OGR
cpl_odbc.h
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1 /******************************************************************************
2  * $Id: cpl_odbc.h 97890c6814b40588defbe147a3189f056d50cf97 2018-05-14 20:12:48 +0200 KovBal $
3  *
4  * Project: OGR ODBC Driver
5  * Purpose: Declarations for ODBC Access Cover API.
6  * Author: Frank Warmerdam, warmerdam@pobox.com
7  *
8  ******************************************************************************
9  * Copyright (c) 2003, Frank Warmerdam
10  *
11  * Permission is hereby granted, free of charge, to any person obtaining a
12  * copy of this software and associated documentation files (the "Software"),
13  * to deal in the Software without restriction, including without limitation
14  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
15  * and/or sell copies of the Software, and to permit persons to whom the
16  * Software is furnished to do so, subject to the following conditions:
17  *
18  * The above copyright notice and this permission notice shall be included
19  * in all copies or substantial portions of the Software.
20  *
21  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
22  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
24  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
26  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
27  * DEALINGS IN THE SOFTWARE.
28  ****************************************************************************/
29 
30 #ifndef CPL_ODBC_H_INCLUDED
31 #define CPL_ODBC_H_INCLUDED
32 
33 #include "cpl_port.h"
34 
35 #ifdef WIN32
36 # include <windows.h>
37 #endif
38 
39 #include <sql.h>
40 #include <sqlext.h>
41 #include <odbcinst.h>
42 #include "cpl_string.h"
43 
45 #ifdef PATH_MAX
46 # define ODBC_FILENAME_MAX PATH_MAX
47 #else
48 # define ODBC_FILENAME_MAX (255 + 1) /* Max path length */
49 #endif
50 
62 {
63  char m_szPathOut[ODBC_FILENAME_MAX];
64  char m_szError[SQL_MAX_MESSAGE_LENGTH];
65  DWORD m_nErrorCode;
66  DWORD m_nUsageCount;
67 
68  public:
69 
70  // Default constructor.
72 
90  int InstallDriver( const char* pszDriver, const char* pszPathIn,
91  WORD fRequest = ODBC_INSTALL_COMPLETE );
92 
109  int RemoveDriver( const char* pszDriverName, int fRemoveDSN = FALSE );
110 
112  int GetUsageCount() const { return m_nUsageCount; }
113 
118  const char* GetPathOut() const { return m_szPathOut; }
119 
124  const char* GetLastError() const { return m_szError; }
125 
131  DWORD GetLastErrorCode() const { return m_nErrorCode; }
132 };
133 
134 class CPLODBCStatement;
135 
136 /* On MSVC SQLULEN is missing in some cases (i.e. VC6)
137 ** but it is always a #define so test this way. On Unix
138 ** it is a typedef so we can't always do this.
139 */
140 #if defined(_MSC_VER) && !defined(SQLULEN) && !defined(_WIN64)
141 # define MISSING_SQLULEN
142 #endif
143 
145 #if !defined(MISSING_SQLULEN)
146 /* ODBC types to support 64 bit compilation */
147 # define CPL_SQLULEN SQLULEN
148 # define CPL_SQLLEN SQLLEN
149 #else
150 # define CPL_SQLULEN SQLUINTEGER
151 # define CPL_SQLLEN SQLINTEGER
152 #endif /* ifdef SQLULEN */
153 
161 class CPL_DLL CPLODBCSession {
162 
164 
165  CPLString m_osLastError{};
166  HENV m_hEnv = nullptr;
167  HDBC m_hDBC = nullptr;
168  int m_bInTransaction = false;
169  int m_bAutoCommit = true;
170 
171  public:
172  CPLODBCSession();
173  ~CPLODBCSession();
174 
175  int EstablishSession( const char *pszDSN,
176  const char *pszUserid,
177  const char *pszPassword );
178  const char *GetLastError();
179 
180  // Transaction handling
181 
182  int ClearTransaction();
183  int BeginTransaction();
184  int CommitTransaction();
185  int RollbackTransaction();
187  int IsInTransaction() { return m_bInTransaction; }
188 
189  // Essentially internal.
