org.apache.polygene.api.service.qualifier

Annotation Type HasMetaInfo

@Retention(value=RUNTIME)
 @Documented
public @interface HasMetaInfo

Filter services based on Meta Info being declared on the Service.

Meta Info of any type can be set on the service during assembly, e.g.;

 module.addService( MyService.class ).setMetaInfo( new MyCustomInfo(someData) );
 

and then at an injection point you can do this:

 @Service @HasMetaInfo(MyCustomInfo.class) MyService service;
 

to get only a service that has a MyCustomInfo instance set as meta info.

Required Element Summary

Required Elements

Modifier and Type	Required Element and Description
Class[]	value The Class(es) needed to have been defined in the Service meta info for a qualifier to evaluate true.

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
boolean	anded True if the Classes defined in the value() field should be AND'ed instead of OR'ed.

Element Detail

value

public abstract Class[] value

The Class(es) needed to have been defined in the Service meta info for a qualifier to evaluate true.

Returns:

One or more classes that should be defined in the service's meta info for the service to be considered qualified. If more than one class is defined, the anded() parameter will define if they must be AND'ed or OR'ed together.

anded

public abstract boolean anded

True if the Classes defined in the value() field should be AND'ed instead of OR'ed.

Returns:

If true, all the Class types defined in value() must be defined for the service for it to be qualified. If false, if any of the Class types defined in value() is defined for the service the service is qualified.

Default:

false