/*****************************************************************
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
****************************************************************/
package org.apache.cayenne.lifecycle.postcommit;
import org.apache.cayenne.ObjectId;
import org.apache.cayenne.graph.GraphChangeHandler;
import org.apache.cayenne.lifecycle.postcommit.meta.PostCommitEntity;
import org.apache.cayenne.lifecycle.postcommit.meta.PostCommitEntityFactory;
/**
* Filters changes passing only auditable object changes to the underlying
* delegate.
*/
class DiffFilter implements GraphChangeHandler {
private PostCommitEntityFactory entityFactory;
private GraphChangeHandler delegate;
DiffFilter(PostCommitEntityFactory entityFactory, GraphChangeHandler delegate) {
this.entityFactory = entityFactory;
this.delegate = delegate;
}
@Override
public void nodeIdChanged(Object nodeId, Object newId) {
if (entityFactory.getEntity((ObjectId) nodeId).isIncluded()) {
delegate.nodeIdChanged(nodeId, newId);
}
}
@Override
public void nodeCreated(Object nodeId) {
if (entityFactory.getEntity((ObjectId) nodeId).isIncluded()) {
delegate.nodeCreated(nodeId);
}
}
@Override
public void nodeRemoved(Object nodeId) {
if (entityFactory.getEntity((ObjectId) nodeId).isIncluded()) {
delegate.nodeRemoved(nodeId);
}
}
@Override
public void nodePropertyChanged(Object nodeId, String property, Object oldValue, Object newValue) {
PostCommitEntity entity = entityFactory.getEntity((ObjectId) nodeId);
if (entity.isIncluded(property)) {
if (entity.isConfidential(property)) {
oldValue = Confidential.getInstance();
newValue = Confidential.getInstance();
}
delegate.nodePropertyChanged(nodeId, property, oldValue, newValue);
}
}
@Override
public void arcCreated(Object nodeId, Object targetNodeId, Object arcId) {
if (entityFactory.getEntity((ObjectId) nodeId).isIncluded(arcId.toString())) {
delegate.arcCreated(nodeId, targetNodeId, arcId);
}
}
@Override
public void arcDeleted(Object nodeId, Object targetNodeId, Object arcId) {
if (entityFactory.getEntity((ObjectId) nodeId).isIncluded(arcId.toString())) {
delegate.arcDeleted(nodeId, targetNodeId, arcId);
}
}
}