190 
191  int CloseSession();
192 
193  int Failed( int, HSTMT = nullptr );
195  HDBC GetConnection() { return m_hDBC; }
197  HENV GetEnvironment() { return m_hEnv; }
198 };
199 
209 class CPL_DLL CPLODBCStatement {
210 
212 
213  CPLODBCSession *m_poSession = nullptr;
214  HSTMT m_hStmt = nullptr;
215 
216  SQLSMALLINT m_nColCount = 0;
217  char **m_papszColNames = nullptr;
218  SQLSMALLINT *m_panColType = nullptr;
219  char **m_papszColTypeNames = nullptr;
220  CPL_SQLULEN *m_panColSize = nullptr;
221  SQLSMALLINT *m_panColPrecision = nullptr;
222  SQLSMALLINT *m_panColNullable = nullptr;
223  char **m_papszColColumnDef = nullptr;
224 
225  char **m_papszColValues = nullptr;
226  CPL_SQLLEN *m_panColValueLengths = nullptr;
227 
228  int Failed( int );
229 
230  char *m_pszStatement = nullptr;
231  size_t m_nStatementMax = 0;
232  size_t m_nStatementLen = 0;
233 
234  public:
235  explicit CPLODBCStatement( CPLODBCSession * );
236  ~CPLODBCStatement();
237 
239  HSTMT GetStatement() { return m_hStmt; }
240 
241  // Command buffer related.
242  void Clear();
243  void AppendEscaped( const char * );
244  void Append( const char * );
245  void Append( int );
246  void Append( double );
247  int Appendf( CPL_FORMAT_STRING(const char *), ... ) CPL_PRINT_FUNC_FORMAT (2, 3);
249  const char *GetCommand() { return m_pszStatement; }
250 
251  int ExecuteSQL( const char * = nullptr );
252 
253  // Results fetching
254  int Fetch( int nOrientation = SQL_FETCH_NEXT,
255  int nOffset = 0 );
256  void ClearColumnData();
257 
258  int GetColCount();
259  const char *GetColName( int );
260  short GetColType( int );
261  const char *GetColTypeName( int );
262  short GetColSize( int );
263  short GetColPrecision( int );
264  short GetColNullable( int );
265  const char *GetColColumnDef( int );
266 
267  int GetColId( const char * );
268  const char *GetColData( int, const char * = nullptr );
269  const char *GetColData( const char *, const char * = nullptr );
270  int GetColDataLength( int );
271  int GetRowCountAffected();
272 
273  // Fetch special metadata.
274  int GetColumns( const char *pszTable,
275  const char *pszCatalog = nullptr,
276  const char *pszSchema = nullptr );
277  int GetPrimaryKeys( const char *pszTable,
278  const char *pszCatalog = nullptr,
279  const char *pszSchema = nullptr );
280 
281  int GetTables( const char *pszCatalog = nullptr,
282  const char *pszSchema = nullptr );
283 
284  void DumpResult( FILE *fp, int bShowSchema = FALSE );
285 
286  static CPLString GetTypeName( int );
287  static SQLSMALLINT GetTypeMapping( SQLSMALLINT );
288 
289  int CollectResultsInfo();
290 };
291 
292 #endif
CPLODBCDriverInstaller::InstallDriver
int InstallDriver(const char *pszDriver, const char *pszPathIn, WORD fRequest=ODBC_INSTALL_COMPLETE)
Definition: cpl_odbc.cpp:76
CPLODBCStatement::GetColTypeName
const char * GetColTypeName(int)
Definition: cpl_odbc.cpp:746
CPL_PRINT_FUNC_FORMAT
#define CPL_PRINT_FUNC_FORMAT(format_idx, arg_idx)
Definition: cpl_port.h:914
CPLRecodeFromWChar
char * CPLRecodeFromWChar(const wchar_t *pwszSource, const char *pszSrcEncoding, const char *pszDstEncoding)
Definition: cpl_recode.cpp:149
CPLODBCSession::CPLODBCSession
CPLODBCSession()
Definition: cpl_odbc.cpp:162
cpl_error.h
CPLString::Printf
CPLSTRING_METHOD_DLL CPLString & Printf(const char *pszFormat,...)
