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.proxy.jdbc;
  
  import com.alibaba.druid.filter.FilterChain;
  import com.alibaba.druid.filter.FilterChainImpl;
  
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.io.Reader;
  import java.io.Writer;
  import java.sql.Clob;
  import java.sql.SQLException;
  
  /**
   * @author wenshao [szujobs@hotmail.com]
   */
  public class ClobProxyImpl implements ClobProxy {
      protected final Clob clob;
      protected final ConnectionProxy connection;
  
      protected final DataSourceProxy dataSource;
  
      public ClobProxyImpl(DataSourceProxy dataSource, ConnectionProxy connection, Clob clob) {
          if (clob == null) {
              throw new IllegalArgumentException("clob is null");
          }
  
          this.dataSource = dataSource;
          this.connection = connection;
          this.clob = clob;
      }
  
      public FilterChain createChain() {
          return new FilterChainImpl(dataSource);
      }
  
      public ConnectionProxy getConnectionWrapper() {
          return this.connection;
      }
  
      @Override
      public Clob getRawClob() {
          return clob;
      }
  
      @Override
      public void free() throws SQLException {
          createChain().clob_free(this);
      }
  
      @Override
      public InputStream getAsciiStream() throws SQLException {
          return createChain().clob_getAsciiStream(this);
      }
  
      @Override
      public Reader getCharacterStream() throws SQLException {
          return createChain().clob_getCharacterStream(this);
      }
  
      @Override
      public Reader getCharacterStream(long pos, long length) throws SQLException {
          return createChain().clob_getCharacterStream(this, pos, length);
      }
  
      @Override
      public String getSubString(long pos, int length) throws SQLException {
          return createChain().clob_getSubString(this, pos, length);
      }
  
      @Override
      public long length() throws SQLException {
          return createChain().clob_length(this);
      }
  
      @Override
      public long position(String searchstr, long start) throws SQLException {
          return createChain().clob_position(this, searchstr, start);
      }
  
      @Override
      public long position(Clob searchstr, long start) throws SQLException {
          return createChain().clob_position(this, searchstr, start);
      }
  
      @Override
      public OutputStream setAsciiStream(long pos) throws SQLException {
          return createChain().clob_setAsciiStream(this, pos);
      }
  
      @Override
      public Writer setCharacterStream(long pos) throws SQLException {
          return createChain().clob_setCharacterStream(this, pos);
      }
  
      @Override
      public int setString(long pos, String str) throws SQLException {
          return createChain().clob_setString(this, pos, str);
      }
  
      @Override
      public int setString(long pos, String str, int offset, int len) throws SQLException {
          return createChain().clob_setString(this, pos, str, offset, len);
      }
  
      @Override
      public void truncate(long len) throws SQLException {
          createChain().clob_truncate(this, len);
      }
  
      public String toString() {
          return clob.toString();
      }
  
  }
  