/**************************************************************************
/* This class creates a bean-class from a velocity template.
/*
/* Copyright (c) 2004 by Bernhard Bablok (mail@bablokb.de)
/*
/* This program is free software; you can redistribute it and/or modify
/* it under the terms of the GNU General Public License as published
/* by  the Free Software Foundation; either version 2 of the License or
/* (at your option) any later version.
/*
/* This program is distributed in the hope that it will be useful, but
/* WITHOUT ANY WARRANTY; without even the implied warranty of
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
/* GNU General Public License for more details.
/*
/* You should have received a copy of the GNU General Public License
/* along with this program; see the file COPYING.  If not, write to
/* the Free Software Foundation Inc., 59 Temple Place - Suite 330,
/* Boston, MA  02111-1307 USA
/**************************************************************************/

import java.util.*;
import java.io.*;

import org.apache.velocity.app.*;
import org.apache.velocity.*;

/**
   This class creates a bean-class from a velocity template.

   @version $Revision: 1.7 $
   @author  $Author: bablokb $
*/

public class BeanGen {

  /**
     The bean-template.
  */

  private static final String BEAN_TEMPLATE = "bean.vm",
    TEMPLATE_ENC = "ISO-8859-15";

  private VelocityContext iContext;

  //////////////////////////////////////////////////////////////////////////////

  /**
     Constructor. Intitializes Velocity.
  */

  private BeanGen() throws Exception {
    Properties prop = new Properties();
    prop.put("velocimacro.library","bean-macros.vm");
    prop.put("runtime.log","/tmp/velocity.log");
    Velocity.init(prop);    
    iContext = new VelocityContext();
  }
  
  //////////////////////////////////////////////////////////////////////////////

  /**
     Fill the context with all variables.
  */

  private void fillContext() {
    iContext.put("year",
      new Integer(Calendar.getInstance().get(Calendar.YEAR)));

    // add author description
    Hashtable ad = new Hashtable();
      ad.put("name","B.Bablok");
      ad.put("email","mail@bablokb.de");
    iContext.put("author",ad);

    // add class description
    Hashtable cd = new Hashtable();
      cd.put("name","Person");
      cd.put("package","de.bablokb.beans");
      cd.put("qualifier","public final");
      cd.put("extends","Object");
      cd.put("implements","Serializable");
      
      Hashtable imports = new Hashtable();
        imports.put("1","java.io.*");
        imports.put("2","java.util.*");
      cd.put("imports",imports);

      Hashtable properties = new Hashtable();
        Hashtable prop1 = new Hashtable();
          prop1.put("type","String");
          prop1.put("name","Name");
	properties.put("a",prop1);
        Hashtable prop2 = new Hashtable();
          prop2.put("type","ArrayList");
          prop2.put("name","EmailAddresses");
	properties.put("b",prop2);
      cd.put("properties",properties);
    iContext.put("clazz",cd);
  }

  //////////////////////////////////////////////////////////////////////////////

  /**
     Merge template and context.
  */

  private void merge() throws Exception {
    PrintWriter out = new PrintWriter(System.out);
    Velocity.mergeTemplate(BEAN_TEMPLATE,TEMPLATE_ENC,iContext,out);
    out.flush();
  }

  //////////////////////////////////////////////////////////////////////////////

  /**
     The main-method takes a bean-configuration-file as input.
  */

  public static void main(String[] args) {
    try {
      BeanGen gen = new BeanGen();
      gen.fillContext();
      gen.merge();
    } catch (Exception e) {
      e.printStackTrace();
    }
  }    
}