blob.h
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1 /*
2  * Copyright (C) 2008 Tommi Maekitalo
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * As a special exception, you may use this file as part of a free
10  * software library without restriction. Specifically, if other files
11  * instantiate templates or use macros or inline functions from this
12  * file, or you compile this file and link it with other files to
13  * produce an executable, this file does not by itself cause the
14  * resulting executable to be covered by the GNU General Public
15  * License. This exception does not however invalidate any other
16  * reasons why the executable file might be covered by the GNU Library
17  * General Public License.
18  *
19  * This library is distributed in the hope that it will be useful,
20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22  * Lesser General Public License for more details.
23  *
24  * You should have received a copy of the GNU Lesser General Public
25  * License along with this library; if not, write to the Free Software
26  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27  */
28 
29 #ifndef TNTDB_ORACLE_BLOB_H
30 #define TNTDB_ORACLE_BLOB_H
31 
32 #include <tntdb/datetime.h>
33 #include <tntdb/date.h>
34 #include <tntdb/time.h>
35 #include <tntdb/blob.h>
36 #include <cxxtools/smartptr.h>
38 #include <oci.h>
39 
40 namespace tntdb
41 {
42  namespace oracle
43  {
44  class Blob
45  {
47  OCILobLocator* lob;
48  bool release;
49 
50  // low-level wrappers
51  void ociDescriptorAlloc();
52  void ociDescriptorFree();
53 
54  Blob(const Blob&) { }
55  Blob& operator=(const Blob&) { return *this; }
56 
57  public:
58  Blob() : lob(0), release(false) { }
59  Blob(Connection* conn, OCILobLocator* lob, bool release = false);
60  Blob(Connection* conn, const char* data, ub4 count);
61 
63  {
64  if (release && lob)
65  ociDescriptorFree();
66  }
67 
68  void allocateHandle();
69  void setData(Connection* conn, const char* data, ub4 count);
70  void getData(tntdb::Blob& ret) const;
71 
72  OCILobLocator*& getHandle(Connection* conn);
73  };
74 
75  }
76 }
77 
78 #endif // TNTDB_ORACLE_BLOB_H
79