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377
wxWidgets/include/wx/dbtable.h
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377
wxWidgets/include/wx/dbtable.h
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///////////////////////////////////////////////////////////////////////////////
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// Name: dbtable.h
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// Purpose: Declaration of the wxDbTable class.
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// Author: Doug Card
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// Modified by: George Tasker
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// Bart Jourquin
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// Mark Johnson
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// Created: 9.96
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// RCS-ID: $Id: dbtable.h 61872 2009-09-09 22:37:05Z VZ $
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// Copyright: (c) 1996 Remstar International, Inc.
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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/*
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// SYNOPSIS START
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// SYNOPSIS STOP
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*/
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#ifndef DBTABLE_DOT_H
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#define DBTABLE_DOT_H
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#include "wx/defs.h"
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#include "wx/db.h"
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#include "wx/variant.h"
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#include "wx/dbkeyg.h"
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const int wxDB_ROWID_LEN = 24; // 18 is the max, 24 is in case it gets larger
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const int wxDB_DEFAULT_CURSOR = 0;
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const bool wxDB_QUERY_ONLY = true;
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const bool wxDB_DISABLE_VIEW = true;
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// Used to indicate end of a variable length list of
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// column numbers passed to member functions
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const int wxDB_NO_MORE_COLUMN_NUMBERS = -1;
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// The following class is used to define a column of a table.
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// The wxDbTable constructor will dynamically allocate as many of
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// these as there are columns in the table. The class derived
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// from wxDbTable must initialize these column definitions in it's
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// constructor. These column definitions provide inf. to the
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// wxDbTable class which allows it to create a table in the data
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// source, exchange data between the data source and the C++
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// object, and so on.
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class WXDLLIMPEXP_ODBC wxDbColDef
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{
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public:
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wxChar ColName[DB_MAX_COLUMN_NAME_LEN+1]; // Column Name
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int DbDataType; // Logical Data Type; e.g. DB_DATA_TYPE_INTEGER
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SWORD SqlCtype; // C data type; e.g. SQL_C_LONG
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void *PtrDataObj; // Address of the data object
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int SzDataObj; // Size, in bytes, of the data object
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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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bool Updateable; // Specifies whether this column is updateable
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bool InsertAllowed; // Specifies whether this column should be included in an INSERT statement
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bool DerivedCol; // Specifies whether this column is a derived value
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SQLLEN CbValue; // Internal use only!!!
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bool Null; // NOT FULLY IMPLEMENTED - Allows NULL values in Inserts and Updates
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wxDbColDef();
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bool Initialize();
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}; // wxDbColDef
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class WXDLLIMPEXP_ODBC wxDbColDataPtr
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{
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public:
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void *PtrDataObj;
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int SzDataObj;
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SWORD SqlCtype;
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}; // wxDbColDataPtr
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// This structure is used when creating secondary indexes.
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class WXDLLIMPEXP_ODBC wxDbIdxDef
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{
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public:
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wxChar ColName[DB_MAX_COLUMN_NAME_LEN+1];
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bool Ascending;
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}; // wxDbIdxDef
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class WXDLLIMPEXP_ODBC wxDbTable
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{
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private:
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ULONG tableID; // Used for debugging. This can help to match up mismatched constructors/destructors
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// Private member variables
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UDWORD cursorType;
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bool insertable;
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// Private member functions
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bool initialize(wxDb *pwxDb, const wxString &tblName, const UWORD numColumns,
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const wxString &qryTblName, bool qryOnly, const wxString &tblPath);
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void cleanup();
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void setCbValueForColumn(int columnIndex);
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bool bindParams(bool forUpdate); // called by the other 'bind' functions
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bool bindInsertParams(void);
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bool bindUpdateParams(void);
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bool bindCols(HSTMT cursor);
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bool getRec(UWORD fetchType);
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bool execDelete(const wxString &pSqlStmt);
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bool execUpdate(const wxString &pSqlStmt);
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bool query(int queryType, bool forUpdate, bool distinct, const wxString &pSqlStmt=wxEmptyString);
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#if !wxODBC_BACKWARD_COMPATABILITY
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// these were public
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// Where, Order By and From clauses
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wxString where; // Standard SQL where clause, minus the word WHERE
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wxString orderBy; // Standard SQL order by clause, minus the ORDER BY
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wxString from; // Allows for joins in a wxDbTable::Query(). Format: ",tbl,tbl..."
