From 2bd05a87e7b51dce975e72f2d41b5f1eeda5ad11 Mon Sep 17 00:00:00 2001
From: Daniel Gerhardt <code@dgerhardt.net>
Date: Tue, 13 Mar 2018 15:26:16 +0100
Subject: [PATCH] Add "prepare" methods for DefaultEntityServiceImpl
These methods allow to perform actions based on the entity before the
CRUD operation is executed.
---
.../services/DefaultEntityServiceImpl.java | 41 +++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/src/main/java/de/thm/arsnova/services/DefaultEntityServiceImpl.java b/src/main/java/de/thm/arsnova/services/DefaultEntityServiceImpl.java
index 0027ffa0a..45ef03c2b 100644
--- a/src/main/java/de/thm/arsnova/services/DefaultEntityServiceImpl.java
+++ b/src/main/java/de/thm/arsnova/services/DefaultEntityServiceImpl.java
@@ -69,19 +69,39 @@ public class DefaultEntityServiceImpl<T extends Entity> implements EntityService
throw new IllegalArgumentException("Entity is not new.");
}
entity.setCreationTimestamp(new Date());
+ prepareCreate(entity);
return repository.save(entity);
}
+ /**
+ * This method can be overridden by subclasses to modify the entity before creation.
+ *
+ * @param entity The entity to be created
+ */
+ protected void prepareCreate(final T entity) {
+
+ }
+
@Override
@PreAuthorize("hasPermission(#oldEntity, 'update')")
public T update(final T oldEntity, final T newEntity) {
newEntity.setId(oldEntity.getId());
newEntity.setUpdateTimestamp(new Date());
+ prepareUpdate(newEntity);
return repository.save(newEntity);
}
+ /**
+ * This method can be overridden by subclasses to modify the entity before updating.
+ *
+ * @param entity The entity to be updated
+ */
+ protected void prepareUpdate(final T entity) {
+
+ }
+
@Override
public T patch(final T entity, final Map<String, Object> changes) throws IOException {
return patch(entity, changes, Function.identity());
@@ -96,6 +116,7 @@ public class DefaultEntityServiceImpl<T extends Entity> implements EntityService
JsonNode tree = objectMapper.valueToTree(changes);
reader.readValue(tree);
entity.setUpdateTimestamp(new Date());
+ preparePatch(entity);
return repository.save(entity);
}
@@ -115,17 +136,37 @@ public class DefaultEntityServiceImpl<T extends Entity> implements EntityService
ObjectReader reader = objectMapper.readerForUpdating(obj).withView(View.Public.class);
reader.readValue(tree);
entity.setUpdateTimestamp(new Date());
+ preparePatch(entity);
}
return repository.save(entities);
}
+ /**
+ * This method can be overridden by subclasses to modify the entity before patching. By default, the implementation
+ * of {@link #prepareUpdate} is used.
+ *
+ * @param entity The entity to be patched
+ */
+ protected void preparePatch(final T entity) {
+ prepareUpdate(entity);
+ }
+
@Override
@PreAuthorize("hasPermission(#entity, 'delete')")
public void delete(final T entity) {
repository.delete(entity);
}
+ /**
+ * This method can be overridden by subclasses to do additional entity related actions before deletion.
+ *
+ * @param entity The entity to be deleted
+ */
+ protected void prepareDelete(final T entity) {
+
+ }
+
public String getTypeName() {
return type.getSimpleName().toLowerCase();
}
--
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