| /** |
| * Copyright (C) 2009 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; |
| |
| import com.google.inject.internal.Errors; |
| import com.google.inject.internal.ErrorsException; |
| import com.google.inject.internal.FailableCache; |
| import com.google.inject.internal.ImmutableList; |
| import com.google.inject.internal.ImmutableSet; |
| import static com.google.inject.internal.Iterables.concat; |
| import com.google.inject.spi.InjectableType; |
| import com.google.inject.spi.InjectableTypeListenerBinding; |
| import com.google.inject.spi.InjectionPoint; |
| import java.util.List; |
| |
| /** |
| * Constructor injectors by type. |
| * |
| * @author jessewilson@google.com (Jesse Wilson) |
| */ |
| class ConstructorInjectorStore { |
| private final InjectorImpl injector; |
| private final ImmutableList<InjectableTypeListenerBinding> injectableTypeListenerBindings; |
| |
| private final FailableCache<TypeLiteral<?>, ConstructorInjector<?>> cache |
| = new FailableCache<TypeLiteral<?>, ConstructorInjector<?>> () { |
| @SuppressWarnings("unchecked") |
| protected ConstructorInjector<?> create(TypeLiteral<?> type, Errors errors) |
| throws ErrorsException { |
| return createConstructor(type, errors); |
| } |
| }; |
| |
| ConstructorInjectorStore(InjectorImpl injector, |
| List<InjectableTypeListenerBinding> injectableTypeListenerBindings) { |
| this.injector = injector; |
| this.injectableTypeListenerBindings = ImmutableList.copyOf(injectableTypeListenerBindings); |
| } |
| |
| /** |
| * Returns a new complete constructor injector with injection listeners registered. |
| */ |
| @SuppressWarnings("unchecked") // the ConstructorInjector type always agrees with the passed type |
| public <T> ConstructorInjector<T> get(TypeLiteral<T> key, Errors errors) throws ErrorsException { |
| return (ConstructorInjector<T>) cache.get(key, errors); |
| } |
| |
| private <T> ConstructorInjector<T> createConstructor(TypeLiteral<T> type, Errors errors) |
| throws ErrorsException { |
| int numErrorsBefore = errors.size(); |
| |
| InjectionPoint injectionPoint; |
| try { |
| injectionPoint = InjectionPoint.forConstructorOf(type); |
| } catch (ConfigurationException e) { |
| errors.merge(e.getErrorMessages()); |
| throw errors.toException(); |
| } |
| |
| ImmutableList<SingleParameterInjector<?>> constructorParameterInjectors |
| = injector.getParametersInjectors(injectionPoint.getDependencies(), errors); |
| MembersInjectorImpl<T> membersInjector |
| = injector.membersInjectorStore.createWithoutListeners(type, errors); |
| |
| ImmutableSet<InjectionPoint> injectableMembers = membersInjector.getInjectionPoints(); |
| |
| ProxyFactory<T> proxyFactory = new ProxyFactory<T>(injectionPoint, injector.methodAspects); |
| EncounterImpl<T> encounter = new EncounterImpl<T>(); |
| InjectableType<T> injectableType = new InjectableType<T>( |
| injectionPoint, type, injectableMembers, proxyFactory.getInterceptors()); |
| |
| for (InjectableTypeListenerBinding typeListener : injectableTypeListenerBindings) { |
| if (typeListener.getTypeMatcher().matches(type)) { |
| try { |
| typeListener.getListener().hear(injectableType, encounter); |
| } catch (RuntimeException e) { |
| errors.errorNotifyingTypeListener(typeListener, injectableType, e); |
| } |
| } |
| } |
| |
| // rebuild the proxy factory and injectable type if new interceptors were added |
| if (encounter.hasAddedAspects()) { |
| proxyFactory = new ProxyFactory<T>( |
| injectionPoint, concat(injector.methodAspects, encounter.getAspects())); |
| injectableType = new InjectableType<T>( |
| injectionPoint, type, injectableMembers, proxyFactory.getInterceptors()); |
| } |
| |
| errors.throwIfNewErrors(numErrorsBefore); |
| |
| return new ConstructorInjector<T>(proxyFactory.create(), constructorParameterInjectors, |
| membersInjector, encounter.getInjectionListeners(), injectableType); |
| } |
| } |