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// ODBC Handles
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HENV henv; // ODBC Environment handle
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HDBC hdbc; // ODBC DB Connection handle
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HSTMT hstmt; // ODBC Statement handle
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HSTMT *hstmtDefault; // Default cursor
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HSTMT hstmtInsert; // ODBC Statement handle used specifically for inserts
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HSTMT hstmtDelete; // ODBC Statement handle used specifically for deletes
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HSTMT hstmtUpdate; // ODBC Statement handle used specifically for updates
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HSTMT hstmtInternal; // ODBC Statement handle used internally only
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HSTMT *hstmtCount; // ODBC Statement handle used by Count() function (No binding of columns)
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// Flags
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bool selectForUpdate;
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// Pointer to the database object this table belongs to
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wxDb *pDb;
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// Table Inf.
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wxString tablePath; // needed for dBase tables
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wxString tableName; // Table name
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wxString queryTableName; // Query Table Name
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UWORD m_numCols; // # of columns in the table
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bool queryOnly; // Query Only, no inserts, updates or deletes
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// Column Definitions
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wxDbColDef *colDefs; // Array of wxDbColDef structures
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#endif
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public:
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#if wxODBC_BACKWARD_COMPATABILITY
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// Where, Order By and From clauses
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char *where; // Standard SQL where clause, minus the word WHERE
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char *orderBy; // Standard SQL order by clause, minus the ORDER BY
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char *from; // Allows for joins in a wxDbTable::Query(). Format: ",tbl,tbl..."
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// ODBC Handles
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HENV henv; // ODBC Environment handle
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HDBC hdbc; // ODBC DB Connection handle
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HSTMT hstmt; // ODBC Statement handle
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HSTMT *hstmtDefault; // Default cursor
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HSTMT hstmtInsert; // ODBC Statement handle used specifically for inserts
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HSTMT hstmtDelete; // ODBC Statement handle used specifically for deletes
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HSTMT hstmtUpdate; // ODBC Statement handle used specifically for updates
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HSTMT hstmtInternal; // ODBC Statement handle used internally only
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HSTMT *hstmtCount; // ODBC Statement handle used by Count() function (No binding of columns)
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// Flags
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bool selectForUpdate;
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// Pointer to the database object this table belongs to
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wxDb *pDb;
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// Table Inf.
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char tablePath[wxDB_PATH_MAX]; // needed for dBase tables
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char tableName[DB_MAX_TABLE_NAME_LEN+1]; // Table name
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char queryTableName[DB_MAX_TABLE_NAME_LEN+1]; // Query Table Name
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UWORD m_numCols; // # of columns in the table
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bool queryOnly; // Query Only, no inserts, updates or deletes
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// Column Definitions
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wxDbColDef *colDefs; // Array of wxDbColDef structures
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#endif
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// Public member functions
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wxDbTable(wxDb *pwxDb, const wxString &tblName, const UWORD numColumns,
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const wxString &qryTblName=wxEmptyString, bool qryOnly = !wxDB_QUERY_ONLY,
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const wxString &tblPath=wxEmptyString);
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#if WXWIN_COMPATIBILITY_2_4
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wxDEPRECATED(
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wxDbTable(wxDb *pwxDb, const wxString &tblName, const UWORD numColumns,
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const wxChar *qryTblName, bool qryOnly,
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const wxString &tblPath)
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);
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#endif // WXWIN_COMPATIBILITY_2_4
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virtual ~wxDbTable();
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bool Open(bool checkPrivileges=false, bool checkTableExists=true);
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bool CreateTable(bool attemptDrop=true);
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bool DropTable(void);
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bool CreateIndex(const wxString &indexName, bool unique, UWORD numIndexColumns,
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wxDbIdxDef *pIndexDefs, bool attemptDrop=true);
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bool DropIndex(const wxString &indexName);
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// Accessors
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// The member variables returned by these accessors are all
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// set when the wxDbTable instance is created and cannot be
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// changed, hence there is no corresponding SetXxxx function
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wxDb *GetDb() { return pDb; }
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const wxString &GetTableName() { return tableName; }
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const wxString &GetQueryTableName() { return queryTableName; }
