    }
+
+    /** Notify a generic unexpected error to the user by pop-up
+     *
+     * @param error the original error */
+    default void notifyUnexpectedError(final Exception error) {
+        notifyError(UNEXPECTED_ERROR_KEY, error);
+    }
 
     /** Publish and shows a message to the user with the given localized title and
      * localized message. The message text can also be HTML text as far as RWT supports it.

src/main/java/ch/ethz/seb/sebserver/gui/service/page/PageService.java

@@ -313,12 +313,13 @@ public interface PageService {
                 final Class<? extends RestCall<T>> restCallType) {
 
             this.exec = action -> {
+                final PageContext pageContext = action.pageContext();
                 restService.getBuilder(restCallType)
                         .withURIVariable(
                                 API.PARAM_MODEL_ID,
                                 action.pageContext().getAttribute(AttributeKeys.ENTITY_ID))
                         .call()
-                        .onError(t -> action.pageContext().notifyError(t));
+                        .onError(pageContext::notifyUnexpectedError);
                 return action;
             };
 

src/main/java/ch/ethz/seb/sebserver/gui/service/page/impl/PageAction.java

@@ -20,6 +20,7 @@ import org.slf4j.LoggerFactory;
 import ch.ethz.seb.sebserver.gbl.Constants;
 import ch.ethz.seb.sebserver.gbl.model.EntityKey;
 import ch.ethz.seb.sebserver.gbl.util.Result;
+import ch.ethz.seb.sebserver.gbl.util.Utils;
 import ch.ethz.seb.sebserver.gui.content.action.ActionDefinition;
 import ch.ethz.seb.sebserver.gui.service.i18n.LocTextKey;
 import ch.ethz.seb.sebserver.gui.service.page.PageContext;
@@ -32,11 +33,8 @@ public final class PageAction {
 
     private static final Logger log = LoggerFactory.getLogger(PageAction.class);
 
-    public static final LocTextKey SUCCESS_MSG_TITLE = new LocTextKey("sebserver.page.message");
-
     public final ActionDefinition definition;
     private final Supplier<LocTextKey> confirm;
-    final LocTextKey successMessage;
     private final Supplier<Set<EntityKey>> selectionSupplier;
     private final LocTextKey noSelectionMessage;
     private PageContext pageContext;
@@ -44,6 +42,8 @@ public final class PageAction {
     final boolean fireActionEvent;
     final boolean ignoreMoveAwayFromEdit;
 
+    final LocTextKey successMessage;
+
     public PageAction(
             final ActionDefinition definition,
             final Supplier<LocTextKey> confirm,
@@ -76,6 +76,14 @@ public final class PageAction {
         }
     }
 
+    public String getName() {
+        if (this.definition != null) {
+            return this.definition.name();
+        }
+
+        return Constants.EMPTY_NOTE;
+    }
+
     public EntityKey getEntityKey() {
         return this.pageContext.getEntityKey();
     }
@@ -144,7 +152,9 @@ public final class PageAction {
 
             final PageAction apply = this.exec.apply(this);
             if (this.successMessage != null) {
-                apply.pageContext.publishPageMessage(SUCCESS_MSG_TITLE, this.successMessage);
+                apply.pageContext.publishPageMessage(
+                        PageContext.SUCCESS_MSG_TITLE,
+                        this.successMessage);
             }
             return Result.of(apply);
 
@@ -153,13 +163,23 @@ public final class PageAction {
             return Result.ofError(pme);
         } catch (final RestCallError restCallError) {
             if (!restCallError.isFieldValidationError()) {
-                log.error("Failed to execute action: {}", PageAction.this, restCallError);
+                log.error("Failed to execute action: {} | error: {} | cause: {}",
-                PageAction.this.pageContext.notifyError("action.error.unexpected.message", restCallError);
+                        PageAction.this.getName(),
+                        restCallError.getMessage(),
+                        Utils.getErrorCauseMessage(restCallError));
+                PageAction.this.pageContext.notifyError(
+                        PageContext.UNEXPECTED_ERROR_KEY,
+                        restCallError);
             }
             return Result.ofError(restCallError);
         } catch (final Exception e) {
-            log.error("Failed to execute action: {}", PageAction.this, e);
+            log.error("Failed to execute action: {} | error: {} | cause: {}",
-            PageAction.this.pageContext.notifyError("action.error.unexpected.message", e);
+                    PageAction.this.getName(),
+                    e.getMessage(),
+                    Utils.getErrorCauseMessage(e));
+            PageAction.this.pageContext.notifyError(
+                    PageContext.UNEXPECTED_ERROR_KEY,
+                    e);
             return Result.ofError(e);
         }
     }
@@ -179,6 +199,31 @@ public final class PageAction {
         return this;
     }
 
