/*
* 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.query.lucene.directory;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.RAMDirectory;
import org.apache.jackrabbit.core.query.lucene.SearchIndex;
import java.util.Map;
import java.util.HashMap;
import java.io.IOException;
/**
* <code>RAMDirectoryManager</code> implements a directory manager for
* {@link RAMDirectory} instances.
*/
public class RAMDirectoryManager implements DirectoryManager {
/**
* Map of directories. Key=String(directory name), Value=Directory.
*/
private final Map<String, Directory> directories = new HashMap<String, Directory>();
/**
* {@inheritDoc}
*/
public void init(SearchIndex handler) throws IOException {
}
/**
* {@inheritDoc}
*/
public boolean hasDirectory(String name) throws IOException {
synchronized (directories) {
return directories.containsKey(name);
}
}
/**
* {@inheritDoc}
*/
public Directory getDirectory(String name) {
synchronized (directories) {
Directory dir = directories.get(name);
if (dir == null) {
dir = new RAMDirectory();
directories.put(name, dir);
}
return dir;
}
}
/**
* {@inheritDoc}
*/
public String[] getDirectoryNames() throws IOException {
synchronized (directories) {
return directories.keySet().toArray(
new String[directories.size()]);
}
}
/**
* {@inheritDoc}
*/
public boolean delete(String name) {
synchronized (directories) {
directories.remove(name);
}
return true;
}
/**
* {@inheritDoc}
*/
public boolean rename(String from, String to) {
synchronized (directories) {
if (directories.containsKey(to)) {
return false;
}
Directory dir = directories.remove(from);
if (dir == null) {
return false;
}
directories.put(to, dir);
return true;
}
}
/**
* {@inheritDoc}
*/
public void dispose() {
}
}