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Added PrependColumn methods and short cuts. Added test for DeleteColumn to sample
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108106cf 1///////////////////////////////////////////////////////////////////////////////
a2115c88 2// Name: dbtable.h
f6bcfd97 3// Purpose: Declaration of the wxDbTable class.
108106cf 4// Author: Doug Card
30a6d2d2 5// Modified by: George Tasker
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6// Bart Jourquin
7// Mark Johnson
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8// Created: 9.96
9// RCS-ID: $Id$
10// Copyright: (c) 1996 Remstar International, Inc.
7e559cd8 11// Licence: wxWindows licence
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12///////////////////////////////////////////////////////////////////////////////
13
14/*
15// SYNOPSIS START
16// SYNOPSIS STOP
17*/
18
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19#ifndef DBTABLE_DOT_H
20#define DBTABLE_DOT_H
108106cf 21
2ecf902b 22#include "wx/defs.h"
a2115c88 23
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24#include "wx/db.h"
25
26#include "wx/variant.h"
27#include "wx/dbkeyg.h"
108106cf 28
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29const int wxDB_ROWID_LEN = 24; // 18 is the max, 24 is in case it gets larger
30const int wxDB_DEFAULT_CURSOR = 0;
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31const bool wxDB_QUERY_ONLY = true;
32const bool wxDB_DISABLE_VIEW = true;
108106cf 33
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34// Used to indicate end of a variable length list of
35// column numbers passed to member functions
36const int wxDB_NO_MORE_COLUMN_NUMBERS = -1;
37
108106cf 38// The following class is used to define a column of a table.
f6bcfd97 39// The wxDbTable constructor will dynamically allocate as many of
108106cf 40// these as there are columns in the table. The class derived
f6bcfd97 41// from wxDbTable must initialize these column definitions in it's
108106cf 42// constructor. These column definitions provide inf. to the
f6bcfd97 43// wxDbTable class which allows it to create a table in the data
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44// source, exchange data between the data source and the C++
45// object, and so on.
bb41dcbe 46class WXDLLIMPEXP_ODBC wxDbColDef
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47{
48public:
4fdae997 49 wxChar ColName[DB_MAX_COLUMN_NAME_LEN+1]; // Column Name
95ca6a20 50 int DbDataType; // Logical Data Type; e.g. DB_DATA_TYPE_INTEGER
02cf6fdd 51 SWORD SqlCtype; // C data type; e.g. SQL_C_LONG
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52 void *PtrDataObj; // Address of the data object
53 int SzDataObj; // Size, in bytes, of the data object
68379eaf 54 bool KeyField; // true if this column is part of the PRIMARY KEY to the table; Date fields should NOT be KeyFields.
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55 bool Updateable; // Specifies whether this column is updateable
56 bool InsertAllowed; // Specifies whether this column should be included in an INSERT statement
57 bool DerivedCol; // Specifies whether this column is a derived value
d71a2d78 58 SQLLEN CbValue; // Internal use only!!! For parameter bindings
95ca6a20 59 bool Null; // NOT FULLY IMPLEMENTED - Allows NULL values in Inserts and Updates
d71a2d78 60 SQLLEN CbValueCol; // Internal use only!!! For column bindings
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61
62 wxDbColDef();
63
64 bool Initialize();
f6bcfd97 65}; // wxDbColDef
30a6d2d2 66
95ca6a20 67
bb41dcbe 68class WXDLLIMPEXP_ODBC wxDbColDataPtr
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69{
70public:
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71 void *PtrDataObj;
72 int SzDataObj;
02cf6fdd 73 SWORD SqlCtype;
f6bcfd97 74}; // wxDbColDataPtr
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75
76
108106cf 77// This structure is used when creating secondary indexes.
