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package javax.ejb;

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

/**
 * Indicates a dependency on the local, no-interface, or remote view of an Enterprise
 * JavaBean.
 * 

* Either the beanName or the lookup element can * be used to resolve the EJB dependency to its target session bean component. * It is an error to specify values for both beanName and * lookup. *

* If no explicit linking information is provided and there is only one session * bean within the same application that exposes the matching client view type, * by default the EJB dependency resolves to that session bean. * * @since EJB 3.0 */ @Target({TYPE, METHOD, FIELD}) @Retention(RUNTIME) public @interface EJB { /** * The logical name of the ejb reference within the declaring component's * (e.g., java:comp/env) environment. */ String name() default ""; /** * A string describing the bean. */ String description() default ""; /** * The beanName element references the value of the name * element of the Stateful or Stateless annotation, * whether defaulted or explicit. If the deployment descriptor was used to define * the name of the bean, the beanName element references the * ejb-name element of the bean definition. *

* The beanName element allows disambiguation if multiple session * beans in the ejb-jar implement the same interface. *

* In order to reference a bean in another ejb-jar file in the same application, * the beanName may be composed of a path name specifying the ejb-jar * containing the referenced bean with the bean name of the target bean appended and * separated from the path name by #. The path name is relative to the jar file * containing the component that is referencing the target bean. *

* Only applicable if the target EJB is defined within the * same application or stand-alone module as the declaring component. */ String beanName() default ""; /** * The interface type of the Enterprise Java Bean to which this reference * is mapped. *

* Holds one of the following types of the target EJB : *

    *
  • Local business interface *
  • Bean class (for no-interface view) *
  • Remote business interface *
  • Local Home interface *
  • Remote Home interface *
*/ Class beanInterface() default Object.class; /** * The product specific name of the EJB component to which this * ejb reference should be mapped. This mapped name is often a * global JNDI name, but may be a name 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 ""; /** * A portable lookup string containing the JNDI name for the target EJB component. * * @since EJB 3.1 */ String lookup() default ""; }





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