Class ChooseTag
- java.lang.Object
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- javax.servlet.jsp.tagext.TagSupport
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- org.apache.taglibs.standard.tag.common.core.ChooseTag
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- All Implemented Interfaces:
java.io.Serializable
,javax.servlet.jsp.tagext.IterationTag
,javax.servlet.jsp.tagext.JspTag
,javax.servlet.jsp.tagext.Tag
public class ChooseTag extends javax.servlet.jsp.tagext.TagSupport
Tag handler for <choose> in JSTL.
<choose> is a very simple tag that acts primarily as a container; it always includes its body and allows exactly one of its child <when> tags to run. Since this tag handler doesn't have any attributes, it is common.core to both the rtexprvalue and expression- evaluating versions of the JSTL library.
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description private boolean
subtagGateClosed
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Constructor Summary
Constructors Constructor Description ChooseTag()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
doStartTag()
boolean
gainPermission()
Returns status indicating whether a subtag should run or not.private void
init()
void
release()
void
subtagSucceeded()
Called by a subtag to indicate that it plans to evaluate its body.
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Method Detail
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release
public void release()
- Specified by:
release
in interfacejavax.servlet.jsp.tagext.Tag
- Overrides:
release
in classjavax.servlet.jsp.tagext.TagSupport
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gainPermission
public boolean gainPermission()
Returns status indicating whether a subtag should run or not.- Returns:
- true if the subtag should evaluate its condition and decide whether to run, false otherwise.
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subtagSucceeded
public void subtagSucceeded()
Called by a subtag to indicate that it plans to evaluate its body.
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doStartTag
public int doStartTag() throws javax.servlet.jsp.JspException
- Specified by:
doStartTag
in interfacejavax.servlet.jsp.tagext.Tag
- Overrides:
doStartTag
in classjavax.servlet.jsp.tagext.TagSupport
- Throws:
javax.servlet.jsp.JspException
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init
private void init()
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