MessageEndpointFactory (Java EE 5)

This serves as a factory for creating message endpoints.

Version:

1.0

Author:

Ram Jeyaraman

public MessageEndpoint createEndpoint(XAResource xaResource) throws UnavailableException
此方法用于创建消息端点。消息端点应该实现正确的消息侦听器类型。

xaResource	当消息传送是事务性时，用来获取事务处理通知的可选 XAResource 实例。
return	消息端点实例。
Throws	UnavailableException: 指示创建消息端点时出现暂时故障。后续尝试创建消息端点可能成功。

英文文档：

createEndpoint

MessageEndpoint createEndpoint(XAResource xaResource)
                               throws UnavailableException

This is used to create a message endpoint. The message endpoint is expected to implement the correct message listener type.

Parameters:

xaResource - an optional XAResource instance used to get transaction notifications when the message delivery is transacted.

Returns:

a message endpoint instance.

Throws:

UnavailableException - indicates a transient failure in creating a message endpoint. Subsequent attempts to create a message endpoint might succeed.

public boolean isDeliveryTransacted(Method method) throws NoSuchMethodException
此方法用于确定，传送到目标方法（位于消息端点实现的消息侦听器接口上）的消息是否将是事务性的。 该消息端点可以通过其部署描述符指出其事务性传送首选项（每个方法级别）。在消息端点的生命周期内不得更改消息传送首选项。

method	目标方法的描述。此信息与预期目标方法有关，它使应用服务器能够确定目标方法调用是否将是事务性的。
Throws	NoSuchMethodException: 指示目标端点上不存在指定的方法。
return	如果消息端点需要事务性消息传送，则返回 true。

英文文档：

isDeliveryTransacted

boolean isDeliveryTransacted(Method method)
                             throws NoSuchMethodException

This is used to find out whether message deliveries to a target method on a message listener interface that is implemented by a message endpoint will be transacted or not. The message endpoint may indicate its transacted delivery preferences (at a per method level) through its deployment descriptor. The message delivery preferences must not change during the lifetime of a message endpoint.

Parameters:

method - description of a target method. This information about the intended target method allows an application server to find out whether the target method call will be transacted or not.

Returns:

true, if message endpoint requires transacted message delivery.

Throws:

NoSuchMethodException - indicates that the specified method does not exist on the target endpoint.

Copyright 2007 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.