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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:
4fdae997 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;
108106cf 52
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53// Used to indicate end of a variable length list of
54// column numbers passed to member functions
55const int wxDB_NO_MORE_COLUMN_NUMBERS = -1;
56
108106cf 57// The following class is used to define a column of a table.
f6bcfd97 58// The wxDbTable constructor will dynamically allocate as many of
108106cf 59// these as there are columns in the table. The class derived
f6bcfd97 60// from wxDbTable must initialize these column definitions in it's
108106cf 61// constructor. These column definitions provide inf. to the
f6bcfd97 62// wxDbTable class which allows it to create a table in the data
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63// source, exchange data between the data source and the C++
64// object, and so on.
f6bcfd97 65class WXDLLEXPORT wxDbColDef
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66{
67public:
4fdae997 68 wxChar ColName[DB_MAX_COLUMN_NAME_LEN+1]; // Column Name
95ca6a20 69 int DbDataType; // Logical Data Type; e.g. DB_DATA_TYPE_INTEGER
02cf6fdd 70 SWORD SqlCtype; // C data type; e.g. SQL_C_LONG
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71 void *PtrDataObj; // Address of the data object
72 int SzDataObj; // Size, in bytes, of the data object
73 bool KeyField; // TRUE if this column is part of the PRIMARY KEY to the table; Date fields should NOT be KeyFields.
74 bool Updateable; // Specifies whether this column is updateable
75 bool InsertAllowed; // Specifies whether this column should be included in an INSERT statement
76 bool DerivedCol; // Specifies whether this column is a derived value
77 SDWORD CbValue; // Internal use only!!!
78 bool Null; // NOT FULLY IMPLEMENTED - Allows NULL values in Inserts and Updates
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79
80 wxDbColDef();
81
82 bool Initialize();
f6bcfd97 83}; // wxDbColDef
30a6d2d2 84
95ca6a20 85
f6bcfd97 86class WXDLLEXPORT wxDbColDataPtr
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87{
88public:
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89 void *PtrDataObj;
90 int SzDataObj;
02cf6fdd 91 SWORD SqlCtype;
f6bcfd97 92}; // wxDbColDataPtr
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93
94
108106cf 95// This structure is used when creating secondary indexes.
f6bcfd97 96class WXDLLEXPORT wxDbIdxDef
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97{
98public:
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99 wxChar ColName[DB_MAX_COLUMN_NAME_LEN+1];
100 bool Ascending;
f6bcfd97 101}; // wxDbIdxDef
108106cf 102
95ca6a20 103
f6bcfd97 104class WXDLLEXPORT wxDbTable
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105{
106private:
3ca6a5f0 107 ULONG tableID; // Used for debugging. This can help to match up mismatched constructors/destructors
108106cf 108
95ca6a20 109 // Private member variables
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110 UDWORD cursorType;
111 bool insertable;
a2115c88 112
95ca6a20 113 // Private member functions
02cf6fdd 114 bool initialize(wxDb *pwxDb, const wxString &tblName, const UWORD numColumns,
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115 const wxString &qryTblName, bool qryOnly, const wxString &tblPath);
116 void cleanup();
117
118 bool bindParams(bool forUpdate); // called by the other 'bind' functions
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119 bool bindInsertParams(void);
120 bool bindUpdateParams(void);
4fdae997 121
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122 bool bindCols(HSTMT cursor);
123 bool getRec(UWORD fetchType);
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124 bool execDelete(const wxString &pSqlStmt);
125 bool execUpdate(const wxString &pSqlStmt);
da99271d 126 bool query(int queryType, bool forUpdate, bool distinct, const wxString &pSqlStmt=wxEmptyString);
108106cf 127
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128#if !wxODBC_BACKWARD_COMPATABILITY
129// these were public
130 // Where, Order By and From clauses
131 wxString where; // Standard SQL where clause, minus the word WHERE
132 wxString orderBy; // Standard SQL order by clause, minus the ORDER BY
133 wxString from; // Allows for joins in a wxDbTable::Query(). Format: ",tbl,tbl..."
