/*
* Copyright 2000-2004 The Apache Software Foundation
*
* 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.tools.ant.taskdefs.optional.ejb;
import java.io.File;
import java.io.FileInputStream;
import java.io.ObjectInputStream;
import javax.ejb.deployment.DeploymentDescriptor;
/**
* A helper class which performs the actual work of the ddcreator task.
*
* This class is run with a classpath which includes the weblogic tools and the home and remote
* interface class files referenced in the deployment descriptors being built.
*
* @author Conor MacNeill, Cortex ebusiness Pty Limited
*/
public class DDCreatorHelper {
/**
* The root directory of the tree containing the textual deployment descriptors.
*/
private File descriptorDirectory;
/**
* The directory where generated serialised deployment descriptors are written.
*/
private File generatedFilesDirectory;
/**
* The descriptor text files for which a serialised descriptor is to be created.
*/
String[] descriptors;
/**
* The main method.
*
* The main method creates an instance of the DDCreatorHelper, passing it the
* args which it then processes.
*/
public static void main(String[] args) throws Exception {
DDCreatorHelper helper = new DDCreatorHelper(args);
helper.process();
}
/**
* Initialise the helper with the command arguments.
*
*/
private DDCreatorHelper(String[] args) {
int index = 0;
descriptorDirectory = new File(args[index++]);
generatedFilesDirectory = new File(args[index++]);
descriptors = new String[args.length - index];
for (int i = 0; index < args.length; ++i) {
descriptors[i] = args[index++];
}
}
/**
* Do the actual work.
*
* The work proceeds by examining each descriptor given. If the serialised
* file does not exist or is older than the text description, the weblogic
* DDCreator tool is invoked directly to build the serialised descriptor.
*/
private void process() throws Exception {
for (int i = 0; i < descriptors.length; ++i) {
String descriptorName = descriptors[i];
File descriptorFile = new File(descriptorDirectory, descriptorName);
int extIndex = descriptorName.lastIndexOf(".");
String serName = null;
if (extIndex != -1) {
serName = descriptorName.substring(0, extIndex) + ".ser";
} else {
serName = descriptorName + ".ser";
}
File serFile = new File(generatedFilesDirectory, serName);
// do we need to regenerate the file
if (!serFile.exists() || serFile.lastModified() < descriptorFile.lastModified()
|| regenerateSerializedFile(serFile)) {
String[] args = {"-noexit",
"-d", serFile.getParent(),
"-outputfile", serFile.getName(),
descriptorFile.getPath()};
try {
weblogic.ejb.utils.DDCreator.main(args);
} catch (Exception e) {
// there was an exception - run with no exit to get proper error
String[] newArgs = {"-d", generatedFilesDirectory.getPath(),
"-outputfile", serFile.getName(),
descriptorFile.getPath()};
weblogic.ejb.utils.DDCreator.main(newArgs);
}
}
}
}
/**
* EJBC will fail if the serialized descriptor file does not match the bean classes.
* You can test for this by trying to load the deployment descriptor. If it fails,
* the serialized file needs to be regenerated because the associated class files
* don't match.
*/
private boolean regenerateSerializedFile(File serFile) {
try {
FileInputStream fis = new FileInputStream(serFile);
ObjectInputStream ois = new ObjectInputStream(fis);
DeploymentDescriptor dd = (DeploymentDescriptor) ois.readObject();
fis.close();
// Since the descriptor read properly, everything should be o.k.
return false;
} catch (Exception e) {
// Weblogic will throw an error if the deployment descriptor does
// not match the class files.
return true;
}
}
}