/*
* 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.spi2jcr;
import java.util.Map;
import java.util.HashMap;
import javax.jcr.Node;
import javax.jcr.RepositoryException;
import javax.jcr.UnsupportedRepositoryOperationException;
import javax.jcr.PropertyType;
import javax.jcr.Session;
import javax.jcr.NamespaceException;
import javax.jcr.nodetype.NodeType;
import org.apache.jackrabbit.spi.Event;
import org.apache.jackrabbit.spi.Path;
import org.apache.jackrabbit.spi.NodeId;
import org.apache.jackrabbit.spi.ItemId;
import org.apache.jackrabbit.spi.Name;
import org.apache.jackrabbit.spi.QValue;
import org.apache.jackrabbit.spi.IdFactory;
import org.apache.jackrabbit.spi.QValueFactory;
import org.apache.jackrabbit.spi.commons.value.ValueFormat;
import org.apache.jackrabbit.spi.commons.EventImpl;
import org.apache.jackrabbit.spi.commons.conversion.NamePathResolver;
import org.apache.jackrabbit.spi.commons.conversion.NameException;
import org.apache.jackrabbit.spi.commons.conversion.NameResolver;
/**
* <code>EventFactory</code> implements a factory for SPI Event instances.
*/
class EventFactory {
private final Session session;
private final NamePathResolver resolver;
private final IdFactory idFactory;
private final QValueFactory qValueFactory;
public EventFactory(Session session,
NamePathResolver resolver,
IdFactory idFactory,
QValueFactory qValueFactory) {
this.session = session;
this.resolver = resolver;
this.idFactory = idFactory;
this.qValueFactory = qValueFactory;
}
public Event fromJCREvent(javax.jcr.observation.Event e)
throws RepositoryException {
Path p = resolver.getQPath(e.getPath());
Path parent = p.getAncestor(1);
int type = e.getType();
NodeId parentId = idFactory.createNodeId((String) null, parent);
String identifier = e.getIdentifier();
ItemId itemId;
Node node = null;
if (identifier != null) {
itemId = idFactory.fromJcrIdentifier(e.getIdentifier());
try {
node = session.getItem(e.getPath()).getParent();
} catch (RepositoryException re) {
// ignore. TODO improve
}
} else {
switch (type) {
case Event.NODE_ADDED:
case Event.NODE_MOVED:
node = session.getItem(e.getPath()).getParent();
case Event.NODE_REMOVED:
itemId = idFactory.createNodeId((String) null, p);
break;
case Event.PROPERTY_ADDED:
case Event.PROPERTY_CHANGED:
node = session.getItem(e.getPath()).getParent();
case Event.PROPERTY_REMOVED:
itemId = idFactory.createPropertyId(parentId,
p.getNameElement().getName());
break;
case Event.PERSIST:
default:
itemId = null;
}
}
Name nodeTypeName = null;
Name[] mixinTypes = new Name[0];
if (node != null) {
try {
parentId = idFactory.createNodeId(node.getUUID(), null);
} catch (UnsupportedRepositoryOperationException ex) {
// not referenceable
}
nodeTypeName = resolver.getQName(node.getPrimaryNodeType().getName());
mixinTypes = getNodeTypeNames(node.getMixinNodeTypes(), resolver);
}
Map<Name, QValue> info = new HashMap<Name, QValue>();
Map<String, Object> jcrInfo = e.getInfo();
for (Map.Entry<String, Object> entry : jcrInfo.entrySet()) {
String key = entry.getKey();
Object value = entry.getValue();
Name name = resolver.getQName(key);
if (value != null) {
// event information is generated for NODE_MOVED only in which
// case all values are of type PATH.
QValue v = ValueFormat.getQValue(value.toString(), PropertyType.PATH, resolver, qValueFactory);
info.put(name, v);
} else {
info.put(name, null);
}
}
return new EventImpl(e.getType(), p, itemId, parentId, nodeTypeName,
mixinTypes, e.getUserID(), e.getUserData(), e.getDate(), info);
}
/**
* Returns the names of the passed node types using the namespace resolver
* to parse the names.
*
* @param nt the node types
* @param resolver the name resolver.
* @return the names of the node types.
* @throws NameException if a node type returns an illegal name.
* @throws NamespaceException if the name of a node type contains a prefix
* that is not known to <code>resolver</code>.
*/
private static Name[] getNodeTypeNames(NodeType[] nt, NameResolver resolver)
throws NameException, NamespaceException {
Name[] names = new Name[nt.length];
for (int i = 0; i < nt.length; i++) {
Name ntName = resolver.getQName(nt[i].getName());
names[i] = ntName;
}
return names;
}
}