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1   /*
2    *
3    * The DbUnit Database Testing Framework
4    * Copyright (C)2002-2004, DbUnit.org
5    *
6    * This library is free software; you can redistribute it and/or
7    * modify it under the terms of the GNU Lesser General Public
8    * License as published by the Free Software Foundation; either
9    * version 2.1 of the License, or (at your option) any later version.
10   *
11   * This library is distributed in the hope that it will be useful,
12   * but WITHOUT ANY WARRANTY; without even the implied warranty of
13   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14   * Lesser General Public License for more details.
15   *
16   * You should have received a copy of the GNU Lesser General Public
17   * License along with this library; if not, write to the Free Software
18   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19   *
20   */
21  package org.dbunit.ext.oracle;
22  
23  import java.sql.Types;
24  
25  import org.dbunit.dataset.datatype.BinaryStreamDataType;
26  import org.dbunit.dataset.datatype.DataType;
27  import org.dbunit.dataset.datatype.DataTypeException;
28  import org.dbunit.dataset.datatype.StringDataType;
29  import org.slf4j.Logger;
30  import org.slf4j.LoggerFactory;
31  
32  /**
33   * Specialized factory that recognizes Oracle data types for Oracle 10 and higher.
34   * <br>
35   * Handles the CLOBs and BLOBs as string and binary stream respectively which is supported
36   * since oracle 10.
37   * <br>
38   * This is recommended by oracle: 
39   * <a href="http://www.oracle.com/technology/sample_code/tech/java/codesnippet/jdbc/clob10g/handlingclobsinoraclejdbc10g.html">
40   * Oracle technology sample code</a>
41   * 
42   * @author gommma
43   * @since 2.3.0
44   * @version $Revision$
45   */
46  public class Oracle10DataTypeFactory extends OracleDataTypeFactory
47  {
48      /**
49       * Logger for this class
50       */
51      private static final Logger logger = LoggerFactory.getLogger(Oracle10DataTypeFactory.class);
52  
53  	
54      protected static final DataType CLOB_AS_STRING = new StringDataType("CLOB", Types.CLOB);
55      protected static final DataType BLOB_AS_STREAM = new BinaryStreamDataType("BLOB", Types.BLOB);
56  
57      public DataType createDataType(int sqlType, String sqlTypeName) throws DataTypeException
58      {
59      	if(logger.isDebugEnabled())
60      		logger.debug("createDataType(sqlType={}, sqlTypeName={}) - start", String.valueOf(sqlType), sqlTypeName);
61      	
62          // BLOB
63          if ("BLOB".equals(sqlTypeName))
64          {
65              return BLOB_AS_STREAM;
66          }
67  
68          // CLOB
69          if ("CLOB".equals(sqlTypeName))
70          {
71              return CLOB_AS_STRING;
72          }
73          return super.createDataType(sqlType, sqlTypeName);
74      }
75  }