Added methods with limit and offset parameter to page models repo

Former-commit-id: 1c34927e92

ccm-core/src/main/java/org/libreccm/pagemodel/PageModelRepository.java

@@ -58,7 +58,7 @@ public class PageModelRepository extends AbstractEntityRepository<Long, PageMode
     public Long getIdOfEntity(final PageModel entity) {
         return entity.getPageModelId();
     }
-    
+
     @Override
     public boolean isNew(final PageModel pageModel) {
 
@@ -91,7 +91,6 @@ public class PageModelRepository extends AbstractEntityRepository<Long, PageMode
     @Transactional(Transactional.TxType.REQUIRED)
     @Override
     public void save(final PageModel pageModel) {
-
         pageModel.setLastModified(new Date());
 
         super.save(pageModel);
@@ -106,11 +105,30 @@ public class PageModelRepository extends AbstractEntityRepository<Long, PageMode
     @RequiresPrivilege(CoreConstants.PRIVILEGE_ADMIN)
     @Transactional(Transactional.TxType.REQUIRED)
     public List<PageModel> findAllDraftModels() {
+        return getEntityManager()
+            .createNamedQuery("PageModel.findAllDraftModels", PageModel.class)
+            .getResultList();
+    }
 
-        final TypedQuery<PageModel> query = getEntityManager()
-            .createNamedQuery("PageModel.findAllDraftModels", PageModel.class);
-
-        return query.getResultList();
+    /**
+     * Find all draft versions of {@link PageModel}s.
+     *
+     * @param limit
+     * @param offset
+     *
+     * @return A list with all draft versions of {@link PageModel}s.
+     */
+    @AuthorizationRequired
+    @RequiresPrivilege(CoreConstants.PRIVILEGE_ADMIN)
+    @Transactional(Transactional.TxType.REQUIRED)
+    public List<PageModel> findAllDraftModels(
+        final int limit, final int offset
+    ) {
+        return getEntityManager()
+            .createNamedQuery("PageModel.findAllDraftModels", PageModel.class)
+            .setMaxResults(limit)
+            .setFirstResult(offset)
+            .getResultList();
     }
 
     /**
@@ -120,11 +138,27 @@ public class PageModelRepository extends AbstractEntityRepository<Long, PageMode
      */
     @Transactional(Transactional.TxType.REQUIRED)
     public List<PageModel> findAllLiveModels() {
+        return getEntityManager()
+            .createNamedQuery("PageModel.findAllLiveModels", PageModel.class)
+            .getResultList();
+    }
 
-        final TypedQuery<PageModel> query = getEntityManager()
-            .createNamedQuery("PageModel.findAllLiveModels", PageModel.class);
-
-        return query.getResultList();
+    /**
+     * Find all live versions of {@link PageModel}s.
+     *
+     * @param limit
+     * @param offset
+     * @return A list with all draft versions of {@link PageModel}s.
+     */
+    @Transactional(Transactional.TxType.REQUIRED)
+    public List<PageModel> findAllLiveModels(
+        final int limit, final int offset
+    ) {
+        return getEntityManager()
+            .createNamedQuery("PageModel.findAllLiveModels", PageModel.class)
+            .setMaxResults(limit)
+            .setFirstResult(offset)
+            .getResultList();
     }
 
     /**
@@ -141,17 +175,50 @@ public class PageModelRepository extends AbstractEntityRepository<Long, PageMode
     @AuthorizationRequired
     @RequiresPrivilege(CoreConstants.PRIVILEGE_ADMIN)
     public List<PageModel> findDraftByApplication(
-        final CcmApplication application) {
+        final CcmApplication application
+    ) {
 
         Objects.requireNonNull(application,
                                "Can't find page models for application null");
 
-        final TypedQuery<PageModel> query = getEntityManager()
+        return getEntityManager()
             .createNamedQuery("PageModel.findDraftByApplication",
-                              PageModel.class);
-        query.setParameter("application", application);
+                              PageModel.class)
+            .setParameter("application", application)
+            .getResultList();
+    }
+    
+      /**
+     * Finds the draft versions of all {@link PageModel}s for the provided
+     * application.
+     *
+     * @param application The application for which the {@link PageModel}s are
+     *                    retrieved.
+     * @param limit
+     * @param offset
+     *
+     * @return A list of the {@link PageModel}s defined for the provided
+     *         {@code application}.
+     */
+    @Transactional(Transactional.TxType.REQUIRED)
+    @AuthorizationRequired
+    @RequiresPrivilege(CoreConstants.PRIVILEGE_ADMIN)
+    public List<PageModel> findDraftByApplication(
+        final CcmApplication application,
+        final int limit,
+        final int offset
+    ) {
 
-        return query.getResultList();
+        Objects.requireNonNull(application,
+                               "Can't find page models for application null");
+
+        return getEntityManager()
+            .createNamedQuery("PageModel.findDraftByApplication",
+                              PageModel.class)
+            .setParameter("application", application)
+            .setMaxResults(limit)
+            .setFirstResult(offset)
+            .getResultList();
     }
 
     /**