// beginRow allocates a handle for each column and fetches one row.
func (rset *Rset) beginRow() (err error) {
rset.log(_drv.cfg.Log.Rset.BeginRow)
rset.Index++
// check is open
if rset.ocistmt == nil {
return errF("Rset is closed")
}
// allocate define descriptor handles
for _, define := range rset.defs {
//glog.Infof("Rset.define: ", define)
rset.logF(_drv.cfg.Log.Rset.BeginRow, "%#v", define)
err := define.alloc()
if err != nil {
return err
}
}
// fetch one row
r := C.OCIStmtFetch2(
rset.ocistmt, //OCIStmt *stmthp,
rset.stmt.ses.srv.env.ocierr, //OCIError *errhp,
C.ub4(1), //ub4 nrows,
C.OCI_FETCH_NEXT, //ub2 orientation,
C.sb4(0), //sb4 fetchOffset,
C.OCI_DEFAULT) //ub4 mode );
if r == C.OCI_ERROR {
return rset.stmt.ses.srv.env.ociError()
} else if r == C.OCI_NO_DATA {
// Adjust Index so that Len() returns correct value when all rows read
rset.Index--
// return io.EOF to conform with database/sql/driver
return io.EOF
}
return nil
}
// Next is called to populate the next row of data into
// the provided slice. The provided slice will be the same
// size as the Columns() are wide.
//
// The dest slice may be populated only with
// a driver Value type, but excluding string.
// All string values must be converted to []byte.
//
// Next should return io.EOF when there are no more rows.
func (r *rows) Next(dest []driver.Value) error {
rv := C.OCIStmtFetch2((*C.OCIStmt)(r.stmt.handle), (*C.OCIError)(r.stmt.conn.err), 1, C.OCI_FETCH_NEXT, 1, C.OCI_DEFAULT)
if rv == C.OCI_ERROR {
err := ociGetError(r.stmt.conn.err)
fmt.Println(err)
return ociGetError(r.stmt.conn.err)
}
if rv == C.OCI_NO_DATA {
fmt.Println("no data")
return io.EOF
}
for i := range dest {
dest[i] = string(r.columns[i].raw)
}
return nil
}
func (rc *OCI8Rows) Next(dest []driver.Value) (err error) {
if rc.closed {
return nil
}
rv := C.OCIStmtFetch2(
(*C.OCIStmt)(rc.s.s),
(*C.OCIError)(rc.s.c.err),
1,
C.OCI_FETCH_NEXT,
0,
C.OCI_DEFAULT)
if rv == C.OCI_NO_DATA {
return io.EOF
} else if rv != C.OCI_SUCCESS && rv != C.OCI_SUCCESS_WITH_INFO {
return ociGetError(rv, rc.s.c.err)
}
for i := range dest {
// TODO: switch rc.cols[i].ind
if *rc.cols[i].ind == -1 { // Null
dest[i] = nil
continue
} else if *rc.cols[i].ind != 0 {
return errors.New(fmt.Sprintf("Unknown column indicator: %d, col %s", rc.cols[i].ind, rc.cols[i].name))
}
switch rc.cols[i].kind {
case C.SQLT_DAT: // for test, date are return as timestamp
buf := (*[1 << 30]byte)(unsafe.Pointer(rc.cols[i].pbuf))[0:*rc.cols[i].rlen]
// TODO: Handle BCE dates (http://docs.oracle.com/cd/B12037_01/appdev.101/b10779/oci03typ.htm#438305)
// TODO: Handle timezones (http://docs.oracle.com/cd/B12037_01/appdev.101/b10779/oci03typ.htm#443601)
dest[i] = time.Date(
(int(buf[0])-100)*100+(int(buf[1])-100),
time.Month(int(buf[2])),
int(buf[3]),
int(buf[4])-1,
int(buf[5])-1,
int(buf[6])-1,
0,
rc.s.c.location)
case C.SQLT_BLOB, C.SQLT_CLOB:
ptmp := unsafe.Pointer(uintptr(rc.cols[i].pbuf) + unsafe.Sizeof(unsafe.Pointer(nil)))
bamt := (*C.ub4)(ptmp)
ptmp = unsafe.Pointer(uintptr(rc.cols[i].pbuf) + unsafe.Sizeof(C.ub4(0)) + unsafe.Sizeof(unsafe.Pointer(nil)))
b := (*[1 << 30]byte)(ptmp)[0:blobBufSize]
var buf []byte
again:
*bamt = 0
rv = C.OCILobRead(
(*C.OCISvcCtx)(rc.s.c.svc),
(*C.OCIError)(rc.s.c.err),
*(**C.OCILobLocator)(rc.cols[i].pbuf),
bamt,
1,
ptmp,
C.ub4(blobBufSize),
nil,
nil,
0,
C.SQLCS_IMPLICIT)
if rv == C.OCI_NEED_DATA {
buf = append(buf, b[:int(*bamt)]...)
