3ca6a5f046
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@7973 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
318 lines
14 KiB
C++
318 lines
14 KiB
C++
///////////////////////////////////////////////////////////////////////////////
|
|
// Name: dbtable.h
|
|
// Purpose: Declaration of the wxDbTable class.
|
|
// Author: Doug Card
|
|
// Modified by: George Tasker
|
|
// Bart Jourquin
|
|
// Mark Johnson
|
|
// Created: 9.96
|
|
// RCS-ID: $Id$
|
|
// Copyright: (c) 1996 Remstar International, Inc.
|
|
// Licence: wxWindows licence, plus:
|
|
// Notice: This class library and its intellectual design are free of charge for use,
|
|
// modification, enhancement, debugging under the following conditions:
|
|
// 1) These classes may only be used as part of the implementation of a
|
|
// wxWindows-based application
|
|
// 2) All enhancements and bug fixes are to be submitted back to the wxWindows
|
|
// user groups free of all charges for use with the wxWindows library.
|
|
// 3) These classes may not be distributed as part of any other class library,
|
|
// DLL, text (written or electronic), other than a complete distribution of
|
|
// the wxWindows GUI development toolkit.
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
/*
|
|
// SYNOPSIS START
|
|
// SYNOPSIS STOP
|
|
*/
|
|
|
|
#ifndef DBTABLE_DOT_H
|
|
#define DBTABLE_DOT_H
|
|
|
|
// Use this line for wxWindows v1.x
|
|
//#include "wx_ver.h"
|
|
// Use this line for wxWindows v2.x
|
|
#include "wx/version.h"
|
|
|
|
#if wxMAJOR_VERSION == 2
|
|
#ifdef __GNUG__
|
|
#pragma interface "dbtable.h"
|
|
#endif
|
|
#endif
|
|
|
|
#if wxMAJOR_VERSION == 2
|
|
#include "wx/db.h"
|
|
#else
|
|
#include "db.h"
|
|
#endif
|
|
|
|
const int wxDB_ROWID_LEN = 24; // 18 is the max, 24 is in case it gets larger
|
|
const int wxDB_DEFAULT_CURSOR = 0;
|
|
const bool wxDB_QUERY_ONLY = TRUE;
|
|
const bool wxDB_DISABLE_VIEW = TRUE;
|
|
|
|
// The following class is used to define a column of a table.
|
|
// The wxDbTable constructor will dynamically allocate as many of
|
|
// these as there are columns in the table. The class derived
|
|
// from wxDbTable must initialize these column definitions in it's
|
|
// constructor. These column definitions provide inf. to the
|
|
// wxDbTable class which allows it to create a table in the data
|
|
// source, exchange data between the data source and the C++
|
|
// object, and so on.
|
|
class WXDLLEXPORT wxDbColDef
|
|
{
|
|
public:
|
|
char ColName[DB_MAX_COLUMN_NAME_LEN+1]; // Column Name
|
|
int DbDataType; // Logical Data Type; e.g. DB_DATA_TYPE_INTEGER
|
|
int SqlCtype; // C data type; e.g. SQL_C_LONG
|
|
void *PtrDataObj; // Address of the data object
|
|
int SzDataObj; // Size, in bytes, of the data object
|
|
bool KeyField; // TRUE if this column is part of the PRIMARY KEY to the table; Date fields should NOT be KeyFields.
|
|
bool Updateable; // Specifies whether this column is updateable
|
|
bool InsertAllowed; // Specifies whether this column should be included in an INSERT statement
|
|
bool DerivedCol; // Specifies whether this column is a derived value
|
|
SDWORD CbValue; // Internal use only!!!
|
|
bool Null; // NOT FULLY IMPLEMENTED - Allows NULL values in Inserts and Updates
|
|
}; // wxDbColDef
|
|
|
|
|
|
class WXDLLEXPORT wxDbColDataPtr
|
|
{
|
|
public:
|
|
void *PtrDataObj;
|
|
int SzDataObj;
|
|
int SqlCtype;
|
|
}; // wxDbColDataPtr
|
|
|
|
|
|
// This structure is used when creating secondary indexes.