Definition: cplstring.cpp:59
CPLODBCStatement::CollectResultsInfo
int CollectResultsInfo()
Definition: cpl_odbc.cpp:579
CPLCalloc
void * CPLCalloc(size_t, size_t)
Definition: cpl_conv.cpp:138
CPLODBCStatement::GetColNullable
short GetColNullable(int)
Definition: cpl_odbc.cpp:810
CPLODBCStatement::GetTables
int GetTables(const char *pszCatalog=nullptr, const char *pszSchema=nullptr)
Definition: cpl_odbc.cpp:1657
cpl_vsi.h
CPLODBCStatement::GetPrimaryKeys
int GetPrimaryKeys(const char *pszTable, const char *pszCatalog=nullptr, const char *pszSchema=nullptr)
Definition: cpl_odbc.cpp:1604
CPLODBCSession::RollbackTransaction
int RollbackTransaction()
Definition: cpl_odbc.cpp:305
CPLODBCStatement::GetTypeMapping
static SQLSMALLINT GetTypeMapping(SQLSMALLINT)
Definition: cpl_odbc.cpp:1829
CPLODBCSession::CommitTransaction
int CommitTransaction()
Definition: cpl_odbc.cpp:282
CPLODBCStatement::GetColColumnDef
const char * GetColColumnDef(int)
Definition: cpl_odbc.cpp:834
CPLString
Convenient string class based on std::string.
Definition: cpl_string.h:330
CPLRealloc
void * CPLRealloc(void *, size_t)
Definition: cpl_conv.cpp:225
CPL_FRMT_GIB
#define CPL_FRMT_GIB
Definition: cpl_port.h:316
EQUAL
#define EQUAL(a, b)
Definition: cpl_port.h:569
CPLODBCStatement::Clear
void Clear()
Definition: cpl_odbc.cpp:1387
CPLODBCStatement::GetTypeName
static CPLString GetTypeName(int)
Definition: cpl_odbc.cpp:1762
CPLODBCSession::Failed
int Failed(int, HSTMT=nullptr)
Definition: cpl_odbc.cpp:336
CPLODBCSession::EstablishSession
int EstablishSession(const char *pszDSN, const char *pszUserid, const char *pszPassword)
Definition: cpl_odbc.cpp:403
CPLAssert
#define CPLAssert(expr)
Definition: cpl_error.h:186
CPLODBCStatement::GetColSize
short GetColSize(int)
Definition: cpl_odbc.cpp:767
CPLODBCStatement::GetStatement
HSTMT GetStatement()
Definition: cpl_odbc.h:239
CPLODBCStatement::GetColId
int GetColId(const char *)
Definition: cpl_odbc.cpp:1170
CPLODBCSession::GetConnection
HDBC GetConnection()
Definition: cpl_odbc.h:195
CPLODBCSession::GetEnvironment
HENV GetEnvironment()
Definition: cpl_odbc.h:197
CPLODBCStatement::DumpResult
void DumpResult(FILE *fp, int bShowSchema=FALSE)
Definition: cpl_odbc.cpp:1704
CPL_ENC_UTF8
#define CPL_ENC_UTF8
Definition: cpl_string.h:265
CPLODBCSession::BeginTransaction
int BeginTransaction()
Definition: cpl_odbc.cpp:244
CPLDebug
void CPLDebug(const char *, const char *,...)
Definition: cpl_error.cpp:602
CPLODBCStatement::AppendEscaped
void AppendEscaped(const char *)
Definition: cpl_odbc.cpp:1265
CPLODBCStatement::~CPLODBCStatement
~CPLODBCStatement()
Definition: cpl_odbc.cpp:512
CPLMalloc
void * CPLMalloc(size_t)
Definition: cpl_conv.cpp:168
CPLODBCStatement::Fetch
int Fetch(int nOrientation=SQL_FETCH_NEXT, int nOffset=0)
Definition: cpl_odbc.cpp:867
CPLODBCSession::~CPLODBCSession
~CPLODBCSession()
Definition: cpl_odbc.cpp:171
CPLODBCStatement
Definition: cpl_odbc.h:209
CPLODBCStatement::GetRowCountAffected
int GetRowCountAffected()
Definition: cpl_odbc.cpp:658
cpl_string.h
CPLODBCStatement::GetColDataLength
int GetColDataLength(int)
Definition: cpl_odbc.cpp:1144
CPLError
void CPLError(CPLErr eErrClass, CPLErrorNum err_no, const char *fmt,...)
