+/********** wxDB::GetColumns() **********/
+wxColInf *wxDB::GetColumns(char *tableName, int *numCols, const char *userID)
+/*
+ * Same as the above GetColumns() function except this one gets columns
+ * only for a single table, and if 'numCols' is not NULL, the number of
+ * columns stored in the returned wxColInf is set in '*numCols'
+ *
+ * userID is evaluated in the following manner:
+ * userID == NULL ... UserID is ignored
+ * userID == "" ... UserID set equal to 'this->uid'
+ * userID != "" ... UserID set equal to 'userID'
+ *
+ * NOTE: ALL column bindings associated with this wxDB instance are unbound
+ * by this function. This function should use its own wxDB instance
+ * to avoid undesired unbinding of columns.
+ */
+{
+ int noCols = 0;
+ int colNo = 0;
+ wxColInf *colInf = 0;
+
+ RETCODE retcode;
+ SDWORD cb;
+
+ wxString UserID;
+ wxString TableName;
+
+ if (userID)
+ {
+ if (!wxStrlen(userID))
+ UserID = uid;
+ else
+ UserID = userID;
+ }
+ else
+ UserID = "";
+
+ // dBase does not use user names, and some drivers fail if you try to pass one
+ if (Dbms() == dbmsDBASE)
+ UserID = "";
+
+ // Oracle user names may only be in uppercase, so force
+ // the name to uppercase
+ if (Dbms() == dbmsORACLE)
+ UserID = UserID.Upper();
+
+ // Pass 1 - Determine how many columns there are.
+ // Pass 2 - Allocate the wxColInf array and fill in
+ // the array with the column information.
+ int pass;
+ for (pass = 1; pass <= 2; pass++)
+ {
+ if (pass == 2)
+ {
+ if (noCols == 0) // Probably a bogus table name(s)
+ break;
+ // Allocate n wxColInf objects to hold the column information
+ colInf = new wxColInf[noCols+1];
+ if (!colInf)
+ break;
+ // Mark the end of the array
+ wxStrcpy(colInf[noCols].tableName, "");
+ wxStrcpy(colInf[noCols].colName, "");
+ colInf[noCols].sqlDataType = 0;
+ }
+
+ TableName = tableName;
+ // Oracle table names are uppercase only, so force
+ // the name to uppercase just in case programmer forgot to do this
+ if (Dbms() == dbmsORACLE)
+ TableName = TableName.Upper();
+
+ SQLFreeStmt(hstmt, SQL_CLOSE);
+
+ // MySQL and Access cannot accept a user name when looking up column names, so we
+ // use the call below that leaves out the user name
+ if (wxStrcmp(UserID.GetData(),"") &&
+ Dbms() != dbmsMY_SQL &&
+ Dbms() != dbmsACCESS)
+ {
+ retcode = SQLColumns(hstmt,
+ NULL, 0, // All qualifiers
+ (UCHAR *) UserID.GetData(), SQL_NTS, // Owner
+ (UCHAR *) TableName.GetData(), SQL_NTS,
+ NULL, 0); // All columns
+ }
+ else
+ {
+ retcode = SQLColumns(hstmt,
+ NULL, 0, // All qualifiers
+ NULL, 0, // Owner
+ (UCHAR *) TableName.GetData(), SQL_NTS,
+ NULL, 0); // All columns
+ }
+ if (retcode != SQL_SUCCESS)
+ { // Error occured, abort
+ DispAllErrors(henv, hdbc, hstmt);
+ if (colInf)
+ delete [] colInf;
+ SQLFreeStmt(hstmt, SQL_CLOSE);
+ if (numCols)
+ *numCols = 0;
+ return(0);
+ }
+
+ while ((retcode = SQLFetch(hstmt)) == SQL_SUCCESS)
+ {
+ if (pass == 1) // First pass, just add up the number of columns
+ noCols++;
+ else // Pass 2; Fill in the array of structures
+ {
+ if (colNo < noCols) // Some extra error checking to prevent memory overwrites
+ {
+ // NOTE: Only the ODBC 1.x fields are retrieved