|
|
class WXDLLEXPORT wxDbIdxDef
|
|
{
|
|
public:
|
|
char ColName[DB_MAX_COLUMN_NAME_LEN+1];
|
|
bool Ascending;
|
|
}; // wxDbIdxDef
|
|
|
|
|
|
class WXDLLEXPORT wxDbTable
|
|
{
|
|
private:
|
|
ULONG tableID; // Used for debugging. This can help to match up mismatched constructors/destructors
|
|
|
|
// Private member variables
|
|
UDWORD cursorType;
|
|
bool insertable;
|
|
|
|
// Private member functions
|
|
bool bindInsertParams(void);
|
|
bool bindUpdateParams(void);
|
|
bool bindCols(HSTMT cursor);
|
|
bool getRec(UWORD fetchType);
|
|
bool execDelete(const char *pSqlStmt);
|
|
bool execUpdate(const char *pSqlStmt);
|
|
bool query(int queryType, bool forUpdate, bool distinct, const char *pSqlStmt = 0);
|
|
|
|
#if !wxODBC_BACKWARD_COMPATABILITY
|
|
// these were public
|
|
// Where, Order By and From clauses
|
|
wxString where; // Standard SQL where clause, minus the word WHERE
|
|
wxString orderBy; // Standard SQL order by clause, minus the ORDER BY
|
|
wxString from; // Allows for joins in a wxDbTable::Query(). Format: ",tbl,tbl..."
|
|
|
|
// ODBC Handles
|
|
HENV henv; // ODBC Environment handle
|
|
HDBC hdbc; // ODBC DB Connection handle
|
|
HSTMT hstmt; // ODBC Statement handle
|
|
HSTMT *hstmtDefault; // Default cursor
|
|
HSTMT hstmtInsert; // ODBC Statement handle used specifically for inserts
|
|
HSTMT hstmtDelete; // ODBC Statement handle used specifically for deletes
|
|
HSTMT hstmtUpdate; // ODBC Statement handle used specifically for updates
|
|
HSTMT hstmtInternal; // ODBC Statement handle used internally only
|
|
HSTMT *hstmtCount; // ODBC Statement handle used by Count() function (No binding of columns)
|
|
|
|
// Flags
|
|
bool selectForUpdate;
|
|
|
|
// Pointer to the database object this table belongs to
|
|
wxDb *pDb;
|
|
|
|
// Table Inf.
|
|
char tablePath[wxDB_PATH_MAX]; // needed for dBase tables
|
|
char tableName[DB_MAX_TABLE_NAME_LEN+1]; // Table name
|
|
char queryTableName[DB_MAX_TABLE_NAME_LEN+1]; // Query Table Name
|
|
int noCols; // # of columns in the table
|
|
bool queryOnly; // Query Only, no inserts, updates or deletes
|
|
|
|
// Column Definitions
|
|
wxDbColDef *colDefs; // Array of wxDbColDef structures
|
|
#endif
|
|
public:
|
|
#if wxODBC_BACKWARD_COMPATABILITY
|
|
// Where, Order By and From clauses
|
|
char *where; // Standard SQL where clause, minus the word WHERE
|
|
char *orderBy; // Standard SQL order by clause, minus the ORDER BY
|
|
char *from; // Allows for joins in a wxDbTable::Query(). Format: ",tbl,tbl..."
|
|
|
|
// ODBC Handles
|
|
HENV henv; // ODBC Environment handle
|
|
HDBC hdbc; // ODBC DB Connection handle
|
|
HSTMT hstmt; // ODBC Statement handle
|
|
HSTMT *hstmtDefault; // Default cursor
|
|
HSTMT hstmtInsert; // ODBC Statement handle used specifically for inserts
|
|
HSTMT hstmtDelete; // ODBC Statement handle used specifically for deletes
|
|
HSTMT hstmtUpdate; // ODBC Statement handle used specifically for updates
|
|
HSTMT hstmtInternal; // ODBC Statement handle used internally only
|
|
HSTMT *hstmtCount; // ODBC Statement handle used by Count() function (No binding of columns)
|
|
|
|
// Flags
|
|
bool selectForUpdate;
|
|
|
|
// Pointer to the database object this table belongs to
|
|
wxDb *pDb;
|
|
|
|
// Table Inf.
