https://github.com/javaee/jpa-spec: Java(TM) Persistence API 
Copyright (c) 2008 - 2013 Oracle Corporation. All rights reserved.
This program and the accompanying materials are made available under the
terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
which accompanies this distribution.
The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
and the Eclipse Distribution License is available at
http://www.eclipse.org/org/documents/edl-v10.php.
Contributors:
    Linda DeMichiel - Java Persistence 2.1
    Linda DeMichiel - Java Persistence 2.0

/*******************************************************************************
 * Copyright (c) 2008 - 2013 Oracle Corporation. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
 * which accompanies this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *     Linda DeMichiel - Java Persistence 2.1
 *     Linda DeMichiel - Java Persistence 2.0
 *
 ******************************************************************************/ 
package javax.persistence;

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


Describes a single container or persistence provider property. Used in PersistenceContext. 
 Vendor specific properties may be included in the set of 
properties, and are passed to the persistence provider by the 
container when the entity manager is created. Properties that 
are not recognized by a vendor will be ignored.

Since:Java Persistence 1.0
/**
 * Describes a single container or persistence provider property.  Used in {@link 
 * PersistenceContext}.
 * 
 * <p> Vendor specific properties may be included in the set of 
 * properties, and are passed to the persistence provider by the 
 * container when the entity manager is created. Properties that 
 * are not recognized by a vendor will be ignored.
 *
 * @since Java Persistence 1.0
 */
@Target({})
@Retention(RUNTIME)
public @interface PersistenceProperty {

    
The name of the property 
/** The name of the property */
    String name();

    
The value of the property 
/** The value of the property */
    String value();

}