/*
* 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.jackrabbit.core.cluster;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.jcr.Session;
import javax.jcr.observation.Event;
import org.apache.jackrabbit.core.id.NodeId;
import org.apache.jackrabbit.core.id.PropertyId;
import org.apache.jackrabbit.core.RepositoryImpl;
import org.apache.jackrabbit.core.cluster.SimpleEventListener.UpdateEvent;
import org.apache.jackrabbit.core.observation.EventState;
import org.apache.jackrabbit.core.state.ChangeLog;
import org.apache.jackrabbit.core.state.NodeState;
import org.apache.jackrabbit.core.state.PropertyState;
import org.apache.jackrabbit.spi.Name;
import org.apache.jackrabbit.spi.NameFactory;
import org.apache.jackrabbit.spi.Path;
import org.apache.jackrabbit.spi.PathFactory;
import org.apache.jackrabbit.spi.commons.name.NameFactoryImpl;
import org.apache.jackrabbit.spi.commons.name.PathFactoryImpl;
/**
* Simplistic factory that produces update events, consisting of node identifiers,
* property identifiers and event states.
*/
public class UpdateEventFactory {
/**
* Root node id.
*/
private static final NodeId ROOT_NODE_ID = RepositoryImpl.ROOT_NODE_ID;
/**
* Default user.
*/
private static final String DEFAULT_USER = "admin";
/**
* Instance of this class.
*/
private static final UpdateEventFactory INSTANCE = new UpdateEventFactory();
/**
* Default session, used for event state creation.
*/
private final Session session = new ClusterSession(DEFAULT_USER);
/**
* Name factory.
*/
private NameFactory nameFactory = NameFactoryImpl.getInstance();
/**
* Path factory.
*/
private PathFactory pathFactory = PathFactoryImpl.getInstance();
/**
* Create a new instance of this class. Private as there is only one
* instance acting as singleton.
*/
private UpdateEventFactory() {
}
/**
* Return the instance of this class.
*
* @return factory
*/
public static UpdateEventFactory getInstance() {
return INSTANCE;
}
/**
* Create an update operation.
*
* @return update operation
*/
public UpdateEvent createUpdateOperation() {
NodeState n1 = createNodeState();
NodeState n2 = createNodeState();
NodeState n3 = createNodeState();
PropertyState p1 = createPropertyState(n1.getNodeId(), "{}a");
PropertyState p2 = createPropertyState(n2.getNodeId(), "{}b");
ChangeLog changes = new ChangeLog();
changes.added(n1);
changes.added(p1);
changes.deleted(p2);
changes.modified(n2);
changes.deleted(n3);
List events = new ArrayList();
events.add(createEventState(n1, Event.NODE_ADDED, "{}n1", session));
events.add(createEventState(p1, n1, Event.PROPERTY_ADDED, session));
events.add(createEventState(p2, n2, Event.PROPERTY_REMOVED, session));
events.add(createEventState(n3, Event.NODE_REMOVED, "{}n3", session));
return new UpdateEvent(changes, events, System.currentTimeMillis(), "user-data");
}
/**
* Create an update operation.
*
* @return update operation
*/
public UpdateEvent createUpdateOperationWithNullUserId() {
NodeState n1 = createNodeState();
NodeState n2 = createNodeState();
NodeState n3 = createNodeState();
PropertyState p1 = createPropertyState(n1.getNodeId(), "{}a");
PropertyState p2 = createPropertyState(n2.getNodeId(), "{}b");
ChangeLog changes = new ChangeLog();
changes.added(n1);
changes.added(p1);
changes.deleted(p2);
changes.modified(n2);
changes.deleted(n3);
Session s = new ClusterSession(null);
List events = new ArrayList();
events.add(createEventState(n1, Event.NODE_ADDED, "{}n1", s));
events.add(createEventState(p1, n1, Event.PROPERTY_ADDED, s));
events.add(createEventState(p2, n2, Event.PROPERTY_REMOVED, s));
events.add(createEventState(n3, Event.NODE_REMOVED, "{}n3", s));
return new UpdateEvent(changes, events, System.currentTimeMillis(), "user-data");
}
/**
* Create a node state.
*
* @return node state
*/
protected NodeState createNodeState() {
Name ntName = nameFactory.create("{}testnt");
NodeState n = new NodeState(
NodeId.randomId(), ntName,
ROOT_NODE_ID, NodeState.STATUS_EXISTING, false);
n.setMixinTypeNames(Collections.EMPTY_SET);
return n;
}
/**
* Create a property state.
*
* @param parentId parent node id
* @param name property name
* @return property state.
*/
protected PropertyState createPropertyState(NodeId parentId, String name) {
Name propName = nameFactory.create(name);
return new PropertyState(
new PropertyId(parentId, propName),
NodeState.STATUS_EXISTING, false);
}
/**
* Create an event state for an operation on a node.
*
* @param n node state
* @param type <code>Event.NODE_ADDED</code> or <code>Event.NODE_REMOVED</code>
* @param name node name
* @param session the session that produced the event.
* @return event state
*/
protected EventState createEventState(NodeState n, int type, String name,
Session session) {
Path relPath = pathFactory.create(nameFactory.create(name));
switch (type) {
case Event.NODE_ADDED:
return EventState.childNodeAdded(
n.getParentId(), pathFactory.getRootPath(),
n.getNodeId(), relPath, n.getNodeTypeName(),
n.getMixinTypeNames(), session);
case Event.NODE_REMOVED:
return EventState.childNodeRemoved(
n.getParentId(), pathFactory.getRootPath(),
n.getNodeId(), relPath, n.getNodeTypeName(),
n.getMixinTypeNames(), session);
}
return null;
}
/**
* Create an event state for a property operation.
*
* @param p property state
* @param parent parent node state
* @param type <code>Event.NODE_ADDED</code> or <code>Event.NODE_REMOVED</code>
* @param session the session that produces the event.
* @return event state
*/
protected EventState createEventState(PropertyState p, NodeState parent, int type,
Session session) {
Path relPath = pathFactory.create(p.getName());
switch (type) {
case Event.PROPERTY_ADDED:
return EventState.propertyAdded(
p.getParentId(), pathFactory.getRootPath(), relPath,
parent.getNodeTypeName(), parent.getMixinTypeNames(),
session);
case Event.PROPERTY_CHANGED:
return EventState.propertyChanged(
p.getParentId(), pathFactory.getRootPath(), relPath,
parent.getNodeTypeName(), parent.getMixinTypeNames(),
session);
case Event.PROPERTY_REMOVED:
return EventState.propertyRemoved(
p.getParentId(), pathFactory.getRootPath(), relPath,
parent.getNodeTypeName(), parent.getMixinTypeNames(),
session);
}
return null;
}
}