|
|
char tablePath[wxDB_PATH_MAX]; // needed for dBase tables
|
|
char tableName[DB_MAX_TABLE_NAME_LEN+1]; // Table name
|
|
char queryTableName[DB_MAX_TABLE_NAME_LEN+1]; // Query Table Name
|
|
int noCols; // # of columns in the table
|
|
bool queryOnly; // Query Only, no inserts, updates or deletes
|
|
|
|
// Column Definitions
|
|
wxDbColDef *colDefs; // Array of wxDbColDef structures
|
|
#endif
|
|
// Public member functions
|
|
wxDbTable(wxDb *pwxDb, const char *tblName, const int nCols,
|
|
const char *qryTblName = 0, bool qryOnly = !wxDB_QUERY_ONLY, const char *tblPath=NULL);
|
|
virtual ~wxDbTable();
|
|
|
|
bool Open(void);
|
|
bool CreateTable(bool attemptDrop=TRUE);
|
|
bool DropTable(void);
|
|
bool CreateIndex(const char * idxName, bool unique, int noIdxCols, wxDbIdxDef *pIdxDefs, bool attemptDrop=TRUE);
|
|
bool DropIndex(const char * idxName);
|
|
|
|
// Accessors
|
|
|
|
// The member variables returned by these accessors are all
|
|
// set when the wxDbTable instance is createand cannot be
|
|
// changed, hence there is no corresponding SetXxxx function
|
|
wxDb *GetDb() { return pDb; }
|
|
const char *GetTableName() { return tableName; }
|
|
const char *GetQueryTableName() { return queryTableName; }
|
|
const char *GetTablePath() { return tablePath; }
|
|
|
|
int GetNumberOfColumns() { return noCols; } // number of "defined" columns for this wxDbTable instance
|
|
|
|
|
|
const char *GetFromClause() { return from; }
|
|
const char *GetOrderByClause() { return orderBy; }
|
|
const char *GetWhereClause() { return where; }
|
|
|
|
bool IsQueryOnly() { return queryOnly; }
|
|
#if wxODBC_BACKWARD_COMPATABILITY
|
|
void SetFromClause(const char *From) { from = (char *)From; }
|
|
void SetOrderByClause(const char *OrderBy) { orderBy = (char *)OrderBy; }
|
|
void SetWhereClause(const char *Where) { where = (char *)Where; }
|
|
#else
|
|
void SetFromClause(const wxString& From) { from = From; }
|
|
void SetOrderByClause(const wxString& OrderBy) { orderBy = OrderBy; }
|
|
void SetWhereClause(const wxString& Where) { where = Where; }
|
|
#endif
|
|
int Insert(void);
|
|
bool Update(void);
|
|
bool Update(const char *pSqlStmt);
|
|
bool UpdateWhere(const char *pWhereClause);
|
|
bool Delete(void);
|
|
bool DeleteWhere(const char *pWhereClause);
|
|
bool DeleteMatching(void);
|
|
virtual bool Query(bool forUpdate = FALSE, bool distinct = FALSE);
|
|
bool QueryBySqlStmt(const char *pSqlStmt);
|
|
bool QueryMatching(bool forUpdate = FALSE, bool distinct = FALSE);
|
|
bool QueryOnKeyFields(bool forUpdate = FALSE, bool distinct = FALSE);
|
|
bool Refresh(void);
|
|
bool GetNext(void) { return(getRec(SQL_FETCH_NEXT)); }
|
|
bool operator++(int) { return(getRec(SQL_FETCH_NEXT)); }
|
|
|
|
/***** These four functions only work with wxDb instances that are defined *****
|
|
***** as not being FwdOnlyCursors *****/
|
|
bool GetPrev(void);
|
|
bool operator--(int);
|
|
bool GetFirst(void);
|
|
bool GetLast(void);
|
|
|
|
bool IsCursorClosedOnCommit(void);
|
|
UWORD GetRowNum(void);
|
|
|
|
void BuildSelectStmt(char *pSqlStmt, int typeOfSelect, bool distinct);
|
|
void BuildDeleteStmt(char *pSqlStmt, int typeOfDel, const char *pWhereClause = 0);