bb41dcbe 78class WXDLLIMPEXP_ODBC wxDbIdxDef
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79{
80public:
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81 wxChar ColName[DB_MAX_COLUMN_NAME_LEN+1];
82 bool Ascending;
f6bcfd97 83}; // wxDbIdxDef
108106cf 84
95ca6a20 85
bb41dcbe 86class WXDLLIMPEXP_ODBC wxDbTable
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87{
88private:
3ca6a5f0 89 ULONG tableID; // Used for debugging. This can help to match up mismatched constructors/destructors
108106cf 90
95ca6a20 91 // Private member variables
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92 UDWORD cursorType;
93 bool insertable;
a2115c88 94
95ca6a20 95 // Private member functions
02cf6fdd 96 bool initialize(wxDb *pwxDb, const wxString &tblName, const UWORD numColumns,
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97 const wxString &qryTblName, bool qryOnly, const wxString &tblPath);
98 void cleanup();
99
0907ea9c 100 void setCbValueForColumn(int columnIndex);
4fdae997 101 bool bindParams(bool forUpdate); // called by the other 'bind' functions
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102 bool bindInsertParams(void);
103 bool bindUpdateParams(void);
4fdae997 104
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105 bool bindCols(HSTMT cursor);
106 bool getRec(UWORD fetchType);
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107 bool execDelete(const wxString &pSqlStmt);
108 bool execUpdate(const wxString &pSqlStmt);
da99271d 109 bool query(int queryType, bool forUpdate, bool distinct, const wxString &pSqlStmt=wxEmptyString);
108106cf 110
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111#if !wxODBC_BACKWARD_COMPATABILITY
112// these were public
113 // Where, Order By and From clauses
114 wxString where; // Standard SQL where clause, minus the word WHERE
115 wxString orderBy; // Standard SQL order by clause, minus the ORDER BY
116 wxString from; // Allows for joins in a wxDbTable::Query(). Format: ",tbl,tbl..."
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117
118 // ODBC Handles
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119 HENV henv; // ODBC Environment handle
120 HDBC hdbc; // ODBC DB Connection handle
121 HSTMT hstmt; // ODBC Statement handle
122 HSTMT *hstmtDefault; // Default cursor
123 HSTMT hstmtInsert; // ODBC Statement handle used specifically for inserts
124 HSTMT hstmtDelete; // ODBC Statement handle used specifically for deletes
125 HSTMT hstmtUpdate; // ODBC Statement handle used specifically for updates
126 HSTMT hstmtInternal; // ODBC Statement handle used internally only
127 HSTMT *hstmtCount; // ODBC Statement handle used by Count() function (No binding of columns)
95ca6a20 128
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129 // Flags
130 bool selectForUpdate;
95ca6a20 131
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132 // Pointer to the database object this table belongs to
133 wxDb *pDb;
95ca6a20 134
f6bcfd97 135 // Table Inf.
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136 wxString tablePath; // needed for dBase tables
137 wxString tableName; // Table name
138 wxString queryTableName; // Query Table Name
b8032740 139 UWORD m_numCols; // # of columns in the table
f6bcfd97 140 bool queryOnly; // Query Only, no inserts, updates or deletes
95ca6a20 141
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142 // Column Definitions
143 wxDbColDef *colDefs; // Array of wxDbColDef structures
144#endif
145public:
146#if wxODBC_BACKWARD_COMPATABILITY
95ca6a20 147 // Where, Order By and From clauses
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148 char *where; // Standard SQL where clause, minus the word WHERE
149 char *orderBy; // Standard SQL order by clause, minus the ORDER BY
150 char *from; // Allows for joins in a wxDbTable::Query(). Format: ",tbl,tbl..."
151
152 // ODBC Handles
153 HENV henv; // ODBC Environment handle
154 HDBC hdbc; // ODBC DB Connection handle
155 HSTMT hstmt; // ODBC Statement handle
156 HSTMT *hstmtDefault; // Default cursor
157 HSTMT hstmtInsert; // ODBC Statement handle used specifically for inserts
158 HSTMT hstmtDelete; // ODBC Statement handle used specifically for deletes
159 HSTMT hstmtUpdate; // ODBC Statement handle used specifically for updates
160 HSTMT hstmtInternal; // ODBC Statement handle used internally only
161 HSTMT *hstmtCount; // ODBC Statement handle used by Count() function (No binding of columns)
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162
163 // Flags
f6bcfd97 164 bool selectForUpdate;
95ca6a20 165
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166 // Pointer to the database object this table belongs to
167 wxDb *pDb;
168
169 // Table Inf.
