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Java example source code file (InjectionPlan.java)
The InjectionPlan.java Java example source code/* * Copyright (c) 1997, 2012, 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.xml.internal.ws.util; import java.lang.reflect.Field; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.lang.reflect.Modifier; import java.security.AccessController; import java.security.PrivilegedAction; import java.util.ArrayList; import java.util.Collection; import java.util.List; import java.util.concurrent.Callable; import javax.annotation.Resource; import javax.xml.ws.WebServiceException; /** * Encapsulates which field/method the injection is done, and performs the * injection. */ public abstract class InjectionPlan<T, R> { /** * Perform injection * * @param instance * Instance * @param resource * Resource */ public abstract void inject(T instance, R resource); /** * Perform injection, but resource is only generated if injection is * necessary. * * @param instance * @param resource */ public void inject(T instance, Callable<R> resource) { try { inject(instance, resource.call()); } catch(Exception e) { throw new WebServiceException(e); } } /* * Injects to a field. */ public static class FieldInjectionPlan<T, R> extends InjectionPlan<T, R> { private final Field field; public FieldInjectionPlan(Field field) { this.field = field; } public void inject(final T instance, final R resource) { AccessController.doPrivileged(new PrivilegedAction<Object>() { public Object run() { try { if (!field.isAccessible()) { field.setAccessible(true); } field.set(instance, resource); return null; } catch (IllegalAccessException e) { throw new WebServiceException(e); } } }); } } /* * Injects to a method. */ public static class MethodInjectionPlan<T, R> extends InjectionPlan<T, R> { private final Method method; public MethodInjectionPlan(Method method) { this.method = method; } public void inject(T instance, R resource) { invokeMethod(method, instance, resource); } } /* * Helper for invoking a method with elevated privilege. */ private static void invokeMethod(final Method method, final Object instance, final Object... args) { if(method==null) return; AccessController.doPrivileged(new PrivilegedAction<Void>() { public Void run() { try { if (!method.isAccessible()) { method.setAccessible(true); } method.invoke(instance,args); } catch (IllegalAccessException e) { throw new WebServiceException(e); } catch (InvocationTargetException e) { throw new WebServiceException(e); } return null; } }); } /* * Combines multiple {@link InjectionPlan}s into one. */ private static class Compositor<T, R> extends InjectionPlan Other Java examples (source code examples)Here is a short list of links related to this Java InjectionPlan.java source code file: |
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