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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.
11// Licence: wxWindows licence, plus:
95ca6a20 12// Notice: This class library and its intellectual design are free of charge for use,
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13// modification, enhancement, debugging under the following conditions:
14// 1) These classes may only be used as part of the implementation of a
15// wxWindows-based application
16// 2) All enhancements and bug fixes are to be submitted back to the wxWindows
17// user groups free of all charges for use with the wxWindows library.
18// 3) These classes may not be distributed as part of any other class library,
19// DLL, text (written or electronic), other than a complete distribution of
20// the wxWindows GUI development toolkit.
21///////////////////////////////////////////////////////////////////////////////
22
23/*
24// SYNOPSIS START
25// SYNOPSIS STOP
26*/
27
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28#ifndef DBTABLE_DOT_H
29#define DBTABLE_DOT_H
108106cf 30
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31// Use this line for wxWindows v1.x
32//#include "wx_ver.h"
33// Use this line for wxWindows v2.x
34#include "wx/version.h"
35
36#if wxMAJOR_VERSION == 2
95ca6a20 37 #ifdef __GNUG__
3ca6a5f0 38 #pragma interface "dbtable.h"
95ca6a20 39 #endif
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40#endif
41
a2115c88 42#if wxMAJOR_VERSION == 2
95ca6a20 43 #include "wx/db.h"
a2115c88 44#else
95ca6a20 45 #include "db.h"
a2115c88 46#endif
108106cf 47
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48const int wxDB_ROWID_LEN = 24; // 18 is the max, 24 is in case it gets larger
49const int wxDB_DEFAULT_CURSOR = 0;
50const bool wxDB_QUERY_ONLY = TRUE;
51const bool wxDB_DISABLE_VIEW = TRUE;
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52
53// The following class is used to define a column of a table.
f6bcfd97 54// The wxDbTable constructor will dynamically allocate as many of
108106cf 55// these as there are columns in the table. The class derived
f6bcfd97 56// from wxDbTable must initialize these column definitions in it's
108106cf 57// constructor. These column definitions provide inf. to the
f6bcfd97 58// wxDbTable class which allows it to create a table in the data
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59// source, exchange data between the data source and the C++
60// object, and so on.
f6bcfd97 61class WXDLLEXPORT wxDbColDef
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62{
63public:
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64 char ColName[DB_MAX_COLUMN_NAME_LEN+1]; // Column Name
65 int DbDataType; // Logical Data Type; e.g. DB_DATA_TYPE_INTEGER
66 int SqlCtype; // C data type; e.g. SQL_C_LONG
67 void *PtrDataObj; // Address of the data object
68 int SzDataObj; // Size, in bytes, of the data object
69 bool KeyField; // TRUE if this column is part of the PRIMARY KEY to the table; Date fields should NOT be KeyFields.
70 bool Updateable; // Specifies whether this column is updateable
71 bool InsertAllowed; // Specifies whether this column should be included in an INSERT statement
72 bool DerivedCol; // Specifies whether this column is a derived value
73 SDWORD CbValue; // Internal use only!!!
74 bool Null; // NOT FULLY IMPLEMENTED - Allows NULL values in Inserts and Updates
f6bcfd97 75}; // wxDbColDef
30a6d2d2 76
95ca6a20 77
f6bcfd97 78class WXDLLEXPORT wxDbColDataPtr
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79{
80public:
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81 void *PtrDataObj;
82 int SzDataObj;
83 int SqlCtype;
f6bcfd97 84}; // wxDbColDataPtr
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85
86
108106cf 87// This structure is used when creating secondary indexes.
