jdodescriptorstrategy.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.util.Configurator;
import org.apache.log4j.Logger;

import java.util.Vector;

/**
 *
 *
 * @author Siddhartha P. Chandurkar
 * @version 0.9.0
 */
public class JDODescriptorStrategy extends DescriptorStrategy {

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


    //METHODS
    /**
     * This is an abstract method which each class which extends from this
     * class has to override. This method cordinates the transformation
     * of XML to code using appropriate templates
     * @exception   TransformFailedExceptoin    The transformation from XML to code
     *                                          code has failed
     */
    public void transform() throws TransformFailedException {

        StringBuffer xmlBuffer = new StringBuffer();
        xmlBuffer.append("<?xml version='1.0'?>");
        xmlBuffer.append("<jdo-desc>");
        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()));
                }

            }//for
            xmlBuffer.append("</jdo-desc>");
            processor.process(xmlBuffer.toString(), "jdo-desc.xsl", "JDO.jdo", null);
        } catch (NotProcessableException ex) {
            log.fatal(ex);
            throw new TransformFailedException(ex);
        }//try

    }
}