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1   /**
2    *    Copyright 2009-2015 the original author or authors.
3    *
4    *    Licensed under the Apache License, Version 2.0 (the "License");
5    *    you may not use this file except in compliance with the License.
6    *    You may obtain a copy of the License at
7    *
8    *       http://www.apache.org/licenses/LICENSE-2.0
9    *
10   *    Unless required by applicable law or agreed to in writing, software
11   *    distributed under the License is distributed on an "AS IS" BASIS,
12   *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   *    See the License for the specific language governing permissions and
14   *    limitations under the License.
15   */
16  package org.apache.ibatis.type;
17  
18  import java.io.StringReader;
19  import java.sql.CallableStatement;
20  import java.sql.Clob;
21  import java.sql.PreparedStatement;
22  import java.sql.ResultSet;
23  import java.sql.SQLException;
24  
25  /**
26   * @author Clinton Begin
27   */
28  public class ClobTypeHandler extends BaseTypeHandler<String> {
29  
30    @Override
31    public void setNonNullParameter(PreparedStatement ps, int i, String parameter, JdbcType jdbcType)
32        throws SQLException {
33      StringReader reader = new StringReader(parameter);
34      ps.setCharacterStream(i, reader, parameter.length());
35    }
36  
37    @Override
38    public String getNullableResult(ResultSet rs, String columnName)
39        throws SQLException {
40      String value = "";
41      Clob clob = rs.getClob(columnName);
42      if (clob != null) {
43        int size = (int) clob.length();
44        value = clob.getSubString(1, size);
45      }
46      return value;
47    }
48  
49    @Override
50    public String getNullableResult(ResultSet rs, int columnIndex)
51        throws SQLException {
52      String value = "";
53      Clob clob = rs.getClob(columnIndex);
54      if (clob != null) {
55        int size = (int) clob.length();
56        value = clob.getSubString(1, size);
57      }
58      return value;
59    }
60  
61    @Override
62    public String getNullableResult(CallableStatement cs, int columnIndex)
63        throws SQLException {
64      String value = "";
65      Clob clob = cs.getClob(columnIndex);
66      if (clob != null) {
67        int size = (int) clob.length();
68        value = clob.getSubString(1, size);
69      }
70      return value;
71    }
72  }