170 char tablePath[wxDB_PATH_MAX]; // needed for dBase tables
171 char tableName[DB_MAX_TABLE_NAME_LEN+1]; // Table name
172 char queryTableName[DB_MAX_TABLE_NAME_LEN+1]; // Query Table Name
b8032740 173 UWORD m_numCols; // # of columns in the table
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174 bool queryOnly; // Query Only, no inserts, updates or deletes
175
176 // Column Definitions
177 wxDbColDef *colDefs; // Array of wxDbColDef structures
178#endif
95ca6a20 179 // Public member functions
02cf6fdd 180 wxDbTable(wxDb *pwxDb, const wxString &tblName, const UWORD numColumns,
68379eaf 181 const wxString &qryTblName=wxEmptyString, bool qryOnly = !wxDB_QUERY_ONLY,
8a39593e 182 const wxString &tblPath=wxEmptyString);
4fdae997 183
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184 virtual ~wxDbTable();
185
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186 bool Open(bool checkPrivileges=false, bool checkTableExists=true);
187 bool CreateTable(bool attemptDrop=true);
f6bcfd97 188 bool DropTable(void);
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189 bool CreateIndex(const wxString &indexName, bool unique, UWORD numIndexColumns,
190 wxDbIdxDef *pIndexDefs, bool attemptDrop=true);
191 bool DropIndex(const wxString &indexName);
f6bcfd97 192
3ca6a5f0 193 // Accessors
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194
195 // The member variables returned by these accessors are all
68379eaf 196 // set when the wxDbTable instance is created and cannot be
f6bcfd97 197 // changed, hence there is no corresponding SetXxxx function
3ca6a5f0 198 wxDb *GetDb() { return pDb; }
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199 const wxString &GetTableName() { return tableName; }
200 const wxString &GetQueryTableName() { return queryTableName; }
201 const wxString &GetTablePath() { return tablePath; }
f6bcfd97 202
b8032740 203 UWORD GetNumberOfColumns() { return m_numCols; } // number of "defined" columns for this wxDbTable instance
f6bcfd97 204
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205 const wxString &GetFromClause() { return from; }
206 const wxString &GetOrderByClause() { return orderBy; }
207 const wxString &GetWhereClause() { return where; }
f6bcfd97 208
3ca6a5f0 209 bool IsQueryOnly() { return queryOnly; }
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210#if wxODBC_BACKWARD_COMPATABILITY
211 void SetFromClause(const char *From) { from = (char *)From; }
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212 void SetOrderByClause(const char *OrderBy) { orderBy = (char *)OrderBy; }
213 void SetWhereClause(const char *Where) { where = (char *)Where; }
f6bcfd97 214#else
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215 void SetFromClause(const wxString &From) { from = From; }
216 void SetOrderByClause(const wxString &OrderBy) { orderBy = OrderBy; }
e938ff5e 217 bool SetOrderByColNums(UWORD first, ...);
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218 void SetWhereClause(const wxString &Where) { where = Where; }
219 void From(const wxString &From) { from = From; }
220 void OrderBy(const wxString &OrderBy) { orderBy = OrderBy; }
221 void Where(const wxString &Where) { where = Where; }
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222 const wxString &Where() { return where; }
223 const wxString &OrderBy() { return orderBy; }
224 const wxString &From() { return from; }
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225#endif
226 int Insert(void);
227 bool Update(void);
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228 bool Update(const wxString &pSqlStmt);
229 bool UpdateWhere(const wxString &pWhereClause);
f6bcfd97 230 bool Delete(void);
4fdae997 231 bool DeleteWhere(const wxString &pWhereClause);
f6bcfd97 232 bool DeleteMatching(void);
68379eaf 233 virtual bool Query(bool forUpdate = false, bool distinct = false);
4fdae997 234 bool QueryBySqlStmt(const wxString &pSqlStmt);
