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Diffstat (limited to 'gcc-4.4.3/libjava/classpath/gnu/CORBA/Poa/LocalRequest.java')
| -rw-r--r-- | gcc-4.4.3/libjava/classpath/gnu/CORBA/Poa/LocalRequest.java | 687 |
1 files changed, 687 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/CORBA/Poa/LocalRequest.java b/gcc-4.4.3/libjava/classpath/gnu/CORBA/Poa/LocalRequest.java new file mode 100644 index 000000000..4a9ef8d90 --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/gnu/CORBA/Poa/LocalRequest.java @@ -0,0 +1,687 @@ +/* LocalRequest.java -- + Copyright (C) 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.CORBA.Poa; + +import gnu.CORBA.CDR.BufferedCdrOutput; +import gnu.CORBA.GIOP.MessageHeader; +import gnu.CORBA.GIOP.v1_2.ReplyHeader; +import gnu.CORBA.GIOP.v1_2.RequestHeader; +import gnu.CORBA.Interceptor.gnuClientRequestInfo; +import gnu.CORBA.Interceptor.gnuServerRequestInfo; +import gnu.CORBA.typecodes.RecordTypeCode; +import gnu.CORBA.ObjectCreator; +import gnu.CORBA.Unexpected; +import gnu.CORBA.gnuAny; +import gnu.CORBA.gnuRequest; +import gnu.CORBA.StreamHolder; +import gnu.CORBA.StreamBasedRequest; + +import org.omg.CORBA.ARG_OUT; +import org.omg.CORBA.Any; +import org.omg.CORBA.BAD_INV_ORDER; +import org.omg.CORBA.BAD_OPERATION; +import org.omg.CORBA.Bounds; +import org.omg.CORBA.NamedValue; +import org.omg.CORBA.ORB; +import org.omg.CORBA.SystemException; +import org.omg.CORBA.TCKind; +import org.omg.CORBA.UnknownUserException; +import org.omg.CORBA.UserException; +import org.omg.CORBA.portable.ApplicationException; +import org.omg.CORBA.portable.InputStream; +import org.omg.CORBA.portable.InvokeHandler; +import org.omg.CORBA.portable.ObjectImpl; +import org.omg.CORBA.portable.OutputStream; +import org.omg.CORBA.portable.ResponseHandler; +import org.omg.PortableInterceptor.ClientRequestInterceptorOperations; +import org.omg.PortableInterceptor.ForwardRequest; +import org.omg.PortableInterceptor.ServerRequestInterceptorOperations; +import org.omg.PortableServer.CurrentOperations; +import org.omg.PortableServer.CurrentPackage.NoContext; +import org.omg.PortableServer.DynamicImplementation; +import org.omg.PortableServer.POA; +import org.omg.PortableServer.Servant; +import org.omg.PortableServer.ServantLocatorPackage.CookieHolder; +import org.omg.PortableServer.portable.Delegate; + +import java.io.IOException; + +/** + * Directs the invocation to the locally available servant. The POA servant does + * not longer implement the CORBA object and cannot be substituted directly. + * + * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) + */ +public class LocalRequest extends gnuRequest implements ResponseHandler, + CurrentOperations +{ + /** + * Used by servant locator, if involved. + */ + CookieHolder cookie; + + /** + * The object Id. + */ + final byte[] Id; + + /** + * The message header (singleton is sufficient). + */ + private static final MessageHeader header = new MessageHeader(); + + /** + * True if the stream was obtained by invoking {@link #createExceptionReply()}, + * false otherwise. + */ + boolean exceptionReply; + + /** + * The buffer to write into. + */ + BufferedCdrOutput buffer; + + /** + * The responsible POA. + */ + final gnuPOA poa; + + /** + * The servant delegate to obtain the handler. + */ + gnuServantObject object; + + /** + * Used (reused) with dynamic implementation. + */ + LocalServerRequest serverRequest; + + /** + * Create an instance of the local request. + */ + public LocalRequest(gnuServantObject local_object, gnuPOA a_poa, byte[] an_id) + { + Id = an_id; + poa = a_poa; + + // Instantiate the cookie holder only if required. + if (poa.servant_locator != null) + { + cookie = new CookieHolder(); + } + object = local_object; + prepareStream(); + } + + /** + * Make an invocation