ServiceContextRegistry.java

/*
 * Copyright (c) 1999, 2004, 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.
 *
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package org.jboss.com.sun.corba.se.spi.servicecontext;

import java.util.Enumeration;
import java.util.Vector;

import org.jboss.com.sun.corba.se.impl.orbutil.ORBUtility;
import org.jboss.com.sun.corba.se.spi.orb.ORB;
import org.omg.CORBA.BAD_PARAM;

public class ServiceContextRegistry
{

    private Vector<ServiceContextData> scCollection;

    private void dprint(String msg)
    {
        ORBUtility.dprint(this, msg);
    }

    public ServiceContextRegistry(ORB orb)
    {
        scCollection = new Vector<ServiceContextData>();
    }

    /**
     * Register the ServiceContext class so that it will be recognized by the read method. Class cls must have the
     * following properties:
     * <ul>
     * <li>It must derive from org.jboss.com.sun.corba.se.spi.servicecontext.ServiceContext.</li>
     * <li>It must have a public static final int SERVICE_CONTEXT_ID member.</li>
     * <li>It must implement a constructor that takes a org.omg.CORBA_2_3.portable.InputStream argument.</li>
     * </ul>
     */
    public void register(Class<?> cls)
    {
        if (ORB.ORBInitDebug)
            dprint("Registering service context class " + cls);

        ServiceContextData scd = new ServiceContextData(cls);

        if (findServiceContextData(scd.getId()) == null)
            scCollection.addElement(scd);
        else
            throw new BAD_PARAM("Tried to register duplicate service context");
    }

    public ServiceContextData findServiceContextData(int scId)
    {
        if (ORB.ORBInitDebug)
            dprint("Searching registry for service context id " + scId);

        Enumeration<ServiceContextData> enumeration = scCollection.elements();
        while (enumeration.hasMoreElements())
        {
            ServiceContextData scd = enumeration.nextElement();
            if (scd.getId() == scId)
            {
                if (ORB.ORBInitDebug)
                    dprint("Service context data found: " + scd);

                return scd;
            }
        }

        if (ORB.ORBInitDebug)
            dprint("Service context data not found");

        return null;
    }
}