SEBSERV-298

src/main/java/ch/ethz/seb/sebserver/gbl/model/exam/Exam.java

@@ -61,6 +61,7 @@ public final class Exam implements GrantEntity {
     public static final String FILTER_ATTR_TYPE = "type";
     public static final String FILTER_ATTR_STATUS = "status";
     public static final String FILTER_CACHED_QUIZZES = "cached-quizzes";
+    public static final String FILTER_ATTR_HIDE_MISSING = "show-missing";
 
     public static final String ATTR_ADDITIONAL_ATTRIBUTES = "additionalAttributes";
 

src/main/java/ch/ethz/seb/sebserver/gui/content/action/ActionDefinition.java

@@ -297,6 +297,17 @@ public enum ActionDefinition {
             PageStateDefinitionImpl.EXAM_VIEW,
             ActionCategory.FORM),
 
+    EXAM_LIST_HIDE_MISSING(
+            new LocTextKey("sebserver.exam.action.list.hide.missing"),
+            ImageIcon.TOGGLE_OFF,
+            PageStateDefinitionImpl.EXAM_LIST,
+            ActionCategory.EXAM_LIST),
+    EXAM_LIST_SHOW_MISSING(
+            new LocTextKey("sebserver.exam.action.list.show.missing"),
+            ImageIcon.TOGGLE_ON,
+            PageStateDefinitionImpl.EXAM_LIST,
+            ActionCategory.EXAM_LIST),
+
     EXAM_MODIFY_SEB_RESTRICTION_DETAILS(
             new LocTextKey("sebserver.exam.action.sebrestriction.details"),
             ImageIcon.RESTRICTION,
@@ -956,6 +967,7 @@ public enum ActionDefinition {
             ImageIcon.TOGGLE_ON,
             PageStateDefinitionImpl.MONITORING_RUNNING_EXAM,
             ActionCategory.STATE_FILTER),
+
     MONITOR_EXAM_HIDE_CLOSED_CONNECTION(
             new LocTextKey("sebserver.monitoring.exam.connection.action.hide.closed"),
             ImageIcon.TOGGLE_OFF,

src/main/java/ch/ethz/seb/sebserver/gui/content/exam/ExamList.java

@@ -243,6 +243,29 @@ public class ExamList implements TemplateComposer {
                         EMPTY_SELECTION_TEXT_KEY)
                 .publishIf(() -> userGrant.im(), false);
 
+        actionBuilder
+                .newAction(ActionDefinition.EXAM_LIST_HIDE_MISSING)
+                .withExec(action -> hideMissingExams(action, table))
+                .noEventPropagation()
+                .withSwitchAction(
+                        actionBuilder.newAction(ActionDefinition.EXAM_LIST_SHOW_MISSING)
+                                .withExec(action -> showMissingExams(action, table))
+                                .noEventPropagation()
+                                .create())
+                .publish();
+
+    }
+
+    private PageAction showMissingExams(final PageAction action, final EntityTable<Exam> table) {
+        table.setStaticFilter(Exam.FILTER_ATTR_HIDE_MISSING, Constants.FALSE_STRING);
+        table.applyFilter();
+        return action;
+    }
+
+    private PageAction hideMissingExams(final PageAction action, final EntityTable<Exam> table) {
+        table.setStaticFilter(Exam.FILTER_ATTR_HIDE_MISSING, Constants.TRUE_STRING);
+        table.applyFilter();
+        return action;
     }
 
     static PageAction modifyExam(final PageAction action, final EntityTable<Exam> table) {

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

@@ -254,6 +254,10 @@ public class EntityTable<ROW extends ModelIdAware> {
         return this.sortOrder;
     }
 
+    public void setStaticFilter(final String name, final String value) {
+        this.staticQueryParams.set(name, value);
+    }
+
     public EntityType getEntityType() {
         if (this.pageSupplier != null) {
             return this.pageSupplier.getEntityType();

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

@@ -183,6 +183,13 @@ public class ExamRecordDAO {
                             ExamRecordDynamicSqlSupport.type,
                             isEqualToWhenPresent(filterMap.getExamType()));
 
+            // SEBSERV-298
+            if (filterMap.getBoolean(Exam.FILTER_ATTR_HIDE_MISSING)) {
+                whereClause = whereClause.and(
+                        ExamRecordDynamicSqlSupport.lmsAvailable,
+                        SqlBuilder.isGreaterThan(0));
+            }
+
             final String examStatus = filterMap.getExamStatus();
             if (StringUtils.isNotBlank(examStatus)) {
                 whereClause = whereClause

src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/session/impl/ExamSessionServiceImpl.java

@@ -265,7 +265,8 @@ public class ExamSessionServiceImpl implements ExamSessionService {
 
         filterMap
                 .putIfAbsent(Exam.FILTER_ATTR_ACTIVE, Constants.TRUE_STRING)
-                .putIfAbsent(Exam.FILTER_ATTR_STATUS, ExamStatus.RUNNING.name());
+                .putIfAbsent(Exam.FILTER_ATTR_STATUS, ExamStatus.RUNNING.name())
+                .putIfAbsent(Exam.FILTER_ATTR_HIDE_MISSING, Constants.TRUE_STRING);
 
         return this.examDAO.allMatching(filterMap, predicate)
                 .map(col -> col.stream()

src/main/resources/messages.properties

@@ -528,6 +528,8 @@ sebserver.exam.autogen.error.config.text=There was an unexpected error while set
 sebserver.exam.action.list=Exam
 sebserver.exam.action.list.view=View Exam
 sebserver.exam.action.list.modify=Edit Exam
+sebserver.exam.action.list.hide.missing=Hide Missing Exams
+sebserver.exam.action.list.show.missing=Show Missing Exams
 sebserver.exam.action.modify=Edit Exam
 sebserver.exam.action.import=Import From Quizzes
 sebserver.exam.action.save=Save Exam