01: /*
02: * $Id: MessagesNotPresentTag.java 471754 2006-11-06 14:55:09Z husted $
03: *
04: * Licensed to the Apache Software Foundation (ASF) under one
05: * or more contributor license agreements. See the NOTICE file
06: * distributed with this work for additional information
07: * regarding copyright ownership. The ASF licenses this file
08: * to you under the Apache License, Version 2.0 (the
09: * "License"); you may not use this file except in compliance
10: * with the License. You may obtain a copy of the License at
11: *
12: * http://www.apache.org/licenses/LICENSE-2.0
13: *
14: * Unless required by applicable law or agreed to in writing,
15: * software distributed under the License is distributed on an
16: * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17: * KIND, either express or implied. See the License for the
18: * specific language governing permissions and limitations
19: * under the License.
20: */
21: package org.apache.struts.taglib.logic;
22:
23: import javax.servlet.jsp.JspException;
24:
25: /**
26: * Evalute the nested body content of this tag if the specified value is not
27: * present for this request.
28: *
29: * @version $Rev: 471754 $ $Date: 2004-10-16 12:38:42 -0400 (Sat, 16 Oct 2004)
30: * $
31: * @since Struts 1.1
32: */
33: public class MessagesNotPresentTag extends MessagesPresentTag {
34: // ------------------------------------------------------ Protected Methods
35:
36: /**
37: * Evaluate the condition that is being tested by this particular tag, and
38: * return <code>true</code> if the nested body content of this tag should
39: * be evaluated, or <code>false</code> if it should be skipped. This
40: * method must be implemented by concrete subclasses.
41: *
42: * @throws JspException if a JSP exception occurs
43: */
44: protected boolean condition() throws JspException {
45: return (condition(false));
46: }
47: }
|