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package javax.annotation;

import java.lang.annotation.*;
import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.*;

/**
 * The Resource annotation marks a resource that is needed
 * by the application.  This annotation may be applied to an
 * application component class, or to fields or methods of the
 * component class.  When the annotation is applied to a
 * field or method, the container will inject an instance
 * of the requested resource into the application component
 * when the component is initialized.  If the annotation is
 * applied to the component class, the annotation declares a
 * resource that the application will look up at runtime. 
 * 

* Even though this annotation is not marked Inherited, deployment * tools are required to examine all superclasses of any component * class to discover all uses of this annotation in all superclasses. * All such annotation instances specify resources that are needed * by the application component. Note that this annotation may * appear on private fields and methods of superclasses; the container * is required to perform injection in these cases as well.

* * @since 1.6, Common Annotations 1.0 */ @Target({TYPE, FIELD, METHOD}) @Retention(RUNTIME) @Repeatable(Resources.class) public @interface Resource { /** * The JNDI name of the resource. For field annotations, * the default is the field name. For method annotations, * the default is the JavaBeans property name corresponding * to the method. For class annotations, there is no default * and this must be specified. */ String name() default ""; /** * The name of the resource that the reference points to. It can * link to any compatible resource using the global JNDI names. * * @since 1.7, Common Annotations 1.1 */ String lookup() default ""; /** * The Java type of the resource. For field annotations, * the default is the type of the field. For method annotations, * the default is the type of the JavaBeans property. * For class annotations, there is no default and this must be * specified. */ Class type() default java.lang.Object.class; /** * The two possible authentication types for a resource. */ enum AuthenticationType { CONTAINER, APPLICATION } /** * The authentication type to use for this resource. * This may be specified for resources representing a * connection factory of any supported type, and must * not be specified for resources of other types. */ AuthenticationType authenticationType() default AuthenticationType.CONTAINER; /** * Indicates whether this resource can be shared between * this component and other components. * This may be specified for resources representing a * connection factory of any supported type, and must * not be specified for resources of other types. */ boolean shareable() default true; /** * A product-specific name that this resource should be mapped to. * The mappedName element provides for mapping the * resource reference to the name of a resource known to the * applicaiton server. The mapped name could be of any form. *

Application servers are not required to support any particular * form or type of mapped name, nor the ability to use mapped names. * The mapped name is product-dependent and often installation-dependent. * No use of a mapped name is portable.

*/ String mappedName() default ""; /** * Description of this resource. The description is expected * to be in the default language of the system on which the * application is deployed. The description can be presented * to the Deployer to help in choosing the correct resource. */ String description() default ""; }




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