/*
* Copyright 2004, 2005, 2006 Odysseus Software GmbH
*
* 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 de.odysseus.calyxo.panels;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.StringTokenizer;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import de.odysseus.calyxo.base.ModuleContext;
import de.odysseus.calyxo.base.conf.ConfigException;
import de.odysseus.calyxo.panels.conf.PanelsRootConfig;
import de.odysseus.calyxo.panels.conf.impl.PanelsRootConfigParser;
/**
* The panels service class creates and installs/uninstalls an instance of
* {@link de.odysseus.calyxo.panels.PanelsSupport} into module context.
*
* @author Christoph Beck
*/
public class PanelsService {
private static final Log log = LogFactory.getLog(PanelsService.class);
/**
* Create, initialize and install panels support instance in context scope.
* @param context the module we're in
* @param config comma-separated list of paths to configuration files
* @throws ConfigException
*/
public void init(ModuleContext context, String config) throws ConfigException {
log.trace("init() start");
// Create list of urls to config files
ArrayList list = new ArrayList();
StringTokenizer tokens = new StringTokenizer(config,",");
while (tokens.hasMoreTokens()) {
String token = tokens.nextToken().trim();
URL url = null;
try {
url = context.getServletContext().getResource(token);
} catch (MalformedURLException e) {
throw new ConfigException(e);
}
if (url == null) {
throw new ConfigException("Could not find resource " + token);
} else {
list.add(url);
}
}
URL[] inputs = (URL[])list.toArray(new URL[list.size()]);
// parse files into configuration bean
PanelsRootConfig root = null;
PanelsRootConfigParser parser = new PanelsRootConfigParser(context);
root = parser.parse(inputs);
// create and install support instance
PanelsSupport support = new PanelsSupport(root);
context.setAttribute(PanelsSupport.PANELS_SUPPORT_KEY, support);
log.trace("init() end");
}
/**
* Remove panels support instance from module scope
* @param context the module we're in
*/
public void destroy(ModuleContext context) {
context.removeAttribute(PanelsSupport.PANELS_SUPPORT_KEY);
}
}