namedimpl.java

Guice是轻量级的依赖注入框架。简而言之

/**
 * Copyright (C) 2006 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.name;

import java.lang.annotation.Annotation;
import com.google.inject.util.Objects;
import com.google.inject.name.Named;

class NamedImpl implements Named {

  final String value;

  public NamedImpl(String value) {
    this.value = Objects.nonNull(value, "name");
  }

  public String value() {
    return this.value;
  }

  public int hashCode() {
    // This is specified in java.lang.Annotation.
    return 127 * "value".hashCode() ^ value.hashCode();
  }

  public boolean equals(Object o) {
    if (!(o instanceof Named)) {
      return false;
    }

    Named other = (Named) o;
    return value.equals(other.value());
  }

  public String toString() {
    return "@" + Named.class.getName() + "(value=" + value + ")";
  }

  public Class<? extends Annotation> annotationType() {
    return Named.class;
  }
}