EaglerForge/sources/main/java/javax/annotation/Resource.java

145 lines
5.8 KiB
Java

/*
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*
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*
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* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
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* obtain a copy of the License at
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* or LICENSE.txt. See the License for the specific
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*
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* file and include the License file at LICENSE.txt.
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package javax.annotation;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.annotation.Repeatable;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
/**
* The <code>Resource</code> 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.
* <p>
* Even though this annotation is not marked <code>Inherited</code>, 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.
* </p>
*
* @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
* <code>mappedName</code> 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.
* <p>
* 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.
* </p>
*/
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 "";
}