goto again
}
if rv != C.OCI_SUCCESS {
return ociGetError(rv, rc.s.c.err)
}
if rc.cols[i].kind == C.SQLT_BLOB {
dest[i] = append(buf, b[:int(*bamt)]...)
} else {
dest[i] = string(append(buf, b[:int(*bamt)]...))
}
case C.SQLT_CHR, C.SQLT_AFC, C.SQLT_AVC:
buf := (*[1 << 30]byte)(unsafe.Pointer(rc.cols[i].pbuf))[0:*rc.cols[i].rlen]
switch {
case *rc.cols[i].ind == 0: // Normal
dest[i] = string(buf)
case *rc.cols[i].ind == -2 || // Field longer than type (truncated)
*rc.cols[i].ind > 0: // Field longer than type (truncated). Value is original length.
dest[i] = string(buf)
default:
return errors.New(fmt.Sprintf("Unknown column indicator: %d", rc.cols[i].ind))
}
case C.SQLT_BIN: // RAW
buf := (*[1 << 30]byte)(unsafe.Pointer(rc.cols[i].pbuf))[0:*rc.cols[i].rlen]
dest[i] = buf
case C.SQLT_NUM: // NUMBER
buf := (*[21]byte)(unsafe.Pointer(rc.cols[i].pbuf))
dest[i] = buf
case C.SQLT_VNU: // VARNUM
buf := (*[22]byte)(unsafe.Pointer(rc.cols[i].pbuf))
dest[i] = buf
case C.SQLT_INT: // INT
buf := (*[1 << 30]byte)(unsafe.Pointer(rc.cols[i].pbuf))[0:*rc.cols[i].rlen]
dest[i] = buf
case C.SQLT_LNG: // LONG
buf := (*[1 << 30]byte)(unsafe.Pointer(rc.cols[i].pbuf))[0:*rc.cols[i].rlen]
dest[i] = buf
case C.SQLT_IBDOUBLE, C.SQLT_IBFLOAT:
colsize := rc.cols[i].size
buf := (*[1 << 30]byte)(unsafe.Pointer(rc.cols[i].pbuf))[0:colsize]
if colsize == 4 {
v := uint32(buf[3])
v |= uint32(buf[2]) << 8
v |= uint32(buf[1]) << 16
v |= uint32(buf[0]) << 24
// Don't know why bits are inverted that way, but it works
if buf[0]&0x80 == 0 {
v ^= 0xffffffff
} else {
v &= 0x7fffffff
}
dest[i] = math.Float32frombits(v)
} else if colsize == 8 {
v := uint64(buf[7])
v |= uint64(buf[6]) << 8
v |= uint64(buf[5]) << 16
v |= uint64(buf[4]) << 24
v |= uint64(buf[3]) << 32
v |= uint64(buf[2]) << 40
v |= uint64(buf[1]) << 48
v |= uint64(buf[0]) << 56
// Don't know why bits are inverted that way, but it works
if buf[0]&0x80 == 0 {
v ^= 0xffffffffffffffff
} else {
v &= 0x7fffffffffffffff
}
dest[i] = math.Float64frombits(v)
} else {
return errors.New(fmt.Sprintf("Unhandled binary float size: %d", colsize))
}
case C.SQLT_TIMESTAMP:
if rv := C.WrapOCIDateTimeGetDateTime(
(*C.OCIEnv)(rc.s.c.env),
(*C.OCIError)(rc.s.c.err),
*(**C.OCIDateTime)(rc.cols[i].pbuf),
); rv.rv != C.OCI_SUCCESS {
return ociGetError(rv.rv, rc.s.c.err)
} else {
dest[i] = time.Date(
int(rv.y),
time.Month(rv.m),
int(rv.d),
int(rv.hh),
int(rv.mm),
int(rv.ss),
int(rv.ff),
rc.s.c.location)
}
case C.SQLT_TIMESTAMP_TZ, C.SQLT_TIMESTAMP_LTZ:
tptr := *(**C.OCIDateTime)(rc.cols[i].pbuf)
rv := C.WrapOCIDateTimeGetDateTime(
(*C.OCIEnv)(rc.s.c.env),
(*C.OCIError)(rc.s.c.err),
tptr)
if rv.rv != C.OCI_SUCCESS {
