func (conn *Connection) Prepare(sql string, params ...interface{}) (*Statement, *ODBCError) {
wsql := StringToUTF16Ptr(sql)
stmt, err := conn.newStmt()
if err != nil {
return nil, err
}
ret := C.SQLPrepareW(C.SQLHSTMT(stmt.handle), (*C.SQLWCHAR)(unsafe.Pointer(wsql)), C.SQLINTEGER(len(sql)))
if !Success(ret) {
err := FormatError(C.SQL_HANDLE_STMT, stmt.handle)
stmt.Close()
return nil, err
}
stmt.prepared = true
return stmt, nil
}
func SQLPrepare(statementHandle SQLHSTMT, statementText *SQLWCHAR, textLength SQLINTEGER) (ret SQLRETURN) {
r := C.SQLPrepareW(C.SQLHSTMT(statementHandle), (*C.SQLWCHAR)(unsafe.Pointer(statementText)), C.SQLINTEGER(textLength))
return SQLRETURN(r)
}
func SQLSetConnectAttr(connectionHandle SQLHDBC, attribute SQLINTEGER, valuePtr SQLPOINTER, stringLength SQLINTEGER) (ret SQLRETURN) {
r := C.SQLSetConnectAttrW(C.SQLHDBC(connectionHandle), C.SQLINTEGER(attribute), C.SQLPOINTER(valuePtr), C.SQLINTEGER(stringLength))
return SQLRETURN(r)
}
func SQLSetEnvAttr(environmentHandle SQLHENV, attribute SQLINTEGER, valuePtr SQLPOINTER, stringLength SQLINTEGER) (ret SQLRETURN) {
r := C.SQLSetEnvAttr(C.SQLHENV(environmentHandle), C.SQLINTEGER(attribute), C.SQLPOINTER(valuePtr), C.SQLINTEGER(stringLength))
return SQLRETURN(r)
}
func initEnv() (err *ODBCError) {
ret := C.SQLAllocHandle(C.SQL_HANDLE_ENV, nil, &Genv)
if !Success(ret) {
err := FormatError(C.SQL_HANDLE_ENV, Genv)
return err
}
ret = C.SQLSetEnvAttr(C.SQLHENV(Genv), C.SQL_ATTR_ODBC_VERSION, C.SQLPOINTER(unsafe.Pointer(uintptr(C.SQL_OV_ODBC3))), C.SQLINTEGER(0))
if !Success(ret) {
err := FormatError(C.SQL_HANDLE_ENV, Genv)
return err
}
return nil
}
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 = slen
BufferLength = C.SQLINTEGER(slen + 1)
StrLen_or_IndPt = C.SQLINTEGER(slen)
default:
debugPrint("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, int(ret))
debugPrint("SQLBindParameter Error", err)
return err
}
return 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 SQLSetConnectUIntPtrAttr(connectionHandle SQLHDBC, attribute SQLINTEGER, valuePtr uintptr, stringLength SQLINTEGER) (ret SQLRETURN) {
r := C.sqlSetConnectUIntPtrAttr(C.SQLHDBC(connectionHandle), C.SQLINTEGER(attribute), C.uintptr_t(valuePtr), C.SQLINTEGER(stringLength))
return SQLRETURN(r)
}
func SQLSetEnvUIntPtrAttr(environmentHandle SQLHENV, attribute SQLINTEGER, valuePtr uintptr, stringLength SQLINTEGER) (ret SQLRETURN) {
r := C.sqlSetEnvUIntPtrAttr(C.SQLHENV(environmentHandle), C.SQLINTEGER(attribute), C.uintptr_t(valuePtr), C.SQLINTEGER(stringLength))
return SQLRETURN(r)
}