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Diffstat (limited to 'gcc-4.4.3/libjava/classpath/gnu/CORBA/ServiceRequestAdapter.java')
| -rw-r--r-- | gcc-4.4.3/libjava/classpath/gnu/CORBA/ServiceRequestAdapter.java | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/CORBA/ServiceRequestAdapter.java b/gcc-4.4.3/libjava/classpath/gnu/CORBA/ServiceRequestAdapter.java new file mode 100644 index 000000000..c55405ced --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/gnu/CORBA/ServiceRequestAdapter.java @@ -0,0 +1,167 @@ +/* ServiceRequestConverter.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; + +import gnu.CORBA.CDR.BufferedCdrOutput; + +import org.omg.CORBA.ARG_IN; +import org.omg.CORBA.ARG_OUT; +import org.omg.CORBA.Any; +import org.omg.CORBA.Bounds; +import org.omg.CORBA.ServerRequest; +import org.omg.CORBA.portable.InputStream; +import org.omg.CORBA.portable.InvokeHandler; +import org.omg.CORBA.portable.OutputStream; +import org.omg.CORBA.portable.ResponseHandler; +import org.omg.CORBA.portable.Streamable; + +/** + * This class supports invocation using ServerRequest. When possible, + * it is better to use the {@link ObjectImpl#_invoke} rather than + * working via ServerRequest. However since 1.4 the ServerRequest is + * involved into POA machinery making this type of call is sometimes + * inavoidable. + * + * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) + */ +public class ServiceRequestAdapter + implements ResponseHandler +{ + /** + * A buffer for writing the response. + */ + BufferedCdrOutput reply = new BufferedCdrOutput(); + + /** + * If set to true, an exception has been thrown during the invocation. + */ + boolean isException; + + public OutputStream createExceptionReply() + { + isException = true; + return reply; + } + + public OutputStream createReply() + { + isException = false; + return reply; + } + + /** + * Make an invocation. + * + * @param request a server request, containg the invocation information. + * @param target the invocation target + * @param result the result holder with the set suitable streamable. + * Using this parameter only increase the performance. It can be + * null if the return type is void or unknown. + */ + public static void invoke(ServerRequest request, InvokeHandler target, + Streamable result + ) + { + try + { + int IN = ARG_IN.value; + int OUT = ARG_OUT.value; + + // Write all arguments to the buffer output stream. + BufferedCdrOutput buffer = new BufferedCdrOutput(); + gnuNVList args = new gnuNVList(); + request.arguments(args); + + for (int i = 0; i < args.count(); i++) + { + if ((args.item(i).flags() & IN) != 0) + { + args.item(i).value().write_value(buffer); + } + } + + ServiceRequestAdapter h = new ServiceRequestAdapter(); + + target._invoke(request.operation(), buffer.create_input_stream(), h); + + InputStream in = h.reply.create_input_stream(); + + if (h.isException) + { + // Write the exception information + gnuAny exc = new gnuAny(); + GeneralHolder uku = new GeneralHolder(h.reply); + exc.insert_Streamable(uku); + request.set_exception(exc); + } + else + { + if (result != null) + { + // Use the holder for the return value, if provided. + result._read(in); + + gnuAny r = new gnuAny(); + r.insert_Streamable(result); + request.set_result(r); + } + else + { + // Use the universal holder otherwise. + gnuAny r = new gnuAny(); + r.insert_Streamable(new StreamHolder(in)); + } + + // Unpack the arguments + for (int i = 0; i < args.count(); i++) + { + if ((args.item(i).flags() & OUT) != 0) + { + Any a = args.item(i).value(); + a.read_value(in, a.type()); + } + } + } + } + catch (Bounds ex) + { + throw new InternalError(); + } + } +}
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