/**
*
* Copyright 2005 Unity Systems, LLC. http://www.unity-systems.com
*
* 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.servicemix.client;
import java.io.File;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.servicemix.jbi.config.spring.XBeanProcessor;
import org.servicemix.jbi.deployment.Descriptor;
import org.xbean.spring.context.FileSystemXmlApplicationContext;
import java.util.Arrays;
/**
*
* Factory that be used to build a POJO representation of the JBI descriptor
*
* @author <a href="mailto:pdodds@unity-systems.com">Philip Dodds </a>
*
*/
public class DescriptorFactory {
private static final String DESCRIPTOR_FILE = "jbi.xml";
private static final Log log = LogFactory.getLog(DescriptorFactory.class
.getName());
private static final String META_INF = "/META-INF";
/**
* Returns a descriptor in POJO form for a given <i>ComponentContext</i>
*
* @param installRoot
* The root of the installation
* @return The deployment descriptor
*/
public static Descriptor getDescriptor(String installRoot) {
Descriptor root = null;
File descriptor = new File(installRoot + META_INF, DESCRIPTOR_FILE);
log.debug("Checking for descriptor " + descriptor.getAbsolutePath());
if (descriptor.exists()) {
try {
Thread.currentThread().setContextClassLoader(Descriptor.class.getClassLoader());
FileSystemXmlApplicationContext context = new FileSystemXmlApplicationContext("file:///"
+ descriptor.getAbsolutePath(),
Arrays.asList(new Object[] { new XBeanProcessor()}));
root = (Descriptor) context.getBean("jbi");
log.debug("Parsed descriptor " + root);
} catch (Throwable e) {
throw new RuntimeException("Unable to parse the jbi.xml", e);
}
} else {
throw new RuntimeException("Descriptor file: " + descriptor + " doesn't exist");
}
return root;
}
/**
* Returns true if a JBI descriptor exists in this installation root
*
* @param installRoot
* The installation root
* @return True if a jbi.xml exists
*/
public static boolean hasDescriptor(String installRoot) {
return new File(installRoot + META_INF, DESCRIPTOR_FILE).exists();
}
}