+    @Override
+    public String toString() {
+        final StringBuilder builder = new StringBuilder();
+        builder.append("PageAction [definition=");
+        builder.append(this.definition);
+        builder.append(", confirm=");
+        builder.append(this.confirm);
+        builder.append(", selectionSupplier=");
+        builder.append(this.selectionSupplier);
+        builder.append(", noSelectionMessage=");
+        builder.append(this.noSelectionMessage);
+        builder.append(", pageContext=");
+        builder.append(this.pageContext);
+        builder.append(", exec=");
+        builder.append(this.exec);
+        builder.append(", fireActionEvent=");
+        builder.append(this.fireActionEvent);
+        builder.append(", ignoreMoveAwayFromEdit=");
+        builder.append(this.ignoreMoveAwayFromEdit);
+        builder.append(", successMessage=");
+        builder.append(this.successMessage);
+        builder.append("]");
+        return builder.toString();
+    }
+
     public static PageAction applySingleSelection(final PageAction action) {
         return action.withEntityKey(action.getSingleSelection());
     }

src/main/java/ch/ethz/seb/sebserver/gui/service/page/impl/PageContextImpl.java

@@ -280,13 +280,17 @@ public class PageContextImpl implements PageContext {
     }
 
     @Override
-    public void notifyError(final String errorMessage, final Exception error) {
+    public void notifyError(final LocTextKey message, final Exception error) {
+        final String errorMessage = message != null
+                ? this.i18nSupport.getText(message)
+                : error.getMessage();
+
         if (error instanceof APIMessageError) {
             final List<APIMessage> errorMessages = ((APIMessageError) error).getErrorMessages();
             final MessageBox messageBox = new Message(
                     getShell(),
                     this.i18nSupport.getText("sebserver.error.unexpected"),
-                    APIMessage.toHTML(errorMessages),
+                    APIMessage.toHTML(errorMessage, errorMessages),
                     SWT.ERROR);
             messageBox.setMarkupEnabled(true);
             messageBox.open(null);
@@ -301,12 +305,6 @@ public class PageContextImpl implements PageContext {
         messageBox.open(null);
     }
 
-    @Override
-    public <T> T notifyError(final Exception error) {
-        notifyError(error.getMessage(), error);
-        return null;
-    }
-
     @Override
     public String toString() {
         return "PageContextImpl [root=" + this.root + ", parent=" + this.parent + ", attributes=" + this.attributes

src/main/java/ch/ethz/seb/sebserver/gui/service/page/impl/PageServiceImpl.java

@@ -55,6 +55,8 @@ public class PageServiceImpl implements PageService {
 
     private static final LocTextKey MSG_GO_AWAY_FROM_EDIT =
             new LocTextKey("sebserver.overall.action.goAwayFromEditPageConfirm");
+    private static final LocTextKey LOGOUT_ERROR_MESSAGE =
+            new LocTextKey("sebserver.error.logout");
 
     private static final String ATTR_PAGE_STATE = "PAGE_STATE";
     private static final ListenerComparator LIST_COMPARATOR = new ListenerComparator();
@@ -234,7 +236,9 @@ public class PageServiceImpl implements PageService {
 
             if (!logoutSuccessful) {
                 log.error("Failed to logout. See logfiles for more information");
-                pageContext.notifyError(new RuntimeException("Failed to logout. See logfiles for more information"));
+                pageContext.notifyError(
+                        LOGOUT_ERROR_MESSAGE,
+                        new RuntimeException("Failed to logout. See logfiles for more information"));
             }
 
         } catch (final Exception e) {

src/main/java/ch/ethz/seb/sebserver/gui/service/remote/webservice/api/RestCall.java

@@ -94,6 +94,14 @@ public abstract class RestCall<T> {
         return this;
     }
 
+    public EntityType getResultType() {
+        if (this.typeKey != null) {
+            return this.typeKey.entityType;
+        }
+
+        return null;
+    }
+
     protected Result<T> exchange(final RestCallBuilder builder) {
 
         log.debug("Call webservice API on {} for {}", this.path, builder);

src/main/java/ch/ethz/seb/sebserver/gui/table/EntityTable.java

@@ -393,7 +393,7 @@ public class EntityTable<ROW extends Entity> {
                 .call()
                 .map(this::createTableRowsFromPage)
                 .map(this.navigator::update)
-                .onError(this.pageContext::notifyError);
+                .onError(this.pageContext::notifyUnexpectedError);
 
         this.composite.getParent().layout(true, true);
         PageService.updateScrolledComposite(this.composite);

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/bulkaction/BulkActionService.java

@@ -10,6 +10,7 @@ package ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction;
 
 import ch.ethz.seb.sebserver.gbl.model.EntityProcessingReport;
 import ch.ethz.seb.sebserver.gbl.util.Result;
+import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.impl.BulkAction;
 
 /** Service to address bulk actions like activation or deletion where the action
  * or state-change of one Entity has an effect on other entities that that has

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/bulkaction/BulkActionSupportDAO.java

@@ -21,12 +21,12 @@ import ch.ethz.seb.sebserver.gbl.api.EntityType;
 import ch.ethz.seb.sebserver.gbl.model.Entity;
 import ch.ethz.seb.sebserver.gbl.model.EntityKey;
 import ch.ethz.seb.sebserver.gbl.util.Result;
+import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.impl.BulkAction;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.ActivatableEntityDAO;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.DAOLoggingSupport;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.EntityDAO;
 
