| /* |
| * 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.command.ext; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import javax.jcr.Repository; |
| |
| import org.apache.commons.chain.Command; |
| import org.apache.commons.chain.Context; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.jackrabbit.command.CommandHelper; |
| import org.apache.jackrabbit.core.RepositoryImpl; |
| import org.apache.jackrabbit.core.config.RepositoryConfig; |
| |
| /** |
| * <p> |
| * Get a Jackrabbit instance and put it in the <code>Context</code>.<br> |
| * This commands maintains a cache with already created instances.<br> |
| * if there's no Repository for the given config and home settings a new |
| * instance will be created and cached. |
| * </p> |
| */ |
| public class StartJackrabbitSingleton implements Command { |
| /** logger */ |
| private static Log log = LogFactory.getLog(StartJackrabbitSingleton.class); |
| |
| /** cache */ |
| private static Map cache = new HashMap(); |
| |
| /** config file */ |
| private String configKey = "config"; |
| |
| /** home folder */ |
| private String homeKey = "home"; |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public boolean execute(Context ctx) throws Exception { |
| String config = (String) ctx.get(this.configKey); |
| String home = (String) ctx.get(this.homeKey); |
| |
| if (log.isDebugEnabled()) { |
| log |
| .debug("starting jackrabbit. config=" + config + " home=" |
| + home); |
| } |
| |
| try { |
| synchronized (cache) { |
| String key = config + "@" + home; |
| Repository repo = (Repository) cache.get(key); |
| if (repo == null) { |
| String msg = "Starting Jakrabbit instance"; |
| log.info(msg); |
| RepositoryConfig conf = RepositoryConfig.create(config, |
| home); |
| repo = RepositoryImpl.create(conf); |
| cache.put(key, repo); |
| } |
| CommandHelper.setRepository(ctx, repo); |
| } |
| } catch (Exception e) { |
| log.error("Unable to start jackrabbit", e); |
| throw e; |
| } |
| return false; |
| } |
| |
| /** |
| * @return the config key |
| */ |
| public String getConfigKey() { |
| return configKey; |
| } |
| |
| /** |
| * @param configKey |
| * the config key to set |
| */ |
| public void setConfigKey(String configKey) { |
| this.configKey = configKey; |
| } |
| |
| /** |
| * @return the home key |
| */ |
| public String getHomeKey() { |
| return homeKey; |
| } |
| |
| /** |
| * @param homeKey |
| * the home key to set |
| */ |
| public void setHomeKey(String homeKey) { |
| this.homeKey = homeKey; |
| } |
| |
| } |