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Java 2 Platform EE v1.3: Interface ConnectionFactory
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javax.jms</FONT>
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Interface ConnectionFactory</H2>
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<DT><B>All Known Subinterfaces:</B> <DD><A HREF="../../javax/jms/QueueConnectionFactory.html">QueueConnectionFactory</A>, <A HREF="../../javax/jms/TopicConnectionFactory.html">TopicConnectionFactory</A>, <A HREF="../../javax/jms/XAQueueConnectionFactory.html">XAQueueConnectionFactory</A>, <A HREF="../../javax/jms/XATopicConnectionFactory.html">XATopicConnectionFactory</A></DD>
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<DT>public interface <B>ConnectionFactory</B></DL>
<P>
A <CODE>ConnectionFactory</CODE> object encapsulates a set of connection
configuration
parameters that has been defined by an administrator. A client uses
it to create a connection with a JMS provider.
<P><CODE>ConnectionFactory</CODE> objects support concurrent use.
<P>A <CODE>ConnectionFactory</CODE> object is a JMS administered object.
<P>JMS administered objects are objects containing configuration
information that are created by an administrator and later used by
JMS clients. They make it practical to administer the JMS API in the
enterprise.
<P>Although the interfaces for administered objects do not explicitly
depend on the Java Naming and Directory Interface (JNDI) API, the JMS API
establishes the convention that JMS clients find administered objects by
looking them up in a JNDI namespace.
<P>An administrator can place an administered object anywhere in a
namespace. The JMS API does not define a naming policy.
<P>It is expected that JMS providers will provide the tools an
administrator needs to create and configure administered objects in a
JNDI namespace. JMS provider implementations of administered objects
should be both <CODE>javax.jndi.Referenceable</CODE> and
<CODE>java.io.Serializable</CODE> so that they can be stored in all
JNDI naming contexts. In addition, it is recommended that these
implementations follow the JavaBeans<SUP><FONT SIZE="-2">TM</FONT></SUP>
design patterns.
<P>This strategy provides several benefits:
<UL>
<LI>It hides provider-specific details from JMS clients.
<LI>It abstracts administrative information into objects in the Java
programming language ("Java objects")
that are easily organized and administered from a common
management console.
<LI>Since there will be JNDI providers for all popular naming
services, this means that JMS providers can deliver one implementation
of administered objects that will run everywhere.
</UL>
<P>An administered object should not hold on to any remote resources.
Its lookup should not use remote resources other than those used by the
JNDI API itself.
<P>Clients should think of administered objects as local Java objects.
Looking them up should not have any hidden side effects or use surprising
amounts of local resources.
<P>
<DL>
<DT><B>See Also: </B><DD><A HREF="../../javax/jms/QueueConnectionFactory.html"><CODE>QueueConnectionFactory</CODE></A>,
<A HREF="../../javax/jms/TopicConnectionFactory.html"><CODE>TopicConnectionFactory</CODE></A></DL>
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