| /** |
| * Copyright (C) 2008 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.google.inject.internal; |
| |
| import com.google.inject.internal.InjectorImpl.JitLimitation; |
| import com.google.inject.spi.Dependency; |
| import com.google.inject.spi.InjectionPoint; |
| import java.lang.reflect.Field; |
| |
| /** |
| * Sets an injectable field. |
| */ |
| final class SingleFieldInjector implements SingleMemberInjector { |
| final Field field; |
| final InjectionPoint injectionPoint; |
| final Dependency<?> dependency; |
| final InternalFactory<?> factory; |
| |
| public SingleFieldInjector(InjectorImpl injector, InjectionPoint injectionPoint, Errors errors) |
| throws ErrorsException { |
| this.injectionPoint = injectionPoint; |
| this.field = (Field) injectionPoint.getMember(); |
| this.dependency = injectionPoint.getDependencies().get(0); |
| |
| // Ewwwww... |
| field.setAccessible(true); |
| factory = injector.getInternalFactory(dependency.getKey(), errors, JitLimitation.NO_JIT); |
| } |
| |
| public InjectionPoint getInjectionPoint() { |
| return injectionPoint; |
| } |
| |
| public void inject(Errors errors, InternalContext context, Object o) { |
| errors = errors.withSource(dependency); |
| |
| Dependency previous = context.setDependency(dependency); |
| try { |
| Object value = factory.get(errors, context, dependency, false); |
| field.set(o, value); |
| } catch (ErrorsException e) { |
| errors.withSource(injectionPoint).merge(e.getErrors()); |
| } catch (IllegalAccessException e) { |
| throw new AssertionError(e); // a security manager is blocking us, we're hosed |
| } finally { |
| context.setDependency(previous); |
| } |
| } |
| } |