org.apache.taglibs.standard.tag.common.core
Class WhenTagSupport

java.lang.Object
  javax.servlet.jsp.tagext.TagSupport
      javax.servlet.jsp.jstl.core.ConditionalTagSupport
          org.apache.taglibs.standard.tag.common.core.WhenTagSupport

All Implemented Interfaces:

Serializable, javax.servlet.jsp.tagext.IterationTag, javax.servlet.jsp.tagext.JspTag, javax.servlet.jsp.tagext.Tag

Direct Known Subclasses:

OtherwiseTag, WhenTag, WhenTag, WhenTag

public abstract class WhenTagSupport
extends ConditionalTagSupport

WhenTagSupport is an abstract class that facilitates implementation of <when>-style tags in both the rtexprvalue and expression-evaluating libraries. It also supports <otherwise>.

In particular, this base class does the following:

• overrides ConditionalTagSupport.doStartTag() to implement the appropriate semantics of subtags of <choose>

Author:

Shawn Bayern

See Also:

Serialized Form

Field Summary

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

WhenTagSupport()

Method Summary

int	doStartTag() Includes its body if condition() evaluates to true.

Methods inherited from class javax.servlet.jsp.jstl.core.ConditionalTagSupport

condition, release, setScope, setVar

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

doAfterBody, doEndTag, 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

WhenTagSupport

public WhenTagSupport()

Method Detail

doStartTag

public int doStartTag()
               throws javax.servlet.jsp.JspException

Description copied from class: ConditionalTagSupport

Includes its body if condition() evaluates to true.

Specified by:

doStartTag in interface javax.servlet.jsp.tagext.Tag

Overrides:

doStartTag in class ConditionalTagSupport

Throws:

javax.servlet.jsp.JspException