com.gwtplatform.dispatch.annotation

Annotation Type Optional

@Target(value=FIELD)
@Retention(value=RUNTIME)
@Inherited
public @interface Optional

Use the @Optional annotation to specify optional fields.

If one or more fields are declared optional, the system generates an additional pair of constructor and fire method that can be called without these fields.

The omitted fields are not initialized and will contain their default value (i.e. objects will be initialized to null).

You can use this annotation with:

• @GenEvent
• @GenDto
• @GenDispatch

See the above annotations for specific behaviors with optional fields.