1 /** 2 * Copyright (C) 2008 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.inject.internal; 18 19 import com.google.common.base.Objects; 20 import com.google.common.collect.ImmutableSet; 21 import com.google.inject.Binder; 22 import com.google.inject.Injector; 23 import com.google.inject.Key; 24 import com.google.inject.spi.BindingTargetVisitor; 25 import com.google.inject.spi.Dependency; 26 import com.google.inject.spi.ExposedBinding; 27 import com.google.inject.spi.PrivateElements; 28 29 import java.util.Set; 30 31 public final class ExposedBindingImpl<T> extends BindingImpl<T> implements ExposedBinding<T> { 32 33 private final PrivateElements privateElements; 34 35 public ExposedBindingImpl(InjectorImpl injector, Object source, Key<T> key, 36 InternalFactory<T> factory, PrivateElements privateElements) { 37 super(injector, key, source, factory, Scoping.UNSCOPED); 38 this.privateElements = privateElements; 39 } 40 41 public <V> V acceptTargetVisitor(BindingTargetVisitor<? super T, V> visitor) { 42 return visitor.visit(this); 43 } 44 45 public Set<Dependency<?>> getDependencies() { 46 return ImmutableSet.<Dependency<?>>of(Dependency.get(Key.get(Injector.class))); 47 } 48 49 public PrivateElements getPrivateElements() { 50 return privateElements; 51 } 52 53 @Override public String toString() { 54 return Objects.toStringHelper(ExposedBinding.class) 55 .add("key", getKey()) 56 .add("source", getSource()) 57 .add("privateElements", privateElements) 58 .toString(); 59 } 60 61 public void applyTo(Binder binder) { 62 throw new UnsupportedOperationException("This element represents a synthetic binding."); 63 } 64 65 // Purposely does not override equals/hashcode, because exposed bindings are only equal to 66 // themselves right now -- that is, there cannot be "duplicate" exposed bindings. 67 } 68
