Package org.apache.taglibs.standard.tag.common.core

Class WhenTagSupport

java.lang.Object

jakarta.servlet.jsp.tagext.TagSupport

jakarta.servlet.jsp.jstl.core.ConditionalTagSupport

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

All Implemented Interfaces:

IterationTag, JspTag, Tag, Serializable

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 jakarta.servlet.jsp.tagext.TagSupport

id, pageContext

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

EVAL_BODY_AGAIN

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

EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE

Constructor Summary

Constructors

Constructor	Description
WhenTagSupport()

Method Summary

Modifier and Type	Method	Description
int	doStartTag()	Includes its body if condition() evaluates to true.

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

condition, release, setScope, setVar

Methods inherited from class jakarta.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 Details

WhenTagSupport

public WhenTagSupport()

Method Details

doStartTag

public int doStartTag()
               throws JspException

Description copied from class: ConditionalTagSupport

Includes its body if condition() evaluates to true.

Specified by:

doStartTag in interface Tag

Overrides:

doStartTag in class ConditionalTagSupport

Returns:

SKIP_BODY

Throws:

JspException - if an error occurs while processing this tag

See Also:

• Tag.doStartTag()