org.apache.jackrabbit.spi.commons.EventFilterImpl Maven / Gradle / Ivy
/*
* 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.spi.commons;
import java.io.Serializable;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import javax.jcr.RepositoryException;
import org.apache.jackrabbit.spi.Event;
import org.apache.jackrabbit.spi.EventFilter;
import org.apache.jackrabbit.spi.Name;
import org.apache.jackrabbit.spi.NodeId;
import org.apache.jackrabbit.spi.Path;
/**
* EventFilterImpl
is the simple bean style implementation of an
* {@link EventFilter}.
*/
public class EventFilterImpl implements EventFilter, Serializable {
private final int eventTypes;
private final boolean isDeep;
private final Path absPath;
private final Set uuids;
private final Set nodeTypeNames;
private final boolean noLocal;
/**
* Creates a new EventFilterImpl
.
*
* @param eventTypes the event types this filter is interested in.
* @param absPath filter events that are below this path.
* @param isDeep whether this filter is applied deep.
* @param uuids the jcr:uuid of the nodes this filter allows.
* @param nodeTypeNames the Names of the already resolved node types this
* filter allows.
* @param noLocal whether this filter accepts local events or not.
*/
public EventFilterImpl(int eventTypes,
Path absPath,
boolean isDeep,
String[] uuids,
Set nodeTypeNames,
boolean noLocal) {
this.eventTypes = eventTypes;
this.absPath = absPath;
this.isDeep = isDeep;
this.uuids = uuids != null ? new HashSet(Arrays.asList(uuids)) : null;
this.nodeTypeNames = nodeTypeNames != null ? new HashSet(nodeTypeNames) : null;
this.noLocal = noLocal;
}
/**
* {@inheritDoc}
*/
public boolean accept(Event event, boolean isLocal) {
int type = event.getType();
// check type
if ((type & eventTypes) == 0) {
return false;
}
// check local flag
if (isLocal && noLocal) {
return false;
}
// UUIDs, types, and paths do not need to match for persist
if (event.getType() == Event.PERSIST) {
return true;
}
// check UUIDs
NodeId parentId = event.getParentId();
if (uuids != null) {
if (parentId.getPath() == null) {
if (!uuids.contains(parentId.getUniqueID())) {
return false;
}
} else {
return false;
}
}
// check node types
if (nodeTypeNames != null) {
Set eventTypes = new HashSet();
eventTypes.addAll(Arrays.asList(event.getMixinTypeNames()));
eventTypes.add(event.getPrimaryNodeTypeName());
// create intersection
eventTypes.retainAll(nodeTypeNames);
if (eventTypes.isEmpty()) {
return false;
}
}
// finally check path
try {
Path eventPath = event.getPath().getAncestor(1);
boolean match = eventPath.equals(absPath);
if (!match && isDeep) {
match = eventPath.isDescendantOf(absPath);
}
return match;
} catch (RepositoryException e) {
// should never get here
}
// if we get here an exception occurred while checking for the path
return false;
}
/**
* @return the event types this event filter accepts.
*/
public int getEventTypes() {
return eventTypes;
}
/**
* @return true
if this event filter is deep.
*/
public boolean isDeep() {
return isDeep;
}
/**
* @return the path to the item where events are filtered.
*/
public Path getAbsPath() {
return absPath;
}
/**
* @return the uuids of the nodes of this filter or null
if
* this filter does not care about uuids.
*/
public String[] getUUIDs() {
if (uuids == null) {
return null;
} else {
return uuids.toArray(new String[uuids.size()]);
}
}
/**
* @return an unmodifiable set of node type names or null
if
* this filter does not care about node types.
*/
public Set getNodeTypeNames() {
if (nodeTypeNames == null) {
return null;
} else {
return Collections.unmodifiableSet(nodeTypeNames);
}
}
/**
* @return if this filter accepts local events.
*/
public boolean getNoLocal() {
return noLocal;
}
/**
* Returns a string representation of this EventFilter instance.
* {@inheritDoc}
*/
@Override
public String toString() {
return new StringBuffer(getClass().getName())
.append("[")
.append("eventTypes: ").append(eventTypes).append(", ")
.append("absPath: ").append(absPath).append(", ")
.append("isDeep: ").append(isDeep).append(", ")
.append("uuids: ").append(uuids).append(", ")
.append("nodeTypeNames: ").append(nodeTypeNames).append(", ")
.append("noLocal: ").append(noLocal)
.append("]")
.toString();
}
}