/*
* 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.persistence;
import org.apache.jackrabbit.core.id.NodeId;
import org.apache.jackrabbit.core.id.PropertyId;
import org.apache.jackrabbit.core.state.ChangeLog;
import org.apache.jackrabbit.core.state.ItemState;
import org.apache.jackrabbit.core.state.ItemStateException;
import org.apache.jackrabbit.core.state.NodeReferences;
import org.apache.jackrabbit.core.state.NodeState;
import org.apache.jackrabbit.core.state.PropertyState;
import java.util.Iterator;
/**
* Implementation <code>PersistenceManager</code> that handles some
* concepts.
*/
public abstract class AbstractPersistenceManager implements PersistenceManager {
/**
* {@inheritDoc}
*/
public NodeState createNew(NodeId id) {
return new NodeState(id, null, null, NodeState.STATUS_NEW, false);
}
/**
* {@inheritDoc}
*/
public PropertyState createNew(PropertyId id) {
return new PropertyState(id, PropertyState.STATUS_NEW, false);
}
/**
* Right now, this iterates over all items in the changelog and
* calls the individual methods that handle single item states
* or node references objects. Properly implemented, this method
* should ensure that changes are either written completely to
* the underlying persistence layer, or not at all.
*
* {@inheritDoc}
*/
public synchronized void store(ChangeLog changeLog) throws ItemStateException {
Iterator<ItemState> iter = changeLog.deletedStates();
while (iter.hasNext()) {
ItemState state = iter.next();
if (state.isNode()) {
destroy((NodeState) state);
} else {
destroy((PropertyState) state);
}
}
iter = changeLog.addedStates();
while (iter.hasNext()) {
ItemState state = (ItemState) iter.next();
if (state.isNode()) {
store((NodeState) state);
} else {
store((PropertyState) state);
}
}
iter = changeLog.modifiedStates();
while (iter.hasNext()) {
ItemState state = (ItemState) iter.next();
if (state.isNode()) {
store((NodeState) state);
} else {
store((PropertyState) state);
}
}
Iterator<NodeReferences> refIter = changeLog.modifiedRefs();
while (iter.hasNext()) {
NodeReferences refs = refIter.next();
if (refs.hasReferences()) {
store(refs);
} else {
if (exists(refs.getId())) {
destroy(refs);
}
}
}
}
/**
* This implementation does nothing.
*
* {@inheritDoc}
*/
public void checkConsistency(String[] uuids, boolean recursive, boolean fix) {
}
/**
* Store a node state. Subclass responsibility.
*
* @param state node state to store
* @throws ItemStateException if an error occurs
*/
protected abstract void store(NodeState state) throws ItemStateException;
/**
* Store a property state. Subclass responsibility.
*
* @param state property state to store
* @throws ItemStateException if an error occurs
*/
protected abstract void store(PropertyState state) throws ItemStateException;
/**
* Store a references object. Subclass responsibility.
*
* @param refs references object to store
* @throws ItemStateException if an error occurs
*/
protected abstract void store(NodeReferences refs) throws ItemStateException;
/**
* Destroy a node state. Subclass responsibility.
*
* @param state node state to destroy
* @throws ItemStateException if an error occurs
*/
protected abstract void destroy(NodeState state) throws ItemStateException;
/**
* Destroy a property state. Subclass responsibility.
*
* @param state property state to destroy
* @throws ItemStateException if an error occurs
*/
protected abstract void destroy(PropertyState state) throws ItemStateException;
/**
* Destroy a node references object. Subclass responsibility.
*
* @param refs node references object to destroy
* @throws ItemStateException if an error occurs
*/
protected abstract void destroy(NodeReferences refs)
throws ItemStateException;
}