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Java > Open Source Codes > com > jcorporate > expresso > ext > struts > taglib > logic > ExNotPresentTag


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64
65 package com.jcorporate.expresso.ext.struts.taglib.logic;
66
67 import javax.servlet.jsp.JspException JavaDoc;
68
69
70 /**
71  * Evalute the nested body content of this tag if the specified value
72  * is not present for this request.
73  *
74  * @author Craig R. McClanahan
75  */
76 public class ExNotPresentTag
77         extends ExPresentTag {
78     // ------------------------------------------------------ Protected Methods
79 /**
80      * Evaluate the condition that is being tested by this particular tag,
81      * and return <code>true</code> if the nested body content of this tag
82      * should be evaluated, or <code>false</code> if it should be skipped.
83      * This method must be implemented by concrete subclasses.
84      *
85      * @return the inverse of present condition
86      * @throws JspException if a JSP exception occurs
87      */
88     protected boolean condition()
89             throws JspException JavaDoc {
90         return (condition(false));
91     }
92 }
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