| /* RequestHeader.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.v1_2; |
| |
| import gnu.CORBA.Minor; |
| import gnu.CORBA.CDR.AbstractCdrInput; |
| import gnu.CORBA.CDR.AbstractCdrOutput; |
| import gnu.CORBA.GIOP.ServiceContext; |
| import gnu.CORBA.GIOP.CodeSetServiceContext; |
| |
| import java.io.IOException; |
| |
| import org.omg.CORBA.MARSHAL; |
| import org.omg.CORBA.NO_IMPLEMENT; |
| |
| /** |
| * The GIOP 1.2 request header. The GIOP 1.1 request header |
| * is the same as GIOP 1.0 request header, if taking the |
| * alignment into consideration. |
| * |
| * @author Audrius Meskauskas (AudriusA@Bioinformatics.org) |
| */ |
| public class RequestHeader |
| extends gnu.CORBA.GIOP.v1_0.RequestHeader |
| { |
| /** |
| * Use serialVersionUID for interoperability. |
| */ |
| private static final long serialVersionUID = 1; |
| |
| /** |
| * Indicates that the object is addressed by the object key. |
| */ |
| public static final short KeyAddr = 0; |
| |
| /** |
| * Indicates that the object is addressed by the IOP tagged profile. |
| */ |
| public static final short ProfileAddr = 1; |
| |
| /** |
| * Indicates that the objec is addressed by IOR addressing info. |
| */ |
| public static final short ReferenceAddr = 2; |
| |
| /** |
| * The response flags of the header. By default, the flags are initialised |
| * by value 0x3 (response expected). |
| */ |
| public byte response_flags = 3; |
| |
| /** |
| * The used addressing method. |
| */ |
| public short AddressingDisposition; |
| |
| /** |
| * Adds the standard encoding context. |
| */ |
| public RequestHeader() |
| { |
| service_context = new ServiceContext[] { CodeSetServiceContext.STANDARD }; |
| } |
| |
| /** |
| * Set if the sender expects any response to this message. |
| * Clears or sets the 2 lower bits of flags |
| * (0 - not expected, 0x3 - expected). |
| */ |
| public void setResponseExpected(boolean expected) |
| { |
| response_expected = expected; |
| |
| if (expected) |
| response_flags = (byte) (response_flags | 0x3); |
| else |
| response_flags = (byte) (response_flags & (~0x3)); |
| } |
| |
| /** |
| * Return true if response is expected. |
| * |
| * @return true if the two lowest bits of the flags are set or |
| * the response expected is explicitly set to true. |
| */ |
| public boolean isResponseExpected() |
| { |
| return response_expected || ((response_flags & 0x3) == 0x3); |
| } |
| |
| /** |
| * Read the header from the given stream. |
| * |
| * @param in a stream to read from. |
| */ |
| public void read(AbstractCdrInput in) |
| { |
| try |
| { |
| request_id = in.read_ulong(); |
| response_flags = (byte) in.read(); |
| |
| // Skip 3 reserved octets: |
| in.skip(3); |
| |
| // Read target address. |
| AddressingDisposition = in.read_ushort(); |
| |
| switch (AddressingDisposition) |
| { |
| case KeyAddr : |
| object_key = in.read_sequence(); |
| break; |
| |
| // TODO FIXME add other addressing methods. |
| case ProfileAddr : |
| throw new NO_IMPLEMENT("Object addressing by IOP tagged profile"); |
| |
| case ReferenceAddr : |
| throw new NO_IMPLEMENT("Object addressing by by IOR addressing info"); |
| |
| default : |
| MARSHAL m = new MARSHAL("Unknow addressing method in request, " + |
| AddressingDisposition |
| ); |
| m.minor = Minor.UnsupportedAddressing; |
| throw m; |
| } |
| |
| operation = in.read_string(); |
| service_context = gnu.CORBA.GIOP.ServiceContext.readSequence(in); |
| |
| // No requesting principal in this new format. |
| in.setCodeSet(CodeSetServiceContext.find(service_context)); |
| } |
| catch (IOException ex) |
| { |
| MARSHAL t = new MARSHAL(); |
| t.minor = Minor.Header; |
| t.initCause(ex); |
| throw t; |
| } |
| } |
| |
| /** |
| * Return a string representation. |
| */ |
| public String toString() |
| { |
| return "Request " + request_id + ", call '" + operation + "' on " + |
| bytes(object_key) + ", " + |
| (response_expected ? "wait response" : "one way") + |
| " addressed by " + " method " + AddressingDisposition + "." + |
| contexts(); |
| } |
| |
| /** |
| * Write the header to the given stream. |
| * |
| * @param out a stream to write into. |
| */ |
| public void write(AbstractCdrOutput out) |
| { |
| out.write_ulong(request_id); |
| |
| out.write(response_flags); |
| |
| // Skip 3 reserved octets: |
| out.write(0); |
| out.write(0); |
| out.write(0); |
| |
| // Write addressing disposition from IOR. |
| // TODO FIXME add other addressing methods. |
| out.write_ushort(KeyAddr); |
| |
| out.write_sequence(object_key); |
| |
| out.write_string(operation); |
| |
| ServiceContext.writeSequence(out, service_context); |
| |
| // No requesting principal in this new format. |
| out.setCodeSet(CodeSetServiceContext.find(service_context)); |
| } |
| } |