com.google.inject.grapher.BindingEdge Maven / Gradle / Ivy
/**
* Copyright (C) 2008 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.grapher;
import com.google.common.base.Objects;
/**
* Edge that connects an interface to the type or instance that is bound to implement it.
*
* @author [email protected] (Pete Hopkins)
* @since 4.0 (since 2.0 as an interface)
*/
public class BindingEdge extends Edge {
/**
* Classification for what kind of binding this edge represents.
*/
public enum Type {
/** Binding is to an instance or class of the binding's same type. */
NORMAL,
/** Binding is to an instance or class that provides the binding's type. */
PROVIDER,
/** Binding is to the interface for a constant of a different type. */
CONVERTED_CONSTANT
}
private final Type type;
public BindingEdge(NodeId fromId, NodeId toId, Type type) {
super(fromId, toId);
this.type = type;
}
public Type getType() {
return type;
}
@Override public boolean equals(Object obj) {
if (!(obj instanceof BindingEdge)) {
return false;
}
BindingEdge other = (BindingEdge) obj;
return super.equals(other) && Objects.equal(type, other.type);
}
@Override public int hashCode() {
return 31 * super.hashCode() + Objects.hashCode(type);
}
@Override public String toString() {
return "BindingEdge{fromId=" + getFromId() + " toId=" + getToId() + " type=" + type + "}";
}
@Override public Edge copy(NodeId fromId, NodeId toId) {
return new BindingEdge(fromId, toId, type);
}
}