func (stmt *Statement) FieldMetadata(col int) (*Field, *ODBCError) {
var BufferLength C.SQLSMALLINT = INFO_BUFFER_LEN
var NameLength C.SQLSMALLINT
var DataType C.SQLSMALLINT
var ColumnSize C.SQLULEN
var DecimalDigits C.SQLSMALLINT
var Nullable C.SQLSMALLINT
ColumnName := make([]byte, INFO_BUFFER_LEN)
ret := C.SQLDescribeCol(C.SQLHSTMT(stmt.handle),
C.SQLUSMALLINT(col),
(*C.SQLCHAR)(unsafe.Pointer(&ColumnName[0])),
BufferLength,
&NameLength,
&DataType,
&ColumnSize,
&DecimalDigits,
&Nullable)
if !Success(ret) {
err := FormatError(C.SQL_HANDLE_STMT, stmt.handle, int(ret))
debugPrint("SQLDescribeCol Error", err)
return nil, err
}
field := &Field{string(ColumnName[0:NameLength]), int(DataType), int(ColumnSize), int(DecimalDigits), int(Nullable)}
return field, nil
}
func (stmt *Statement) GetParamType(index int) (int, int, int, int, *ODBCError) {
var data_type, dec_ptr, null_ptr C.SQLSMALLINT
var size_ptr C.SQLULEN
ret := C.SQLDescribeParam(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(index), &data_type, &size_ptr, &dec_ptr, &null_ptr)
if !Success(ret) {
err := FormatError(C.SQL_HANDLE_STMT, stmt.handle)
return -1, -1, -1, -1, err
}
return int(data_type), int(size_ptr), int(dec_ptr), int(null_ptr), nil
}
func (stmt *Statement) GetField(field_index int) (v interface{}, ftype int, flen int, err *ODBCError) {
var field_type C.SQLINTEGER
var field_len C.SQLINTEGER
var ll C.SQLSMALLINT
ret := C.SQLColAttribute(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(field_index+1), C.SQL_DESC_CONCISE_TYPE, C.SQLPOINTER(unsafe.Pointer(uintptr(0))), C.SQLSMALLINT(0), &ll, &field_type)
if !Success(ret) {
debugPrint("GetFiled type Error")
}
ret = C.SQLColAttribute(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(field_index+1), C.SQL_DESC_LENGTH, C.SQLPOINTER(unsafe.Pointer(uintptr(0))), C.SQLSMALLINT(0), &ll, &field_len)
if !Success(ret) {
debugPrint("GetFiled len Error")
}
var fl C.SQLLEN = C.SQLLEN(field_len)
switch int(field_type) {
case C.SQL_BIT, C.SQL_INTEGER, C.SQL_SMALLINT, C.SQL_TINYINT:
var value C.HANDLE
ret = C.SQLGetData(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(field_index+1), C.SQL_C_LONG, C.SQLPOINTER(unsafe.Pointer(&value)), 0, &fl)
if fl == -1 {
v = nil
} else {
v = value
}
case C.SQL_FLOAT, C.SQL_REAL:
var value C.double
ret = C.SQLGetData(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(field_index+1), C.SQL_C_DOUBLE, C.SQLPOINTER(unsafe.Pointer(&value)), 0, &fl)
if fl == -1 {
v = nil
} else {
v = value
}
case C.SQL_WCHAR, C.SQL_WVARCHAR, C.SQL_WLONGVARCHAR:
value := make([]uint16, int(field_len)+8)
ret = C.SQLGetData(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(field_index+1), C.SQL_C_WCHAR, C.SQLPOINTER(unsafe.Pointer(&value[0])), C.SQLINTEGER(int(field_len)+4), &fl)
s := UTF16ToString(value)
v = s
default:
value := make([]byte, int(fl)+2)
ret = C.SQLGetData(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(field_index+1), C.SQL_C_CHAR, C.SQLPOINTER(unsafe.Pointer(&value[0])), C.SQLINTEGER(int(field_len)+4), &fl)
