Apache Struts API Documentation: Class NotPresentTag

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org.apache.struts.taglib.logic Class NotPresentTag

java.lang.Object
  |
  +--javax.servlet.jsp.tagext.TagSupport
        |
        +--org.apache.struts.taglib.logic.ConditionalTagBase
              |
              +--org.apache.struts.taglib.logic.PresentTag
                    |
                    +--org.apache.struts.taglib.logic.NotPresentTag

All Implemented Interfaces:: java.io.Serializable, javax.servlet.jsp.tagext.Tag

Direct Known Subclasses:: NestedNotPresentTag

public class NotPresentTag
extends PresentTag

Evalute the nested body content of this tag if the specified value is not present for this request.

Version:: $Rev: 54929 $ $Date: 2004-10-16 17:38:42 +0100 (Sat, 16 Oct 2004) $
See Also:: Serialized Form

Fields inherited from class org.apache.struts.taglib.logic.PresentTag

ROLE_DELIMITER

Fields inherited from class org.apache.struts.taglib.logic.ConditionalTagBase

cookie, header, messages, name, parameter, property, role, scope, user

Fields inherited from class javax.servlet.jsp.tagext.TagSupport

id, pageContext, parent, values

Fields inherited from interface javax.servlet.jsp.tagext.Tag

EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE

Constructor Summary
`NotPresentTag()`

Method Summary
`protected boolean`	`condition()` Evaluate the condition that is being tested by this particular tag, and return `true` if the nested body content of this tag should be evaluated, or `false` if it should be skipped.

Methods inherited from class org.apache.struts.taglib.logic.PresentTag

condition, isBeanPresent, isCookiePresent

Methods inherited from class org.apache.struts.taglib.logic.ConditionalTagBase

doEndTag, doStartTag, getCookie, getHeader, getName, getParameter, getProperty, getRole, getScope, getUser, release, setCookie, setHeader, setName, setParameter, setProperty, setRole, setScope, setUser

Methods inherited from class javax.servlet.jsp.tagext.TagSupport

findAncestorWithClass, getId, getParent, getValue, getValues, removeValue, setId, setPageContext, setParent, setValue

Methods inherited from class java.lang.Object

, clone, equals, finalize, getClass, hashCode, notify, notifyAll, registerNatives, toString, wait, wait, wait

Constructor Detail

NotPresentTag

public NotPresentTag()

Method Detail

condition

protected boolean condition()
                     throws javax.servlet.jsp.JspException

Evaluate the condition that is being tested by this particular tag, and return true if the nested body content of this tag should be evaluated, or false if it should be skipped. This method must be implemented by concrete subclasses.

Overrides:: condition in class PresentTag

Throws:: javax.servlet.jsp.JspException - if a JSP exception occurs