+ GetData( 1, SQL_C_CHAR, (UCHAR*) colInf[colNo].catalog, 128+1, &cb);
+ GetData( 2, SQL_C_CHAR, (UCHAR*) colInf[colNo].schema, 128+1, &cb);
+ GetData( 3, SQL_C_CHAR, (UCHAR*) colInf[colNo].tableName, DB_MAX_TABLE_NAME_LEN+1, &cb);
+ GetData( 4, SQL_C_CHAR, (UCHAR*) colInf[colNo].colName, DB_MAX_COLUMN_NAME_LEN+1, &cb);
+ GetData( 5, SQL_C_SSHORT, (UCHAR*) &colInf[colNo].sqlDataType, 0, &cb);
+ GetData( 6, SQL_C_CHAR, (UCHAR*) colInf[colNo].typeName, 128+1, &cb);
+ GetData( 7, SQL_C_SLONG, (UCHAR*) &colInf[colNo].columnSize, 0, &cb);
+ // BJO 991214 : SQL_C_SSHORT instead of SQL_C_SLONG, otherwise fails on Sparc (probably all 64 bit architectures)
+ GetData( 8, SQL_C_SSHORT, (UCHAR*) &colInf[colNo].bufferLength, 0, &cb);
+ GetData( 9, SQL_C_SSHORT, (UCHAR*) &colInf[colNo].decimalDigits,0, &cb);
+ GetData(10, SQL_C_SSHORT, (UCHAR*) &colInf[colNo].numPrecRadix, 0, &cb);
+ GetData(11, SQL_C_SSHORT, (UCHAR*) &colInf[colNo].nullable, 0, &cb);
+ GetData(12, SQL_C_CHAR, (UCHAR*) colInf[colNo].remarks, 254+1, &cb);
+ // Start Values for Primary/Foriegn Key (=No)
+ colInf[colNo].PkCol = 0; // Primary key column 0=No; 1= First Key, 2 = Second Key etc.
+ colInf[colNo].PkTableName[0] = 0; // Tablenames where Primary Key is used as a Foreign Key
+ colInf[colNo].FkCol = 0; // Foreign key column 0=No; 1= First Key, 2 = Second Key etc.
+ colInf[colNo].FkTableName[0] = 0; // Foreign key table name
+
+ // Determine the wxDB data type that is used to represent the native data type of this data source
+ colInf[colNo].dbDataType = 0;
+ if (!wxStricmp(typeInfVarchar.TypeName,colInf[colNo].typeName))
+ colInf[colNo].dbDataType = DB_DATA_TYPE_VARCHAR;
+ else if (!wxStricmp(typeInfInteger.TypeName,colInf[colNo].typeName))
+ colInf[colNo].dbDataType = DB_DATA_TYPE_INTEGER;
+ else if (!wxStricmp(typeInfFloat.TypeName,colInf[colNo].typeName))
+ colInf[colNo].dbDataType = DB_DATA_TYPE_FLOAT;
+ else if (!wxStricmp(typeInfDate.TypeName,colInf[colNo].typeName))
+ colInf[colNo].dbDataType = DB_DATA_TYPE_DATE;
+
+ colNo++;
+ }
+ }
+ }
+ if (retcode != SQL_NO_DATA_FOUND)
+ { // Error occured, abort
+ DispAllErrors(henv, hdbc, hstmt);
+ if (colInf)
+ delete [] colInf;
+ SQLFreeStmt(hstmt, SQL_CLOSE);
+ if (numCols)
+ *numCols = 0;
+ return(0);
+ }
+ }
+
+ SQLFreeStmt(hstmt, SQL_CLOSE);
+
+ // Store Primary and Foriegn Keys
+ GetKeyFields(tableName,colInf,noCols);
+
+ if (numCols)
+ *numCols = noCols;
+ return colInf;
+
+} // wxDB::GetColumns()
+
+
+/********** wxDB::GetColumnCount() **********/
+int wxDB::GetColumnCount(char *tableName, const char *userID)
+/*
+ * Returns a count of how many columns are in a table.
+ * If an error occurs in computing the number of columns
+ * this function will return a -1 for the count
+ *
+ * userID is evaluated in the following manner:
+ * userID == NULL ... UserID is ignored
+ * userID == "" ... UserID set equal to 'this->uid'
+ * userID != "" ... UserID set equal to 'userID'
+ *
+ * NOTE: ALL column bindings associated with this wxDB instance are unbound
+ * by this function. This function should use its own wxDB instance
+ * to avoid undesired unbinding of columns.
