content: package act.db.util;
  
  /*-
   * #%L
   * ACT Framework
   * %%
   * Copyright (C) 2014 - 2017 ActFramework
   * %%
   * 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.
   * #L%
   */
  
  import act.db.DB;
  
  import java.io.Serializable;
  import java.lang.annotation.Annotation;
  
  // Follow the implementation of com.google.inject.name.NamedImpl
  public class DBAnnotation implements DB, Serializable {
  
      private String db;
  
      public DBAnnotation(String db) {
          this.db = db;
      }
  
      @Override
      public String value() {
          return db;
      }
  
      @Override
      public Class<? extends Annotation> annotationType() {
          return DB.class;
      }
  
      @Override
      public int hashCode() {
          // This is specified in java.lang.Annotation.
          return (127 * "value".hashCode()) ^ db.hashCode();
      }
  
      @Override
      public boolean equals(Object o) {
          if (o == this) {
              return true;
          }
          if (!(o instanceof DB)) {
              return false;
          }
  
          DB other = (DB) o;
          return db.equals(other.value());
      }
  
      @Override
      public String toString() {
          return "@" + DB.class.getName() + "(value=" + db + ")";
      }
  
      private static final long serialVersionUID = 0;
  }
  