com.jcorporate.expresso.ext.struts.taglib.logic
Class ExPresentTag

java.lang.Object
  javax.servlet.jsp.tagext.TagSupport
      org.apache.struts.taglib.logic.ConditionalTagBase
          org.apache.struts.taglib.logic.PresentTag
              com.jcorporate.expresso.ext.struts.taglib.logic.ExPresentTag

All Implemented Interfaces:

IterationTag, Serializable, Tag

Direct Known Subclasses:

ExNotPresentTag

public class ExPresentTag

extends org.apache.struts.taglib.logic.PresentTag

Evalute the nested body content of this tag if the specified value is present for this request.

THIS TAG ASSUMES A 'CONTROLLER CONTEXT' AND DOES NOT WORK IF CALLED IN A 'NAKED' JSP

Author:

Craig R. McClanahan

See Also:

Serialized Form

Field Summary

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

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

EVAL_BODY_AGAIN

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

EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE

Constructor Summary

ExPresentTag()

Method Summary

protected boolean

condition(boolean desired) 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

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

ExPresentTag

public ExPresentTag()

Method Detail

condition

protected boolean condition(boolean desired)
                     throws 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.

Parameters:

desired - Desired outcome for a true result

Returns:

integer as specified by the JSP Taglib spec

Throws:

JspException - if a JSP exception occurs