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235 bool QueryMatching(bool forUpdate = false, bool distinct = false);
236 bool QueryOnKeyFields(bool forUpdate = false, bool distinct = false);
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237 bool Refresh(void);
238 bool GetNext(void) { return(getRec(SQL_FETCH_NEXT)); }
239 bool operator++(int) { return(getRec(SQL_FETCH_NEXT)); }
240
241 /***** These four functions only work with wxDb instances that are defined *****
95ca6a20 242 ***** as not being FwdOnlyCursors *****/
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243 bool GetPrev(void);
244 bool operator--(int);
245 bool GetFirst(void);
246 bool GetLast(void);
247
248 bool IsCursorClosedOnCommit(void);
249 UWORD GetRowNum(void);
250
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251 void BuildSelectStmt(wxString &pSqlStmt, int typeOfSelect, bool distinct);
252 void BuildSelectStmt(wxChar *pSqlStmt, int typeOfSelect, bool distinct);
253
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254 void BuildDeleteStmt(wxString &pSqlStmt, int typeOfDel, const wxString &pWhereClause=wxEmptyString);
255 void BuildDeleteStmt(wxChar *pSqlStmt, int typeOfDel, const wxString &pWhereClause=wxEmptyString);
4fdae997 256
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257 void BuildUpdateStmt(wxString &pSqlStmt, int typeOfUpdate, const wxString &pWhereClause=wxEmptyString);
258 void BuildUpdateStmt(wxChar *pSqlStmt, int typeOfUpdate, const wxString &pWhereClause=wxEmptyString);
4fdae997 259
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260 void BuildWhereClause(wxString &pWhereClause, int typeOfWhere, const wxString &qualTableName=wxEmptyString, bool useLikeComparison=false);
261 void BuildWhereClause(wxChar *pWhereClause, int typeOfWhere, const wxString &qualTableName=wxEmptyString, bool useLikeComparison=false);
4fdae997 262
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263#if wxODBC_BACKWARD_COMPATABILITY
264// The following member functions are deprecated. You should use the BuildXxxxxStmt functions (above)
265 void GetSelectStmt(char *pSqlStmt, int typeOfSelect, bool distinct)
266 { BuildSelectStmt(pSqlStmt,typeOfSelect,distinct); }
2b63ff5d 267 void GetDeleteStmt(char *pSqlStmt, int typeOfDel, const char *pWhereClause = NULL)
f6bcfd97 268 { BuildDeleteStmt(pSqlStmt,typeOfDel,pWhereClause); }
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269 void GetUpdateStmt(char *pSqlStmt, int typeOfUpdate, const char *pWhereClause = NULL)
270 { BuildUpdateStmt(pSqlStmt,typeOfUpdate,pWhereClause); }
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271 void GetWhereClause(char *pWhereClause, int typeOfWhere,
272 const char *qualTableName = NULL, bool useLikeComparison=false)
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273 { BuildWhereClause(pWhereClause,typeOfWhere,qualTableName,useLikeComparison); }
274#endif
275 bool CanSelectForUpdate(void);
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276#if wxODBC_BACKWARD_COMPATABILITY
277 bool CanUpdByROWID(void) { return CanUpdateByRowID(); };
278#endif
279 bool CanUpdateByROWID(void);
280 void ClearMemberVar(UWORD colNumber, bool setToNull=false);
68379eaf 281 void ClearMemberVars(bool setToNull=false);
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282 bool SetQueryTimeout(UDWORD nSeconds);
283
284 wxDbColDef *GetColDefs() { return colDefs; }
b8032740 285 bool SetColDefs(UWORD index, const wxString &fieldName, int dataType,
02cf6fdd 286 void *pData, SWORD cType,
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287 int size, bool keyField = false, bool updateable = true,
288 bool insertAllowed = true, bool derivedColumn = false);
21e05269 289 wxDbColDataPtr *SetColDefs(wxDbColInf *colInfs, UWORD numCols);
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290
291 bool CloseCursor(HSTMT cursor);
292 bool DeleteCursor(HSTMT *hstmtDel);
