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;
  
  import java.sql.Wrapper;
  
  public class WrapperAdapter implements Wrapper {
      public WrapperAdapter() {
      }
  
      @Override
      public boolean isWrapperFor(Class<?> iface) {
          return iface != null && iface.isInstance(this);
  
      }
  
      @SuppressWarnings("unchecked")
      @Override
      public <T> T unwrap(Class<T> iface) {
          if (iface == null) {
              return null;
          }
  
          if (iface.isInstance(this)) {
              return (T) this;
          }
  
          return null;
      }
  
  }
  