ProviderConnectionFactory javax.xml.messaging

JAXM 1.1; JWSDP 1.0
 public abstract class ProviderConnectionFactory {  // Public Constructors  public ProviderConnectionFactory(  );  // Public Class Methods  public static ProviderConnectionFactory newInstance( ) throws JAXMException;  // Public Instance Methods  public abstract ProviderConnection createConnection( ) throws JAXMException;  } 

ProviderConnectionFactory is an abstract class that can be used to create ProviderConnection objects for the purpose of obtaining a connection to a JAXM provider. In a container-based environment, a JAXM client uses a JNDI lookup to obtain a preconfigured ProviderConnectionFactory that results in the message that it subsequently created being sent to a JAXM provider chosen by an administrator.

An alternative way to obtain an instance of this class is to call the static newInstance( ) method. This method locates a concrete implementation of ProviderConnectionFactory as follows , stopping when a suitable class is found:

  1. Looks in the system properties for a property called javax.xml.messaging.ProviderConnectionFactory . If this property is defined, its value is assumed to be the class name of a concrete implementation of ProviderConnectionFactory .

  2. Looks for the same property in a file called ${JAVA_HOME}/lib/ . If the property is found, its value is assumed to be the required class name.

  3. Looks for a resource called META-INF/services/javax.xml.messaging.ProviderConnectionFactory in the classpath. If such a resource exists, it is opened and a single line is read from it. If the line is not empty, it is used as the required class name.

  4. Finally, an implementation-dependent default class is used. In the case of the reference implementation, this class is called com.sun.xml.messaging.jaxm.client.remote.ProviderConnectionFactoryImpl .

The createConnection( ) method returns a ProviderConnection object that allows a client to communicate with a JAXM provider. The means by which the provider is located is implementation-dependent. In the case of the reference implementation, the provider's address is configured in a file called client.xml , which must be accessible as a resource in the classpath of the client. For a description of the content of this file, refer to Chapter 4.

Returned By

ProviderConnectionFactory.newInstance( )


Java Web Services in a Nutshell
Java Web Services in a Nutshell
ISBN: 0596003994
EAN: 2147483647
Year: 2003
Pages: 257
Authors: Kim Topley
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