ddstrategy.java

一个java 代码生成器

/**
 * Copyright (c) 2002, Siddhartha P. Chandurkar [e-mail]
 * All rights reserved.
 * Licensed under the Academic Free License version 1.1
 * See the file LICENSE.TXT for details.
 * LICENSE.txt is located in the directory  <install-directory>\Jenerator
 * of your Jenertaor Installation.
 *
 */
package com.jenerator.transformer;

import com.jenerator.struct.ConfigStructs;
import com.jenerator.struct.ejb.EntityStruct;
import com.jenerator.struct.ejb.MDBStruct;
import com.jenerator.struct.ejb.SessionStruct;
import com.jenerator.util.Configurator;
import org.apache.log4j.Logger;

import java.io.File;
import java.util.Vector;


/**
 * DDStrategy
 * This strategy implements the logic to generate the EJB deployment descriptor i.e. <i>ejb-jar.xml</i>
 * It is based on the strategy pattern
 * @see TransformStrategy
 * @author  Siddhartha P. Chandurkar
 * @version 0.9.0
 *
 */
public class DDStrategy extends DescriptorStrategy {

    //ATTRIBUTES
    private static Logger log = Logger.getLogger(com.jenerator.transformer.DDStrategy.class.getName());

    //METHODS


    /**
     * This method overides the super class <code>transform()</code> method
     */
    public void transform() throws TransformFailedException {
        StringBuffer xmlBuffer = new StringBuffer();
        xmlBuffer.append("<?xml version='1.0'?>");
        xmlBuffer.append("<dd>");
        try {
            ConfigStructs configStructs = Configurator.getInstance().getConfigStructs();
            Vector ejbStructs = configStructs.getEjbStructs();
            for (int i = 0; i < ejbStructs.size(); i++) {
                if (ejbStructs.elementAt(i) instanceof com.jenerator.struct.ejb.EntityStruct) {
                    EntityStruct entityStruct = (EntityStruct) ejbStructs.elementAt(i);
                    xmlBuffer.append(removeProlog(entityStruct.toXml()));
                } else if (ejbStructs.elementAt(i) instanceof com.jenerator.struct.ejb.SessionStruct) {
                    SessionStruct sessionStruct = (SessionStruct) ejbStructs.elementAt(i);
                    xmlBuffer.append(removeProlog(sessionStruct.toXml()));
                } else if (ejbStructs.elementAt(i) instanceof com.jenerator.struct.ejb.MDBStruct) {
                    MDBStruct mdbStruct = (MDBStruct) ejbStructs.elementAt(i);
                    xmlBuffer.append(removeProlog(mdbStruct.toXml()));
                }

            }//for
            xmlBuffer.append("</dd>");
            processor.process(xmlBuffer.toString(), "dd.xsl", "ejb-jar.xml", File.separator + "META-INF");

        } catch (NotProcessableException ex) {
            log.fatal(ex);
            throw new TransformFailedException(ex);
        }//try

    }//tranform


}//DDStrategy