s := string(value[0:])
v = s
debugPrint("default type", value, fl, s)
}
if !Success(ret) {
err = FormatError(C.SQL_HANDLE_STMT, stmt.handle, int(ret))
debugPrint("GetFiled Data Error", err)
}
return v, int(field_type), int(fl), err
}
func SQLGetData(statementHandle SQLHSTMT, colOrParamNum SQLUSMALLINT, targetType SQLSMALLINT, targetValuePtr SQLPOINTER, bufferLength SQLLEN, vallen *SQLLEN) (ret SQLRETURN) {
r := C.SQLGetData(C.SQLHSTMT(statementHandle), C.SQLUSMALLINT(colOrParamNum), C.SQLSMALLINT(targetType), C.SQLPOINTER(targetValuePtr), C.SQLLEN(bufferLength), (*C.SQLLEN)(vallen))
return SQLRETURN(r)
}
func SQLDriverConnect(connectionHandle SQLHDBC, windowHandle SQLHWND, inConnectionString *SQLWCHAR, stringLength1 SQLSMALLINT, outConnectionString *SQLWCHAR, bufferLength SQLSMALLINT, stringLength2Ptr *SQLSMALLINT, driverCompletion SQLUSMALLINT) (ret SQLRETURN) {
r := C.SQLDriverConnectW(C.SQLHDBC(connectionHandle), C.SQLHWND(windowHandle), (*C.SQLWCHAR)(unsafe.Pointer(inConnectionString)), C.SQLSMALLINT(stringLength1), (*C.SQLWCHAR)(unsafe.Pointer(outConnectionString)), C.SQLSMALLINT(bufferLength), (*C.SQLSMALLINT)(stringLength2Ptr), C.SQLUSMALLINT(driverCompletion))
return SQLRETURN(r)
}
func SQLDescribeParam(statementHandle SQLHSTMT, parameterNumber SQLUSMALLINT, dataTypePtr *SQLSMALLINT, parameterSizePtr *SQLULEN, decimalDigitsPtr *SQLSMALLINT, nullablePtr *SQLSMALLINT) (ret SQLRETURN) {
r := C.SQLDescribeParam(C.SQLHSTMT(statementHandle), C.SQLUSMALLINT(parameterNumber), (*C.SQLSMALLINT)(dataTypePtr), (*C.SQLULEN)(parameterSizePtr), (*C.SQLSMALLINT)(decimalDigitsPtr), (*C.SQLSMALLINT)(nullablePtr))
return SQLRETURN(r)
}
func SQLDescribeCol(statementHandle SQLHSTMT, columnNumber SQLUSMALLINT, columnName *SQLWCHAR, bufferLength SQLSMALLINT, nameLengthPtr *SQLSMALLINT, dataTypePtr *SQLSMALLINT, columnSizePtr *SQLULEN, decimalDigitsPtr *SQLSMALLINT, nullablePtr *SQLSMALLINT) (ret SQLRETURN) {
r := C.SQLDescribeColW(C.SQLHSTMT(statementHandle), C.SQLUSMALLINT(columnNumber), (*C.SQLWCHAR)(unsafe.Pointer(columnName)), C.SQLSMALLINT(bufferLength), (*C.SQLSMALLINT)(nameLengthPtr), (*C.SQLSMALLINT)(dataTypePtr), (*C.SQLULEN)(columnSizePtr), (*C.SQLSMALLINT)(decimalDigitsPtr), (*C.SQLSMALLINT)(nullablePtr))
return SQLRETURN(r)
}
func SQLBindParameter(statementHandle SQLHSTMT, parameterNumber SQLUSMALLINT, inputOutputType SQLSMALLINT, valueType SQLSMALLINT, parameterType SQLSMALLINT, columnSize SQLULEN, decimalDigits SQLSMALLINT, parameterValue SQLPOINTER, bufferLength SQLLEN, ind *SQLLEN) (ret SQLRETURN) {
r := C.SQLBindParameter(C.SQLHSTMT(statementHandle), C.SQLUSMALLINT(parameterNumber), C.SQLSMALLINT(inputOutputType), C.SQLSMALLINT(valueType), C.SQLSMALLINT(parameterType), C.SQLULEN(columnSize), C.SQLSMALLINT(decimalDigits), C.SQLPOINTER(parameterValue), C.SQLLEN(bufferLength), (*C.SQLLEN)(ind))
return SQLRETURN(r)
}
