Package org.osgi.annotation.bundle

Annotation Type Attribute

@Documented @Retention(CLASS) @Target(METHOD) public @interface Attribute
Mark an annotation element as an attribute.

This is used when applying Capability or Requirement as a meta annotation to an annotation declaration. The value of the annotation element annotated with Attribute is used as the value of an attribute in the generated capability or requirement clause. For example: 

 @Capability(namespace = "my.namespace")
 public @interface MyCapability {
   @Attribute("attr")
   String value() default "";
 }
 
 @MyCapability("foo")
 public MyClass {}
The use of the MyCapability annotation, which is meta annotated with the Capability and Attribute annotations, will result in a capability in the namespace my.namespace with the attribute attr=foo.

If the element annotated with Attribute is unspecified when applied, then the attribute must not be generated in the generated capability or requirement clause. For example: 

 @MyCapability
 public MyClass {}
will not have the attr attribute in the generated capability.

This annotation is not retained at runtime. It is for use by tools to generate bundle manifests.

  • Optional Element Summary

    Optional Elements
    Modifier and Type
    Optional Element
    Description
    String
    value
    The name of the attribute.

  • Element Details

    • value

      String value
      The name of the attribute.

      If not specified, the name of the annotated element is used as the name of the attribute.

      Default:
      ""