tagdata.html
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Java 2 Platform EE v1.3: Class TagData
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javax.servlet.jsp.tagext</FONT>
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Class TagData</H2>
<PRE>
java.lang.Object
|
+--<B>javax.servlet.jsp.tagext.TagData</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD>java.lang.Cloneable</DD>
</DL>
<HR>
<DL>
<DT>public class <B>TagData</B><DT>extends java.lang.Object<DT>implements java.lang.Cloneable</DL>
<P>
The (translation-time only) attribute/value information for a tag instance.
<p>
TagData is only used as an argument to the isValid and getVariableInfo
methods of TagExtraInfo, which are invoked at translation time.
<P>
<HR>
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<CODE>static java.lang.Object</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../javax/servlet/jsp/tagext/TagData.html#REQUEST_TIME_VALUE">REQUEST_TIME_VALUE</A></B></CODE>
<BR>
Distinguished value for an attribute to indicate its value
is a request-time expression (which is not yet available because
TagData instances are used at translation-time).</TD>
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<TD><CODE><B><A HREF="../../../../javax/servlet/jsp/tagext/TagData.html#TagData(java.util.Hashtable)">TagData</A></B>(java.util.Hashtable attrs)</CODE>
<BR>
Constructor for a TagData.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../javax/servlet/jsp/tagext/TagData.html#TagData(java.lang.Object[][])">TagData</A></B>(java.lang.Object[][] atts)</CODE>
<BR>
Constructor for TagData.</TD>
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<CODE> java.lang.Object</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../javax/servlet/jsp/tagext/TagData.html#getAttribute(java.lang.String)">getAttribute</A></B>(java.lang.String attName)</CODE>
<BR>
The value of the attribute.</TD>
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<CODE> java.util.Enumeration</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../javax/servlet/jsp/tagext/TagData.html#getAttributes()">getAttributes</A></B>()</CODE>
<BR>
Enumerates the attributes.</TD>
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<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../javax/servlet/jsp/tagext/TagData.html#getAttributeString(java.lang.String)">getAttributeString</A></B>(java.lang.String attName)</CODE>
<BR>
Get the value for a given attribute.</TD>
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<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../javax/servlet/jsp/tagext/TagData.html#getId()">getId</A></B>()</CODE>
<BR>
The value of the id attribute, if available.</TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../javax/servlet/jsp/tagext/TagData.html#setAttribute(java.lang.String, java.lang.Object)">setAttribute</A></B>(java.lang.String attName,
java.lang.Object value)</CODE>
<BR>
Set the value of an attribute.</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="REQUEST_TIME_VALUE"><!-- --></A><H3>
REQUEST_TIME_VALUE</H3>
<PRE>
public static final java.lang.Object <B>REQUEST_TIME_VALUE</B></PRE>
<DL>
<DD>Distinguished value for an attribute to indicate its value
is a request-time expression (which is not yet available because
TagData instances are used at translation-time).</DL>
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<A NAME="TagData(java.lang.Object[][])"><!-- --></A><H3>
TagData</H3>
<PRE>
public <B>TagData</B>(java.lang.Object[][] atts)</PRE>
<DL>
<DD>Constructor for TagData.
<p>
A typical constructor may be
<pre>
static final Object[][] att = {{"connection", "conn0"}, {"id", "query0"}};
static final TagData td = new TagData(att);
</pre>
All values must be Strings except for those holding the
distinguished object REQUEST_TIME_VALUE.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>atts</CODE> - the static attribute and values. May be null.</DL>
</DD>
</DL>
<HR>
<A NAME="TagData(java.util.Hashtable)"><!-- --></A><H3>
TagData</H3>
<PRE>
public <B>TagData</B>(java.util.Hashtable attrs)</PRE>
<DL>
<DD>Constructor for a TagData.
If you already have the attributes in a hashtable, use this
constructor.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>attrs</CODE> - A hashtable to get the values from.</DL>
</DD>
</DL>
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<A NAME="getId()"><!-- --></A><H3>
getId</H3>
<PRE>
public java.lang.String <B>getId</B>()</PRE>
<DL>
<DD>The value of the id attribute, if available.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the value of the id attribute or null</DL>
</DD>
</DL>
<HR>
<A NAME="getAttribute(java.lang.String)"><!-- --></A><H3>
getAttribute</H3>
<PRE>
public java.lang.Object <B>getAttribute</B>(java.lang.String attName)</PRE>
<DL>
<DD>The value of the attribute.
Returns the distinguished object REQUEST_TIME_VALUE if
the value is request time. Returns null if the attribute is not set.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the attribute's value object</DL>
</DD>
</DL>
<HR>
<A NAME="setAttribute(java.lang.String, java.lang.Object)"><!-- --></A><H3>
setAttribute</H3>
<PRE>
public void <B>setAttribute</B>(java.lang.String attName,
java.lang.Object value)</PRE>
<DL>
<DD>Set the value of an attribute.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>attName</CODE> - the name of the attribute<DD><CODE>value</CODE> - the value.</DL>
</DD>
</DL>
<HR>
<A NAME="getAttributeString(java.lang.String)"><!-- --></A><H3>
getAttributeString</H3>
<PRE>
public java.lang.String <B>getAttributeString</B>(java.lang.String attName)</PRE>
<DL>
<DD>Get the value for a given attribute.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the attribute value string</DL>
</DD>
</DL>
<HR>
<A NAME="getAttributes()"><!-- --></A><H3>
getAttributes</H3>
<PRE>
public java.util.Enumeration <B>getAttributes</B>()</PRE>
<DL>
<DD>Enumerates the attributes.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>An enumeration of the attributes in a TagData</DL>
</DD>
</DL>
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