/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright (c) 2012-2017 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 * http://glassfish.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 org.glassfish.jersey.internal.inject; import java.util.Iterator; import javax.ws.rs.WebApplicationException; import org.glassfish.jersey.internal.LocalizationMessages; import org.glassfish.jersey.internal.ServiceFinder; /** * Injection binding utility methods. * * @author Tom Beerbower * @author Marek Potociar (marek.potociar at oracle.com) */ public class Injections { /** * Creates a {@link InjectionManager} without parent and initial binder. * * @return a injection manager with all the bindings. */ public static InjectionManager createInjectionManager() { return lookupInjectionManagerFactory().create(); } /** * Creates a {@link InjectionManager} with initial binder that is immediately registered. * * @param binder custom the {@link Binder binder}. * @return a injection manager with all the bindings. */ public static InjectionManager createInjectionManager(Binder binder) { InjectionManagerFactory injectionManagerFactory = lookupInjectionManagerFactory(); InjectionManager injectionManager = injectionManagerFactory.create(); injectionManager.register(binder); return injectionManager; } /** * Creates an unnamed, parented {@link InjectionManager}. In case the {@code parent} injection manager is not specified, the * locator will not be parented. * * @param parent The parent of this injection manager. Services can be found in the parent (and all grand-parents). May be * {@code null}. An underlying DI provider checks whether the parent is in a proper type. * @return an injection manager with all the bindings. */ public static InjectionManager createInjectionManager(Object parent) { return lookupInjectionManagerFactory().create(parent); } private static InjectionManagerFactory lookupInjectionManagerFactory() { Iterator<InjectionManagerFactory> iterator = ServiceFinder.find(InjectionManagerFactory.class).iterator(); if (iterator.hasNext()) { return iterator.next(); } else { throw new IllegalStateException(LocalizationMessages.INJECTION_MANAGER_FACTORY_NOT_FOUND()); } } /** * Get the class by contract or create and inject a new instance. * * @param <T> instance type. * @param injectionManager DI injection manager. * @param clazz class of the instance to be provider. * @return instance of the class either provided as a service or created and injected by HK2. */ public static <T> T getOrCreate(InjectionManager injectionManager, final Class<T> clazz) { try { final T component = injectionManager.getInstance(clazz); return component == null ? injectionManager.createAndInitialize(clazz) : component; } catch (final RuntimeException e) { // Look for WebApplicationException and return it if found. MultiException is thrown when *Param field is // annotated and value cannot be provided (for example fromString(String) method can throw unchecked // exception. // // see InvalidParamTest // see JERSEY-1117 Throwable throwable = e.getCause(); if (throwable != null && WebApplicationException.class.isAssignableFrom(throwable.getClass())) { throw (WebApplicationException) throwable; } throw e; } } }