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Begin (JBoss Seam API Documentation) - JBoss Seam 1.2.0 API 英文版文档

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org.jboss.seam.annotations
Annotation Type Begin

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@Target(value=METHOD)
@Retention(value=RUNTIME)
@Documented
public @interface Begin

Marks a method as beginning a long-running conversation, if none exists, and if the method returns a non-null value without throwing an exception. If a list of outcomes is specified, the conversation begins only if the outcome is in the list. A null outcome never begins a conversation. If the method is of type void, a conversation always begins.

Author:

Gavin King

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Optional Element Summary
FlushModeType	flushMode           Set the FlushMode for any EntityManager used in this conversation.
String	id           An EL expression for the conversation id.
String[]	ifOutcome           An empty outcome list is interpreted to mean any outcome except for the null (redisplay) outcome.
boolean	join           If false (the default), invocation of the begin method in the scope of an existing conversation will cause an exception to be thrown.
boolean	nested           If enabled, and if a conversation is already active, begin a nested conversation, instead of continuing in the context of the existing conversation.
String	pageflow           The name of the jBPM process definition defining the page flow for this conversation.

 

ifOutcome

public abstract String[] ifOutcome

An empty outcome list is interpreted to mean any outcome except for the null (redisplay) outcome.

Default:

{}

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nested

public abstract boolean nested

If enabled, and if a conversation is already active, begin a nested conversation, instead of continuing in the context of the existing conversation.

Default:

false

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join

public abstract boolean join

If false (the default), invocation of the begin method in the scope of an existing conversation will cause an exception to be thrown.

Default:

false

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pageflow

public abstract String pageflow

The name of the jBPM process definition defining the page flow for this conversation.

Default:

""

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id

public abstract String id

An EL expression for the conversation id. If a conversation with the same id aready exists, Seam will redirect to that conversation.

Default:

""

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flushMode

public abstract FlushModeType flushMode

Set the FlushMode for any EntityManager used in this conversation.

Default:

AUTO

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