/*
* 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 as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Alex Rojkov
*/
package javax.faces.webapp;
import javax.servlet.jsp.tagext.TagSupport;
import javax.servlet.jsp.JspException;
import javax.faces.validator.Validator;
import javax.faces.component.UIComponent;
import javax.faces.component.EditableValueHolder;
public abstract class ValidatorELTag
extends TagSupport
{
public int doStartTag()
throws JspException
{
UIComponentClassicTagBase parent
= UIComponentClassicTagBase.getParentUIComponentClassicTagBase(
pageContext);
if (parent == null)
throw new JspException(
"ValidatorELTag must be nested inside a UIComponent tag.");
UIComponent comp = parent.getComponentInstance();
if (parent.getCreated()) {
if (!(comp instanceof EditableValueHolder))
throw new JspException(
"UIComponent parent of validator must be a EditableValueHolder.");
EditableValueHolder valueHolder = (EditableValueHolder) comp;
Validator validator = createValidator();
valueHolder.addValidator(validator);
}
return SKIP_BODY;
}
protected abstract Validator createValidator()
throws JspException;
}