Class WhenTagSupport
- java.lang.Object
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- javax.servlet.jsp.tagext.TagSupport
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- javax.servlet.jsp.jstl.core.ConditionalTagSupport
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- org.apache.taglibs.standard.tag.common.core.WhenTagSupport
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- All Implemented Interfaces:
java.io.Serializable
,IterationTag
,JspTag
,Tag
- Direct Known Subclasses:
OtherwiseTag
,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>
- See Also:
- Serialized Form
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Field Summary
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Fields inherited from interface javax.servlet.jsp.tagext.IterationTag
EVAL_BODY_AGAIN
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Fields inherited from interface javax.servlet.jsp.tagext.Tag
EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE
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Constructor Summary
Constructors Constructor Description WhenTagSupport()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
doStartTag()
Includes its body if condition() evaluates to true.-
Methods inherited from class javax.servlet.jsp.jstl.core.ConditionalTagSupport
release, setScope, setVar
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Methods inherited from class javax.servlet.jsp.tagext.TagSupport
doAfterBody, doEndTag, findAncestorWithClass, getId, getParent, getValue, getValues, removeValue, setId, setPageContext, setParent, setValue
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Method Detail
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doStartTag
public int doStartTag() throws JspException
Description copied from class:ConditionalTagSupport
Includes its body if condition() evaluates to true.- Specified by:
doStartTag
in interfaceTag
- Overrides:
doStartTag
in classConditionalTagSupport
- Returns:
- SKIP_BODY
- Throws:
JspException
- if an error occurs while processing this tag- See Also:
Tag.doStartTag()
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