+ */
+{
+ int noCols = 0;
+
+ RETCODE retcode;
+
+ wxString UserID;
+ wxString TableName;
+
+ if (userID)
+ {
+ if (!wxStrlen(userID))
+ UserID = uid;
+ else
+ UserID = userID;
+ }
+ else
+ UserID = "";
+
+ // dBase does not use user names, and some drivers fail if you try to pass one
+ if (Dbms() == dbmsDBASE)
+ UserID = "";
+
+ // Oracle user names may only be in uppercase, so force
+ // the name to uppercase
+ if (Dbms() == dbmsORACLE)
+ UserID = UserID.Upper();
+
+ {
+ // Loop through each table name
+ {
+ TableName = tableName;
+ // Oracle table names are uppercase only, so force
+ // the name to uppercase just in case programmer forgot to do this
+ if (Dbms() == dbmsORACLE)
+ TableName = TableName.Upper();
+
+ SQLFreeStmt(hstmt, SQL_CLOSE);
+
+ // MySQL and Access cannot accept a user name when looking up column names, so we
+ // use the call below that leaves out the user name
+ if (wxStrcmp(UserID.GetData(),"") &&
+ Dbms() != dbmsMY_SQL &&
+ Dbms() != dbmsACCESS)
+ {
+ retcode = SQLColumns(hstmt,
+ NULL, 0, // All qualifiers
+ (UCHAR *) UserID.GetData(), SQL_NTS, // Owner
+ (UCHAR *) TableName.GetData(), SQL_NTS,
+ NULL, 0); // All columns
+ }
+ else
+ {
+ retcode = SQLColumns(hstmt,
+ NULL, 0, // All qualifiers
+ NULL, 0, // Owner
+ (UCHAR *) TableName.GetData(), SQL_NTS,
+ NULL, 0); // All columns
+ }
+ if (retcode != SQL_SUCCESS)
+ { // Error occured, abort
+ DispAllErrors(henv, hdbc, hstmt);
+ SQLFreeStmt(hstmt, SQL_CLOSE);
+ return(-1);
+ }
+
+ // Count the columns
+ while ((retcode = SQLFetch(hstmt)) == SQL_SUCCESS)
+ noCols++;
+
+ if (retcode != SQL_NO_DATA_FOUND)
+ { // Error occured, abort
+ DispAllErrors(henv, hdbc, hstmt);
+ SQLFreeStmt(hstmt, SQL_CLOSE);
+ return(-1);
+ }
+ }
+ }
+
+ SQLFreeStmt(hstmt, SQL_CLOSE);
+ return noCols;
+
+} // wxDB::GetColumnCount()
+
+
+/********** wxDB::GetCatalog() *******/
+wxDbInf *wxDB::GetCatalog(char *userID)
+/*
+ * ---------------------------------------------------------------------
+ * -- 19991203 : mj10777@gmx.net : Create ------
+ * -- : Creates a wxDbInf with Tables / Cols Array ------
+ * -- : uses SQLTables and fills pTableInf; ------
+ * -- : pColInf is set to NULL and numCols to 0; ------
+ * -- : returns pDbInf (wxDbInf) ------
+ * -- - if unsuccesfull (pDbInf == NULL) ------
+ * -- : pColInf can be filled with GetColumns(..); ------
+ * -- : numCols can be filled with GetColumnCount(..); ------
+ * ---------------------------------------------------------------------
+ *
+ * userID is evaluated in the following manner:
+ * userID == NULL ... UserID is ignored
+ * userID == "" ... UserID set equal to 'this->uid'
+ * userID != "" ... UserID set equal to 'userID'
+ *
+ * NOTE: ALL column bindings associated with this wxDB instance are unbound
+ * by this function. This function should use its own wxDB instance
+ * to avoid undesired unbinding of columns.
+ */
+{
+ wxDbInf *pDbInf = NULL; // Array of catalog entries
+ int noTab = 0; // Counter while filling table entries
+ int pass;
+ RETCODE retcode;
+ SDWORD cb;
+ char tblNameSave[DB_MAX_TABLE_NAME_LEN+1];
+
+ wxString UserID;
+
+ if (userID)
+ {
+ if (!wxStrlen(userID))
+ UserID = uid;
+ else
+ UserID = userID;
+ }
+ else
+ UserID = "";
+
+ // dBase does not use user names, and some drivers fail if you try to pass one
+ if (Dbms() == dbmsDBASE)
+ UserID = "";
+
+ // Oracle user names may only be in uppercase, so force
+ // the name to uppercase
+ if (Dbms() == dbmsORACLE)
+ UserID = UserID.Upper();
+
+ //-------------------------------------------------------------
+ pDbInf = new wxDbInf; // Create the Database Arrray
+ pDbInf->catalog[0] = 0;
+ pDbInf->schema[0] = 0;
+ pDbInf->numTables = 0; // Counter for Tables
+ pDbInf->pTableInf = NULL; // Array of Tables
+ //-------------------------------------------------------------
+ // Table Information
+ // Pass 1 - Determine how many Tables there are.