f6bcfd97 88class WXDLLEXPORT wxDbIdxDef
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89{
90public:
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91 char ColName[DB_MAX_COLUMN_NAME_LEN+1];
92 bool Ascending;
f6bcfd97 93}; // wxDbIdxDef
108106cf 94
95ca6a20 95
f6bcfd97 96class WXDLLEXPORT wxDbTable
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97{
98private:
3ca6a5f0 99 ULONG tableID; // Used for debugging. This can help to match up mismatched constructors/destructors
108106cf 100
95ca6a20 101 // Private member variables
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102 UDWORD cursorType;
103 bool insertable;
a2115c88 104
95ca6a20 105 // Private member functions
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106 bool bindInsertParams(void);
107 bool bindUpdateParams(void);
108 bool bindCols(HSTMT cursor);
109 bool getRec(UWORD fetchType);
110 bool execDelete(const char *pSqlStmt);
111 bool execUpdate(const char *pSqlStmt);
112 bool query(int queryType, bool forUpdate, bool distinct, const char *pSqlStmt = 0);
108106cf 113
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114#if !wxODBC_BACKWARD_COMPATABILITY
115// these were public
116 // Where, Order By and From clauses
117 wxString where; // Standard SQL where clause, minus the word WHERE
118 wxString orderBy; // Standard SQL order by clause, minus the ORDER BY
119 wxString from; // Allows for joins in a wxDbTable::Query(). Format: ",tbl,tbl..."
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120
121 // ODBC Handles
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122 HENV henv; // ODBC Environment handle
123 HDBC hdbc; // ODBC DB Connection handle
124 HSTMT hstmt; // ODBC Statement handle
125 HSTMT *hstmtDefault; // Default cursor
126 HSTMT hstmtInsert; // ODBC Statement handle used specifically for inserts
127 HSTMT hstmtDelete; // ODBC Statement handle used specifically for deletes
128 HSTMT hstmtUpdate; // ODBC Statement handle used specifically for updates
129 HSTMT hstmtInternal; // ODBC Statement handle used internally only
130 HSTMT *hstmtCount; // ODBC Statement handle used by Count() function (No binding of columns)
95ca6a20 131
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132 // Flags
133 bool selectForUpdate;
95ca6a20 134
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135 // Pointer to the database object this table belongs to
136 wxDb *pDb;
95ca6a20 137
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138 // Table Inf.
139 char tablePath[wxDB_PATH_MAX]; // needed for dBase tables
140 char tableName[DB_MAX_TABLE_NAME_LEN+1]; // Table name
141 char queryTableName[DB_MAX_TABLE_NAME_LEN+1]; // Query Table Name
142 int noCols; // # of columns in the table
143 bool queryOnly; // Query Only, no inserts, updates or deletes
95ca6a20 144
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145 // Column Definitions
146 wxDbColDef *colDefs; // Array of wxDbColDef structures
147#endif
148public:
149#if wxODBC_BACKWARD_COMPATABILITY
95ca6a20 150 // Where, Order By and From clauses
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151 char *where; // Standard SQL where clause, minus the word WHERE
152 char *orderBy; // Standard SQL order by clause, minus the ORDER BY
153 char *from; // Allows for joins in a wxDbTable::Query(). Format: ",tbl,tbl..."
154
155 // ODBC Handles
156 HENV henv; // ODBC Environment handle
157 HDBC hdbc; // ODBC DB Connection handle
158 HSTMT hstmt; // ODBC Statement handle
159 HSTMT *hstmtDefault; // Default cursor
160 HSTMT hstmtInsert; // ODBC Statement handle used specifically for inserts
161 HSTMT hstmtDelete; // ODBC Statement handle used specifically for deletes
162 HSTMT hstmtUpdate; // ODBC Statement handle used specifically for updates
163 HSTMT hstmtInternal; // ODBC Statement handle used internally only
164 HSTMT *hstmtCount; // ODBC Statement handle used by Count() function (No binding of columns)
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165
166 // Flags
f6bcfd97 167 bool selectForUpdate;
95ca6a20 168
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169 // Pointer to the database object this table belongs to
170 wxDb *pDb;
171
172 // Table Inf.