func SQLBindCol(statementHandle SQLHSTMT, columnNumber SQLUSMALLINT, targetType SQLSMALLINT, targetValuePtr SQLPOINTER, bufferLength SQLLEN, vallen *SQLLEN) (ret SQLRETURN) {
r := C.SQLBindCol(C.SQLHSTMT(statementHandle), C.SQLUSMALLINT(columnNumber), C.SQLSMALLINT(targetType), C.SQLPOINTER(targetValuePtr), C.SQLLEN(bufferLength), (*C.SQLLEN)(vallen))
return SQLRETURN(r)
}
func (stmt *Statement) BindParam(index int, param interface{}) *ODBCError {
var ValueType C.SQLSMALLINT
var ParameterType C.SQLSMALLINT
var ColumnSize C.SQLULEN
var DecimalDigits C.SQLSMALLINT
var ParameterValuePtr C.SQLPOINTER
var BufferLength C.SQLLEN
var StrLen_or_IndPt C.SQLLEN
v := reflect.ValueOf(param)
if param == nil {
ft, _, _, _, err := stmt.GetParamType(index)
if err != nil {
return err
}
ParameterType = C.SQLSMALLINT(ft)
if ParameterType == C.SQL_UNKNOWN_TYPE {
ParameterType = C.SQL_VARCHAR
}
ValueType = C.SQL_C_DEFAULT
StrLen_or_IndPt = C.SQL_NULL_DATA
ColumnSize = 1
} else {
switch v.Kind() {
case reflect.Bool:
ParameterType = C.SQL_BIT
ValueType = C.SQL_C_BIT
var b [1]byte
if v.Bool() {
b[0] = 1
} else {
b[0] = 0
}
ParameterValuePtr = C.SQLPOINTER(unsafe.Pointer(&b[0]))
BufferLength = 1
StrLen_or_IndPt = 0
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
switch v.Type().Kind() {
case reflect.Int:
case reflect.Int8, reflect.Int16, reflect.Int32:
ParameterType = C.SQL_INTEGER
ValueType = C.SQL_C_LONG
var l C.long = C.long(v.Int())
ParameterValuePtr = C.SQLPOINTER(unsafe.Pointer(&l))
BufferLength = 4
StrLen_or_IndPt = 0
case reflect.Int64:
ParameterType = C.SQL_BIGINT
ValueType = C.SQL_C_SBIGINT
var ll C.longlong = C.longlong(v.Int())
ParameterValuePtr = C.SQLPOINTER(unsafe.Pointer(&ll))
BufferLength = 8
StrLen_or_IndPt = 0
}
case reflect.Float32, reflect.Float64:
ParameterType = C.SQL_DOUBLE
ValueType = C.SQL_C_DOUBLE
var d C.double = C.double(v.Float())
ParameterValuePtr = C.SQLPOINTER(unsafe.Pointer(&d))
BufferLength = 8
StrLen_or_IndPt = 0
case reflect.Complex64, reflect.Complex128:
case reflect.String:
var slen C.SQLUINTEGER = C.SQLUINTEGER(len(v.String()))
ParameterType = C.SQL_VARCHAR
ValueType = C.SQL_C_CHAR
s := []byte(v.String())
ParameterValuePtr = C.SQLPOINTER(unsafe.Pointer(&s[0]))
ColumnSize = C.SQLULEN(slen)
BufferLength = C.SQLLEN(slen + 1)
StrLen_or_IndPt = C.SQLLEN(slen)
default:
fmt.Println("Not support type", v)
}
}
ret := C.SQLBindParameter(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(index), C.SQL_PARAM_INPUT, ValueType, ParameterType, ColumnSize, DecimalDigits, ParameterValuePtr, BufferLength, &StrLen_or_IndPt)
if !Success(ret) {
err := FormatError(C.SQL_HANDLE_STMT, stmt.handle)
return err
}
return nil
}
func (stmt *Statement) GetField(field_index int) (v interface{}, ftype int, flen int, err *ODBCError) {
var field_type C.int
var field_len C.SQLLEN
var ll C.SQLSMALLINT
ret := C._SQLColAttribute(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(field_index+1), C.SQL_DESC_CONCISE_TYPE, C.SQLPOINTER(unsafe.Pointer(uintptr(0))), C.SQLSMALLINT(0), &ll, unsafe.Pointer(&field_type))
