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Java 2 Platform EE v1.3: Class TagExtraInfo
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javax.servlet.jsp.tagext</FONT>
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Class TagExtraInfo</H2>
<PRE>
java.lang.Object
|
+--<B>javax.servlet.jsp.tagext.TagExtraInfo</B>
</PRE>
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<DL>
<DT>public abstract class <B>TagExtraInfo</B><DT>extends java.lang.Object</DL>
<P>
Optional class provided by the tag library author to describe additional
translation-time information not described in the TLD.
The TagExtraInfo class is mentioned in the Tag Library Descriptor file (TLD).
<p>
This class can be used:
<ul>
<li> to indicate that the tag defines scripting variables
<li> to perform translation-time validation of the tag attributes.
</ul>
<p>
It is the responsibility of the JSP translator that the initial value
to be returned by calls to getTagInfo() corresponds to a TagInfo
object for the tag being translated. If an explicit call to
setTagInfo() is done, then the object passed will be returned in
subsequent calls to getTagInfo().
<p>
The only way to affect the value returned by getTagInfo()
is through a setTagInfo() call, and thus, TagExtraInfo.setTagInfo() is
to be called by the JSP translator, with a TagInfo object that
corresponds to the tag being translated. The call should happen before
any invocation on isValid() and before any invocation on
getVariableInfo().
<P>
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<TD><CODE><B><A HREF="../../../../javax/servlet/jsp/tagext/TagExtraInfo.html#TagExtraInfo()">TagExtraInfo</A></B>()</CODE>
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<CODE> <A HREF="../../../../javax/servlet/jsp/tagext/TagInfo.html">TagInfo</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../javax/servlet/jsp/tagext/TagExtraInfo.html#getTagInfo()">getTagInfo</A></B>()</CODE>
<BR>
Get the TagInfo for this class.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../javax/servlet/jsp/tagext/VariableInfo.html">VariableInfo</A>[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../javax/servlet/jsp/tagext/TagExtraInfo.html#getVariableInfo(javax.servlet.jsp.tagext.TagData)">getVariableInfo</A></B>(<A HREF="../../../../javax/servlet/jsp/tagext/TagData.html">TagData</A> data)</CODE>
<BR>
information on scripting variables defined by the tag associated with
this TagExtraInfo instance.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../javax/servlet/jsp/tagext/TagExtraInfo.html#isValid(javax.servlet.jsp.tagext.TagData)">isValid</A></B>(<A HREF="../../../../javax/servlet/jsp/tagext/TagData.html">TagData</A> data)</CODE>
<BR>
Translation-time validation of the attributes.</TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../javax/servlet/jsp/tagext/TagExtraInfo.html#setTagInfo(javax.servlet.jsp.tagext.TagInfo)">setTagInfo</A></B>(<A HREF="../../../../javax/servlet/jsp/tagext/TagInfo.html">TagInfo</A> tagInfo)</CODE>
<BR>
Set the TagInfo for this class.</TD>
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<TD><B>Methods inherited from class java.lang.Object</B></TD>
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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<A NAME="TagExtraInfo()"><!-- --></A><H3>
TagExtraInfo</H3>
<PRE>
public <B>TagExtraInfo</B>()</PRE>
<DL>
</DL>
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<A NAME="getVariableInfo(javax.servlet.jsp.tagext.TagData)"><!-- --></A><H3>
getVariableInfo</H3>
<PRE>
public <A HREF="../../../../javax/servlet/jsp/tagext/VariableInfo.html">VariableInfo</A>[] <B>getVariableInfo</B>(<A HREF="../../../../javax/servlet/jsp/tagext/TagData.html">TagData</A> data)</PRE>
<DL>
<DD>information on scripting variables defined by the tag associated with
this TagExtraInfo instance.
Request-time attributes are indicated as such in the TagData parameter.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - The TagData instance.<DT><B>Returns:</B><DD>An array of VariableInfo data.</DL>
</DD>
</DL>
<HR>
<A NAME="isValid(javax.servlet.jsp.tagext.TagData)"><!-- --></A><H3>
isValid</H3>
<PRE>
public boolean <B>isValid</B>(<A HREF="../../../../javax/servlet/jsp/tagext/TagData.html">TagData</A> data)</PRE>
<DL>
<DD>Translation-time validation of the attributes.
Request-time attributes are indicated as such in the TagData parameter.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - The TagData instance.<DT><B>Returns:</B><DD>Whether this tag instance is valid.</DL>
</DD>
</DL>
<HR>
<A NAME="setTagInfo(javax.servlet.jsp.tagext.TagInfo)"><!-- --></A><H3>
setTagInfo</H3>
<PRE>
public final void <B>setTagInfo</B>(<A HREF="../../../../javax/servlet/jsp/tagext/TagInfo.html">TagInfo</A> tagInfo)</PRE>
<DL>
<DD>Set the TagInfo for this class.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>tagInfo</CODE> - The TagInfo this instance is extending</DL>
</DD>
</DL>
<HR>
<A NAME="getTagInfo()"><!-- --></A><H3>
getTagInfo</H3>
<PRE>
public final <A HREF="../../../../javax/servlet/jsp/tagext/TagInfo.html">TagInfo</A> <B>getTagInfo</B>()</PRE>
<DL>
<DD>Get the TagInfo for this class.<DD><DL>
<DT><B>Returns:</B><DD>the taginfo instance this instance is extending</DL>
</DD>
</DL>
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