 /** Defines overall DAO support for bulk-actions like activate, deactivate, delete...
- *
  *
  * @param <T> The type of the Entity of a concrete BulkActionSupportDAO */
 public interface BulkActionSupportDAO<T extends Entity> {

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/bulkaction/impl/BulkAction.java

@@ -6,7 +6,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
-package ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction;
+package ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.impl;
 
 import java.util.Arrays;
 import java.util.Collection;

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/bulkaction/impl/BulkActionEvent.java

@@ -6,10 +6,11 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
-package ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction;
+package ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.impl;
 
 import org.springframework.context.ApplicationEvent;
 
+/** Defines a bulk-action event fired after a bulk-action happened */
 public class BulkActionEvent extends ApplicationEvent {
 
     private static final long serialVersionUID = 1102149193640832829L;
@@ -18,6 +19,9 @@ public class BulkActionEvent extends ApplicationEvent {
         super(source);
     }
 
+    /** Get the wrapped BulkAction instance
+     *
+     * @return the wrapped BulkAction instance */
     public BulkAction getBulkAction() {
         return (BulkAction) this.source;
     }

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/bulkaction/impl/BulkActionServiceImpl.java

@@ -6,7 +6,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
-package ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction;
+package ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.impl;
 
 import java.util.Arrays;
 import java.util.Collection;
@@ -28,6 +28,8 @@ import ch.ethz.seb.sebserver.gbl.model.EntityProcessingReport;
 import ch.ethz.seb.sebserver.gbl.model.user.UserLogActivityType;
 import ch.ethz.seb.sebserver.gbl.profile.WebServiceProfile;
 import ch.ethz.seb.sebserver.gbl.util.Result;
+import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.BulkActionService;
+import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.BulkActionSupportDAO;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.UserActivityLogDAO;
 
 @Service

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/.gitignore

@@ -0,0 +1 @@
+/ExamDAO.java

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/AdditionalAttributesDAO.java

@@ -14,22 +14,50 @@ import ch.ethz.seb.sebserver.gbl.api.EntityType;
 import ch.ethz.seb.sebserver.gbl.util.Result;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.model.AdditionalAttributeRecord;
 
+/** Defines functionality to access additional attributes.
+ *
+ * Additional attributes are name/value pairs associated with a specified entity but stored
+ * in a separated data-base table. */
 public interface AdditionalAttributesDAO {
 
+    /** Use this to get all additional attribute records for a specific entity.
+     *
+     * @param type the entity type
+     * @param entityId the entity identifier (primary key)
+     * @return Result refer to the collection of additional attribute records or to an error if happened */
     Result<Collection<AdditionalAttributeRecord>> getAdditionalAttributes(
             EntityType type,
             Long entityId);
 
+    /** Use this to save an additional attribute for a specific entity.
+     * If the additional attribute with specified name already exists for the specified entity
+     * this updates just the value for this additional attribute. Otherwise create a new instance
+     * of additional attribute with the given data
+     *
+     * @param type the entity type
+     * @param entityId the entity identifier (primary key)
+     * @param name the name of the attribute
+     * @param value the value of the attribute */
     void saveAdditionalAttribute(
             EntityType type,
             Long entityId,
             String name,
             String value);
 
+    /** Use this to delete an additional attribute by identifier (primary-key)
+     *
+     * @param id identifier (primary-key) */
     void delete(Long id);
 
+    /** Use this to delete an additional attribute by its entity identifier and name.
+     *
+     * @param entityId the entity identifier (primary-key)
+     * @param name the name of the additional attribute */
     void delete(Long entityId, String name);
 
+    /** Use this to delete all additional attributes for a given entity.
+     *
+     * @param entityId the entity identifier (primary-key) */
     void deleteAll(Long entityId);
 
 }

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/ClientEventDAO.java

@@ -17,6 +17,11 @@ import ch.ethz.seb.sebserver.gbl.util.Result;
 
 public interface ClientEventDAO extends EntityDAO<ClientEvent, ClientEvent> {
 
+    /** Use this to get all matching ExtendedClientEvent from persistent storage.
+     *
+     * @param filterMap the FilterMap containing all the filter criteria
+     * @param predicate an additional predicate to filter the list
+     * @return Result refer to all matching ExtendedClientEvent from persistent storage or to an error if happened. */
     Result<Collection<ExtendedClientEvent>> allMatchingExtended(
             FilterMap filterMap,
             Predicate<ExtendedClientEvent> predicate);

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/ConfigurationAttributeDAO.java

@@ -18,9 +18,14 @@ public interface ConfigurationAttributeDAO extends EntityDAO<ConfigurationAttrib
     /** Use this to get all ConfigurationAttribute that are root attributes and no child
      * attributes (has no parent reference).
      *
-     * @return Collection of all ConfigurationAttribute that are root attributes */
+     * @return Result refer to a Collection of all ConfigurationAttribute that are root attributes or to an error if
+     *         happened */
     Result<Collection<ConfigurationAttribute>> getAllRootAttributes();
 
