strategyfactory.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;

//<Imports>
//Java imports

import com.jenerator.util.ArgumentParser;

import java.util.Vector;

//</Imports>


/**
 * StrategyFactory
 * It is a factory class which instantiates the different Strategies based on the information
 * obtained from the ArgumentParser
 * It is based on the Factory pattern
 * @author  Siddhartha P. Chandurkar
 * @version 0.9.0
 *
 */
public class StrategyFactory {


    //CONSTRUCTORS
    /**
     * Default Constructor
     */
    public StrategyFactory() {

    }

    /**
     * getStrategies
     * A Factory method which takes the ArgumentParser as an argument. It asks which options are
     * selected for code generation, it then instantiates the respective strategies and fills them in the
     * strats vectore which it returns.
     * @param   argParser   An ArgumentParser
     */
    public Vector getStrategies(ArgumentParser argParser) throws StrategyNotFoundException {
        Vector strats = new Vector();
        if (argParser.isDesc() == true)
            strats.addElement(new JenDescStrategy());
        if (argParser.isRemote() == true)
            strats.addElement(new RemoteStrategy());
        if (argParser.isHome() == true)
            strats.addElement(new HomeStrategy());
        if (argParser.isBean() == true) {
            strats.addElement(new BeanStrategy());
            strats.addElement(new ValueObjectStrategy());
            strats.addElement(new PrimKeyStrategy());
            strats.addElement(new ExceptionStrategy());
        }
        if (argParser.isLocal() == true)
            strats.addElement(new LocalStrategy());
        if (argParser.isDD() == true)
            strats.addElement(new DDStrategy());
        if (argParser.isJUNIT() == true)
            strats.addElement(new JUnitStrategy());
        if (argParser.isANT() == true)
            strats.addElement(new AntStrategy());
        if (argParser.isPATTERN() == true)
            strats.addElement(new PatternStrategy());
        if (argParser.isSERVLET() == true)
            strats.addElement(new ViewStrategy());
        if (argParser.isJDO() == true)
            strats.addElement(new JDOStrategy());
        if (argParser.isUNIT_TESTS() == true)
            strats.addElement(new UnitTestStrategy());
        if (strats.size() == 0)
            throw new StrategyNotFoundException();

        return strats;
    }//getStrategies


}//StrategyFactory