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.mock;
  
  import java.io.*;
  import java.sql.Clob;
  import java.sql.SQLException;
  
  public class MockClob implements Clob {
      private byte[] bytes;
      private ByteArrayOutputStream out = new ByteArrayOutputStream();
  
      public MockClob() {
          this(new byte[0]);
      }
  
      public MockClob(byte[] bytes) {
          this.bytes = bytes;
      }
  
      @Override
      public long length() throws SQLException {
          return bytes.length;
      }
  
      @Override
      public String getSubString(long pos, int length) throws SQLException {
          return new String(bytes, (int) (pos - 1), length);
      }
  
      @Override
      public Reader getCharacterStream() throws SQLException {
          return null;
      }
  
      @Override
      public InputStream getAsciiStream() throws SQLException {
          return new ByteArrayInputStream(bytes);
      }
  
      @Override
      public long position(String searchstr, long start) throws SQLException {
          if (bytes.length == 0) {
              return 0;
          }
  
          return new String(bytes).indexOf(searchstr);
      }
  
      @Override
      public long position(Clob searchstr, long start) throws SQLException {
          return 0;
      }
  
      @Override
      public int setString(long pos, String str) throws SQLException {
          return 0;
      }
  
      @Override
      public int setString(long pos, String str, int offset, int len) throws SQLException {
          return 0;
      }
  
      @Override
      public OutputStream setAsciiStream(long pos) throws SQLException {
          return out;
      }
  
      @Override
      public Writer setCharacterStream(long pos) throws SQLException {
          return null;
      }
  
      @Override
      public void truncate(long len) throws SQLException {
      }
  
      @Override
      public void free() throws SQLException {
      }
  
      @Override
      public Reader getCharacterStream(long pos, long length) throws SQLException {
          return null;
      }
  }
  