if !Success(ret) {
// TODO return err
}
ret = C._SQLColAttribute(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(field_index+1), C.SQL_DESC_LENGTH, C.SQLPOINTER(unsafe.Pointer(uintptr(0))), C.SQLSMALLINT(0), &ll, unsafe.Pointer(&field_len))
if !Success(ret) {
// TODO return err
}
var fl C.SQLLEN = C.SQLLEN(field_len)
switch int(field_type) {
case C.SQL_BIT:
var value C.BYTE
ret = C.SQLGetData(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(field_index+1), C.SQL_C_BIT, C.SQLPOINTER(unsafe.Pointer(&value)), 0, &fl)
if fl == -1 {
v = nil
} else {
v = byte(value)
}
case C.SQL_INTEGER, C.SQL_SMALLINT, C.SQL_TINYINT:
var value C.long
ret = C.SQLGetData(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(field_index+1), C.SQL_C_LONG, C.SQLPOINTER(unsafe.Pointer(&value)), 0, &fl)
if fl == -1 {
v = nil
} else {
v = int(value)
}
case C.SQL_BIGINT:
var value C.longlong
ret = C.SQLGetData(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(field_index+1), C.SQL_C_SBIGINT, C.SQLPOINTER(unsafe.Pointer(&value)), 0, &fl)
if fl == -1 {
v = nil
} else {
v = int64(value)
}
case C.SQL_FLOAT, C.SQL_REAL, C.SQL_DOUBLE:
var value C.double
ret = C.SQLGetData(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(field_index+1), C.SQL_C_DOUBLE, C.SQLPOINTER(unsafe.Pointer(&value)), 0, &fl)
if fl == -1 {
v = nil
} else {
v = float64(value)
}
case C.SQL_CHAR, C.SQL_VARCHAR, C.SQL_LONGVARCHAR, C.SQL_WCHAR, C.SQL_WVARCHAR, C.SQL_WLONGVARCHAR:
value := make([]uint16, int(field_len)+8)
ret = C.SQLGetData(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(field_index+1), C.SQL_C_WCHAR, C.SQLPOINTER(unsafe.Pointer(&value[0])), field_len+4, &fl)
s := UTF16ToString(value)
v = s
case C.SQL_TYPE_TIMESTAMP, C.SQL_TYPE_DATE, C.SQL_TYPE_TIME, C.SQL_DATETIME:
var value C.TIMESTAMP_STRUCT
ret = C.SQLGetData(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(field_index+1), C.SQL_C_TYPE_TIMESTAMP, C.SQLPOINTER(unsafe.Pointer(&value)), C.SQLLEN(unsafe.Sizeof(value)), &fl)
if fl == -1 {
v = nil
} else {
v = time.Date(int(value.year), time.Month(value.month), int(value.day), int(value.hour), int(value.minute), int(value.second), int(value.fraction), time.UTC)
}
case C.SQL_BINARY, C.SQL_VARBINARY, C.SQL_LONGVARBINARY:
var vv int
ret = C.SQLGetData(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(field_index+1), C.SQL_C_BINARY, C.SQLPOINTER(unsafe.Pointer(&vv)), 0, &fl)
if fl == -1 {
v = nil
} else {
value := make([]byte, fl)
ret = C.SQLGetData(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(field_index+1), C.SQL_C_BINARY, C.SQLPOINTER(unsafe.Pointer(&value[0])), C.SQLLEN(fl), &fl)
v = value
}
default:
value := make([]byte, field_len)
ret = C.SQLGetData(C.SQLHSTMT(stmt.handle), C.SQLUSMALLINT(field_index+1), C.SQL_C_BINARY, C.SQLPOINTER(unsafe.Pointer(&value[0])), field_len, &fl)
v = value
}
if !Success(ret) {
err = FormatError(C.SQL_HANDLE_STMT, stmt.handle)
}
return v, int(field_type), int(fl), err
}
