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

Class IfTag

java.lang.Object

jakarta.servlet.jsp.tagext.TagSupport

jakarta.servlet.jsp.jstl.core.ConditionalTagSupport

org.apache.taglibs.standard.tag.el.core.IfTag

All Implemented Interfaces:

IterationTag, JspTag, Tag, Serializable

public class IfTag
extends ConditionalTagSupport

Tag handler for <if> in JSTL's expression-evaluating library. Because of the support provided by the ConditionalTagSupport class, thistag is trivial enough not to require a separate base supporting class common to both libraries.

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
IfTag()

Method Summary

Modifier and Type	Method	Description
protected boolean	condition()	Subclasses implement this method to compute the boolean result of the conditional action.
void	release()	Releases any resources this ConditionalTagSupport may have (or inherit).
void	setTest(String test)

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

doStartTag, 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

IfTag

public IfTag()

Method Details

release

public void release()

Description copied from class: ConditionalTagSupport

Releases any resources this ConditionalTagSupport may have (or inherit).

Specified by:

release in interface Tag

Overrides:

release in class ConditionalTagSupport

See Also:

• Tag.release()

condition

protected boolean condition()
                     throws JspTagException

Description copied from class: ConditionalTagSupport

Subclasses implement this method to compute the boolean result of the conditional action. This method is invoked once per tag invocation by doStartTag().

Specified by:

condition in class ConditionalTagSupport

Returns:

a boolean representing the condition that a particular subclass uses to drive its conditional logic.

Throws:

JspTagException - on failure

setTest

public void setTest(String test)