| /** |
| * 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 com.google.inject.Key; |
| import com.google.inject.MembersInjector; |
| import com.google.inject.Provider; |
| import com.google.inject.TypeLiteral; |
| import com.google.inject.internal.util.ImmutableList; |
| import com.google.inject.internal.util.Lists; |
| import static com.google.inject.internal.util.Preconditions.checkState; |
| import com.google.inject.matcher.Matcher; |
| import com.google.inject.matcher.Matchers; |
| import com.google.inject.spi.InjectionListener; |
| import com.google.inject.spi.Message; |
| import com.google.inject.spi.TypeEncounter; |
| import java.lang.reflect.Method; |
| import java.util.List; |
| |
| /** |
| * @author jessewilson@google.com (Jesse Wilson) |
| */ |
| final class EncounterImpl<T> implements TypeEncounter<T> { |
| |
| private final Errors errors; |
| private final Lookups lookups; |
| private List<MembersInjector<? super T>> membersInjectors; // lazy |
| private List<InjectionListener<? super T>> injectionListeners; // lazy |
| /*if[AOP]*/ |
| private List<MethodAspect> aspects; // lazy |
| /*end[AOP]*/ |
| private boolean valid = true; |
| |
| EncounterImpl(Errors errors, Lookups lookups) { |
| this.errors = errors; |
| this.lookups = lookups; |
| } |
| |
| void invalidate() { |
| valid = false; |
| } |
| |
| /*if[AOP]*/ |
| ImmutableList<MethodAspect> getAspects() { |
| return aspects == null |
| ? ImmutableList.<MethodAspect>of() |
| : ImmutableList.copyOf(aspects); |
| } |
| |
| public void bindInterceptor(Matcher<? super Method> methodMatcher, |
| org.aopalliance.intercept.MethodInterceptor... interceptors) { |
| checkState(valid, "Encounters may not be used after hear() returns."); |
| |
| // make sure the applicable aspects is mutable |
| if (aspects == null) { |
| aspects = Lists.newArrayList(); |
| } |
| |
| aspects.add(new MethodAspect(Matchers.any(), methodMatcher, interceptors)); |
| } |
| /*end[AOP]*/ |
| |
| ImmutableList<MembersInjector<? super T>> getMembersInjectors() { |
| return membersInjectors == null |
| ? ImmutableList.<MembersInjector<? super T>>of() |
| : ImmutableList.copyOf(membersInjectors); |
| } |
| |
| ImmutableList<InjectionListener<? super T>> getInjectionListeners() { |
| return injectionListeners == null |
| ? ImmutableList.<InjectionListener<? super T>>of() |
| : ImmutableList.copyOf(injectionListeners); |
| } |
| |
| public void register(MembersInjector<? super T> membersInjector) { |
| checkState(valid, "Encounters may not be used after hear() returns."); |
| |
| if (membersInjectors == null) { |
| membersInjectors = Lists.newArrayList(); |
| } |
| |
| membersInjectors.add(membersInjector); |
| } |
| |
| public void register(InjectionListener<? super T> injectionListener) { |
| checkState(valid, "Encounters may not be used after hear() returns."); |
| |
| if (injectionListeners == null) { |
| injectionListeners = Lists.newArrayList(); |
| } |
| |
| injectionListeners.add(injectionListener); |
| } |
| |
| public void addError(String message, Object... arguments) { |
| checkState(valid, "Encounters may not be used after hear() returns."); |
| errors.addMessage(message, arguments); |
| } |
| |
| public void addError(Throwable t) { |
| checkState(valid, "Encounters may not be used after hear() returns."); |
| errors.errorInUserCode(t, "An exception was caught and reported. Message: %s", t.getMessage()); |
| } |
| |
| public void addError(Message message) { |
| checkState(valid, "Encounters may not be used after hear() returns."); |
| errors.addMessage(message); |
| } |
| |
| public <T> Provider<T> getProvider(Key<T> key) { |
| checkState(valid, "Encounters may not be used after hear() returns."); |
| return lookups.getProvider(key); |
| } |
| |
| public <T> Provider<T> getProvider(Class<T> type) { |
| return getProvider(Key.get(type)); |
| } |
| |
| public <T> MembersInjector<T> getMembersInjector(TypeLiteral<T> typeLiteral) { |
| checkState(valid, "Encounters may not be used after hear() returns."); |
| return lookups.getMembersInjector(typeLiteral); |
| } |
| |
| public <T> MembersInjector<T> getMembersInjector(Class<T> type) { |
| return getMembersInjector(TypeLiteral.get(type)); |
| } |
| } |