/*
* $Id: NotPresentTag.java 471754 2006-11-06 14:55:09Z husted $
*
* 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.struts.taglib.logic;
import javax.servlet.jsp.JspException;
/**
* Evalute the nested body content of this tag if the specified value is not
* present for this request.
*
* @version $Rev: 471754 $ $Date: 2004-10-16 12:38:42 -0400 (Sat, 16 Oct 2004)
* $
*/
public class NotPresentTag extends PresentTag {
// ------------------------------------------------------ Protected Methods
/**
* Evaluate the condition that is being tested by this particular tag, and
* return <code>true</code> if the nested body content of this tag should
* be evaluated, or <code>false</code> if it should be skipped. This
* method must be implemented by concrete subclasses.
*
* @throws JspException if a JSP exception occurs
*/
protected boolean condition()
throws JspException {
return (condition(false));
}
}