+    /** Use this to get all ConfigurationAttribute that are children of a specified ConfigurationAttribute.
+     *
+     * @param parentId the identifier of the ConfigurationAttribute to get the children for
+     * @return Result refer to a collection of child ConfigurationAttribute or to an error if happened */
     Result<Collection<ConfigurationAttribute>> allChildAttributes(final Long parentId);
 
 }

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/ConfigurationNodeDAO.java

@@ -17,6 +17,12 @@ public interface ConfigurationNodeDAO extends
         EntityDAO<ConfigurationNode, ConfigurationNode>,
         BulkActionSupportDAO<ConfigurationNode> {
 
+    /** Use this to create a copy from an existing configuration.
+     *
+     * @param institutionId the institution identifier of the existing configuration
+     * @param newOwner the owner of the created copy
+     * @param copyInfo the ConfigCreationInfo containing additional copy information
+     * @return Result refer to the configuration copy root node or to an error if happened */
     Result<ConfigurationNode> createCopy(
             Long institutionId,
             String newOwner,

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/ConfigurationValueDAO.java

@@ -59,6 +59,13 @@ public interface ConfigurationValueDAO extends EntityDAO<ConfigurationValue, Con
      * @return the saved table values of the attribute and configuration */
     Result<ConfigurationTableValues> saveTableValues(ConfigurationTableValues value);
 
+    /** Use this to (re)set the default value(s) for a configuration attributes of a given configuration entry.
+     * This uses also the ExamConfigInitService to initialize table values
+     *
+     * @param institutionId the institution identifier of the configuration
+     * @param configurationId the configuration identifier
+     * @param attributeId the configuration attribute identifier
+     * @return Result refer to a set of all keys of default values or to an error if happened */
     Result<Set<EntityKey>> setDefaultValues(
             Long institutionId,
             Long configurationId,

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/ExamDAO.java

@@ -41,22 +41,68 @@ public interface ExamDAO extends ActivatableEntityDAO<Exam, Exam>, BulkActionSup
      * @return a Result containing the Exam by a given ClientConnection id or refer to an error if happened */
     Result<Exam> byClientConnection(Long connectionId);
 
+    /** Use this to get identifiers of all exams in a specified state for a specified institution.
+     *
+     * @param institutionId the institution identifier. May be null for all institutions
+     * @param status the ExamStatus
+     * @return Result refer to collection of exam identifiers or to an error if happened */
     Result<Collection<Long>> getExamIdsForStatus(Long institutionId, ExamStatus status);
 
+    /** This is used to get all Exams to check if they have to set into running state in the meanwhile.
+     * Gets all exams in the upcoming status for run-check
+     *
+     * @return Result refer to a collection of exams or to an error if happened */
     Result<Collection<Exam>> allForRunCheck();
 
+    /** This is used to get all Exams to check if they have to set into finished state in the meanwhile.
+     * Gets all exams in the running status for end-check
+     *
+     * @return Result refer to a collection of exams or to an error if happened */
     Result<Collection<Exam>> allForEndCheck();
 
-    Result<Exam> placeLock(Long examId, String update);
+    /** This is used to place an internal (write)lock for the specified exam.
+     * The exam will be marked as locked on the persistence level to prevent other running web-service instances
+     * to write concurrently to the specified exam while it is been updated by an internal batch process.
+     *
+     * @param examId the exam identifier
+     * @param updateId an update identifier
+     * @return Result refer to the specified exam or to an error if happened */
+    Result<Exam> placeLock(Long examId, String updateId);
 
-    Result<Exam> releaseLock(Long examId, String update);
+    /** This is used to release an internal (write)lock for the specified exam.
+     * The exam will be marked as not locked on the persistence level.
+     *
+     * @param examId the exam identifier
+     * @param updateId an update identifier
+     * @return Result refer to the specified exam or to an error if happened */
+    Result<Exam> releaseLock(Long examId, String updateId);
 
+    /** This is used to force release an internal (write)lock for the specified exam.
+     * The exam will be marked as not locked on the persistence level even if it is currently locked by another process
+     *
+     * @param examId the exam identifier
+     * @param updateId an update identifier
+     * @return Result refer to the specified exam or to an error if happened */
     Result<Long> forceUnlock(Long examId);
 
+    /** Indicates if the exam with specified identifier has an internal write lock.
+     *
+     * @param examId the exam identifier
+     * @return Result refer to the lock-check-result or to an error if happened */
     Result<Boolean> isLocked(Long examId);
 
-    Result<Boolean> upToDate(Long examId, String lastUpdate);
+    /** Use this to check of the exam with the specified identifier is up to date
+     *
+     * @param examId the exam identifier
+     * @param updateId the update identifier of the exam
+     * @return Result refer to the up-to-date result or to an error if happened */
+    Result<Boolean> upToDate(Long examId, String updateId);
 
-    Result<Exam> setSebRestriction(Long id, boolean sebRestriction);
+    /** This is used to set the seb-restriction flag for a specified exam.
+     *
+     * @param examId the exam identifier
+     * @param sebRestriction the seb-restriction flag value
+     * @return Result refer to the updated Exam or to an error if happened */
+    Result<Exam> setSebRestriction(Long examId, boolean sebRestriction);
 
