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package javax.naming.spi;

import java.util.Hashtable;
import javax.naming.NamingException;

 
This interface represents a builder that creates object factories.

The JNDI framework allows for object implementations to be loaded in dynamically via object factories. For example, when looking up a printer bound in the name space, if the print service binds printer names to References, the printer Reference could be used to create a printer object, so that the caller of lookup can directly operate on the printer object after the lookup. An ObjectFactory is responsible for creating objects of a specific type. JNDI uses a default policy for using and loading object factories. You can override this default policy by calling NamingManager.setObjectFactoryBuilder() with an ObjectFactoryBuilder, which contains the program-defined way of creating/loading object factories. Any ObjectFactoryBuilder implementation must implement this interface that for creating object factories.

Author:Rosanna Lee, Scott Seligman
See Also:
Since:1.3
/** * This interface represents a builder that creates object factories. *<p> * The JNDI framework allows for object implementations to * be loaded in dynamically via <em>object factories</em>. * For example, when looking up a printer bound in the name space, * if the print service binds printer names to References, the printer * Reference could be used to create a printer object, so that * the caller of lookup can directly operate on the printer object * after the lookup. An ObjectFactory is responsible for creating * objects of a specific type. JNDI uses a default policy for using * and loading object factories. You can override this default policy * by calling <tt>NamingManager.setObjectFactoryBuilder()</tt> with an ObjectFactoryBuilder, * which contains the program-defined way of creating/loading * object factories. * Any <tt>ObjectFactoryBuilder</tt> implementation must implement this * interface that for creating object factories. * * @author Rosanna Lee * @author Scott Seligman * * @see ObjectFactory * @see NamingManager#getObjectInstance * @see NamingManager#setObjectFactoryBuilder * @since 1.3 */
public interface ObjectFactoryBuilder {
Creates a new object factory using the environment supplied.

The environment parameter is owned by the caller. The implementation will not modify the object or keep a reference to it, although it may keep a reference to a clone or copy.

Params:
  • obj – The possibly null object for which to create a factory.
  • environment – Environment to use when creating the factory. Can be null.
Throws:
Returns:A non-null new instance of an ObjectFactory.
/** * Creates a new object factory using the environment supplied. *<p> * The environment parameter is owned by the caller. * The implementation will not modify the object or keep a reference * to it, although it may keep a reference to a clone or copy. * * @param obj The possibly null object for which to create a factory. * @param environment Environment to use when creating the factory. * Can be null. * @return A non-null new instance of an ObjectFactory. * @exception NamingException If an object factory cannot be created. * */
public ObjectFactory createObjectFactory(Object obj, Hashtable<?,?> environment) throws NamingException; }