and return a stream from where the results can be read + * and throw ApplicationException, where applicable. + */ + org.omg.CORBA.portable.InputStream s_invoke(InvokeHandler handler) + throws ApplicationException + { + try + { + poa.m_orb.currents.put(Thread.currentThread(), this); + + org.omg.CORBA.portable.InputStream input = v_invoke(handler); + + if (!exceptionReply) + { + return input; + } + else + { + input.mark(500); + + String id = input.read_string(); + try + { + input.reset(); + } + catch (IOException ex) + { + InternalError ierr = new InternalError(); + ierr.initCause(ex); + throw ierr; + } + throw new ApplicationException(id, input); + } + } + finally + { + poa.m_orb.currents.remove(Thread.currentThread()); + } + } + + /** + * Make an invocation and return a stream from where the results can be read. + * + * @param handler the invoke handler (can be null, then it is obtained self + * dependently). + */ + public org.omg.CORBA.portable.InputStream v_invoke(InvokeHandler handler) + { + // Check maybe POA is in the discarding mode (will throw TRANSIENT if it is). + poa.checkDiscarding(); + + // Local request must be intercepted both by server and request + // interceptors. + boolean s_intercept = false; + ServerRequestInterceptorOperations s_interceptor = null; + gnuServerRequestInfo s_info = null; + + boolean c_intercept = false; + ClientRequestInterceptorOperations c_interceptor = null; + gnuClientRequestInfo c_info = null; + + try + { + if (poa.m_orb.iServer != null || poa.m_orb.iClient != null) + { + setORB(poa.m_orb); + + // These two are only needed with interceptors. + m_rqh = new RequestHeader(); + m_rqh.operation = m_operation; + m_rph = new ReplyHeader(); + + m_rqh.object_key = object.Id; + m_rph.request_id = m_rqh.request_id; + } + + if (poa.m_orb.iClient != null) + { + c_interceptor = poa.m_orb.iClient; + + c_info = new gnuClientRequestInfo(this); + c_intercept = true; + + c_interceptor.send_request(c_info); + + m_target = object; + } + + if (poa.m_orb.iServer != null) + { + s_interceptor = poa.m_orb.iServer; + + s_info = new gnuServerRequestInfo(object, m_rqh, m_rph); + s_info.m_request = this; + + s_intercept = true; + + s_interceptor.receive_request_service_contexts(s_info); + } + + if (handler == null) + { + handler = object.getHandler(operation(), cookie, false); + } + + BufferedCdrOutput request_part = new BufferedCdrOutput(); + + request_part.setOrb(orb()); + + if (m_args != null && m_args.count() > 0) + { + write_parameters(header, request_part); + + if (m_parameter_buffer != null) + { + throw new BAD_INV_ORDER("Please either add parameters or " + + "write them into stream, but not both " + "at once." + ); + } + } + + if (m_parameter_buffer != null) + { + write_parameter_buffer(header, request_part); + } + + Servant servant; + + if (handler instanceof Servant) + { + servant = (Servant) handler; + } + else + { + throw new BAD_OPERATION("Unexpected handler type " + handler); + } + + org.omg.CORBA.portable.InputStream input = + request_part.create_input_stream(); + + // Ensure the servant (handler) has a delegate set. + ServantDelegateImpl sd = null; + + Delegate d = null; + + try + { + d = servant._get_delegate(); + } + catch (Exception ex) + { + // In some cases exception is thrown if the delegate is not set. + } + if (d instanceof ServantDelegateImpl) + { + // If the delegate is already set, try to reuse the existing + // instance. + sd = (ServantDelegateImpl) d; + if (sd.object != object) + { + sd = new ServantDelegateImpl(servant, poa, Id); + } + } + else + { + sd = new ServantDelegateImpl(servant, poa, Id); + } + servant._set_delegate(sd); + + try + { + ORB o = orb(); + if (o instanceof ORB_1_4) + { + ((ORB_1_4) o).currents.put(Thread.currentThread(), this); + } + + try + { + if (s_intercept) + { + s_interceptor.receive_request(s_info); + } + handler._invoke(m_operation, input, this); + + // Handler is casted into i_handler. + if ((s_intercept || c_intercept) && isExceptionReply()) + { + s_info.m_reply_header.reply_status = + ReplyHeader.USER_EXCEPTION; + m_rph.reply_status = ReplyHeader.USER_EXCEPTION; + + // Make Any, holding the user exception. + Any a = new gnuAny(); + OutputStream buf = getBuffer(); + InputStream in = buf.create_input_stream(); + String uex_idl = "unknown"; + try + { + in.mark(Integer.MAX_VALUE); + uex_idl = in.read_string(); + m_exception_id = uex_idl; + in.reset(); + } + catch (IOException e) + { + throw new Unexpected(e); + } + + try + { + UserException exception = + ObjectCreator.readUserException(uex_idl, in); + + m_environment.exception(exception); + ObjectCreator.insertWithHelper(a, exception); + } + catch (Exception e) + { + // Failed due any reason, insert without + // helper. + a.insert_Streamable(new StreamHolder( + buf.create_input_stream() + ) + ); + + RecordTypeCode r = + new RecordTypeCode(TCKind.tk_except); + r.setId(uex_idl); + r.setName(ObjectCreator.getDefaultName(uex_idl)); + } + + s_info.m_usr_exception = a; + c_info.m_wrapped_exception = a; + s_interceptor.send_exception(s_info); + c_interceptor.receive_exception(c_info); + } + else + { + if (s_intercept) + { + s_info.m_reply_header.reply_status = + ReplyHeader.NO_EXCEPTION; + s_interceptor.send_reply(s_info); + } + if (c_intercept) + { + m_rph.reply_status = ReplyHeader.NO_EXCEPTION; + c_interceptor.receive_reply(c_info); + } + } + } + catch (SystemException sys_ex) + { + if (s_intercept) + { + s_info.m_reply_header.reply_status = + ReplyHeader.SYSTEM_EXCEPTION; + s_info.m_sys_exception = sys_ex; + s_interceptor.send_exception(s_info); + } + + if (c_intercept) + { + m_rph.reply_status = ReplyHeader.SYSTEM_EXCEPTION; + + Any a = new gnuAny(); + if (ObjectCreator.insertSysException(a, sys_ex)) + { + c_info.m_wrapped_exception = a; + } + c_interceptor.receive_exception(c_info); + } + + throw sys_ex; + } + } + finally + { + ORB o = orb(); + if (o instanceof ORB_1_4) + { + ((ORB_1_4) o).currents.remove(Thread.currentThread()); + } + } + + if (poa.servant_locator != null) + { + poa.servant_locator.postinvoke(object.Id, poa, operation(), + cookie.value, object.getServant() + ); + } + return buffer.create_input_stream(); + } + + catch (ForwardRequest fex) + { + // May be thrown by interceptor. + if (s_intercept) + { + Forwarding: + while (true) + { + s_info.m_reply_header.reply_status = + ReplyHeader.LOCATION_FORWARD; + s_info.m_forward_reference = fex.forward; + try + { + s_interceptor.send_other(s_info); + break Forwarding; + } + catch (ForwardRequest fex2) + { + s_info.m_forward_reference = fex2.forward; + fex.forward = s_info.m_forward_reference; + } + } + } + + if (c_intercept) + { + this.m_rph.reply_status = ReplyHeader.LOCATION_FORWARD; + this.m_forwarding_target = fex.forward; + try + { + c_interceptor.receive_other(c_info); + } + catch (ForwardRequest fex2) + { + fex.forward = fex2.forward; + } + } + throw new gnuForwardRequest(fex.forward); + } + catch (gnuForwardRequest fex) + { + // May be thrown during activation. + // May be thrown during activation. + if (s_intercept) + { + Forwarding: + while (true) + { + s_info.m_reply_header.reply_status = + ReplyHeader.LOCATION_FORWARD; + s_info.m_forward_reference = fex.forward_reference; + try + { + s_interceptor.send_other(s_info); + break Forwarding; + } + catch (ForwardRequest fex2) + { + s_info.m_forward_reference = fex2.forward; + fex.forward_reference = (ObjectImpl) fex2.forward; + } + } + } + + if (c_intercept) + { + this.m_rph.reply_status = ReplyHeader.LOCATION_FORWARD; + this.m_forwarding_target = fex.forward_reference; + try + { + c_interceptor.receive_other(c_info); + } + catch (ForwardRequest fex2) + { + fex.forward_reference = (ObjectImpl) fex2.forward; + } + } + throw fex; + } + } + + /** + * Make an invocation and store the result in the fields of this Request. Used + * with DII only. + */ + public void invoke() + { + InvokeHandler handler = object.getHandler(operation(), cookie, false); + + if (handler instanceof DynamicImpHandler) + { + DynamicImplementation dyn = ((DynamicImpHandler) handler).servant; + if (serverRequest == null) + { + serverRequest = new LocalServerRequest(this); + } + try + { + poa.m_orb.currents.put(Thread.currentThread(), this); + dyn.invoke(serverRequest); + } + finally + { + poa.m_orb.currents.remove(Thread.currentThread()); + } + } + else + { + org.omg.CORBA.portable.InputStream input = v_invoke(handler); + + if (!exceptionReply) + { + NamedValue arg; + + // Read return value, if set. + if (m_result != null) + { + m_result.value().read_value(input, m_result.value().type()); + } + + // Read returned parameters, if set. + if (m_args != null) + { + for (int i = 0; i < m_args.count(); i++) + { + try + { + arg = m_args.item(i); + + // Both ARG_INOUT and ARG_OUT have this binary flag set. + if ((arg.flags() & ARG_OUT.value) != 0) + { + arg.value().read_value(input, arg.value().type()); + } + } + catch (Bounds ex) + { + Unexpected.error(ex); + } + } + } + } + else// User exception reply + { + // Prepare an Any that will hold the exception. + gnuAny exc = new gnuAny(); + + exc.insert_Streamable(new StreamHolder(input)); + + UnknownUserException unuex = new UnknownUserException(exc); + m_environment.exception(unuex); + } + } + } + + /** + * Get an output stream for providing details about the exception. Before + * returning the stream, the handler automatically writes the message header + * and the reply about exception header, but not the message header. + * + * @return the stream to write exception details into. + */ + public OutputStream createExceptionReply() + { + exceptionReply = true; + prepareStream(); + return buffer; + } + + /** + * Get an output stream for writing a regular reply (not an exception). + * + * Before returning the stream, the handler automatically writes the regular + * reply header, but not the message header. + * + * @return the output stream for writing a regular reply. + */ + public OutputStream createReply() + { + exceptionReply = false; + prepareStream(); + return buffer; + } + + /** + * Get the buffer, normally containing the written reply. The reply includes + * the reply header (or the exception header) but does not include the message + * header. + * + * The stream buffer can also be empty if no data have been written into + * streams, returned by {@link #createReply()} or + * {@link #createExceptionReply()}. + * + * @return the CDR output stream, containing the written output. + */ + BufferedCdrOutput getBuffer() + { + return buffer; + } + + /** + * True if the stream was obtained by invoking {@link #createExceptionReply()}, + * false otherwise (usually no-exception reply). + */ + boolean isExceptionReply() + { + return exceptionReply; + } + + /** + * Compute the header offset, set the correct version number and codeset. + */ + private void prepareStream() + { + buffer = new BufferedCdrOutput(); + buffer.setOrb(orb()); + } + + /** + * Get the parameter stream, where the invocation arguments should be written + * if they are written into the stream directly. + */ + public StreamBasedRequest getParameterStream() + { + m_parameter_buffer = new StreamBasedRequest(); + m_parameter_buffer.request = this; + m_parameter_buffer.setOrb(poa.orb()); + return m_parameter_buffer; + } + + public byte[] get_object_id() throws NoContext + { + return Id; + } + + public POA get_POA() throws NoContext + { + return poa; + } +}
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