+ // Pass 2 - Create the Table array and fill it
+ // - Create the Cols array = NULL
+ //-------------------------------------------------------------
+ for (pass = 1; pass <= 2; pass++)
+ {
+ SQLFreeStmt(hstmt, SQL_CLOSE); // Close if Open
+ strcpy(tblNameSave,"");
+
+ if (wxStrcmp(UserID.GetData(),"") &&
+ Dbms() != dbmsMY_SQL &&
+ Dbms() != dbmsACCESS)
+ {
+ retcode = SQLTables(hstmt,
+ NULL, 0, // All qualifiers
+ (UCHAR *) UserID.GetData(), SQL_NTS, // User specified
+ NULL, 0, // All tables
+ NULL, 0); // All columns
+ }
+ else
+ {
+ retcode = SQLTables(hstmt,
+ NULL, 0, // All qualifiers
+ NULL, 0, // User specified
+ NULL, 0, // All tables
+ NULL, 0); // All columns
+ }
+ if (retcode != SQL_SUCCESS)
+ {
+ DispAllErrors(henv, hdbc, hstmt);
+ pDbInf = NULL;
+ SQLFreeStmt(hstmt, SQL_CLOSE);
+ return pDbInf;
+ }
+
+ while ((retcode = SQLFetch(hstmt)) == SQL_SUCCESS) // Table Information
+ {
+ if (pass == 1) // First pass, just count the Tables
+ {
+ if (pDbInf->numTables == 0)
+ {
+ GetData( 1, SQL_C_CHAR, (UCHAR*) pDbInf->catalog, 128+1, &cb);
+ GetData( 2, SQL_C_CHAR, (UCHAR*) pDbInf->schema, 128+1, &cb);
+ }
+ pDbInf->numTables++; // Counter for Tables
+ } // if (pass == 1)
+ if (pass == 2) // Create and fill the Table entries
+ {
+ if (pDbInf->pTableInf == NULL) // Has the Table Array been created
+ { // no, then create the Array
+ pDbInf->pTableInf = new wxTableInf[pDbInf->numTables];
+ for (noTab=0;noTab<pDbInf->numTables;noTab++)
+ {
+ (pDbInf->pTableInf+noTab)->tableName[0] = 0;
+ (pDbInf->pTableInf+noTab)->tableType[0] = 0;
+ (pDbInf->pTableInf+noTab)->tableRemarks[0] = 0;
+ (pDbInf->pTableInf+noTab)->numCols = 0;
+ (pDbInf->pTableInf+noTab)->pColInf = NULL;
+ }
+ noTab = 0;
+ } // if (pDbInf->pTableInf == NULL) // Has the Table Array been created
+ GetData( 3, SQL_C_CHAR, (UCHAR*) (pDbInf->pTableInf+noTab)->tableName, DB_MAX_TABLE_NAME_LEN+1, &cb);
+ GetData( 4, SQL_C_CHAR, (UCHAR*) (pDbInf->pTableInf+noTab)->tableType, 30+1, &cb);
+ GetData( 5, SQL_C_CHAR, (UCHAR*) (pDbInf->pTableInf+noTab)->tableRemarks, 254+1, &cb);
+ noTab++;
+ } // if (pass == 2) We now know the amount of Tables
+ } // while ((retcode = SQLFetch(hstmt)) == SQL_SUCCESS)
+ } // for (pass = 1; pass <= 2; pass++)
+ SQLFreeStmt(hstmt, SQL_CLOSE);
+
+ // Query how many columns are in each table
+ for (noTab=0;noTab<pDbInf->numTables;noTab++)
+ {
+ (pDbInf->pTableInf+noTab)->numCols = GetColumnCount((pDbInf->pTableInf+noTab)->tableName,UserID);
+ }
+ return pDbInf;
+} // wxDB::GetCatalog()
+
+
projects / wxWidgets.git / blobdiff