| /** |
| * 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.internal; |
| |
| import static com.google.common.collect.Iterables.concat; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.inject.spi.InjectionPoint; |
| |
| /** |
| * Constructor injectors by type. |
| * |
| * @author jessewilson@google.com (Jesse Wilson) |
| */ |
| final class ConstructorInjectorStore { |
| private final InjectorImpl injector; |
| |
| private final FailableCache<InjectionPoint, ConstructorInjector<?>> cache |
| = new FailableCache<InjectionPoint, ConstructorInjector<?>> () { |
| @Override |
| protected ConstructorInjector<?> create(InjectionPoint constructorInjector, Errors errors) |
| throws ErrorsException { |
| return createConstructor(constructorInjector, errors); |
| } |
| }; |
| |
| ConstructorInjectorStore(InjectorImpl injector) { |
| this.injector = injector; |
| } |
| |
| /** |
| * Returns a new complete constructor injector with injection listeners registered. |
| */ |
| public ConstructorInjector<?> get(InjectionPoint constructorInjector, Errors errors) |
| throws ErrorsException { |
| return cache.get(constructorInjector, errors); |
| } |
| |
| /** |
| * Purges an injection point from the cache. Use this only if the cache is not actually valid and |
| * needs to be purged. (See issue 319 and |
| * ImplicitBindingTest#testCircularJitBindingsLeaveNoResidue and |
| * #testInstancesRequestingProvidersForThemselvesWithChildInjectors for examples of when this is |
| * necessary.) |
| * |
| * Returns true if the injector for that point was stored in the cache, false otherwise. |
| */ |
| boolean remove(InjectionPoint ip) { |
| return cache.remove(ip); |
| } |
| |
| private <T> ConstructorInjector<T> createConstructor(InjectionPoint injectionPoint, Errors errors) |
| throws ErrorsException { |
| int numErrorsBefore = errors.size(); |
| |
| SingleParameterInjector<?>[] constructorParameterInjectors |
| = injector.getParametersInjectors(injectionPoint.getDependencies(), errors); |
| |
| @SuppressWarnings("unchecked") // the injector type agrees with the injection point type |
| MembersInjectorImpl<T> membersInjector = (MembersInjectorImpl<T>) injector.membersInjectorStore |
| .get(injectionPoint.getDeclaringType(), errors); |
| |
| /*if[AOP]*/ |
| ImmutableList<MethodAspect> injectorAspects = injector.state.getMethodAspects(); |
| ImmutableList<MethodAspect> methodAspects = membersInjector.getAddedAspects().isEmpty() |
| ? injectorAspects |
| : ImmutableList.copyOf(concat(injectorAspects, membersInjector.getAddedAspects())); |
| ConstructionProxyFactory<T> factory = new ProxyFactory<T>(injectionPoint, methodAspects); |
| /*end[AOP]*/ |
| /*if[NO_AOP] |
| ConstructionProxyFactory<T> factory = new DefaultConstructionProxyFactory<T>(injectionPoint); |
| end[NO_AOP]*/ |
| |
| errors.throwIfNewErrors(numErrorsBefore); |
| |
| return new ConstructorInjector<T>(membersInjector.getInjectionPoints(), factory.create(), |
| constructorParameterInjectors, membersInjector); |
| } |
| } |