All Downloads are FREE. Search and download functionalities are using the official Maven repository.

javax.xml.ws.spi.FactoryFinder Maven / Gradle / Ivy

There is a newer version: 2.3.1
Show newest version
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2005-2010 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 javax.xml.ws.spi;

import java.io.InputStream;
import java.io.File;
import java.io.FileInputStream;

import java.util.Properties;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import javax.xml.ws.WebServiceException;

class FactoryFinder {

    /**
     * Creates an instance of the specified class using the specified 
     * ClassLoader object.
     *
     * @exception WebServiceException if the given class could not be found
     *            or could not be instantiated
     */
    private static Object newInstance(String className,
                                      ClassLoader classLoader)
    {
        try {
            Class spiClass = safeLoadClass(className, classLoader);
            return spiClass.newInstance();
        } catch (ClassNotFoundException x) {
            throw new WebServiceException(
                "Provider " + className + " not found", x);
        } catch (Exception x) {
            throw new WebServiceException(
                "Provider " + className + " could not be instantiated: " + x,
                x);
        }
    }

    /**
     * Finds the implementation Class object for the given
     * factory name, or if that fails, finds the Class object
     * for the given fallback class name. The arguments supplied MUST be
     * used in order. If using the first argument is successful, the second
     * one will not be used.
     * 

* This method is package private so that this code can be shared. * * @return the Class object of the specified message factory; * may not be null * * @param factoryId the name of the factory to find, which is * a system property * @param fallbackClassName the implementation class name, which is * to be used only if nothing else * is found; null to indicate that * there is no fallback class name * @exception WebServiceException if there is an error */ static Object find(String factoryId, String fallbackClassName) { ClassLoader classLoader; try { classLoader = Thread.currentThread().getContextClassLoader(); } catch (Exception x) { throw new WebServiceException(x.toString(), x); } String serviceId = "META-INF/services/" + factoryId; // try to find services in CLASSPATH try { InputStream is=null; if (classLoader == null) { is=ClassLoader.getSystemResourceAsStream(serviceId); } else { is=classLoader.getResourceAsStream(serviceId); } if( is!=null ) { BufferedReader rd = new BufferedReader(new InputStreamReader(is, "UTF-8")); String factoryClassName = rd.readLine(); rd.close(); if (factoryClassName != null && ! "".equals(factoryClassName)) { return newInstance(factoryClassName, classLoader); } } } catch( Exception ex ) { } // try to read from $java.home/lib/jaxws.properties try { String javah=System.getProperty( "java.home" ); String configFile = javah + File.separator + "lib" + File.separator + "jaxws.properties"; File f=new File( configFile ); if( f.exists()) { Properties props=new Properties(); props.load( new FileInputStream(f)); String factoryClassName = props.getProperty(factoryId); return newInstance(factoryClassName, classLoader); } } catch(Exception ex ) { } // Use the system property try { String systemProp = System.getProperty( factoryId ); if( systemProp!=null) { return newInstance(systemProp, classLoader); } } catch (SecurityException se) { } if (fallbackClassName == null) { throw new WebServiceException( "Provider for " + factoryId + " cannot be found", null); } return newInstance(fallbackClassName, classLoader); } /** * Loads the class, provided that the calling thread has an access to the class being loaded. */ private static Class safeLoadClass(String className, ClassLoader classLoader) throws ClassNotFoundException { try { // make sure that the current thread has an access to the package of the given name. SecurityManager s = System.getSecurityManager(); if (s != null) { int i = className.lastIndexOf('.'); if (i != -1) { s.checkPackageAccess(className.substring(0, i)); } } if (classLoader == null) return Class.forName(className); else return classLoader.loadClass(className); } catch (SecurityException se) { // anyone can access the platform default factory class without permission if (Provider.DEFAULT_JAXWSPROVIDER.equals(className)) return Class.forName(className); throw se; } } }





© 2015 - 2024 Weber Informatics LLC | Privacy Policy