293 void SetCursor(HSTMT *hstmtActivate = (void **) wxDB_DEFAULT_CURSOR);
294 HSTMT GetCursor(void) { return(hstmt); }
68379eaf 295 HSTMT *GetNewCursor(bool setCursor = false, bool bindColumns = true);
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296#if wxODBC_BACKWARD_COMPATABILITY
297// The following member function is deprecated. You should use the GetNewCursor
68379eaf 298 HSTMT *NewCursor(bool setCursor = false, bool bindColumns = true) { return GetNewCursor(setCursor,bindColumns); }
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299#endif
300
8a39593e 301 ULONG Count(const wxString &args=_T("*"));
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302 int DB_STATUS(void) { return(pDb->DB_STATUS); }
303
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304 bool IsColNull(UWORD colNumber) const;
305 bool SetColNull(UWORD colNumber, bool set=true);
68379eaf 306 bool SetColNull(const wxString &colName, bool set=true);
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307#if wxODBC_BACKWARD_COMPATABILITY
308// The following member functions are deprecated. You should use the SetColNull()
b8032740 309 bool SetNull(int colNumber, bool set=true) { return (SetNull(colNumber,set)); }
68379eaf 310 bool SetNull(const char *colName, bool set=true) { return (SetNull(colName,set)); }
f02d4a64 311#endif
154f22b3 312#ifdef __WXDEBUG__
f6bcfd97 313 ULONG GetTableID() { return tableID; }
a2115c88 314#endif
108106cf 315
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316//TODO: Need to Document
317 typedef enum { WX_ROW_MODE_QUERY , WX_ROW_MODE_INDIVIDUAL } rowmode_t;
318 virtual void SetRowMode(const rowmode_t rowmode);
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319#if wxODBC_BACKWARD_COMPATABILITY
320 virtual wxVariant GetCol(const int colNumber) const { return GetColumn(colNumber); };
321 virtual void SetCol(const int colNumber, const wxVariant value) { return SetColumn(colNumber, value); };
322#endif
323 virtual wxVariant GetColumn(const int colNumber) const ;
324 virtual void SetColumn(const int colNumber, const wxVariant value);
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325 virtual GenericKey GetKey(void);
326 virtual void SetKey(const GenericKey &key);
327
328 private:
329 HSTMT *m_hstmtGridQuery;
330 rowmode_t m_rowmode;
331 size_t m_keysize;
332
333// typedef enum {unmodified=0, UpdatePending, InsertPending } recStatus;
334
335// recStatus get_ModifiedStatus() { return m_recstatus; }
68379eaf 336
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337// void modify() {
338// if (m_recstatus==unmodified)
339// m_recstatus=UpdatePending;
340// }
341// protected:
342// void insertify() {m_recstatus=InsertPending; }
343// void unmodify() {m_recstatus=unmodified; }
344// recStatus m_recstatus;
345//TODO: Need to Document
f6bcfd97 346}; // wxDbTable
108106cf 347
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348
349// Change this to 0 to remove use of all deprecated functions
f6bcfd97 350#if wxODBC_BACKWARD_COMPATABILITY
4a8fc2c8 351//#################################################################################
3103e8a9 352//############### DEPRECATED functions for backward compatibility #################
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353//#################################################################################
354
355// Backward compability. These will eventually go away
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356typedef wxDbTable wxTable;
357typedef wxDbIdxDef wxIdxDef;
358typedef wxDbIdxDef CidxDef;
359typedef wxDbColDef wxColDef;
360typedef wxDbColDef CcolDef;
361typedef wxDbColDataPtr wxColDataPtr;
362typedef wxDbColDataPtr CcolDataPtr;
363
364const int ROWID = wxDB_ROWID_LEN;
365const int DEFAULT_CURSOR = wxDB_DEFAULT_CURSOR;
366const bool QUERY_ONLY = wxDB_QUERY_ONLY;
367const bool DISABLE_VIEW = wxDB_DISABLE_VIEW;
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368#endif
369
108106cf 370#endif