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.filter.stat;
  
  import java.util.List;
  import java.util.concurrent.CopyOnWriteArrayList;
  
  public class StatFilterContext {
      private List<StatFilterContextListener> listeners = new CopyOnWriteArrayList<StatFilterContextListener>();
  
      private static final StatFilterContext instance = new StatFilterContext();
  
      public static final StatFilterContext getInstance() {
          return instance;
      }
  
      public void addContextListener(StatFilterContextListener listener) {
          this.listeners.add(listener);
      }
  
      public boolean removeContextListener(StatFilterContextListener listener) {
          return listeners.remove(listener);
      }
  
      public List<StatFilterContextListener> getListeners() {
          return listeners;
      }
  
      public void addUpdateCount(int updateCount) {
          for (int i = 0; i < listeners.size(); ++i) {
              StatFilterContextListener listener = listeners.get(i);
              listener.addUpdateCount(updateCount);
          }
      }
  
      public void addFetchRowCount(int fetchRowCount) {
          for (int i = 0; i < listeners.size(); ++i) {
              StatFilterContextListener listener = listeners.get(i);
              listener.addFetchRowCount(fetchRowCount);
          }
      }
  
      public void executeBefore(String sql, boolean inTransaction) {
          for (int i = 0; i < listeners.size(); ++i) {
              StatFilterContextListener listener = listeners.get(i);
              listener.executeBefore(sql, inTransaction);
          }
      }
  
      public void executeAfter(String sql, long nanoSpan, Throwable error) {
          for (int i = 0; i < listeners.size(); ++i) {
              StatFilterContextListener listener = listeners.get(i);
              listener.executeAfter(sql, nanoSpan, error);
          }
      }
  
      public void commit() {
          for (int i = 0; i < listeners.size(); ++i) {
              StatFilterContextListener listener = listeners.get(i);
              listener.commit();
          }
      }
  
      public void rollback() {
          for (int i = 0; i < listeners.size(); ++i) {
              StatFilterContextListener listener = listeners.get(i);
              listener.rollback();
          }
      }
  
      public void pool_connection_open() {
          for (int i = 0; i < listeners.size(); ++i) {
              StatFilterContextListener listener = listeners.get(i);
              listener.pool_connect();
          }
      }
  
      public void pool_connection_close(long nanos) {
          for (int i = 0; i < listeners.size(); ++i) {
              StatFilterContextListener listener = listeners.get(i);
              listener.pool_close(nanos);
          }
      }
  
      public void physical_connection_connect() {
          for (int i = 0; i < listeners.size(); ++i) {
              StatFilterContextListener listener = listeners.get(i);
              listener.physical_connection_connect();
          }
      }
  
      public void physical_connection_close(long nanos) {
          for (int i = 0; i < listeners.size(); ++i) {
              StatFilterContextListener listener = listeners.get(i);
              listener.physical_connection_close(nanos);
          }
      }
  
      public void resultSet_open() {
          for (int i = 0; i < listeners.size(); ++i) {
              StatFilterContextListener listener = listeners.get(i);
              listener.resultSet_open();
          }
      }
  
      public void resultSet_close(long nanos) {
          for (int i = 0; i < listeners.size(); ++i) {
              StatFilterContextListener listener = listeners.get(i);
              listener.resultSet_close(nanos);
          }
      }
  
      public void clob_open() {
          for (int i = 0; i < listeners.size(); ++i) {
              StatFilterContextListener listener = listeners.get(i);
              listener.clob_open();
          }
      }
  
      public void blob_open() {
          for (int i = 0; i < listeners.size(); ++i) {
              StatFilterContextListener listener = listeners.get(i);
              listener.blob_open();
          }
      }
  
  }
  