|
|
void BuildUpdateStmt(char *pSqlStmt, int typeOfUpd, const char *pWhereClause = 0);
|
|
void BuildWhereClause(char *pWhereClause, int typeOfWhere, const char *qualTableName = 0, bool useLikeComparison=FALSE);
|
|
#if wxODBC_BACKWARD_COMPATABILITY
|
|
// The following member functions are deprecated. You should use the BuildXxxxxStmt functions (above)
|
|
void GetSelectStmt(char *pSqlStmt, int typeOfSelect, bool distinct)
|
|
{ BuildSelectStmt(pSqlStmt,typeOfSelect,distinct); }
|
|
void GetDeleteStmt(char *pSqlStmt, int typeOfDel, const char *pWhereClause = 0)
|
|
{ BuildDeleteStmt(pSqlStmt,typeOfDel,pWhereClause); }
|
|
void GetUpdateStmt(char *pSqlStmt, int typeOfUpd, const char *pWhereClause = 0)
|
|
{ BuildUpdateStmt(pSqlStmt,typeOfUpd,pWhereClause); }
|
|
void GetWhereClause(char *pWhereClause, int typeOfWhere,
|
|
const char *qualTableName = 0, bool useLikeComparison=FALSE)
|
|
{ BuildWhereClause(pWhereClause,typeOfWhere,qualTableName,useLikeComparison); }
|
|
#endif
|
|
bool CanSelectForUpdate(void);
|
|
bool CanUpdByROWID(void);
|
|
void ClearMemberVars(void);
|
|
bool SetQueryTimeout(UDWORD nSeconds);
|
|
|
|
wxDbColDef *GetColDefs() { return colDefs; }
|
|
void SetColDefs(int index, const char *fieldName, int dataType, void *pData, int cType,
|
|
int size, bool keyField = FALSE, bool upd = TRUE,
|
|
bool insAllow = TRUE, bool derivedCol = FALSE);
|
|
wxDbColDataPtr *SetColDefs(wxDbColInf *colInfs, ULONG numCols);
|
|
|
|
bool CloseCursor(HSTMT cursor);
|
|
bool DeleteCursor(HSTMT *hstmtDel);
|
|
void SetCursor(HSTMT *hstmtActivate = (void **) wxDB_DEFAULT_CURSOR);
|
|
HSTMT GetCursor(void) { return(hstmt); }
|
|
HSTMT *GetNewCursor(bool setCursor = FALSE, bool bindColumns = TRUE);
|
|
#if wxODBC_BACKWARD_COMPATABILITY
|
|
// The following member function is deprecated. You should use the GetNewCursor
|
|
HSTMT *NewCursor(bool setCursor = FALSE, bool bindColumns = TRUE) { return GetNewCursor(setCursor,bindColumns); }
|
|
#endif
|
|
|
|
ULONG Count(const char *args="*");
|
|
int DB_STATUS(void) { return(pDb->DB_STATUS); }
|
|
|
|
bool IsColNull(int colNo);
|
|
bool SetNull(int colNo);
|
|
bool SetNull(const char *colName);
|
|
|
|
#ifdef __WXDEBUG__
|
|
ULONG GetTableID() { return tableID; }
|
|
#endif
|
|
|
|
}; // wxDbTable
|
|
|
|
|
|
// Change this to 0 to remove use of all deprecated functions
|
|
#if wxODBC_BACKWARD_COMPATABILITY
|
|
//#################################################################################
|
|
//############### DEPRECATED functions for backward compatability #################
|
|
//#################################################################################
|
|
|
|
// Backward compability. These will eventually go away
|
|
typedef wxDbTable wxTable;
|
|
typedef wxDbIdxDef wxIdxDef;
|
|
typedef wxDbIdxDef CidxDef;
|
|
typedef wxDbColDef wxColDef;
|
|
typedef wxDbColDef CcolDef;
|
|
typedef wxDbColDataPtr wxColDataPtr;
|
|
typedef wxDbColDataPtr CcolDataPtr;
|
|
|
|
const int ROWID = wxDB_ROWID_LEN;
|
|
const int DEFAULT_CURSOR = wxDB_DEFAULT_CURSOR;
|
|
const bool QUERY_ONLY = wxDB_QUERY_ONLY;
|
|
const bool DISABLE_VIEW = wxDB_DISABLE_VIEW;
|
|
#endif
|
|
|
|
#endif
|