/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.myfaces.taglib.core;
import javax.el.ELContext;
import javax.el.ValueExpression;
import javax.faces.application.Application;
import javax.faces.context.FacesContext;
import javax.faces.validator.RequiredValidator;
import javax.faces.validator.Validator;
import javax.faces.webapp.ValidatorELTag;
import javax.servlet.jsp.JspException;
/**
* JSP Tag class for {@link javax.faces.validator.RequiredValidator}.
*
* @author Leonardo Uribe
* @since 2.0
*/
public class ValidateRequiredTag extends ValidatorELTag
{
/**
*
*/
private static final long serialVersionUID = 6569308536432242026L;
private ValueExpression _binding;
public void setBinding(ValueExpression binding)
{
_binding = binding;
}
@Override
public void release()
{
_binding = null;
}
@Override
protected Validator createValidator() throws JspException
{
FacesContext facesContext = FacesContext.getCurrentInstance();
ELContext elContext = facesContext.getELContext();
if (null != _binding)
{
Object validator;
try
{
validator = _binding.getValue(elContext);
}
catch (Exception e)
{
throw new JspException("Error while creating the Validator", e);
}
if (validator instanceof RequiredValidator)
{
return (Validator)validator;
}
}
Application application = facesContext.getApplication();
RequiredValidator validator = null;
try
{
validator = (RequiredValidator) application.createValidator(RequiredValidator.VALIDATOR_ID);
}
catch (Exception e)
{
throw new JspException("Error while creating the Validator", e);
}
if (null != validator)
{
if (null != _binding)
{
_binding.setValue(elContext, validator);
}
}
return validator;
}
}