Definition: cpl_error.cpp:308
CPLODBCSession
Definition: cpl_odbc.h:161
CPLODBCDriverInstaller::GetLastError
const char * GetLastError() const
Definition: cpl_odbc.h:124
CPLODBCDriverInstaller::GetPathOut
const char * GetPathOut() const
Definition: cpl_odbc.h:118
CPLODBCSession::CloseSession
int CloseSession()
Definition: cpl_odbc.cpp:182
VSIMalloc
void * VSIMalloc(size_t)
Definition: cpl_vsisimple.cpp:558
CSLDestroy
void CSLDestroy(char **papszStrList)
Definition: cpl_string.cpp:200
GIntBig
long long GIntBig
Definition: cpl_port.h:248
CPLODBCDriverInstaller::GetLastErrorCode
DWORD GetLastErrorCode() const
Definition: cpl_odbc.h:131
CPL_ENC_UCS2
#define CPL_ENC_UCS2
Definition: cpl_string.h:269
CPL_UNUSED
#define CPL_UNUSED
Definition: cpl_port.h:948
CPL_FORMAT_STRING
#define CPL_FORMAT_STRING(arg)
Definition: cpl_port.h:929
CPLODBCStatement::GetColType
short GetColType(int)
Definition: cpl_odbc.cpp:721
cpl_port.h
CPLODBCSession::ClearTransaction
int ClearTransaction()
Definition: cpl_odbc.cpp:210
CPLODBCStatement::Appendf
int Appendf(const char *,...)
Definition: cpl_odbc.cpp:1352
CPLODBCDriverInstaller::GetUsageCount
int GetUsageCount() const
Definition: cpl_odbc.h:112
CPLODBCDriverInstaller
Definition: cpl_odbc.h:62
CPLODBCSession::IsInTransaction
int IsInTransaction()
Definition: cpl_odbc.h:187
cpl_odbc.h
CPLODBCStatement::Append
void Append(const char *)
Definition: cpl_odbc.cpp:1227
CPLStrdup
char * CPLStrdup(const char *)
Definition: cpl_conv.cpp:293
CPLODBCStatement::GetColName
const char * GetColName(int)
Definition: cpl_odbc.cpp:695
CPLODBCStatement::GetColCount
int GetColCount()
Definition: cpl_odbc.cpp:676
CPLODBCStatement::GetColumns
int GetColumns(const char *pszTable, const char *pszCatalog=nullptr, const char *pszSchema=nullptr)
Definition: cpl_odbc.cpp:1463
CPLODBCStatement::ExecuteSQL
int ExecuteSQL(const char *=nullptr)
Definition: cpl_odbc.cpp:540
CPLODBCStatement::GetColData
const char * GetColData(int, const char *=nullptr)
Definition: cpl_odbc.cpp:1096
CPLODBCStatement::GetColPrecision
short GetColPrecision(int)
Definition: cpl_odbc.cpp:789
CPLODBCSession::GetLastError
const char * GetLastError()
Definition: cpl_odbc.cpp:480
CPLODBCDriverInstaller::RemoveDriver
int RemoveDriver(const char *pszDriverName, int fRemoveDSN=FALSE)
Definition: cpl_odbc.cpp:137
GUInt16
unsigned short GUInt16
Definition: cpl_port.h:213
CPLFree
#define CPLFree
Definition: cpl_conv.h:81
CPLODBCStatement::ClearColumnData
void ClearColumnData()
Definition: cpl_odbc.cpp:1185
CPL_DISALLOW_COPY_ASSIGN
#define CPL_DISALLOW_COPY_ASSIGN(ClassName)
Definition: cpl_port.h:997
CPLE_AppDefined
#define CPLE_AppDefined
Definition: cpl_error.h:99

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