content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * 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.alibaba.druid.pool.ha.selector;
  
  import javax.sql.DataSource;
  
  /**
   * Interface for those selector to implement.
   * e.g. Random and Named
   *
   * @author DigitalSonic
   */
  public interface DataSourceSelector {
      /**
       * Return a DataSource according to the implemention.
       */
      DataSource get();
  
      /**
       * Set the target DataSource name to return.
       * Wether to use this or not, it's decided by the implemention.
       */
      void setTarget(String name);
  
      /**
       * Return the name of this DataSourceSelector.
       * e.g. byName
       */
      String getName();
  
      /**
       * Init the DataSourceSelector before use it.
       */
      void init();
  
      /**
       * Destroy the DataSourceSelector, maybe interrupt the Thread.
       */
      void destroy();
  }
  