 }

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/LmsSetupDAO.java

@@ -24,5 +24,9 @@ public interface LmsSetupDAO extends ActivatableEntityDAO<LmsSetup, LmsSetup>, B
      * @return the configured ClientCredentials for a given LmsSetup */
     Result<ClientCredentials> getLmsAPIAccessCredentials(String lmsSetupId);
 
+    /** Use this to get additional proxy data for specified LMS Setup.
+     *
+     * @param lmsSetupId the LMS Setup identifier
+     * @return Result refer to the proxy data or to an error if happened */
     Result<ProxyData> getLmsAPIAccessProxyData(String lmsSetupId);
 }

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/impl/ConfigurationNodeDAOImpl.java

@@ -41,7 +41,7 @@ import ch.ethz.seb.sebserver.webservice.datalayer.batis.mapper.ConfigurationReco
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.mapper.ConfigurationValueRecordDynamicSqlSupport;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.mapper.ConfigurationValueRecordMapper;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.model.ConfigurationNodeRecord;
-import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.BulkAction;
+import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.impl.BulkAction;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.ConfigurationNodeDAO;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.DAOLoggingSupport;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.FilterMap;

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/impl/ConfigurationValueDAOImpl.java

@@ -17,6 +17,7 @@ import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 import java.util.Optional;
 import java.util.Set;
 import java.util.function.Function;
@@ -33,6 +34,7 @@ import org.springframework.transaction.annotation.Transactional;
 
 import ch.ethz.seb.sebserver.gbl.api.EntityType;
 import ch.ethz.seb.sebserver.gbl.model.EntityKey;
+import ch.ethz.seb.sebserver.gbl.model.sebconfig.ConfigurationAttribute;
 import ch.ethz.seb.sebserver.gbl.model.sebconfig.ConfigurationTableValues;
 import ch.ethz.seb.sebserver.gbl.model.sebconfig.ConfigurationTableValues.TableValue;
 import ch.ethz.seb.sebserver.gbl.model.sebconfig.ConfigurationValue;
@@ -51,6 +53,7 @@ import ch.ethz.seb.sebserver.webservice.servicelayer.dao.DAOLoggingSupport;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.FilterMap;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.ResourceNotFoundException;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.TransactionHandler;
+import ch.ethz.seb.sebserver.webservice.servicelayer.sebconfig.ExamConfigInitService;
 
 @Lazy
 @Component
@@ -63,17 +66,20 @@ public class ConfigurationValueDAOImpl implements ConfigurationValueDAO {
     private final ConfigurationAttributeRecordMapper configurationAttributeRecordMapper;
     private final ConfigurationRecordMapper configurationRecordMapper;
     private final ConfigurationDAOBatchService configurationDAOBatchService;
+    private final ExamConfigInitService examConfigInitService;
 
     protected ConfigurationValueDAOImpl(
             final ConfigurationValueRecordMapper configurationValueRecordMapper,
             final ConfigurationAttributeRecordMapper configurationAttributeRecordMapper,
             final ConfigurationRecordMapper configurationRecordMapper,
-            final ConfigurationDAOBatchService configurationDAOBatchService) {
+            final ConfigurationDAOBatchService configurationDAOBatchService,
+            final ExamConfigInitService examConfigInitService) {
 
         this.configurationValueRecordMapper = configurationValueRecordMapper;
         this.configurationAttributeRecordMapper = configurationAttributeRecordMapper;
         this.configurationRecordMapper = configurationRecordMapper;
         this.configurationDAOBatchService = configurationDAOBatchService;
+        this.examConfigInitService = examConfigInitService;
     }
 
     @Override
@@ -388,10 +394,12 @@ public class ConfigurationValueDAOImpl implements ConfigurationValueDAO {
                                 .map(r -> new EntityKey(r.getId(), EntityType.CONFIGURATION_VALUE))
                                 .collect(Collectors.toSet()));
 
-                        // if there are table values, delete them first
+                        // if there are table values, delete them first and init defaults
                         if (tableValues != null && !tableValues.isEmpty()) {
                             this.delete(tableValues)
                                     .getOrThrow();
+
+                            initTableValues(institutionId, configurationId, attributeId);
                         }
                     }
 
@@ -413,7 +421,7 @@ public class ConfigurationValueDAOImpl implements ConfigurationValueDAO {
                         return tableValues;
                     } else {
                         if (values.size() > 1) {
-                            throw new IllegalStateException("Expacted one but get: " + values.size());
+                            throw new IllegalStateException("Expected one but get: " + values.size());
                         }
 
                         final ConfigurationAttributeRecord attribute = this.configurationAttributeRecordMapper
@@ -439,6 +447,41 @@ public class ConfigurationValueDAOImpl implements ConfigurationValueDAO {
                 });
     }
 
