/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.jsf.taglib;
import javax.el.ELContext;
import javax.el.ValueExpression;
import javax.faces.application.Application;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import javax.faces.webapp.ConverterELTag;
public class ConvertByIdTag extends ConverterELTag
{
private ValueExpression _bindingExpr;
private ValueExpression _converterIdExpr;
public void setBinding(ValueExpression expr)
{
_bindingExpr = expr;
}
public void setConverterId(ValueExpression expr)
{
_converterIdExpr = expr;
}
protected Converter createConverter()
{
FacesContext context = FacesContext.getCurrentInstance();
Application app = context.getApplication();
Converter converter = null;
ELContext elContext = context.getELContext();
if (_bindingExpr != null)
converter = (Converter) _bindingExpr.getValue(elContext);
if (converter == null) {
String id = (String) _converterIdExpr.getValue(elContext);
converter = app.createConverter(id);
if (_bindingExpr != null)
_bindingExpr.setValue(elContext, converter);
}
return converter;
}
}