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134
135 // ODBC Handles
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136 HENV henv; // ODBC Environment handle
137 HDBC hdbc; // ODBC DB Connection handle
138 HSTMT hstmt; // ODBC Statement handle
139 HSTMT *hstmtDefault; // Default cursor
140 HSTMT hstmtInsert; // ODBC Statement handle used specifically for inserts
141 HSTMT hstmtDelete; // ODBC Statement handle used specifically for deletes
142 HSTMT hstmtUpdate; // ODBC Statement handle used specifically for updates
143 HSTMT hstmtInternal; // ODBC Statement handle used internally only
144 HSTMT *hstmtCount; // ODBC Statement handle used by Count() function (No binding of columns)
95ca6a20 145
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146 // Flags
147 bool selectForUpdate;
95ca6a20 148
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149 // Pointer to the database object this table belongs to
150 wxDb *pDb;
95ca6a20 151
f6bcfd97 152 // Table Inf.
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153 wxString tablePath; // needed for dBase tables
154 wxString tableName; // Table name
155 wxString queryTableName; // Query Table Name
02cf6fdd 156 UWORD noCols; // # of columns in the table
f6bcfd97 157 bool queryOnly; // Query Only, no inserts, updates or deletes
95ca6a20 158
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159 // Column Definitions
160 wxDbColDef *colDefs; // Array of wxDbColDef structures
161#endif
162public:
163#if wxODBC_BACKWARD_COMPATABILITY
95ca6a20 164 // Where, Order By and From clauses
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165 char *where; // Standard SQL where clause, minus the word WHERE
166 char *orderBy; // Standard SQL order by clause, minus the ORDER BY
167 char *from; // Allows for joins in a wxDbTable::Query(). Format: ",tbl,tbl..."
168
169 // ODBC Handles
170 HENV henv; // ODBC Environment handle
171 HDBC hdbc; // ODBC DB Connection handle
172 HSTMT hstmt; // ODBC Statement handle
173 HSTMT *hstmtDefault; // Default cursor
174 HSTMT hstmtInsert; // ODBC Statement handle used specifically for inserts
175 HSTMT hstmtDelete; // ODBC Statement handle used specifically for deletes
176 HSTMT hstmtUpdate; // ODBC Statement handle used specifically for updates
177 HSTMT hstmtInternal; // ODBC Statement handle used internally only
178 HSTMT *hstmtCount; // ODBC Statement handle used by Count() function (No binding of columns)
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179
180 // Flags
f6bcfd97 181 bool selectForUpdate;
95ca6a20 182
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183 // Pointer to the database object this table belongs to
184 wxDb *pDb;
185
186 // Table Inf.
187 char tablePath[wxDB_PATH_MAX]; // needed for dBase tables
188 char tableName[DB_MAX_TABLE_NAME_LEN+1]; // Table name
189 char queryTableName[DB_MAX_TABLE_NAME_LEN+1]; // Query Table Name
02cf6fdd 190 UWORD noCols; // # of columns in the table
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191 bool queryOnly; // Query Only, no inserts, updates or deletes
192
193 // Column Definitions
194 wxDbColDef *colDefs; // Array of wxDbColDef structures
195#endif
95ca6a20 196 // Public member functions
02cf6fdd 197 wxDbTable(wxDb *pwxDb, const wxString &tblName, const UWORD numColumns,
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198 const wxString &qryTblName="", bool qryOnly = !wxDB_QUERY_ONLY,
199 const wxString &tblPath="");
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200
201 // DEPRECATED
02cf6fdd 202 wxDbTable(wxDb *pwxDb, const wxString &tblName, const UWORD numColumns,
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203 const wxChar *qryTblName="", bool qryOnly = !wxDB_QUERY_ONLY,
204 const wxString &tblPath="");
4fdae997 205
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206 virtual ~wxDbTable();
207
1454d4e6 208 bool Open(bool checkPrivileges=FALSE, bool checkTableExists=TRUE);
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209 bool CreateTable(bool attemptDrop=TRUE);
210 bool DropTable(void);
21e05269 211 bool CreateIndex(const wxString &idxName, bool unique, UWORD noIdxCols,
e7e5298c 212 wxDbIdxDef *pIdxDefs, bool attemptDrop=TRUE);
4fdae997 213 bool DropIndex(const wxString &idxName);