+    private void initTableValues(final Long institutionId, final Long configurationId, final Long attributeId) {
+        // get table init values and save
+        final List<Long> childAttributes = this.configurationAttributeRecordMapper.selectIdsByExample()
+                .where(
+                        ConfigurationAttributeRecordDynamicSqlSupport.parentId,
+                        isEqualTo(attributeId))
+                .build()
+                .execute();
+        // get all attributes and map the names to id's
+        final Map<String, ConfigurationAttribute> attributeMap = this.configurationAttributeRecordMapper
+                .selectByExample()
+                .build()
+                .execute()
+                .stream()
+                .map(ConfigurationAttributeDAOImpl::toDomainModel)
+                .map(Result::get)
+                .filter(Objects::nonNull)
+                .collect(Collectors.toMap(
+                        attr -> attr.name,
+                        Function.identity()));
+
+        this.examConfigInitService
+                .getAdditionalDefaultValues(institutionId, configurationId, attributeMap::get)
+                .stream()
+                .filter(attrValue -> childAttributes.contains(attrValue.attributeId))
+                .forEach(attrValue -> this.configurationValueRecordMapper
+                        .insert(new ConfigurationValueRecord(
+                                null,
+                                attrValue.institutionId,
+                                attrValue.configurationId,
+                                attrValue.attributeId,
+                                attrValue.listIndex,
+                                attrValue.value)));
+    }
+
     // get all attributes of the table (columns) mapped to attribute id
     private Result<Map<Long, ConfigurationAttributeRecord>> getAttributeMapping(
             final ConfigurationAttributeRecord attributeRecord) {

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/impl/ExamConfigurationMapDAOImpl.java

@@ -47,7 +47,7 @@ import ch.ethz.seb.sebserver.webservice.datalayer.batis.mapper.ExamRecordMapper;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.model.ConfigurationNodeRecord;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.model.ExamConfigurationMapRecord;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.model.ExamRecord;
-import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.BulkAction;
+import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.impl.BulkAction;
 import ch.ethz.seb.sebserver.webservice.servicelayer.client.ClientCredentialService;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.DAOLoggingSupport;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.ExamConfigurationMapDAO;

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/impl/ExamDAOImpl.java

@@ -44,7 +44,7 @@ import ch.ethz.seb.sebserver.webservice.datalayer.batis.mapper.ClientConnectionR
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.mapper.ExamRecordDynamicSqlSupport;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.mapper.ExamRecordMapper;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.model.ExamRecord;
-import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.BulkAction;
+import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.impl.BulkAction;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.ExamDAO;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.FilterMap;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.ResourceNotFoundException;
@@ -170,6 +170,12 @@ public class ExamDAOImpl implements ExamDAO {
     public Result<Exam> save(final Exam exam) {
         return Result.tryCatch(() -> {
 
+            // check internal persistent write-lock
+            final ExamRecord oldRecord = this.examRecordMapper.selectByPrimaryKey(exam.id);
+            if (BooleanUtils.isTrue(BooleanUtils.toBooleanObject(oldRecord.getUpdating()))) {
+                throw new IllegalStateException("Exam is currently locked: " + String.valueOf(exam));
+            }
+
             final ExamRecord examRecord = new ExamRecord(
                     exam.id,
                     null, null, null, null,
@@ -376,7 +382,7 @@ public class ExamDAOImpl implements ExamDAO {
 
     @Override
     @Transactional(propagation = Propagation.REQUIRES_NEW)
-    public Result<Exam> placeLock(final Long examId, final String update) {
+    public Result<Exam> placeLock(final Long examId, final String updateId) {
         return Result.tryCatch(() -> {
 
             final ExamRecord examRec = this.recordById(examId)
@@ -391,7 +397,7 @@ public class ExamDAOImpl implements ExamDAO {
                     examId,
                     null, null, null, null, null, null, null, null, null, null,
                     BooleanUtils.toInteger(true),
-                    update,
+                    updateId,
                     null);
 
             this.examRecordMapper.updateByPrimaryKeySelective(newRecord);
@@ -404,7 +410,7 @@ public class ExamDAOImpl implements ExamDAO {
 
     @Override
     @Transactional(propagation = Propagation.REQUIRES_NEW)
-    public Result<Exam> releaseLock(final Long examId, final String update) {
+    public Result<Exam> releaseLock(final Long examId, final String updateId) {
         return Result.tryCatch(() -> {
 
             final ExamRecord examRec = this.recordById(examId)
@@ -412,7 +418,7 @@ public class ExamDAOImpl implements ExamDAO {
 
             // consistency check
             if (BooleanUtils.isFalse(BooleanUtils.toBooleanObject(examRec.getUpdating()))
-                    || !update.equals(examRec.getLastupdate())) {
+                    || !updateId.equals(examRec.getLastupdate())) {
 
                 throw new IllegalStateException("Exam to end update is not in expected state: " + examRec);
             }
@@ -421,7 +427,7 @@ public class ExamDAOImpl implements ExamDAO {
                     examId,
                     null, null, null, null, null, null, null, null, null, null,
                     BooleanUtils.toInteger(false),
-                    update,
+                    updateId,
                     null);
 
             this.examRecordMapper.updateByPrimaryKeySelective(newRecord);
@@ -461,13 +467,13 @@ public class ExamDAOImpl implements ExamDAO {
 
