/*

  * SQLElements object-oriented SQL parsing and generation library

  * 

  * Copyright (c) 2003, 2004, 2005 Israfil Consulting Services Corporation

  * Copyright (c) 2003, 2004, 2005 Christian Edward Gruber

  * All Rights Reserved

  * 

  *  This library is free software; you can redistribute it and/or modify 

  *  it under the terms of the GNU Lesser General Public License as published 

  *  by the Free Software Foundation; either version 2.1 of the License, or 

  *  (at your option) any later version.

  *

  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 

  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 

  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 

  * IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 

  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 

  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 

  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 

  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 

  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 

  * OF SUCH DAMAGE.

  *

  *  You should have received a copy of the GNU Lesser General Public License 

  *  along with this library; if not, please visit http://www.gnu.org/licenses/lgpl.html

  *

  * $Id: AbstractParameterizedCommand.java 27 2006-01-14 07:50:08 -0500 (Sat, 14 Jan 2006) cgruber $

  */

 package org.israfil.sqlelements;

 import java.util.Set;

 import net.israfil.foundation.collections.ArraySet;

 import org.israfil.sqlelements.constraints.Constraint;

 /**

  * 

  * @author <a href="mailto:cgruber@israfil.net">Christian Edward Gruber </a>

  * @author Latest: $Author: cgruber $

  * @version $Revision: 27 $

  */

 public abstract class AbstractParameterizedCommand extends AbstractCommand implements ParameterizedCommand {

     protected Set<SQLParameter> parameters = new ArraySet<SQLParameter>();

     public Set<SQLParameter> getParameters() { return parameters; }

     protected AbstractParameterizedCommand() {

             super();

     }

     public AbstractParameterizedCommand (Constraint constraint, SQLParameter ... parameters) {

         super(constraint);

         setParameters(parameters);  

     }

     public void setParameters(SQLParameter ... parameters) 

     {

         for (SQLParameter p : parameters) setParameter(p);

     }

     public void setParameter(SQLParameter parameter) 

     {

         if (parameter.column.getTable() == null) throw new IllegalArgumentException("Must supply column in parameters that contain a table.");

         if (table == null) table = parameter.column.getTable();

         if (!table.equals(parameter.column.getTable())) throw new IllegalArgumentException("Must supply columns only from the same table.");

         for (SQLParameter current : parameters)

             if (current.column == parameter.column) parameters.remove(current);

         parameters.add(parameter);

     }

     public void setParameter(Column c,Object v) {

         setParameter(new SQLParameter(c,v));

     }

     public Object getParameterValue(Column c) {

         for (SQLParameter p : parameters) if (p.column == c) return p.value;

         return null;

     }    

 }