f6bcfd97 214
3ca6a5f0 215 // Accessors
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216
217 // The member variables returned by these accessors are all
1454d4e6 218 // set when the wxDbTable instance is created and cannot be
f6bcfd97 219 // changed, hence there is no corresponding SetXxxx function
3ca6a5f0 220 wxDb *GetDb() { return pDb; }
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221 const wxString &GetTableName() { return tableName; }
222 const wxString &GetQueryTableName() { return queryTableName; }
223 const wxString &GetTablePath() { return tablePath; }
f6bcfd97 224
02cf6fdd 225 UWORD GetNumberOfColumns() { return noCols; } // number of "defined" columns for this wxDbTable instance
f6bcfd97 226
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227 const wxString &GetFromClause() { return from; }
228 const wxString &GetOrderByClause() { return orderBy; }
229 const wxString &GetWhereClause() { return where; }
f6bcfd97 230
3ca6a5f0 231 bool IsQueryOnly() { return queryOnly; }
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232#if wxODBC_BACKWARD_COMPATABILITY
233 void SetFromClause(const char *From) { from = (char *)From; }
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234 void SetOrderByClause(const char *OrderBy) { orderBy = (char *)OrderBy; }
235 void SetWhereClause(const char *Where) { where = (char *)Where; }
f6bcfd97 236#else
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237 void SetFromClause(const wxString &From) { from = From; }
238 void SetOrderByClause(const wxString &OrderBy) { orderBy = OrderBy; }
e938ff5e 239 bool SetOrderByColNums(UWORD first, ...);
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240 void SetWhereClause(const wxString &Where) { where = Where; }
241 void From(const wxString &From) { from = From; }
242 void OrderBy(const wxString &OrderBy) { orderBy = OrderBy; }
243 void Where(const wxString &Where) { where = Where; }
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244 const wxString &Where() { return where; }
245 const wxString &OrderBy() { return orderBy; }
246 const wxString &From() { return from; }
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247#endif
248 int Insert(void);
249 bool Update(void);
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250 bool Update(const wxString &pSqlStmt);
251 bool UpdateWhere(const wxString &pWhereClause);
f6bcfd97 252 bool Delete(void);
4fdae997 253 bool DeleteWhere(const wxString &pWhereClause);
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254 bool DeleteMatching(void);
255 virtual bool Query(bool forUpdate = FALSE, bool distinct = FALSE);
4fdae997 256 bool QueryBySqlStmt(const wxString &pSqlStmt);
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257 bool QueryMatching(bool forUpdate = FALSE, bool distinct = FALSE);
258 bool QueryOnKeyFields(bool forUpdate = FALSE, bool distinct = FALSE);
259 bool Refresh(void);
260 bool GetNext(void) { return(getRec(SQL_FETCH_NEXT)); }
261 bool operator++(int) { return(getRec(SQL_FETCH_NEXT)); }
262
263 /***** These four functions only work with wxDb instances that are defined *****
95ca6a20 264 ***** as not being FwdOnlyCursors *****/
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265 bool GetPrev(void);
266 bool operator--(int);
267 bool GetFirst(void);
268 bool GetLast(void);
269
270 bool IsCursorClosedOnCommit(void);
271 UWORD GetRowNum(void);
272
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273 void BuildSelectStmt(wxString &pSqlStmt, int typeOfSelect, bool distinct);
274 void BuildSelectStmt(wxChar *pSqlStmt, int typeOfSelect, bool distinct);
275
276 void BuildDeleteStmt(wxString &pSqlStmt, int typeOfDel, const wxString &pWhereClause="");
277 void BuildDeleteStmt(wxChar *pSqlStmt, int typeOfDel, const wxString &pWhereClause="");
278
279 void BuildUpdateStmt(wxString &pSqlStmt, int typeOfUpd, const wxString &pWhereClause="");
280 void BuildUpdateStmt(wxChar *pSqlStmt, int typeOfUpd, const wxString &pWhereClause="");
281
282 void BuildWhereClause(wxString &pWhereClause, int typeOfWhere, const wxString &qualTableName="", bool useLikeComparison=FALSE);
283 void BuildWhereClause(wxChar *pWhereClause, int typeOfWhere, const wxString &qualTableName="", bool useLikeComparison=FALSE);
