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Java example source code file (OldJIDLObjectKeyTemplate.java)

This example Java source code file (OldJIDLObjectKeyTemplate.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

corba, inputstream, integer, jidl_oaid, jidl_orb_id, null_patch_version, octetseqholder, oldjidlobjectkeytemplate, oldobjectkeytemplatebase, orb, outputstream

The OldJIDLObjectKeyTemplate.java Java example source code

/*
 * 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
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.corba.se.impl.ior;

import org.omg.CORBA.OctetSeqHolder ;

import org.omg.CORBA_2_3.portable.InputStream ;
import org.omg.CORBA_2_3.portable.OutputStream ;

import com.sun.corba.se.spi.ior.ObjectId ;
import com.sun.corba.se.spi.ior.ObjectKeyFactory ;

import com.sun.corba.se.spi.orb.ORB ;
import com.sun.corba.se.spi.orb.ORBVersion ;
import com.sun.corba.se.spi.orb.ORBVersionFactory ;

import com.sun.corba.se.impl.ior.ObjectKeyFactoryImpl ;

import com.sun.corba.se.impl.encoding.CDRInputStream ;

/**
 * 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 ) ;
    }
}

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