/*
    *    Copyright 2009-2024 the original author or authors.
    *
    *    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
    *
    *       https://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 org.apache.ibatis.type;
  
  import java.io.ByteArrayInputStream;
  import java.sql.Blob;
  import java.sql.CallableStatement;
  import java.sql.PreparedStatement;
  import java.sql.ResultSet;
  import java.sql.SQLException;
  
  /**
   * @author Clinton Begin
   */
  public class BlobTypeHandler extends BaseTypeHandler<byte[]> {
  
    @Override
    public void setNonNullParameter(PreparedStatement ps, int i, byte[] parameter, JdbcType jdbcType)
        throws SQLException {
      ByteArrayInputStream bis = new ByteArrayInputStream(parameter);
      ps.setBinaryStream(i, bis, parameter.length);
    }
  
    @Override
    public byte[] getNullableResult(ResultSet rs, String columnName) throws SQLException {
      return toPrimitiveBytes(rs.getBlob(columnName));
    }
  
    @Override
    public byte[] getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
      return toPrimitiveBytes(rs.getBlob(columnIndex));
    }
  
    @Override
    public byte[] getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
      return toPrimitiveBytes(cs.getBlob(columnIndex));
    }
  
    private byte[] toPrimitiveBytes(Blob blob) throws SQLException {
      return blob == null ? null : blob.getBytes(1, (int) blob.length());
    }
  }