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/* $Id: PersistenceContext.java 11282 2007-03-14 22:05:59Z epbernard $
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 * JBoss Inc
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 *
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 * Distributable under LGPL license.
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 * See terms of license at gnu.org.
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 */
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package javax.persistence;
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import java.lang.annotation.ElementType;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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import java.lang.annotation.Target;
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/**
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 * Expresses a dependency on an EntityManager persistence context.
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 *
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 * @author <a href="mailto:bill@jboss.org">Bill Burke</a>
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 */
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@Target({ElementType.TYPE, ElementType.METHOD, ElementType.FIELD})
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@Retention(RetentionPolicy.RUNTIME)
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public @interface PersistenceContext {
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        /**
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         * The name by which the entity manager is to be accessed in the environment referencing context,
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         * and is not needed when dependency injection is used.
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         */
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        String name() default "";
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        /**
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         * The name of the persistence unit. If the unitName element is specified, the persistence unit
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         * for the entity manager that is accessible in JNDI must have the same name.
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         */
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        String unitName() default "";
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        /**
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         * Used to specify properties for the container or persistence provider. Vendor specific
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         * properties may be included in this set of properties. Properties that are not
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         * recognized by a vendor are ignored.
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         */
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        PersistenceProperty[] properties() default {};
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        /**
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         * Specifies whether this is a transaction-scoped persistence context or
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         * an extended persistence context.
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         */
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        PersistenceContextType type() default PersistenceContextType.TRANSACTION;
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}