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+/* ReplyHeader.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.GIOP;
+
+import gnu.CORBA.CDR.AbstractCdrInput;
+import gnu.CORBA.CDR.AbstractCdrOutput;
+
+/**
+ * The header of the standard reply.
+ *
+ * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
+ */
+public abstract class ReplyHeader
+ extends ContextHandler
+{
+ /**
+ * Reply status, if no exception occured.
+ */
+ public static final int NO_EXCEPTION = 0;
+
+ /**
+ * Reply status, user exception.
+ */
+ public static final int USER_EXCEPTION = 1;
+
+ /**
+ * Reply status, system exception.
+ */
+ public static final int SYSTEM_EXCEPTION = 2;
+
+ /**
+ * Reply status, if the client ORB must re - send the request to another
+ * destination. The body contains IOR.
+ */
+ public static final int LOCATION_FORWARD = 3;
+
+ /**
+ * Reply status, indicating that the target has permanently changed the
+ * address to the supplied IOR.
+ */
+ public static final int LOCATION_FORWARD_PERM = 4;
+
+ /**
+ * Reply status, indicating, that the ORB requires to resend the object
+ * address in the required addressing mode, contained as the reply body.
+ */
+ public static final int NEEDS_ADDRESSING_MODE = 5;
+
+ /**
+ * The status of this reply, holds one of the reply status constants.
+ */
+ public int reply_status;
+
+ /**
+ * The Id of request into response of which this reply has been sent.
+ */
+ public int request_id;
+
+ /**
+ * Return the message status as a string.
+ */
+ public String getStatusString()
+ {
+ switch (reply_status)
+ {
+ case NO_EXCEPTION:
+ return "ok";
+
+ case USER_EXCEPTION:
+ return "user exception";
+
+ case SYSTEM_EXCEPTION:
+ return "system exception";
+
+ case LOCATION_FORWARD:
+ return "moved";
+
+ default:
+ return null;
+ }
+ }
+
+ /**
+ * Reads the header from the stream.
+ *
+ * @param in a stream to read from.
+ */
+ public abstract void read(AbstractCdrInput in);
+
+ /**
+ * Returns a short string representation.
+ *
+ * @return a string representation.
+ */
+ public String toString()
+ {
+ String status = getStatusString();
+ if (status == null)
+ status = "status " + reply_status;
+ return request_id + ", " + status;
+ }
+
+ /**
+ * Writes the header to the stream.
+ *
+ * @param out a stream to write into.
+ */
+ public abstract void write(AbstractCdrOutput out);
+}