net.ontopia.topicmaps.nav2.taglibs.tolog
Class IfTag
java.lang.Object
javax.servlet.jsp.tagext.TagSupport
javax.servlet.jsp.tagext.BodyTagSupport
net.ontopia.topicmaps.nav2.taglibs.tolog.QueryExecutingTag
net.ontopia.topicmaps.nav2.taglibs.tolog.IfTag
- All Implemented Interfaces:
- Serializable, javax.servlet.jsp.tagext.BodyTag, javax.servlet.jsp.tagext.IterationTag, javax.servlet.jsp.tagext.JspTag, javax.servlet.jsp.tagext.Tag
- Direct Known Subclasses:
- WhenTag
public class IfTag
- extends QueryExecutingTag
INTERNAL: Tolog Tag for testing if a variable is bound and non-null
or if a query gives a non-empty result. If the variable is bound
and non-null, then the body is evaluated once. If the query-result
is non-empty, binds the query variables to the first row and
evaluates the body once.
- See Also:
- Serialized Form
Fields inherited from class javax.servlet.jsp.tagext.BodyTagSupport |
bodyContent |
Fields inherited from class javax.servlet.jsp.tagext.TagSupport |
id, pageContext |
Fields inherited from interface javax.servlet.jsp.tagext.BodyTag |
EVAL_BODY_BUFFERED, EVAL_BODY_TAG |
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 |
IfTag()
Default constructor. |
Methods inherited from class javax.servlet.jsp.tagext.BodyTagSupport |
doInitBody, getBodyContent, getPreviousOut, setBodyContent |
Methods inherited from class javax.servlet.jsp.tagext.TagSupport |
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 |
Methods inherited from interface javax.servlet.jsp.tagext.Tag |
getParent, setPageContext, setParent |
var
protected String var
IfTag
public IfTag()
- Default constructor.
doStartTag
public int doStartTag()
throws javax.servlet.jsp.JspTagException
- Process the start tag for this instance.
- Specified by:
doStartTag
in interface javax.servlet.jsp.tagext.Tag
- Overrides:
doStartTag
in class QueryExecutingTag
- Throws:
javax.servlet.jsp.JspTagException
doEndTag
public int doEndTag()
throws javax.servlet.jsp.JspException
- Process the end tag.
- Specified by:
doEndTag
in interface javax.servlet.jsp.tagext.Tag
- Overrides:
doEndTag
in class QueryExecutingTag
- Throws:
javax.servlet.jsp.JspException
release
public void release()
- Resets the state of the Tag.
- Specified by:
release
in interface javax.servlet.jsp.tagext.Tag
- Overrides:
release
in class QueryExecutingTag
setVar
public void setVar(String var)
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