/******************************************************************************
 * Product: Adempiere ERP & CRM Smart Business Solution                        *
 * Copyright (C) 1999-2006 ComPiere, Inc. All Rights Reserved.                *
 * This program is free software; you can redistribute it and/or modify it    *
 * under the terms version 2 of the GNU General Public License as published   *
 * by the Free Software Foundation. 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; if not, write to the Free Software Foundation, Inc.,    *
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.                     *
 * For the text or an alternative of this public license, you may reach us    *
 * ComPiere, Inc., 2620 Augustine Dr. #245, Santa Clara, CA 95054, USA        *
 * or via info@compiere.org or http://www.compiere.org/license.html           *
 *****************************************************************************/
package org.compiere.process;

import java.sql.*;
import java.util.logging.*;
import org.compiere.model.*;
import org.compiere.util.*;


/**
 *	Create Field from Table Column.
 *	(which do not exist in the Tab yet)
 *	
 *  @author Jorg Janke
 *  @version $Id: TabCreateFields.java,v 1.3 2006/07/30 00:51:02 jjanke Exp $
 */
public class TabCreateFields extends SvrProcess
{
	/**	Tab NUmber				*/
	private int	p_AD_Tab_ID= 0;
	
	/**
	 * 	prepare
	 */
	protected void prepare ()
	{
		p_AD_Tab_ID = getRecord_ID();
	}	//	prepare

	/**
	 * 	Process
	 *	@return info
	 *	@throws Exception
	 */
	protected String doIt () throws Exception
	{
		MTab tab = new MTab (getCtx(), p_AD_Tab_ID, get_TrxName());
		if (p_AD_Tab_ID == 0 || tab == null || tab.get_ID() == 0)
			throw new AdempiereSystemError("@NotFound@: @AD_Tab_ID@ " + p_AD_Tab_ID);
		log.info(tab.toString());
		//
		int count = 0;
		String sql = "SELECT * FROM AD_Column c "
			+ "WHERE NOT EXISTS (SELECT * FROM AD_Field f "
				+ "WHERE c.AD_Column_ID=f.AD_Column_ID"
				+ " AND c.AD_Table_ID=?"	//	#1
				+ " AND f.AD_Tab_ID=?)"		//	#2
			+ " AND AD_Table_ID=?"			//	#3
			+ " AND NOT (Name LIKE 'Created%' OR Name LIKE 'Updated%')"
			+ " AND IsActive='Y' "
			+ "ORDER BY Name";
		PreparedStatement pstmt = null;
		try
		{
			pstmt = DB.prepareStatement (sql, get_TrxName());
			pstmt.setInt (1, tab.getAD_Table_ID());
			pstmt.setInt (2, tab.getAD_Tab_ID());
			pstmt.setInt (3, tab.getAD_Table_ID());
			ResultSet rs = pstmt.executeQuery ();
			while (rs.next ())
			{
				MColumn column = new MColumn (getCtx(), rs, get_TrxName());
				//
				MField field = new MField (tab);
				field.setColumn(column);
				if (column.isKey())
					field.setIsDisplayed(false);
				if (field.save())
				{
					addLog(0, null, null, column.getName());
					count++;
				}
			}
			rs.close ();
			pstmt.close ();
			pstmt = null;
		}
		catch (Exception e)
		{
			log.log (Level.SEVERE, sql, e);
		}
		try
		{
			if (pstmt != null)
				pstmt.close ();
			pstmt = null;
		}
		catch (Exception e)
		{
			pstmt = null;
		}
		return "@Created@ #" + count;
	}	//	doIt
	
}	//	TabCreateFields