     @Override
     @Transactional(readOnly = true)
-    public Result<Boolean> upToDate(final Long examId, final String lastUpdate) {
+    public Result<Boolean> upToDate(final Long examId, final String updateId) {
         return this.recordById(examId)
                 .map(rec -> {
-                    if (lastUpdate == null) {
+                    if (updateId == null) {
                         return rec.getLastupdate() == null;
                     } else {
-                        return lastUpdate.equals(rec.getLastupdate());
+                        return updateId.equals(rec.getLastupdate());
                     }
                 });
     }

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/impl/IndicatorDAOImpl.java

@@ -40,7 +40,7 @@ import ch.ethz.seb.sebserver.webservice.datalayer.batis.mapper.ThresholdRecordDy
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.mapper.ThresholdRecordMapper;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.model.IndicatorRecord;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.model.ThresholdRecord;
-import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.BulkAction;
+import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.impl.BulkAction;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.DAOLoggingSupport;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.FilterMap;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.IndicatorDAO;

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/impl/InstitutionDAOImpl.java

@@ -36,7 +36,7 @@ import ch.ethz.seb.sebserver.gbl.util.Result;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.mapper.InstitutionRecordDynamicSqlSupport;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.mapper.InstitutionRecordMapper;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.model.InstitutionRecord;
-import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.BulkAction;
+import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.impl.BulkAction;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.DAOLoggingSupport;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.FilterMap;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.InstitutionDAO;

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/impl/LmsSetupDAOImpl.java

@@ -37,7 +37,7 @@ import ch.ethz.seb.sebserver.gbl.util.Utils;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.mapper.LmsSetupRecordDynamicSqlSupport;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.mapper.LmsSetupRecordMapper;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.model.LmsSetupRecord;
-import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.BulkAction;
+import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.impl.BulkAction;
 import ch.ethz.seb.sebserver.webservice.servicelayer.client.ClientCredentialService;
 import ch.ethz.seb.sebserver.webservice.servicelayer.client.ClientCredentials;
 import ch.ethz.seb.sebserver.webservice.servicelayer.client.ProxyData;

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/impl/SebClientConfigDAOImpl.java

@@ -40,7 +40,7 @@ import ch.ethz.seb.sebserver.webservice.datalayer.batis.mapper.SebClientConfigRe
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.mapper.SebClientConfigRecordMapper;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.model.AdditionalAttributeRecord;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.model.SebClientConfigRecord;
-import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.BulkAction;
+import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.impl.BulkAction;
 import ch.ethz.seb.sebserver.webservice.servicelayer.client.ClientCredentialService;
 import ch.ethz.seb.sebserver.webservice.servicelayer.client.ClientCredentials;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.DAOLoggingSupport;

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/impl/UserDAOImpl.java

@@ -55,7 +55,7 @@ import ch.ethz.seb.sebserver.webservice.datalayer.batis.mapper.UserRecordMapper;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.model.RoleRecord;
 import ch.ethz.seb.sebserver.webservice.datalayer.batis.model.UserRecord;
 import ch.ethz.seb.sebserver.webservice.servicelayer.authorization.impl.SEBServerUser;
-import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.BulkAction;
+import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.impl.BulkAction;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.DAOLoggingSupport;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.FilterMap;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.TransactionHandler;

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/lms/impl/edx/OpenEdxCourseRestriction.java

@@ -199,20 +199,15 @@ public class OpenEdxCourseRestriction {
         final HttpHeaders httpHeaders = new HttpHeaders();
         httpHeaders.add(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE);
         return () -> {
-            try {
+            final OpenEdxCourseRestrictionData body = this.restTemplate.exchange(
-                final OpenEdxCourseRestrictionData body = this.restTemplate.exchange(
+                    url,
-                        url,
+                    HttpMethod.PUT,
-                        HttpMethod.PUT,
+                    new HttpEntity<>(toJson(restriction), httpHeaders),
-                        new HttpEntity<>(toJson(restriction), httpHeaders),
+                    OpenEdxCourseRestrictionData.class)
-                        OpenEdxCourseRestrictionData.class)
+                    .getBody();
-                        .getBody();
 
-                if (log.isDebugEnabled()) {
+            if (log.isDebugEnabled()) {
-                    log.debug("Successfully PUT SEB Client restriction on course: {} : {}", courseId, body);
+                log.debug("Successfully PUT SEB Client restriction on course: {} : {}", courseId, body);
-                }
-            } catch (final Exception e) {
-                log.error("Unexpected error while trying to call API for PUT. Course: ", courseId, e);
-                return false;
             }
 
             return true;
@@ -223,23 +218,18 @@ public class OpenEdxCourseRestriction {
 
         final String url = this.lmsSetup.lmsApiUrl + getSebRestrictionUrl(courseId);
         return () -> {
-            try {
+            final ResponseEntity<Object> exchange = this.restTemplate.exchange(
-                final ResponseEntity<Object> exchange = this.restTemplate.exchange(
+                    url,
-                        url,
+                    HttpMethod.DELETE,
-                        HttpMethod.DELETE,
+                    new HttpEntity<>(new HttpHeaders()),
-                        new HttpEntity<>(new HttpHeaders()),
+                    Object.class);
-                        Object.class);
 
