org.axonframework.queryhandling

Annotation Type QueryHandler

@Documented
 @Retention(value=RUNTIME)
 @Target(value={METHOD,ANNOTATION_TYPE})
 @MessageHandler(messageType=QueryMessage.class)
public @interface QueryHandler

Marker annotation to mark any method on an object as being a QueryHandler. Use the AnnotationQueryHandlerAdapter to subscribe the annotated class to the query bus.

The annotated method's first parameter is the query handled by that method. Optionally, the query handler may specify a second parameter of type MetaData. The active MetaData will be passed if that parameter is supplied.

Since:

3.1

Author:

Marc Gathier

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
String	queryName The name of the Query this handler listens to.

Element Detail

queryName

public abstract String queryName

The name of the Query this handler listens to. Defaults to the fully qualified class name of the payload type (i.e. first parameter).

Returns:

The query name

Default:

""