OldJIDLObjectKeyTemplate.java

/*
 * Copyright (c) 2000, 2003, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package org.jboss.com.sun.corba.se.impl.ior;

import org.jboss.com.sun.corba.se.impl.encoding.CDRInputStream;
import org.jboss.com.sun.corba.se.spi.ior.ObjectId;
import org.jboss.com.sun.corba.se.spi.orb.ORB;
import org.jboss.com.sun.corba.se.spi.orb.ORBVersionFactory;
import org.omg.CORBA.OctetSeqHolder;
import org.omg.CORBA_2_3.portable.InputStream;
import org.omg.CORBA_2_3.portable.OutputStream;

/**
 * Handles object keys created by JDK ORBs from before JDK 1.4.0.
 */
public final class OldJIDLObjectKeyTemplate extends OldObjectKeyTemplateBase
{
    /**
     * JDK 1.3.1 FCS did not include a version byte at the end of its object keys. JDK 1.3.1_01 included the byte with
     * the value 1. Anything below 1 is considered an invalid value.
     */
    public static final byte NULL_PATCH_VERSION = 0;

    byte patchVersion = OldJIDLObjectKeyTemplate.NULL_PATCH_VERSION;

    public OldJIDLObjectKeyTemplate(ORB orb, int magic, int scid, InputStream is, OctetSeqHolder osh)
    {
        this(orb, magic, scid, is);

        osh.value = readObjectKey(is);

        /**
         * Beginning with JDK 1.3.1_01, a byte was placed at the end of the object key with a value indicating the patch
         * version. JDK 1.3.1_01 had the value 1. If other patches are necessary which involve ORB versioning changes,
         * they should increment the patch version.
         * 
         * Note that if we see a value greater than 1 in this code, we will treat it as if we're talking to the most
         * recent ORB version.
         * 
         * WARNING: This code is sensitive to changes in CDRInputStream getPosition. It assumes that the CDRInputStream
         * is an encapsulation whose position can be compared to the object key array length.
         */
        if (magic == ObjectKeyFactoryImpl.JAVAMAGIC_NEW && osh.value.length > ((CDRInputStream) is).getPosition())
        {

            patchVersion = is.read_octet();

            if (patchVersion == ObjectKeyFactoryImpl.JDK1_3_1_01_PATCH_LEVEL)
                setORBVersion(ORBVersionFactory.getJDK1_3_1_01());
            else if (patchVersion > ObjectKeyFactoryImpl.JDK1_3_1_01_PATCH_LEVEL)
                setORBVersion(ORBVersionFactory.getORBVersion());
            else
                throw wrapper.invalidJdk131PatchLevel(new Integer(patchVersion));
        }
    }

    public OldJIDLObjectKeyTemplate(ORB orb, int magic, int scid, int serverid)
    {
        super(orb, magic, scid, serverid, JIDL_ORB_ID, JIDL_OAID);
    }

    public OldJIDLObjectKeyTemplate(ORB orb, int magic, int scid, InputStream is)
    {
        this(orb, magic, scid, is.read_long());
    }

    protected void writeTemplate(OutputStream os)
    {
        os.write_long(getMagic());
        os.write_long(getSubcontractId());
        os.write_long(getServerId());
    }

    public void write(ObjectId objectId, OutputStream os)
    {
        super.write(objectId, os);

        if (patchVersion != OldJIDLObjectKeyTemplate.NULL_PATCH_VERSION)
            os.write_octet(patchVersion);
    }
}