-                if (exchange.getStatusCode() == HttpStatus.NO_CONTENT) {
+            if (exchange.getStatusCode() == HttpStatus.NO_CONTENT) {
-                    if (log.isDebugEnabled()) {
+                if (log.isDebugEnabled()) {
-                        log.debug("Successfully PUT SEB Client restriction on course: {}", courseId);
+                    log.debug("Successfully PUT SEB Client restriction on course: {}", courseId);
-                    }
-                } else {
-                    log.error("Unexpected response for deletion: {}", exchange);
-                    return false;
                 }
-            } catch (final Exception e) {
+            } else {
-                log.error("Unexpected error while trying to call API for DELETE. Course: ", courseId, e);
+                log.error("Unexpected response for deletion: {}", exchange);
                 return false;
             }
 

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/sebconfig/ClientConfigService.java

@@ -19,7 +19,7 @@ import org.springframework.security.oauth2.provider.ClientDetails;
 
 import ch.ethz.seb.sebserver.gbl.model.sebconfig.SebClientConfig;
 import ch.ethz.seb.sebserver.gbl.util.Result;
-import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.BulkActionEvent;
+import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.impl.BulkActionEvent;
 
 public interface ClientConfigService {
 

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/sebconfig/impl/ClientConfigServiceImpl.java

@@ -42,8 +42,8 @@ import ch.ethz.seb.sebserver.gbl.profile.WebServiceProfile;
 import ch.ethz.seb.sebserver.gbl.util.Result;
 import ch.ethz.seb.sebserver.gbl.util.Utils;
 import ch.ethz.seb.sebserver.webservice.WebserviceInfo;
-import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.BulkAction;
+import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.impl.BulkAction;
-import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.BulkActionEvent;
+import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.impl.BulkActionEvent;
 import ch.ethz.seb.sebserver.webservice.servicelayer.client.ClientCredentialService;
 import ch.ethz.seb.sebserver.webservice.servicelayer.client.ClientCredentials;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.InstitutionDAO;

src/main/java/ch/ethz/seb/sebserver/webservice/weblayer/api/ActivatableEntityController.java

@@ -26,8 +26,8 @@ import ch.ethz.seb.sebserver.gbl.util.Result;
 import ch.ethz.seb.sebserver.webservice.servicelayer.PaginationService;
 import ch.ethz.seb.sebserver.webservice.servicelayer.authorization.AuthorizationService;
 import ch.ethz.seb.sebserver.webservice.servicelayer.authorization.UserService;
-import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.BulkAction;
 import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.BulkActionService;
+import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.impl.BulkAction;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.ActivatableEntityDAO;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.FilterMap;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.UserActivityLogDAO;

src/main/java/ch/ethz/seb/sebserver/webservice/weblayer/api/EntityController.java

@@ -44,8 +44,8 @@ import ch.ethz.seb.sebserver.gbl.util.Result;
 import ch.ethz.seb.sebserver.webservice.servicelayer.PaginationService;
 import ch.ethz.seb.sebserver.webservice.servicelayer.authorization.AuthorizationService;
 import ch.ethz.seb.sebserver.webservice.servicelayer.authorization.UserService;
-import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.BulkAction;
 import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.BulkActionService;
+import ch.ethz.seb.sebserver.webservice.servicelayer.bulkaction.impl.BulkAction;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.EntityDAO;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.FilterMap;
 import ch.ethz.seb.sebserver.webservice.servicelayer.dao.UserActivityLogDAO;

src/main/resources/messages.properties

@@ -81,6 +81,14 @@ sebserver.dialog.confirm.title=Confirmation
 sebserver.dialog.confirm.deactivation=Note that there are {0} other entities that belongs to this entity.<br/>Those will also be deactivated by deactivating this entity.<br/><br/>Are You sure to deactivate this entity?
 sebserver.dialog.confirm.deactivation.noDependencies=Are You sure you want to deactivate?
 
+sebserver.error.action.unexpected.message=<br/><br/>Failed to process action. There was an unexpected error.<br/> Please try again or contact a system-administrator if this error persists
+sebserver.error.get.entity=<br/><br/>Failed to load {0}.<br/> Please try again or contact a system-administrator if this error persists
+sebserver.error.remove.entity=<br/><br/>Failed to remove {0}.<br/> Please try again or contact a system-administrator if this error persists
+sebserver.error.activate.entity=<br/><br/>Failed to activate/deactivate {0}.<br/> Please try again or contact a system-administrator if this error persists
+sebserver.error.save.entity=<br/><br/>Failed to save {0}.<br/> Please try again or contact a system-administrator if this error persists
+sebserver.error.exam.seb.restriction=<br/><br/>Failed to automatically set Safe Exam Browser restriction on/off for this exam on the corresponding LMS.<br/> Please check the LMS Setup and try again or contact a system-administrator if this error persists
+sebserver.error.import=<br/><br/>Failed to import {0}.<br/> Please try again or contact a system-administrator if this error persists
+sebserver.error.logout=<br/><br/>Failed to logout properly.<br/> Please try again or contact a system-administrator if this error persists
 ################################
 # Login Page
 ################################