/*
 * @(#)ServantCacheLocalCRDBase.java	1.25 03/12/19
 *
 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package com.sun.corba.se.impl.protocol;

import org.omg.CORBA.BAD_OPERATION ;
import org.omg.CORBA.INTERNAL ;
import org.omg.CORBA.SystemException ;
import org.omg.CORBA.CompletionStatus ;

import com.sun.corba.se.spi.protocol.LocalClientRequestDispatcher;
import com.sun.corba.se.spi.protocol.ForwardException;

// XXX This should be in the SPI
import com.sun.corba.se.impl.protocol.LocalClientRequestDispatcherBase;

import com.sun.corba.se.spi.oa.OAInvocationInfo;
import com.sun.corba.se.spi.oa.ObjectAdapter;
import com.sun.corba.se.spi.oa.OADestroyed;

import com.sun.corba.se.spi.orb.ORB;

import com.sun.corba.se.spi.ior.IOR ;

import com.sun.corba.se.spi.logging.CORBALogDomains ;

import com.sun.corba.se.impl.logging.POASystemException;

public abstract class ServantCacheLocalCRDBase extends LocalClientRequestDispatcherBase
{

    private OAInvocationInfo cachedInfo ;
    protected POASystemException wrapper ;

    protected ServantCacheLocalCRDBase( ORB orb, int scid, IOR ior )
    {
	super( orb, scid, ior ) ;
	wrapper = POASystemException.get( orb,
	    CORBALogDomains.RPC_PROTOCOL ) ;
    }

    protected synchronized OAInvocationInfo getCachedInfo()
    {
	if (!servantIsLocal)
	    throw wrapper.servantMustBeLocal() ;

	if (cachedInfo == null) {
	    ObjectAdapter oa = oaf.find( oaid ) ;
	    cachedInfo = oa.makeInvocationInfo( objectId ) ;

	    // InvocationInfo must be pushed before calling getInvocationServant
	    orb.pushInvocationInfo( cachedInfo ) ;

	    try {
                oa.enter( );
		oa.getInvocationServant( cachedInfo ) ;
	    } catch (ForwardException freq) {
		throw wrapper.illegalForwardRequest( freq ) ;
            } catch( OADestroyed oades ) {
		// This is an error since no user of this implementation
		// should ever throw this exception
		throw wrapper.adapterDestroyed( oades ) ;
	    } finally {
                oa.returnServant( );
                oa.exit( );
		orb.popInvocationInfo() ;
	    }
	}

	return cachedInfo ;
    }
}

// End of File
