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/*
 * 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 [email protected] (Jesse Wilson)
 */
final class ConstructorInjectorStore {
  private final InjectorImpl injector;

  private final FailableCache> cache =
      new FailableCache>() {
        @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 ConstructorInjector 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 membersInjector = (MembersInjectorImpl) injector.membersInjectorStore.get(injectionPoint.getDeclaringType(), errors); /*if[AOP]*/ ImmutableList injectorAspects = injector.state.getMethodAspects(); ImmutableList methodAspects = membersInjector.getAddedAspects().isEmpty() ? injectorAspects : ImmutableList.copyOf(concat(injectorAspects, membersInjector.getAddedAspects())); ConstructionProxyFactory factory = new ProxyFactory<>(injectionPoint, methodAspects); /*end[AOP]*/ /*if[NO_AOP] ConstructionProxyFactory factory = new DefaultConstructionProxyFactory<>(injectionPoint); end[NO_AOP]*/ errors.throwIfNewErrors(numErrorsBefore); return new ConstructorInjector( membersInjector.getInjectionPoints(), factory.create(), constructorParameterInjectors, membersInjector); } }





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