95ca6a20b5
Added SQL_LOG_FILENAME and SQL_CATALOG_FILENAME constants to remove embedded text filenames git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5754 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
216 lines
8.7 KiB
C++
216 lines
8.7 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: dbtable.h
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// Purpose: Declaration of the wxTable class.
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// Author: Doug Card
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// Modified by: George Tasker
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// Created: 9.96
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// RCS-ID: $Id$
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// Copyright: (c) 1996 Remstar International, Inc.
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// Licence: wxWindows licence, plus:
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// Notice: This class library and its intellectual design are free of charge for use,
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// modification, enhancement, debugging under the following conditions:
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// 1) These classes may only be used as part of the implementation of a
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// wxWindows-based application
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// 2) All enhancements and bug fixes are to be submitted back to the wxWindows
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// user groups free of all charges for use with the wxWindows library.
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// 3) These classes may not be distributed as part of any other class library,
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// DLL, text (written or electronic), other than a complete distribution of
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// the wxWindows GUI development toolkit.
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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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// Use this line for wxWindows v1.x
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//#include "wx_ver.h"
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// Use this line for wxWindows v2.x
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#include "wx/version.h"
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#if wxMAJOR_VERSION == 2
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#ifdef __GNUG__
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#pragma interface "dbtable.h"
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#endif
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#endif
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#if wxMAJOR_VERSION == 2
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#include "wx/db.h"
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#else
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#include "db.h"
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#endif
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const int ROWID_LEN = 24; // 18 is the max, 24 is in case it gets larger
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const int DEFAULT_CURSOR = 0;
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const bool QUERY_ONLY = TRUE;
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const bool DISABLE_VIEW = TRUE;
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// The following class is used to define a column of a table.
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// The wxTable 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 wxTable must initialize these column definitions in it's
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// constructor. These column definitions provide inf. to the
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// wxTable 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 WXDLLEXPORT wxColDef
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{
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public:
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char 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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int 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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SDWORD CbValue; // Internal use only!!!
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bool Null; // NOT FULLY IMPLEMENTED - Allows NULL values in Inserts and Updates
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}; // wxColDef
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class WXDLLEXPORT wxColDataPtr
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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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int SqlCtype;
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}; // wxColDataPtr
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// Backward compability for Remstar classes. These
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// will eventually go away, so the wxColXxxx classes
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// should be used
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typedef wxColDef CcolDef;
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typedef wxColDataPtr CcolDataPtr;
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// This structure is used when creating secondary indexes.
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class WXDLLEXPORT CidxDef
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{
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public:
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char ColName[DB_MAX_COLUMN_NAME_LEN+1];
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bool Ascending;
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}; // CidxDef
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class WXDLLEXPORT wxTable
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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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// Private member 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 char *pSqlStmt);
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bool execUpdate(const char *pSqlStmt);
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bool query(int queryType, bool forUpdate, bool distinct, char *pSqlStmt = 0);
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public:
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// Pointer to the database object this table belongs to
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wxDB *pDb;
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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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// Table Inf.
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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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int noCols; // # of columns in the table
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bool queryOnly; // Query Only, no inserts, updates or deletes
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char tablePath[DB_PATH_MAX]; // needed for dBase tables
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// Column Definitions
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wxColDef *colDefs; // Array of wxColDef structures
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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 wxTable::Query(). Format: ",tbl,tbl..."
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// Flags
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bool selectForUpdate;
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// Public member functions
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wxTable(wxDB *pwxDB, const char *tblName, const int nCols,
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const char *qryTblName = 0, bool qryOnly = !QUERY_ONLY, const char *tblPath=NULL);
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virtual ~wxTable();
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bool Open(void);
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bool CreateTable(bool attemptDrop=TRUE);
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bool DropTable(void);
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bool CreateIndex(const char * idxName, bool unique, int noIdxCols, CidxDef *pIdxDefs, bool attemptDrop=TRUE);
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bool DropIndex(const char * idxName);
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bool CloseCursor(HSTMT cursor);
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int Insert(void);
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bool Update(void);
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bool Update(const char *pSqlStmt);
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bool UpdateWhere(const char *pWhereClause);
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bool Delete(void);
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bool DeleteWhere(const char *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(char *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 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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bool IsColNull(int colNo);
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UWORD GetRowNum(void);
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void GetSelectStmt(char *pSqlStmt, int typeOfSelect, bool distinct);
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void GetDeleteStmt(char *pSqlStmt, int typeOfDel, const char *pWhereClause = 0);
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void GetUpdateStmt(char *pSqlStmt, int typeOfUpd, const char *pWhereClause = 0);
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void GetWhereClause(char *pWhereClause, int typeOfWhere, const char *qualTableName = 0);
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bool CanSelectForUpdate(void);
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bool CanUpdByROWID(void);
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void ClearMemberVars(void);
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bool SetQueryTimeout(UDWORD nSeconds);
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void SetColDefs (int index, const char *fieldName, int dataType, void *pData, int cType,
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int size, bool keyField = FALSE, bool upd = TRUE,
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bool insAllow = TRUE, bool derivedCol = FALSE);
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wxColDataPtr* SetColDefs (wxColInf *colInfs, ULONG numCols);
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HSTMT *NewCursor(bool setCursor = FALSE, bool bindColumns = TRUE);
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bool DeleteCursor(HSTMT *hstmtDel);
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void SetCursor(HSTMT *hstmtActivate = (void **) DEFAULT_CURSOR);
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HSTMT GetCursor(void) { return(hstmt); }
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ULONG Count(const char *args="*");
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int DB_STATUS(void) { return(pDb->DB_STATUS); }
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bool Refresh(void);
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bool SetNull(int colNo);
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bool SetNull(const char *colName);
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#ifdef __WXDEBUG__
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ULONG GetTableID() { return tableID; };
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#endif
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}; // wxTable
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#endif
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