poapolicymediatorimpl_r_uds.java

java1.6众多例子参考

/*
 * @(#)POAPolicyMediatorImpl_R_UDS.java	1.24 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package com.sun.corba.se.impl.oa.poa ;

import java.util.Enumeration ;

import org.omg.PortableServer.Servant ;
import org.omg.PortableServer.ServantManager ;
import org.omg.PortableServer.ForwardRequest ;
import org.omg.PortableServer.POAPackage.WrongPolicy ;
import org.omg.PortableServer.POAPackage.ObjectNotActive ;
import org.omg.PortableServer.POAPackage.ServantNotActive ;
import org.omg.PortableServer.POAPackage.ObjectAlreadyActive ;
import org.omg.PortableServer.POAPackage.ServantAlreadyActive ;
import org.omg.PortableServer.POAPackage.NoServant ;

import com.sun.corba.se.impl.orbutil.concurrent.SyncUtil ;
import com.sun.corba.se.impl.orbutil.ORBUtility ;
import com.sun.corba.se.impl.orbutil.ORBConstants ;

/** Implementation of POARequesHandler that provides policy specific
 * operations on the POA.
 */
public class POAPolicyMediatorImpl_R_UDS extends POAPolicyMediatorBase_R {
    private Servant defaultServant ;

    POAPolicyMediatorImpl_R_UDS( Policies policies, POAImpl poa ) 
    {
	// assert policies.retainServants() 
	super( policies, poa ) ;
	defaultServant = null ;

	// policies.useDefaultServant()
	if (!policies.useDefaultServant())
	    throw poa.invocationWrapper().policyMediatorBadPolicyInFactory() ;
    }
    
    protected java.lang.Object internalGetServant( byte[] id, 
	String operation ) throws ForwardRequest
    { 
	Servant servant = internalIdToServant( id ) ;
	if (servant == null)
	    servant = defaultServant ;

	if (servant == null)
	    throw poa.invocationWrapper().poaNoDefaultServant() ;

	return servant ;
    }

    public void etherealizeAll() 
    {	
	// NO-OP
    }

    public ServantManager getServantManager() throws WrongPolicy
    {
	throw new WrongPolicy();
    }

    public void setServantManager( ServantManager servantManager ) throws WrongPolicy
    {
	throw new WrongPolicy();
    }

    public Servant getDefaultServant() throws NoServant, WrongPolicy 
    {
	if (defaultServant == null)
	    throw new NoServant();
	else
	    return defaultServant;
    }

    public void setDefaultServant( Servant servant ) throws WrongPolicy
    {
	defaultServant = servant;
	setDelegate(defaultServant, "DefaultServant".getBytes());
    }

    public Servant idToServant( byte[] id ) 
	throws WrongPolicy, ObjectNotActive
    {
	ActiveObjectMap.Key key = new ActiveObjectMap.Key( id ) ;
	Servant s = internalKeyToServant(key);
	
	if (s == null)
	    if (defaultServant != null)
		s = defaultServant;

	if (s == null)
	    throw new ObjectNotActive() ;

	return s;
    }
}