311 lines
9.7 KiB
Java
311 lines
9.7 KiB
Java
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/* gnuDelegate.java --
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Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.CORBA;
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import gnu.CORBA.CDR.cdrBufInput;
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import gnu.CORBA.GIOP.ReplyHeader;
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import org.omg.CORBA.Context;
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import org.omg.CORBA.ContextList;
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import org.omg.CORBA.ExceptionList;
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import org.omg.CORBA.MARSHAL;
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import org.omg.CORBA.NVList;
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import org.omg.CORBA.NamedValue;
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import org.omg.CORBA.ORB;
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import org.omg.CORBA.Request;
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import org.omg.CORBA.portable.ApplicationException;
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import org.omg.CORBA.portable.InputStream;
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import org.omg.CORBA.portable.OutputStream;
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import org.omg.CORBA.portable.RemarshalException;
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import java.io.IOException;
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import java.net.Socket;
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/**
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* The Classpath implementation of the {@link Delegate} functionality in the
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* case, when the object was constructed from an IOR object. The IOR can be
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* constructed from the stringified object reference.
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*
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* There is an different instance of this delegate for each CORBA object.
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*
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* @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
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*/
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public class IOR_Delegate
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extends Simple_delegate
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{
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/**
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* Contructs an instance of object using the given IOR.
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*/
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public IOR_Delegate(ORB an_orb, IOR an_ior)
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{
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super(an_orb, an_ior);
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}
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/**
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* Creates the request to invoke the method on this object.
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*
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* @param target the object, for that the operation must be invoked.
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* @param context context (null allowed)
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* @param operation the method name
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* @param parameters the method parameters
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* @param returns the return value holder
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* @param exceptions the exceptions that can be thrown by the method
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* @param ctx_list the context list (null allowed)
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*
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* @return the created request.
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*/
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public Request create_request(org.omg.CORBA.Object target, Context context,
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String operation, NVList parameters,
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NamedValue returns
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)
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{
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gnuRequest request = new gnuRequest();
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request.setIor(getIor());
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request.set_target(target);
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request.setOperation(operation);
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request.set_args(parameters);
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request.m_context = context;
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request.set_result(returns);
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request.setORB(orb);
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return request;
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}
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/**
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* Creates the request to invoke the method on this object.
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*
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* @param target the object, for that the operation must be invoked.
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* @param context context (null allowed)
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* @param operation the method name
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* @param parameters the method parameters
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* @param returns the return value holder
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*
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* @return the created request.
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*/
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public Request create_request(org.omg.CORBA.Object target, Context context,
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String operation, NVList parameters,
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NamedValue returns, ExceptionList exceptions,
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ContextList ctx_list
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)
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{
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gnuRequest request = new gnuRequest();
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request.setIor(ior);
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request.set_target(target);
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request.setOperation(operation);
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request.set_args(parameters);
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request.m_context = context;
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request.set_result(returns);
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request.set_exceptions(exceptions);
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request.set_context_list(ctx_list);
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request.setORB(orb);
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return request;
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}
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/**
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* Invoke operation on the given object, writing parameters to the given
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* output stream.
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*
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* @param target the target object.
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* @param output the output stream, previously returned by
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* {@link #request(org.omg.CORBA.Object, String, boolean)}.
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*
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* @return the input stream, to read the response from or null for a
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* one-way request.
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*
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* @throws SystemException if the SystemException has been thrown on the
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* remote side (the exact type and the minor code matches the data of
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* the remote exception that has been thrown).
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*
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* @throws org.omg.CORBA.portable.ApplicationException as specified.
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* @throws org.omg.CORBA.portable.RemarshalException as specified.
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*/
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public InputStream invoke(org.omg.CORBA.Object target, OutputStream output)
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throws ApplicationException, RemarshalException
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{
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streamRequest request = (streamRequest) output;
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if (request.response_expected)
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{
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binaryReply response = request.request.submit();
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// Read reply header.
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ReplyHeader rh = response.header.create_reply_header();
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cdrBufInput input = response.getStream();
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input.setOrb(orb);
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rh.read(input);
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boolean moved_permanently = false;
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switch (rh.reply_status)
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{
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case ReplyHeader.NO_EXCEPTION :
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if (response.header.version.since_inclusive(1, 2))
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input.align(8);
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return input;
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case ReplyHeader.SYSTEM_EXCEPTION :
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if (response.header.version.since_inclusive(1, 2))
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input.align(8);
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throw ObjectCreator.readSystemException(input);
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case ReplyHeader.USER_EXCEPTION :
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if (response.header.version.since_inclusive(1, 2))
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input.align(8);
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input.mark(2000);
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String uxId = input.read_string();
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input.reset();
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throw new ApplicationException(uxId, input);
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case ReplyHeader.LOCATION_FORWARD_PERM :
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moved_permanently = true;
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case ReplyHeader.LOCATION_FORWARD :
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if (response.header.version.since_inclusive(1, 2))
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input.align(8);
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IOR forwarded = new IOR();
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try
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{
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forwarded._read_no_endian(input);
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}
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catch (IOException ex)
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{
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MARSHAL t = new MARSHAL("Cant read forwarding info");
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t.initCause(ex);
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throw t;
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}
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request.request.setIor(forwarded);
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// If the object has moved permanently, its IOR is replaced.
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if (moved_permanently)
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setIor(forwarded);
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return invoke(target, request);
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default :
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throw new MARSHAL("Unknow reply status: " + rh.reply_status);
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}
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}
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else
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{
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request.request.send_oneway();
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return null;
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}
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}
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/**
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* Create a request to invoke the method of this CORBA object.
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*
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* @param target the CORBA object, to that this operation must be applied.
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* @param operation the name of the method to invoke.
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*
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* @return the request.
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*/
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public Request request(org.omg.CORBA.Object target, String operation)
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{
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gnuRequest request = new gnuRequest();
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request.setIor(ior);
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request.set_target(target);
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request.setOperation(operation);
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request.setORB(orb);
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return request;
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}
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/**
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* Create a request to invoke the method of this CORBA object.
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*
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* @param target the CORBA object, to that this operation must be applied.
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* @param operation the name of the method to invoke.
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* @param response_expected specifies if this is one way message or the
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* response to the message is expected.
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*
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* @return the stream where the method arguments should be written.
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*/
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public OutputStream request(org.omg.CORBA.Object target, String operation,
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boolean response_expected
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)
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{
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gnuRequest request = new gnuRequest();
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request.setIor(ior);
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request.set_target(target);
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request.setOperation(operation);
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request.getParameterStream().response_expected = response_expected;
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request.setORB(orb);
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return request.getParameterStream();
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}
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/**
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* If there is an opened cache socket to access this object, close
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* that socket.
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*
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* @param target The target is not used, this delegate requires a
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* single instance per object.
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*/
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public void release(org.omg.CORBA.Object target)
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{
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String key = ior.Internet.host + ":" + ior.Internet.port;
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Socket socket = SocketRepository.get_socket(key);
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try
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{
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if (socket != null)
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{
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socket.close();
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}
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}
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catch (IOException ex)
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{
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// do nothing, then.
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}
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}
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}
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