Glassfish example source code file (JavaModuleNamingProxy.java)

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

Java - Glassfish tags/keywords

bundledescriptor, bundledescriptor, componentenvmanager, ejbdescriptor, initialcontext, java_module_name, jndinameenvironment, log, logging, naming, namingexception, namingexception, object, object, string, string, stringbuffer, util

The Glassfish JavaModuleNamingProxy.java source code

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2006-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.enterprise.container.common.impl;


import org.glassfish.api.naming.NamedNamingObjectProxy;
import org.glassfish.api.invocation.ComponentInvocation;
import org.glassfish.api.admin.*;

import com.sun.enterprise.deployment.*;


import org.jvnet.hk2.annotations.Inject;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.component.Habitat;
import org.jvnet.hk2.component.PostConstruct;

import javax.naming.NamingException;

import com.sun.enterprise.container.common.spi.util.ComponentEnvManager;
import com.sun.enterprise.container.common.spi.ManagedBeanManager;
import com.sun.logging.LogDomains;

import javax.naming.*;
import java.util.Hashtable;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.glassfish.api.admin.ProcessEnvironment;
import org.glassfish.api.admin.ProcessEnvironment.ProcessType;


@Service
public class JavaModuleNamingProxy
        implements NamedNamingObjectProxy, PostConstruct {

    @Inject
    Habitat habitat;

    @Inject
    private ProcessEnvironment processEnv;

    private ProcessEnvironment.ProcessType processType;


    private static Logger _logger = LogDomains.getLogger(JavaModuleNamingProxy.class,
            LogDomains.NAMING_LOGGER);

    private InitialContext ic;

    public void postConstruct() {
        try {
            ic = new InitialContext();
        } catch(NamingException ne) {
            throw new RuntimeException("JavaModuleNamingProxy InitialContext creation failure", ne);
        }

        processType = processEnv.getProcessType();
    }

    private static final String JAVA_MODULE_CONTEXT
            = "java:module/";

    private static final String JAVA_APP_CONTEXT
            = "java:app/";

    private  static final String JAVA_APP_NAME
            = "java:app/AppName";

    private  static final String JAVA_MODULE_NAME
            = "java:module/ModuleName";

    public Object handle(String name) throws NamingException {

        // Return null if this proxy is not responsible for processing the name.
        Object returnValue = null;

        if( name.equals(JAVA_APP_NAME) ) {

            returnValue = getAppName();

        } else if( name.equals(JAVA_MODULE_NAME) ) {

            returnValue = getModuleName();

        } else if (name.startsWith(JAVA_MODULE_CONTEXT) || name.startsWith(JAVA_APP_CONTEXT)) {

            // Check for any automatically defined portable EJB names under
            // java:module/ or java:app/.

            // If name is not found, return null instead
            // of throwing an exception.
            // The application can explicitly define environment dependencies within this
            // same namespace, so this will allow other name checking to take place.
            returnValue = getJavaModuleOrAppEJB(name);
        }

        return returnValue;
    }

    private String getAppName() throws NamingException {

        ComponentEnvManager namingMgr =
                habitat.getComponent(ComponentEnvManager.class);

        String appName = null;

        if( namingMgr != null ) {
            JndiNameEnvironment env = namingMgr.getCurrentJndiNameEnvironment();

            BundleDescriptor bd = null;

            if( env instanceof EjbDescriptor ) {
                bd = (BundleDescriptor) ((EjbDescriptor)env).getEjbBundleDescriptor();
            } else if( env instanceof BundleDescriptor ) {
                bd = (BundleDescriptor) env;
            }

            if( bd != null ) {

                Application app = bd.getApplication();

                appName = app.getAppName();               
            }
        }

        if( appName == null ) {
            throw new NamingException("Could not resolve " + JAVA_APP_NAME);
        }

        return appName;

    }

    private String getModuleName() throws NamingException {

        ComponentEnvManager namingMgr =
                habitat.getComponent(ComponentEnvManager.class);

        String moduleName = null;

        if( namingMgr != null ) {
            JndiNameEnvironment env = namingMgr.getCurrentJndiNameEnvironment();

            BundleDescriptor bd = null;

            if( env instanceof EjbDescriptor ) {
                bd = (BundleDescriptor) ((EjbDescriptor)env).getEjbBundleDescriptor();
            } else if( env instanceof BundleDescriptor ) {
                bd = (BundleDescriptor) env;
            }

            if( bd != null ) {
                moduleName = bd.getModuleDescriptor().getModuleName();
            }
        }

        if( moduleName == null ) {
            throw new NamingException("Could not resolve " + JAVA_MODULE_NAME);
        }

        return moduleName;

    }



    private Object getJavaModuleOrAppEJB(String name) throws NamingException {

        String newName = null;
        Object returnValue = null;

        if( habitat != null ) {
            ComponentEnvManager namingMgr =
                habitat.getComponent(ComponentEnvManager.class);

            if( namingMgr != null ) {
                JndiNameEnvironment env = namingMgr.getCurrentJndiNameEnvironment();

                BundleDescriptor bd = null;

                if( env instanceof EjbDescriptor ) {
                    bd = (BundleDescriptor) ((EjbDescriptor)env).getEjbBundleDescriptor();
                } else if( env instanceof BundleDescriptor ) {
                    bd = (BundleDescriptor) env;
                }

                if( bd != null ) {
                    Application app = bd.getApplication();

                    String appName = null;

                    if ( !app.isVirtual() )  {
                        appName = app.getAppName();
                    }

                    String moduleName = bd.getModuleDescriptor().getModuleName();

                    StringBuffer javaGlobalName = new StringBuffer("java:global/");


                    if( name.startsWith(JAVA_APP_CONTEXT) ) {

                        // For portable EJB names relative to java:app, module
                        // name is already contained in the lookup string.  We just
                        // replace the logical java:app with the application name
                        // in the case of an .ear.  Otherwise, in the stand-alone
                        // module case the existing module-name already matches the global
                        // syntax.

                        if (appName != null) {
                            javaGlobalName.append(appName);
                            javaGlobalName.append("/");
                        } 

                        // Replace java:app/ with the fully-qualified global portion
                        int javaAppLength = JAVA_APP_CONTEXT.length();
                        javaGlobalName.append(name.substring(javaAppLength));

                    } else {

                        // For portable EJB names relative to java:module, only add
                        // the application name if it's an .ear, but always add
                        // the module name.
   
                        if (appName != null) {
                            javaGlobalName.append(appName);
                            javaGlobalName.append("/");
                        }

                        javaGlobalName.append(moduleName);
                        javaGlobalName.append("/");

                        // Replace java:module/ with the fully-qualified global portion
                        int javaModuleLength = JAVA_MODULE_CONTEXT.length();
                        javaGlobalName.append(name.substring(javaModuleLength));
                    }

                    newName = javaGlobalName.toString();

                }
            }

        }

        if( newName != null ) {

            try {

                if( processType == ProcessType.ACC) {

                    ManagedBeanManager mbMgr = habitat.getByContract(ManagedBeanManager.class);

                    try {
                        returnValue = mbMgr.getManagedBean(newName);
                    } catch(Exception e) {
                        NamingException ne = new NamingException("Error creating ACC managed bean " + newName);
                        ne.initCause(e);
                        throw ne;                     
                    }

                }

                if( returnValue == null ) {
                    returnValue = ic.lookup(newName);
                }
            } catch(NamingException ne) {

                _logger.log(Level.FINE, newName + " Unable to map " + name + " to derived name " +
                        newName, ne);
            }
        }

        return returnValue;
    }

}