- /*
- * @(#)POACurrent.java 1.16 03/08/13
- *
- * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
- * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
- */
-
- package com.sun.corba.se.internal.POA;
-
- import java.util.*;
- import org.omg.CORBA.INTERNAL;
- import org.omg.CORBA.CompletionStatus;
- import org.omg.PortableServer.CurrentPackage.NoContext;
- import org.omg.PortableServer.POA;
- import org.omg.PortableServer.Servant;
- import org.omg.PortableServer.ServantLocatorPackage.CookieHolder;
-
- //Needs to be turned into LocalObjectImpl.
-
- public class POACurrent extends org.omg.CORBA.portable.ObjectImpl
- implements org.omg.PortableServer.Current
- {
- private POAORB orb;
- private ThreadLocal threadLocal
- = new ThreadLocal()
- {
- protected Object initialValue() {
- return new Stack();
- }
- };
-
-
- // This is used for debugging only.
- public int size()
- {
- return ((Stack) threadLocal.get()).size();
- }
-
- POACurrent(POAORB orb)
- {
- this.orb = orb;
- }
-
- public String[] _ids()
- {
- String[] ids = new String[1];
- ids[0] = "IDL:omg.org/PortableServer/Current:1.0";
- return ids;
- }
-
- //
- // Standard OMG operations.
- //
-
- public POA get_POA()
- throws
- NoContext
- {
- POA poa = peekThrowNoContext().poa();
- throwNoContextIfNull(poa);
- return poa;
- }
-
- public byte[] get_object_id()
- throws
- NoContext
- {
- byte[] objectid = peekThrowNoContext().id();
- throwNoContextIfNull(objectid);
- return objectid;
- }
-
- //
- // Implementation operations used by POA package.
- //
-
- public POAImpl getPOA()
- {
- POAImpl poa = (POAImpl) peekThrowInternal().poa();
- throwInternalIfNull(poa);
- return poa;
- }
-
- public byte[] getObjectId()
- {
- byte[] objectid = peekThrowInternal().id();
- throwInternalIfNull(objectid);
- return objectid;
- }
-
- Servant getServant()
- {
- Servant servant = peekThrowInternal().getServant();
- // If is OK for the servant to be null.
- // This could happen if POAImpl.getServant is called but
- // POAImpl.internalGetServant throws an exception.
- return servant;
- }
-
- CookieHolder getCookieHolder()
- {
- CookieHolder cookieHolder = peekThrowInternal().getCookieHolder();
- throwInternalIfNull(cookieHolder);
- return cookieHolder;
- }
-
- // This is public so we can test the stack balance.
- // It is not a security hole since this same info can be obtained from
- // PortableInterceptors.
- public String getOperation()
- {
- String operation = peekThrowInternal().getOperation();
- throwInternalIfNull(operation);
- return operation;
- }
-
- void setServant(Servant servant)
- {
- peekThrowInternal().setServant( servant );
- }
-
- void setPreInvokeCalled()
- {
- peekThrowInternal().setPreInvokeCalled();
- }
-
- boolean preInvokeCalled()
- {
- return peekThrowInternal().preInvokeCalled();
- }
-
- void setPostInvokeCalled()
- {
- peekThrowInternal().setPostInvokeCalled();
- }
-
- boolean postInvokeCalled()
- {
- return peekThrowInternal().postInvokeCalled();
- }
-
- public void addThreadInfo(POA poa, byte[] id, CookieHolder cookieHolder,
- String operation)
- {
- //The first get() initializes the stack
- Stack stack = (Stack) threadLocal.get();
- stack.push(new InvocationInfo(poa, id, cookieHolder, operation));
- }
-
- public void removeThreadInfo()
- {
- try {
- ((Stack) threadLocal.get()).pop();
- } catch(EmptyStackException e){
- // REVISIT: It doesn't seem that doing extra pops should be OK.
- //Should not occur. If it does we are still OK.
- }
- }
-
- //
- // Class utilities.
- //
-
- public InvocationInfo peekThrowNoContext()
- throws
- NoContext
- {
- InvocationInfo invocationInfo = null;
- try {
- invocationInfo =
- (InvocationInfo) ((Stack) threadLocal.get()).peek();
- } catch (EmptyStackException e) {
- throw new NoContext();
- }
- return invocationInfo;
- }
-
- private InvocationInfo peekThrowInternal()
- {
- InvocationInfo invocationInfo = null;
- try {
- invocationInfo =
- (InvocationInfo) ((Stack) threadLocal.get()).peek();
- } catch (EmptyStackException e) {
- // The completion status is maybe because this could happen
- // after the servant has been invoked.
- throw new INTERNAL("POACurrent: unbalanced threadLocal stack.",
- MinorCodes.POACURRENT_UNBALANCED_STACK,
- CompletionStatus.COMPLETED_MAYBE);
-
- }
- return invocationInfo;
- }
-
- private void throwNoContextIfNull(Object o)
- throws
- NoContext
- {
- if ( o == null ) {
- throw new NoContext();
- }
- }
-
- private void throwInternalIfNull(Object o)
- {
- if ( o == null ) {
- throw new INTERNAL("POACurrent: null field.",
- MinorCodes.POACURRENT_NULL_FIELD,
- CompletionStatus.COMPLETED_MAYBE);
- }
- }
- }