284
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285#if wxODBC_BACKWARD_COMPATABILITY
286// The following member functions are deprecated. You should use the BuildXxxxxStmt functions (above)
287 void GetSelectStmt(char *pSqlStmt, int typeOfSelect, bool distinct)
288 { BuildSelectStmt(pSqlStmt,typeOfSelect,distinct); }
2b63ff5d 289 void GetDeleteStmt(char *pSqlStmt, int typeOfDel, const char *pWhereClause = NULL)
f6bcfd97 290 { BuildDeleteStmt(pSqlStmt,typeOfDel,pWhereClause); }
2b63ff5d 291 void GetUpdateStmt(char *pSqlStmt, int typeOfUpd, const char *pWhereClause = NULL)
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292 { BuildUpdateStmt(pSqlStmt,typeOfUpd,pWhereClause); }
293 void GetWhereClause(char *pWhereClause, int typeOfWhere,
2b63ff5d 294 const char *qualTableName = NULL, bool useLikeComparison=FALSE)
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295 { BuildWhereClause(pWhereClause,typeOfWhere,qualTableName,useLikeComparison); }
296#endif
297 bool CanSelectForUpdate(void);
298 bool CanUpdByROWID(void);
e938ff5e 299 void ClearMemberVar(UWORD colNo, bool setToNull=FALSE);
f02d4a64 300 void ClearMemberVars(bool setToNull=FALSE);
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301 bool SetQueryTimeout(UDWORD nSeconds);
302
303 wxDbColDef *GetColDefs() { return colDefs; }
21e05269 304 void SetColDefs(UWORD index, const wxString &fieldName, int dataType,
02cf6fdd 305 void *pData, SWORD cType,
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306 int size, bool keyField = FALSE, bool upd = TRUE,
307 bool insAllow = TRUE, bool derivedCol = FALSE);
21e05269 308 wxDbColDataPtr *SetColDefs(wxDbColInf *colInfs, UWORD numCols);
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309
310 bool CloseCursor(HSTMT cursor);
311 bool DeleteCursor(HSTMT *hstmtDel);
312 void SetCursor(HSTMT *hstmtActivate = (void **) wxDB_DEFAULT_CURSOR);
313 HSTMT GetCursor(void) { return(hstmt); }
314 HSTMT *GetNewCursor(bool setCursor = FALSE, bool bindColumns = TRUE);
315#if wxODBC_BACKWARD_COMPATABILITY
316// The following member function is deprecated. You should use the GetNewCursor
317 HSTMT *NewCursor(bool setCursor = FALSE, bool bindColumns = TRUE) { return GetNewCursor(setCursor,bindColumns); }
318#endif
319
4fdae997 320 ULONG Count(const wxString &args="*");
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321 int DB_STATUS(void) { return(pDb->DB_STATUS); }
322
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323 bool IsColNull(UWORD colNo);
324 bool SetColNull(UWORD colNo, bool set=TRUE);
4fdae997 325 bool SetColNull(const wxString &colName, bool set=TRUE);
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326#if wxODBC_BACKWARD_COMPATABILITY
327// The following member functions are deprecated. You should use the SetColNull()
328 bool SetNull(int colNo, bool set=TRUE) { return (SetNull(colNo,set)); }
329 bool SetNull(const char *colName, bool set=TRUE) { return (SetNull(colName,set)); }
330#endif
154f22b3 331#ifdef __WXDEBUG__
f6bcfd97 332 ULONG GetTableID() { return tableID; }
a2115c88 333#endif
108106cf 334
f6bcfd97 335}; // wxDbTable
108106cf 336
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337
338// Change this to 0 to remove use of all deprecated functions
f6bcfd97 339#if wxODBC_BACKWARD_COMPATABILITY
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340//#################################################################################
341//############### DEPRECATED functions for backward compatability #################
342//#################################################################################
343
344// Backward compability. These will eventually go away
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345typedef wxDbTable wxTable;
346typedef wxDbIdxDef wxIdxDef;
347typedef wxDbIdxDef CidxDef;
348typedef wxDbColDef wxColDef;
349typedef wxDbColDef CcolDef;
350typedef wxDbColDataPtr wxColDataPtr;
351typedef wxDbColDataPtr CcolDataPtr;
352
353const int ROWID = wxDB_ROWID_LEN;
354const int DEFAULT_CURSOR = wxDB_DEFAULT_CURSOR;
355const bool QUERY_ONLY = wxDB_QUERY_ONLY;
356const bool DISABLE_VIEW = wxDB_DISABLE_VIEW;
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357#endif
358
108106cf 359#endif