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Java 2 Platform EE v1.3: Interface Topic
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javax.jms</FONT>
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Interface Topic</H2>
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<DT><B>All Superinterfaces:</B> <DD><A HREF="../../javax/jms/Destination.html">Destination</A></DD>
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<DT><B>All Known Subinterfaces:</B> <DD><A HREF="../../javax/jms/TemporaryTopic.html">TemporaryTopic</A></DD>
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<DT>public interface <B>Topic</B><DT>extends <A HREF="../../javax/jms/Destination.html">Destination</A></DL>
<P>
A <CODE>Topic</CODE> object encapsulates a provider-specific topic name.
It is the way a client specifies the identity of a topic to JMS API methods.
<P>Many publish/subscribe (pub/sub) providers group topics into hierarchies
and provide various options for subscribing to parts of the hierarchy. The
JMS API places no restriction on what a <CODE>Topic</CODE> object
represents. It may be a leaf in a topic hierarchy, or it may be a larger
part of the hierarchy.
<P>The organization of topics and the granularity of subscriptions to
them is an important part of a pub/sub application's architecture. The JMS
API
does not specify a policy for how this should be done. If an application
takes advantage of a provider-specific topic-grouping mechanism, it
should document this. If the application is installed using a different
provider, it is the job of the administrator to construct an equivalent
topic architecture and create equivalent <CODE>Topic</CODE> objects.
<P>
<DL>
<DT><B>See Also: </B><DD><A HREF="../../javax/jms/TopicSession.html#createTopic(java.lang.String)"><CODE>TopicSession.createTopic(String)</CODE></A></DL>
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<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/jms/Topic.html#getTopicName()">getTopicName</A></B>()</CODE>
<BR>
Gets the name of this topic.</TD>
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<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/jms/Topic.html#toString()">toString</A></B>()</CODE>
<BR>
Returns a string representation of this object.</TD>
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<A NAME="getTopicName()"><!-- --></A><H3>
getTopicName</H3>
<PRE>
public java.lang.String <B>getTopicName</B>()
throws <A HREF="../../javax/jms/JMSException.html">JMSException</A></PRE>
<DL>
<DD>Gets the name of this topic.
<P>Clients that depend upon the name are not portable.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the topic name<DT><B>Throws:</B><DD><CODE><A HREF="../../javax/jms/JMSException.html">JMSException</A></CODE> - if the JMS provider implementation of
<CODE>Topic</CODE> fails to return the topic
name due to some internal
error.</DL>
</DD>
</DL>
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<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>()</PRE>
<DL>
<DD>Returns a string representation of this object.<DD><DL>
<DT><B>Overrides:</B><DD><CODE>toString</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the provider-specific identity values for this topic</DL>
</DD>
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