Initial revision

From-SVN: r102074
2005-07-16 00:30:23 +00:00
parent 6f4434b39b
commit f911ba985a
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+/* 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.cdrBufOutput;
+
+import org.omg.CORBA.ARG_IN;
+import org.omg.CORBA.ARG_INOUT;
+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 exists to handle obsolete invocation style using
+ * ServerRequest.
+ *
+ * @deprecated The method {@link ObjectImpl#_invoke} is much faster.
+ *
+ * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
+ */
+public class ServiceRequestAdapter
+  implements ResponseHandler
+{
+  /**
+   * A buffer for writing the response.
+   */
+  cdrBufOutput reply = new cdrBufOutput();
+
+  /**
+   * 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;
+  }
+
+  /**
+   * The old style invocation using the currently deprecated server
+   * request class.
+   *
+   * @param request a server request, containg the invocation information.
+   * @param target the invocation target
+   * @param result the result holder with the set suitable streamable to read
+   * the result or null for void.
+   */
+  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.
+        cdrBufOutput buffer = new cdrBufOutput();
+        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();
+            universalHolder uku = new universalHolder(h.reply);
+            exc.insert_Streamable(uku);
+            request.set_exception(exc);
+          }
+        else
+          {
+            if (result != null)
+            {
+              result._read(in);
+              gnuAny r = new gnuAny();
+              r.insert_Streamable(result);
+              request.set_result(r);
+            };
+
+            // 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();
+      }
+  }
+}