/**
* This file is part of the JCROM project.
* Copyright (C) 2008-2014 - All rights reserved.
* Authors: Olafur Gauti Gudmundsson, Nicolas Dos Santos
*
* Licensed 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.jcrom;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.jcr.Node;
import javax.jcr.Session;
import org.jcrom.util.NodeFilter;
import org.jcrom.util.PathUtils;
/**
* Handles lazy loading of single child node.
*
* @author Olafur Gauti Gudmundsson
* @author Nicolas Dos Santos
*/
class ChildNodeLoader extends AbstractLazyLoader {
private static final Logger logger = Logger.getLogger(ChildNodeLoader.class.getName());
private final Class<?> objectClass;
private final Object parentObject;
private final String containerPath;
private final int depth;
private final NodeFilter nodeFilter;
private final boolean pathIsContainer;
ChildNodeLoader(Class<?> objectClass, Object parentObject, String containerPath, Session session, Mapper mapper, int depth, NodeFilter nodeFilter) {
this(objectClass, parentObject, containerPath, session, mapper, depth, nodeFilter, true);
}
ChildNodeLoader(Class<?> objectClass, Object parentObject, String containerPath, Session session, Mapper mapper, int depth, NodeFilter nodeFilter, boolean pathIsContainer) {
super(session, mapper);
this.objectClass = objectClass;
this.parentObject = parentObject;
this.containerPath = containerPath;
this.depth = depth;
this.nodeFilter = nodeFilter;
this.pathIsContainer = pathIsContainer;
}
@Override
protected Object doLoadObject(Session session, Mapper mapper) throws Exception {
if (logger.isLoggable(Level.FINE)) {
logger.fine("Lazy loading single child for " + containerPath);
}
Node node;
if (pathIsContainer) {
node = PathUtils.getNode(containerPath, session).getNodes().nextNode();
} else {
node = PathUtils.getNode(containerPath, session);
}
return mapper.getChildNodeMapper().getSingleChild(objectClass, node, parentObject, mapper, depth, nodeFilter);
}
}