| /* |
| * Copyright 2004-2005 The Apache Software Foundation or its licensors, |
| * as applicable. |
| * |
| * 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.apache.jackrabbit.jca; |
| |
| import org.apache.jackrabbit.core.RepositoryImpl; |
| import org.apache.jackrabbit.core.config.RepositoryConfig; |
| |
| import javax.jcr.RepositoryException; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * This class implements the repository manager. |
| */ |
| public final class JCARepositoryManager { |
| |
| /** |
| * Instance of manager. |
| */ |
| private final static JCARepositoryManager INSTANCE = |
| new JCARepositoryManager(); |
| |
| /** |
| * References. |
| */ |
| private final Map references; |
| |
| /** |
| * Construct the manager. |
| */ |
| private JCARepositoryManager() { |
| this.references = new HashMap(); |
| } |
| |
| /** |
| * Create repository. |
| */ |
| public RepositoryImpl createRepository(String homeDir, String configFile) |
| throws RepositoryException { |
| Reference ref = getReference(homeDir, configFile); |
| return ref.create(); |
| } |
| |
| /** |
| * Shutdown the repository. |
| */ |
| public void shutdownRepository(String homeDir, String configFile) { |
| Reference ref = getReference(homeDir, configFile); |
| ref.shutdown(); |
| } |
| |
| /** |
| * Return the reference. |
| */ |
| private synchronized Reference getReference(String homeDir, String configFile) { |
| Reference ref = new Reference(homeDir, configFile); |
| Reference other = (Reference) references.get(ref); |
| |
| if (other == null) { |
| references.put(ref, ref); |
| return ref; |
| } else { |
| return other; |
| } |
| } |
| |
| /** |
| * Return the instance. |
| */ |
| public static JCARepositoryManager getInstance() { |
| return INSTANCE; |
| } |
| |
| /** |
| * Repository reference implementation. |
| */ |
| private final class Reference { |
| /** |
| * Home directory. |
| */ |
| private final String homeDir; |
| |
| /** |
| * Configuration file. |
| */ |
| private final String configFile; |
| |
| /** |
| * Repository instance. |
| */ |
| private RepositoryImpl repository; |
| |
| /** |
| * Reference count. |
| */ |
| private int count; |
| |
| /** |
| * Construct the manager. |
| */ |
| private Reference(String homeDir, String configFile) { |
| this.homeDir = homeDir; |
| this.configFile = configFile; |
| this.repository = null; |
| this.count = 0; |
| } |
| |
| /** |
| * Return the repository. |
| */ |
| public RepositoryImpl create() |
| throws RepositoryException { |
| if (repository == null) { |
| RepositoryConfig config = RepositoryConfig.create(configFile, homeDir); |
| repository = RepositoryImpl.create(config); |
| } |
| |
| count++; |
| return repository; |
| } |
| |
| /** |
| * Shutdown the repository. |
| */ |
| public void shutdown() { |
| if (count > 0) { |
| count--; |
| |
| if (count == 0) { |
| repository.shutdown(); |
| repository = null; |
| } |
| } |
| } |
| |
| /** |
| * Return the hash code. |
| */ |
| public int hashCode() { |
| int result = homeDir != null ? homeDir.hashCode() : 0; |
| result = 37 * result + (configFile != null ? configFile.hashCode() : 0); |
| return result; |
| } |
| |
| /** |
| * Return true if equals. |
| */ |
| public boolean equals(Object o) { |
| if (o == this) { |
| return true; |
| } else if (o instanceof Reference) { |
| return equals((Reference) o); |
| } else { |
| return false; |
| } |
| } |
| |
| /** |
| * Return true if equals. |
| */ |
| private boolean equals(Reference o) { |
| return equals(homeDir, o.homeDir) && |
| equals(configFile, o.configFile); |
| } |
| |
| /** |
| * Return true if equals. |
| */ |
| private boolean equals(String s1, String s2) { |
| if (s1 == s2) { |
| return true; |
| } else if ((s1 == null) || (s2 == null)) { |
| return false; |
| } else { |
| return s1.equals(s2); |
| } |
| } |
| } |
| } |
| |