Java example source code file (iiopURLContextFactory.java)

This example Java source code file (iiopURLContextFactory.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

context, hashtable, illegalargumentexception, name, naming, namingexception, object, objectfactory, resolveresult, string, urls, util

The iiopURLContextFactory.java Java example source code

/*
 * Copyright (c) 1999, 2011, 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.jndi.url.iiop;

import javax.naming.*;
import javax.naming.spi.*;

import java.util.Hashtable;

import com.sun.jndi.cosnaming.CNCtx;

/**
 * An IIOP URL context factory.
 *
 * @author Rosanna Lee
 */

public class iiopURLContextFactory implements ObjectFactory {

    public Object getObjectInstance(Object urlInfo, Name name, Context nameCtx,
                                    Hashtable<?,?> env) throws Exception {

//System.out.println("iiopURLContextFactory " + urlInfo);
        if (urlInfo == null) {
            return new iiopURLContext(env);
        }
        if (urlInfo instanceof String) {
            return getUsingURL((String)urlInfo, env);
        } else if (urlInfo instanceof String[]) {
            return getUsingURLs((String[])urlInfo, env);
        } else {
            throw (new IllegalArgumentException(
                    "iiopURLContextFactory.getObjectInstance: " +
                    "argument must be a URL String or array of URLs"));
        }
    }

    /**
      * Resolves 'name' into a target context with remaining name.
      * It only resolves the hostname/port number. The remaining name
      * contains the rest of the name found in the URL.
      *
      * For example, with a iiop URL "iiop://localhost:900/rest/of/name",
      * this method resolves "iiop://localhost:900/" to the "NameService"
      * context on for the ORB at 'localhost' on port 900,
      * and returns as the remaining name "rest/of/name".
      */
    static ResolveResult getUsingURLIgnoreRest(String url, Hashtable<?,?> env)
        throws NamingException {
        return CNCtx.createUsingURL(url, env);
    }

    private static Object getUsingURL(String url, Hashtable<?,?> env)
        throws NamingException {
        ResolveResult res = getUsingURLIgnoreRest(url, env);

        Context ctx = (Context)res.getResolvedObj();
        try {
            return ctx.lookup(res.getRemainingName());
        } finally {
            ctx.close();
        }
    }

    private static Object getUsingURLs(String[] urls, Hashtable<?,?> env) {
        for (int i = 0; i < urls.length; i++) {
            String url = urls[i];
            try {
                Object obj = getUsingURL(url, env);
                if (obj != null) {
                    return obj;
                }
            } catch (NamingException e) {
            }
        }
        return null;    // %%% exception??
    }
}