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const wxString &GetTablePath() { return tablePath; }
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UWORD GetNumberOfColumns() { return m_numCols; } // number of "defined" columns for this wxDbTable instance
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const wxString &GetFromClause() { return from; }
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const wxString &GetOrderByClause() { return orderBy; }
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const wxString &GetWhereClause() { return where; }
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bool IsQueryOnly() { return queryOnly; }
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#if wxODBC_BACKWARD_COMPATABILITY
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void SetFromClause(const char *From) { from = (char *)From; }
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void SetOrderByClause(const char *OrderBy) { orderBy = (char *)OrderBy; }
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void SetWhereClause(const char *Where) { where = (char *)Where; }
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#else
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void SetFromClause(const wxString &From) { from = From; }
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void SetOrderByClause(const wxString &OrderBy) { orderBy = OrderBy; }
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bool SetOrderByColNums(UWORD first, ...);
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void SetWhereClause(const wxString &Where) { where = Where; }
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void From(const wxString &From) { from = From; }
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void OrderBy(const wxString &OrderBy) { orderBy = OrderBy; }
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void Where(const wxString &Where) { where = Where; }
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const wxString &Where() { return where; }
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const wxString &OrderBy() { return orderBy; }
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const wxString &From() { return from; }
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#endif
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int Insert(void);
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bool Update(void);
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bool Update(const wxString &pSqlStmt);
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bool UpdateWhere(const wxString &pWhereClause);
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bool Delete(void);
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bool DeleteWhere(const wxString &pWhereClause);
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bool DeleteMatching(void);
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virtual bool Query(bool forUpdate = false, bool distinct = false);
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bool QueryBySqlStmt(const wxString &pSqlStmt);
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bool QueryMatching(bool forUpdate = false, bool distinct = false);
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bool QueryOnKeyFields(bool forUpdate = false, bool distinct = false);
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bool Refresh(void);
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bool GetNext(void) { return(getRec(SQL_FETCH_NEXT)); }
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bool operator++(int) { return(getRec(SQL_FETCH_NEXT)); }
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/***** These four functions only work with wxDb instances that are defined *****
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***** as not being FwdOnlyCursors *****/
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bool GetPrev(void);
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bool operator--(int);
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bool GetFirst(void);
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bool GetLast(void);
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bool IsCursorClosedOnCommit(void);
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UWORD GetRowNum(void);
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void BuildSelectStmt(wxString &pSqlStmt, int typeOfSelect, bool distinct);
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void BuildSelectStmt(wxChar *pSqlStmt, int typeOfSelect, bool distinct);
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void BuildDeleteStmt(wxString &pSqlStmt, int typeOfDel, const wxString &pWhereClause=wxEmptyString);
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void BuildDeleteStmt(wxChar *pSqlStmt, int typeOfDel, const wxString &pWhereClause=wxEmptyString);
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void BuildUpdateStmt(wxString &pSqlStmt, int typeOfUpdate, const wxString &pWhereClause=wxEmptyString);
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void BuildUpdateStmt(wxChar *pSqlStmt, int typeOfUpdate, const wxString &pWhereClause=wxEmptyString);
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void BuildWhereClause(wxString &pWhereClause, int typeOfWhere, const wxString &qualTableName=wxEmptyString, bool useLikeComparison=false);
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void BuildWhereClause(wxChar *pWhereClause, int typeOfWhere, const wxString &qualTableName=wxEmptyString, bool useLikeComparison=false);
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#if wxODBC_BACKWARD_COMPATABILITY
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// The following member functions are deprecated. You should use the BuildXxxxxStmt functions (above)
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void GetSelectStmt(char *pSqlStmt, int typeOfSelect, bool distinct)
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{ BuildSelectStmt(pSqlStmt,typeOfSelect,distinct); }
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void GetDeleteStmt(char *pSqlStmt, int typeOfDel, const char *pWhereClause = NULL)
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{ BuildDeleteStmt(pSqlStmt,typeOfDel,pWhereClause); }
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void GetUpdateStmt(char *pSqlStmt, int typeOfUpdate, const char *pWhereClause = NULL)
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{ BuildUpdateStmt(pSqlStmt,typeOfUpdate,pWhereClause); }
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void GetWhereClause(char *pWhereClause, int typeOfWhere,
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const char *qualTableName = NULL, bool useLikeComparison=false)
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{ BuildWhereClause(pWhereClause,typeOfWhere,qualTableName,useLikeComparison); }
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#endif
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bool CanSelectForUpdate(void);
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#if wxODBC_BACKWARD_COMPATABILITY
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bool CanUpdByROWID(void) { return CanUpdateByRowID(); };
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#endif
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bool CanUpdateByROWID(void);