173 char tablePath[wxDB_PATH_MAX]; // needed for dBase tables
174 char tableName[DB_MAX_TABLE_NAME_LEN+1]; // Table name
175 char queryTableName[DB_MAX_TABLE_NAME_LEN+1]; // Query Table Name
176 int noCols; // # of columns in the table
177 bool queryOnly; // Query Only, no inserts, updates or deletes
178
179 // Column Definitions
180 wxDbColDef *colDefs; // Array of wxDbColDef structures
181#endif
95ca6a20 182 // Public member functions
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183 wxDbTable(wxDb *pwxDb, const char *tblName, const int nCols,
184 const char *qryTblName = 0, bool qryOnly = !wxDB_QUERY_ONLY, const char *tblPath=NULL);
185 virtual ~wxDbTable();
186
187 bool Open(void);
188 bool CreateTable(bool attemptDrop=TRUE);
189 bool DropTable(void);
190 bool CreateIndex(const char * idxName, bool unique, int noIdxCols, wxDbIdxDef *pIdxDefs, bool attemptDrop=TRUE);
191 bool DropIndex(const char * idxName);
192
3ca6a5f0 193 // Accessors
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194
195 // The member variables returned by these accessors are all
196 // set when the wxDbTable instance is createand cannot be
197 // changed, hence there is no corresponding SetXxxx function
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198 wxDb *GetDb() { return pDb; }
199 const char *GetTableName() { return tableName; }
200 const char *GetQueryTableName() { return queryTableName; }
201 const char *GetTablePath() { return tablePath; }
f6bcfd97 202
3ca6a5f0 203 int GetNumberOfColumns() { return noCols; } // number of "defined" columns for this wxDbTable instance
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204
205
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206 const char *GetFromClause() { return from; }
207 const char *GetOrderByClause() { return orderBy; }
208 const char *GetWhereClause() { return where; }
f6bcfd97 209
3ca6a5f0 210 bool IsQueryOnly() { return queryOnly; }
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211#if wxODBC_BACKWARD_COMPATABILITY
212 void SetFromClause(const char *From) { from = (char *)From; }
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213 void SetOrderByClause(const char *OrderBy) { orderBy = (char *)OrderBy; }
214 void SetWhereClause(const char *Where) { where = (char *)Where; }
f6bcfd97 215#else
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216 void SetFromClause(const wxString& From) { from = From; }
217 void SetOrderByClause(const wxString& OrderBy) { orderBy = OrderBy; }
218 void SetWhereClause(const wxString& Where) { where = Where; }
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219#endif
220 int Insert(void);
221 bool Update(void);
222 bool Update(const char *pSqlStmt);
223 bool UpdateWhere(const char *pWhereClause);
224 bool Delete(void);
225 bool DeleteWhere(const char *pWhereClause);
226 bool DeleteMatching(void);
227 virtual bool Query(bool forUpdate = FALSE, bool distinct = FALSE);
228 bool QueryBySqlStmt(const char *pSqlStmt);
229 bool QueryMatching(bool forUpdate = FALSE, bool distinct = FALSE);
230 bool QueryOnKeyFields(bool forUpdate = FALSE, bool distinct = FALSE);
231 bool Refresh(void);
232 bool GetNext(void) { return(getRec(SQL_FETCH_NEXT)); }
233 bool operator++(int) { return(getRec(SQL_FETCH_NEXT)); }
234
235 /***** These four functions only work with wxDb instances that are defined *****
95ca6a20 236 ***** as not being FwdOnlyCursors *****/
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237 bool GetPrev(void);
238 bool operator--(int);
239 bool GetFirst(void);
240 bool GetLast(void);
241
242 bool IsCursorClosedOnCommit(void);
