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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.postgresql;
22  
23  import java.lang.reflect.Constructor;
24  import java.lang.reflect.InvocationTargetException;
25  import java.lang.reflect.Method;
26  import java.sql.Connection;
27  import java.sql.PreparedStatement;
28  import java.sql.ResultSet;
29  import java.sql.SQLException;
30  import java.sql.Types;
31  
32  import org.dbunit.dataset.datatype.AbstractDataType;
33  import org.dbunit.dataset.datatype.TypeCastException;
34  import org.slf4j.Logger;
35  import org.slf4j.LoggerFactory;
36  
37  /**
38   * Adapter to handle conversion between Postgresql
39   * native UUID type and Strings.
40   *
41   * @author Jarvis Cochrane (jarvis@cochrane.com.au)
42   * @author Last changed by: $Author$
43   * @since Apr 27, 2009
44   */
45  public class UuidType
46          extends AbstractDataType {
47  
48      /**
49       * Logger for this class
50       */
51      private static final Logger logger = LoggerFactory.getLogger(UuidType.class);
52  
53      public UuidType() {
54          super("uuid", Types.OTHER, String.class, false);
55      }
56  
57      public Object getSqlValue(int column, ResultSet resultSet) throws SQLException, TypeCastException {
58          return resultSet.getString(column);
59      }
60  
61      public void setSqlValue(Object uuid, int column,
62                              PreparedStatement statement) throws SQLException, TypeCastException {
63          statement.setObject(column, getUUID(uuid, statement.getConnection()));
64      }
65  
66      public Object typeCast(Object arg0) throws TypeCastException {
67          return arg0.toString();
68      }
69  
70      private Object getUUID(Object value, Connection connection) throws TypeCastException {
71  
72          logger.debug("getUUID(value={}, connection={}) - start", value, connection);
73  
74          Object tempUUID = null;
75  
76          try {
77              Class aPGObjectClass = super.loadClass("org.postgresql.util.PGobject", connection);
78              Constructor ct = aPGObjectClass.getConstructor(null);
79              tempUUID = ct.newInstance(null);
80  
81              Method setTypeMethod = aPGObjectClass.getMethod("setType", new Class[]{String.class});
82              setTypeMethod.invoke(tempUUID, new Object[]{"uuid"});
83  
84              Method setValueMethod = aPGObjectClass.getMethod("setValue", new Class[]{String.class});
85              setValueMethod.invoke(tempUUID, new Object[]{value.toString()});
86  
87          } catch (ClassNotFoundException e) {
88              throw new TypeCastException(value, this, e);
89          } catch (InvocationTargetException e) {
90              throw new TypeCastException(value, this, e);
91          } catch (NoSuchMethodException e) {
92              throw new TypeCastException(value, this, e);
93          } catch (IllegalAccessException e) {
94              throw new TypeCastException(value, this, e);
95          } catch (InstantiationException e) {
96              throw new TypeCastException(value, this, e);
97          }
98  
99          return tempUUID;
100     }
101 }