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void ClearMemberVar(UWORD colNumber, bool setToNull=false);
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void ClearMemberVars(bool setToNull=false);
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bool SetQueryTimeout(UDWORD nSeconds);
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wxDbColDef *GetColDefs() { return colDefs; }
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bool SetColDefs(UWORD index, const wxString &fieldName, int dataType,
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void *pData, SWORD cType,
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int size, bool keyField = false, bool updateable = true,
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bool insertAllowed = true, bool derivedColumn = false);
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wxDbColDataPtr *SetColDefs(wxDbColInf *colInfs, UWORD numCols);
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bool CloseCursor(HSTMT cursor);
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bool DeleteCursor(HSTMT *hstmtDel);
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void SetCursor(HSTMT *hstmtActivate = (void **) wxDB_DEFAULT_CURSOR);
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HSTMT GetCursor(void) { return(hstmt); }
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HSTMT *GetNewCursor(bool setCursor = false, bool bindColumns = true);
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#if wxODBC_BACKWARD_COMPATABILITY
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// The following member function is deprecated. You should use the GetNewCursor
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HSTMT *NewCursor(bool setCursor = false, bool bindColumns = true) { return GetNewCursor(setCursor,bindColumns); }
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#endif
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ULONG Count(const wxString &args=wxT("*"));
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int DB_STATUS(void) { return(pDb->DB_STATUS); }
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bool IsColNull(UWORD colNumber) const;
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bool SetColNull(UWORD colNumber, bool set=true);
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bool SetColNull(const wxString &colName, bool set=true);
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#if wxODBC_BACKWARD_COMPATABILITY
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// The following member functions are deprecated. You should use the SetColNull()
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bool SetNull(int colNumber, bool set=true) { return (SetNull(colNumber,set)); }
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bool SetNull(const char *colName, bool set=true) { return (SetNull(colName,set)); }
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#endif
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#ifdef __WXDEBUG__
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ULONG GetTableID() { return tableID; }
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#endif
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//TODO: Need to Document
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typedef enum { WX_ROW_MODE_QUERY , WX_ROW_MODE_INDIVIDUAL } rowmode_t;
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virtual void SetRowMode(const rowmode_t rowmode);
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#if wxODBC_BACKWARD_COMPATABILITY
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virtual wxVariant GetCol(const int colNumber) const { return GetColumn(colNumber); };
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virtual void SetCol(const int colNumber, const wxVariant value) { return SetColumn(colNumber, value); };
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#endif
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virtual wxVariant GetColumn(const int colNumber) const ;
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virtual void SetColumn(const int colNumber, const wxVariant value);
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virtual GenericKey GetKey(void);
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virtual void SetKey(const GenericKey &key);
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private:
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HSTMT *m_hstmtGridQuery;
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rowmode_t m_rowmode;
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size_t m_keysize;
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// typedef enum {unmodified=0, UpdatePending, InsertPending } recStatus;
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// recStatus get_ModifiedStatus() { return m_recstatus; }
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// void modify() {
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// if (m_recstatus==unmodified)
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// m_recstatus=UpdatePending;
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// }
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// protected:
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// void insertify() {m_recstatus=InsertPending; }
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// void unmodify() {m_recstatus=unmodified; }
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// recStatus m_recstatus;
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//TODO: Need to Document
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}; // wxDbTable
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// Change this to 0 to remove use of all deprecated functions
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#if wxODBC_BACKWARD_COMPATABILITY
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//#################################################################################
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//############### DEPRECATED functions for backward compatibility #################
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//#################################################################################
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// Backward compability. These will eventually go away
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typedef wxDbTable wxTable;
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typedef wxDbIdxDef wxIdxDef;
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typedef wxDbIdxDef CidxDef;
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typedef wxDbColDef wxColDef;
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typedef wxDbColDef CcolDef;
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typedef wxDbColDataPtr wxColDataPtr;
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typedef wxDbColDataPtr CcolDataPtr;
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const int ROWID = wxDB_ROWID_LEN;
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const int DEFAULT_CURSOR = wxDB_DEFAULT_CURSOR;
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const bool QUERY_ONLY = wxDB_QUERY_ONLY;
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const bool DISABLE_VIEW = wxDB_DISABLE_VIEW;
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#endif
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#endif
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