243 UWORD GetRowNum(void);
244
245 void BuildSelectStmt(char *pSqlStmt, int typeOfSelect, bool distinct);
246 void BuildDeleteStmt(char *pSqlStmt, int typeOfDel, const char *pWhereClause = 0);
247 void BuildUpdateStmt(char *pSqlStmt, int typeOfUpd, const char *pWhereClause = 0);
248 void BuildWhereClause(char *pWhereClause, int typeOfWhere, const char *qualTableName = 0, bool useLikeComparison=FALSE);
249#if wxODBC_BACKWARD_COMPATABILITY
250// The following member functions are deprecated. You should use the BuildXxxxxStmt functions (above)
251 void GetSelectStmt(char *pSqlStmt, int typeOfSelect, bool distinct)
252 { BuildSelectStmt(pSqlStmt,typeOfSelect,distinct); }
253 void GetDeleteStmt(char *pSqlStmt, int typeOfDel, const char *pWhereClause = 0)
254 { BuildDeleteStmt(pSqlStmt,typeOfDel,pWhereClause); }
255 void GetUpdateStmt(char *pSqlStmt, int typeOfUpd, const char *pWhereClause = 0)
256 { BuildUpdateStmt(pSqlStmt,typeOfUpd,pWhereClause); }
257 void GetWhereClause(char *pWhereClause, int typeOfWhere,
258 const char *qualTableName = 0, bool useLikeComparison=FALSE)
259 { BuildWhereClause(pWhereClause,typeOfWhere,qualTableName,useLikeComparison); }
260#endif
261 bool CanSelectForUpdate(void);
262 bool CanUpdByROWID(void);
263 void ClearMemberVars(void);
264 bool SetQueryTimeout(UDWORD nSeconds);
265
266 wxDbColDef *GetColDefs() { return colDefs; }
267 void SetColDefs(int index, const char *fieldName, int dataType, void *pData, int cType,
268 int size, bool keyField = FALSE, bool upd = TRUE,
269 bool insAllow = TRUE, bool derivedCol = FALSE);
270 wxDbColDataPtr *SetColDefs(wxDbColInf *colInfs, ULONG numCols);
271
272 bool CloseCursor(HSTMT cursor);
273 bool DeleteCursor(HSTMT *hstmtDel);
274 void SetCursor(HSTMT *hstmtActivate = (void **) wxDB_DEFAULT_CURSOR);
275 HSTMT GetCursor(void) { return(hstmt); }
276 HSTMT *GetNewCursor(bool setCursor = FALSE, bool bindColumns = TRUE);
277#if wxODBC_BACKWARD_COMPATABILITY
278// The following member function is deprecated. You should use the GetNewCursor
279 HSTMT *NewCursor(bool setCursor = FALSE, bool bindColumns = TRUE) { return GetNewCursor(setCursor,bindColumns); }
280#endif
281
282 ULONG Count(const char *args="*");
283 int DB_STATUS(void) { return(pDb->DB_STATUS); }
284
285 bool IsColNull(int colNo);
286 bool SetNull(int colNo);
287 bool SetNull(const char *colName);
a2115c88 288
154f22b3 289#ifdef __WXDEBUG__
f6bcfd97 290 ULONG GetTableID() { return tableID; }
a2115c88 291#endif
108106cf 292
f6bcfd97 293}; // wxDbTable
108106cf 294
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295
296// Change this to 0 to remove use of all deprecated functions
f6bcfd97 297#if wxODBC_BACKWARD_COMPATABILITY
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298//#################################################################################
299//############### DEPRECATED functions for backward compatability #################
300//#################################################################################
301
302// Backward compability. These will eventually go away
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303typedef wxDbTable wxTable;
304typedef wxDbIdxDef wxIdxDef;
305typedef wxDbIdxDef CidxDef;
306typedef wxDbColDef wxColDef;
307typedef wxDbColDef CcolDef;
308typedef wxDbColDataPtr wxColDataPtr;
309typedef wxDbColDataPtr CcolDataPtr;
310
311const int ROWID = wxDB_ROWID_LEN;
312const int DEFAULT_CURSOR = wxDB_DEFAULT_CURSOR;
313const bool QUERY_ONLY = wxDB_QUERY_ONLY;
314const bool DISABLE_VIEW = wxDB_DISABLE_VIEW;
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315#endif
316
108106cf 317#endif