/*
* Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
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*/
package com.sun.corba.se.impl.protocol;
import org.omg.CORBA.portable.ServantObject;
import com.sun.corba.se.spi.protocol.LocalClientRequestDispatcher;
import com.sun.corba.se.spi.protocol.RequestDispatcherRegistry;
import com.sun.corba.se.spi.orb.ORB;
import com.sun.corba.se.spi.ior.IOR ;
import com.sun.corba.se.spi.oa.ObjectAdapterFactory;
import com.sun.corba.se.spi.ior.ObjectAdapterId;
import com.sun.corba.se.spi.ior.TaggedProfile;
import com.sun.corba.se.spi.ior.ObjectKeyTemplate;
import com.sun.corba.se.spi.ior.ObjectId;
public abstract class LocalClientRequestDispatcherBase implements LocalClientRequestDispatcher
{
protected ORB orb;
int scid;
// Cached information needed for local dispatch
protected boolean servantIsLocal ;
protected ObjectAdapterFactory oaf ;
protected ObjectAdapterId oaid ;
protected byte[] objectId ;
// If isNextIsLocalValid.get() == Boolean.TRUE,
// the next call to isLocal should be valid
private static final ThreadLocal isNextCallValid = new ThreadLocal() {
protected synchronized Object initialValue() {
return Boolean.TRUE;
}
};
protected LocalClientRequestDispatcherBase(ORB orb, int scid, IOR ior)
{
this.orb = orb ;
TaggedProfile prof = ior.getProfile() ;
servantIsLocal = orb.getORBData().isLocalOptimizationAllowed() &&
prof.isLocal();
ObjectKeyTemplate oktemp = prof.getObjectKeyTemplate() ;
this.scid = oktemp.getSubcontractId() ;
RequestDispatcherRegistry sreg = orb.getRequestDispatcherRegistry() ;
oaf = sreg.getObjectAdapterFactory( scid ) ;
oaid = oktemp.getObjectAdapterId() ;
ObjectId oid = prof.getObjectId() ;
objectId = oid.getId() ;
}
public byte[] getObjectId()
{
return objectId ;
}
public boolean is_local(org.omg.CORBA.Object self)
{
return false;
}
/*
* Possible paths through
* useLocalInvocation/servant_preinvoke/servant_postinvoke:
*
* A: call useLocalInvocation
* If useLocalInvocation returns false, servant_preinvoke is not called.
* If useLocalInvocation returns true,
* call servant_preinvoke
* If servant_preinvoke returns null,
* goto A
* else
* (local invocation proceeds normally)
* servant_postinvoke is called
*
*/
public boolean useLocalInvocation( org.omg.CORBA.Object self )
{
if (isNextCallValid.get() == Boolean.TRUE)
return servantIsLocal ;
else
isNextCallValid.set( Boolean.TRUE ) ;
return false ;
}
/** Check that the servant in info (which must not be null) is
* an instance of the expectedType. If not, set the thread local flag
* and return false.
*/
protected boolean checkForCompatibleServant( ServantObject so,
Class expectedType )
{
if (so == null)
return false ;
// Normally, this test will never fail. However, if the servant
// and the stub were loaded in different class loaders, this test
// will fail.
if (!expectedType.isInstance( so.servant )) {
isNextCallValid.set( Boolean.FALSE ) ;
// When servant_preinvoke returns null, the stub will
// recursively re-invoke itself. Thus, the next call made from
// the stub is another useLocalInvocation call.
return false ;
}
return true ;
}
}
// End of file.