- /*
- * @(#)GIOPVersion.java 1.13 03/01/23
- *
- * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
- * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
- */
-
- package com.sun.corba.se.internal.core;
-
- public class GIOPVersion {
-
- // Static fields
-
- public static final GIOPVersion V1_0 = new GIOPVersion((byte)1, (byte)0);
- public static final GIOPVersion V1_1 = new GIOPVersion((byte)1, (byte)1);
- public static final GIOPVersion V1_2 = new GIOPVersion((byte)1, (byte)2);
-
- public static final GIOPVersion DEFAULT_VERSION = V1_2;
-
- public static final int VERSION_1_0 = 0x0100;
- public static final int VERSION_1_1 = 0x0101;
- public static final int VERSION_1_2 = 0x0102;
-
- // Instance variables
-
- public byte major = (byte) 0;
- public byte minor = (byte) 0;
-
- // Constructor
-
- public GIOPVersion() {}
-
- public GIOPVersion(byte majorB, byte minorB) {
- this.major = majorB;
- this.minor = minorB;
- }
-
- public GIOPVersion(int major, int minor) {
- this.major = (byte)major;
- this.minor = (byte)minor;
- }
-
- // Accessor methods
-
- public byte getMajor() {
- return this.major;
- }
-
- public byte getMinor() {
- return this.minor;
- }
-
- // General methods
-
- public boolean equals(GIOPVersion gv){
- return gv.major == this.major && gv.minor == this.minor ;
- }
-
- public boolean equals(Object obj) {
- if (obj != null && (obj instanceof GIOPVersion))
- return equals((GIOPVersion)obj);
- else
- return false;
- }
-
- public boolean lessThan(GIOPVersion gv) {
- if (this.major < gv.major) {
- return true;
- } else if (this.major == gv.major) {
- if (this.minor < gv.minor) {
- return true;
- }
- }
-
- return false;
- }
-
- public int intValue()
- {
- return (major << 8 | minor);
- }
-
- public String toString()
- {
- return major + "." + minor;
- }
-
- public static GIOPVersion getInstance(byte major, byte minor)
- {
- switch(((major << 8) | minor)) {
- case VERSION_1_0:
- return GIOPVersion.V1_0;
- case VERSION_1_1:
- return GIOPVersion.V1_1;
- case VERSION_1_2:
- return GIOPVersion.V1_2;
- default:
- return new GIOPVersion(major, minor);
- }
- }
-
- public static GIOPVersion parseVersion(String s)
- {
- int dotIdx = s.indexOf('.');
-
- if (dotIdx < 1 || dotIdx == s.length() - 1)
- throw new NumberFormatException("GIOP major, minor, and decimal point required: " + s);
-
- int major = Integer.parseInt(s.substring(0, dotIdx));
- int minor = Integer.parseInt(s.substring(dotIdx + 1, s.length()));
-
- return GIOPVersion.getInstance((byte)major, (byte)minor);
- }
-
- /**
- * This computes the smallest among the iorGIOPVersion and orbGIOPVersion.
- *
- * @return the smallest(iorGIOPVersion, orbGIOPVersion)
- */
- public static GIOPVersion chooseRequestVersion(ORB orb, IOR ior) {
-
- GIOPVersion orbVersion = orb.getGIOPVersion();
- GIOPVersion iorVersion = ior.getGIOPVersion();
-
- // Check if the IOR is from a legacy Sun ORB.
-
- ORBVersionImpl targetOrbVersion = (ORBVersionImpl) ior.getORBVersion();
- if (!(targetOrbVersion.equals(ORBVersionImpl.FOREIGN)) &&
- targetOrbVersion.lessThan(ORBVersionImpl.NEWER)) {
- // we are dealing with a SUN legacy orb which emits 1.1 IORs,
- // in spite of being able to handle only GIOP 1.0 messages.
- return V1_0;
- }
-
- // Now the target has to be (FOREIGN | NEWER*)
-
- byte ior_major = iorVersion.getMajor();
- byte ior_minor = iorVersion.getMinor();
-
- byte orb_major = orbVersion.getMajor();
- byte orb_minor = orbVersion.getMinor();
-
- if (orb_major < ior_major) {
- return orbVersion;
- } else if (orb_major > ior_major) {
- return iorVersion;
- } else { // both major version are the same
- if (orb_minor <= ior_minor) {
- return orbVersion;
- } else {
- return iorVersion;
- }
- }
- }
-
- /* Could be useful for Messages?
- public GIOPVersion(Message m){
- this( m.getGIOPMajorVersion() , m.getGIOPMinorVersion());
- }
- public boolean hasSameGIOPVersion(Message m){
- return this.equals(m.getGIOPVersion());
- }
- */
-
- // IO methods
-
- public void read(org.omg.CORBA.portable.InputStream istream) {
- this.major = istream.read_octet();
- this.minor = istream.read_octet();
- }
-
- public void write(org.omg.CORBA.portable.OutputStream ostream) {
- ostream.write_octet(this.major);
- ostream.write_octet(this.minor);
- }
- }