connection.h
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1 /*
2  * Copyright (C) 2007 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_CONNECTION_H
30 #define TNTDB_ORACLE_CONNECTION_H
31 
33 #include <tntdb/statement.h>
34 #include <oci.h>
35 #include <map>
36 #include <unistd.h>
37 
38 namespace tntdb
39 {
63  namespace oracle
64  {
66  {
67  OCIEnv* envhp; /* the environment handle */
68  OCIServer* srvhp; /* the server handle */
69  OCIError* errhp; /* the error handle */
70  OCISession* usrhp; /* user session handle */
71  OCISvcCtx* svchp; /* the service handle */
72  typedef std::map<std::string, tntdb::Statement> SeqStmtType;
73  SeqStmtType seqStmt;
74  pid_t pid;
75 
76  void logon(const std::string& dblink, const std::string& user, const std::string& password);
77 
78  unsigned transactionActive;
79 
80  public:
81  void checkError(sword ret, const char* function = 0) const;
82 
83  explicit Connection(const char* conninfo);
84  ~Connection();
85 
86  void beginTransaction();
87  void commitTransaction();
88  void rollbackTransaction();
89 
90  size_type execute(const std::string& query);
91  tntdb::Result select(const std::string& query);
92  tntdb::Row selectRow(const std::string& query);
93  tntdb::Value selectValue(const std::string& query);
94  tntdb::Statement prepare(const std::string& query);
95  tntdb::Statement prepareWithLimit(const std::string& query, const std::string& limit, const std::string& offset);
96  void clearStatementCache();
97  bool ping();
98  long lastInsertId(const std::string& name);
99  void lockTable(const std::string& tablename, bool exclusive);
100 
101  OCIEnv* getEnvHandle() const { return envhp; }
102  OCIError* getErrorHandle() const { return errhp; }
103  OCIServer* getSrvHandle() const { return srvhp; }
104  OCISvcCtx* getSvcCtxHandle() const { return svchp; }
105  bool isTransactionActive() const { return transactionActive > 0; }
106  };
107 
108  }
109 }
110 
111 #endif // TNTDB_ORACLE_CONNECTION_H
112