return ociGetError(rv.rv, rc.s.c.err)
}
rvz := C.WrapOCIDateTimeGetTimeZoneNameOffset(
(*C.OCIEnv)(rc.s.c.env),
(*C.OCIError)(rc.s.c.err),
tptr)
if rvz.rv != C.OCI_SUCCESS {
return ociGetError(rvz.rv, rc.s.c.err)
}
nnn := C.GoStringN((*C.char)((unsafe.Pointer)(&rvz.zone[0])), C.int(rvz.zlen))
loc, err := time.LoadLocation(nnn)
if err != nil {
// TODO: reuse locations
loc = time.FixedZone(nnn, int(rvz.h)*60*60+int(rvz.m)*60)
}
dest[i] = time.Date(
int(rv.y),
time.Month(rv.m),
int(rv.d),
int(rv.hh),
int(rv.mm),
int(rv.ss),
int(rv.ff),
loc)
case C.SQLT_INTERVAL_DS:
iptr := *(**C.OCIInterval)(rc.cols[i].pbuf)
rv := C.WrapOCIIntervalGetDaySecond(
(*C.OCIEnv)(rc.s.c.env),
(*C.OCIError)(rc.s.c.err),
iptr)
if rv.rv != C.OCI_SUCCESS {
return ociGetError(rv.rv, rc.s.c.err)
}
dest[i] = int64(time.Duration(rv.d)*time.Hour*24 + time.Duration(rv.hh)*time.Hour + time.Duration(rv.mm)*time.Minute + time.Duration(rv.ss)*time.Second + time.Duration(rv.ff))
case C.SQLT_INTERVAL_YM:
iptr := *(**C.OCIInterval)(rc.cols[i].pbuf)
rv := C.WrapOCIIntervalGetYearMonth(
(*C.OCIEnv)(rc.s.c.env),
(*C.OCIError)(rc.s.c.err),
iptr)
if rv.rv != C.OCI_SUCCESS {
return ociGetError(rv.rv, rc.s.c.err)
}
dest[i] = int64(rv.y)*12 + int64(rv.m)
default:
return errors.New(fmt.Sprintf("Unhandled column type: %d", rc.cols[i].kind))
}
}
return nil
}
func (s *StatementOracle) Next() (err int) {
if !s.fetchDone {
s.hDefine = new(C.OCIDefine)
res := C.OCIStmtExecute(s.con.driver.hService, s.hStatement, s.con.driver.hError, 0, 0, nil, nil, C.OCI_DEFAULT)
if C.OCI_SUCCESS != res && C.OCI_STILL_EXECUTING != res {
fmt.Printf("Resultado OCIStmtExecute=%v\n", res)
C.AuxOCIErrorGet(s.con.driver.hError)
return -1
}
s.fetchDone = true
/*
var idValue int
res = C.OCIDefineByPos( s.hStatement, &s.hDefine, s.con.driver.hError, 1 /*pos* /, unsafe.Pointer(&idValue), C.sb4(unsafe.Sizeof(idValue)), C.SQLT_INT, nil, nil, nil, C.OCI_DEFAULT);
if (C.OCI_SUCCESS != res /*&& C.OCI_STILL_EXECUTING != res* /) {
fmt.Printf( "Resultado OCIDefineByPos=%v\n", res)
C.AuxOCIErrorGet( s.con.driver.hError);
return -2
}
var surnameValue [40]C.char
res = C.OCIDefineByPos( s.hStatement, &s.hDefine, s.con.driver.hError, 2 /*pos* /, unsafe.Pointer(&surnameValue[0]), C.sb4(unsafe.Sizeof(surnameValue)), C.SQLT_STR, nil, nil, nil, C.OCI_DEFAULT);
if (C.OCI_SUCCESS != res /*&& C.OCI_STILL_EXECUTING != res* /) {
fmt.Printf( "Resultado OCIDefineByPos=%v\n", res)
C.AuxOCIErrorGet( s.con.driver.hError);
return -3
}
*/
res = C.OCIAttrGet(unsafe.Pointer(s.hStatement), C.OCI_HTYPE_STMT, unsafe.Pointer(&s.numColumns), nil, C.OCI_ATTR_PARAM_COUNT, s.con.driver.hError)
if C.OCI_SUCCESS != res /*&& C.OCI_STILL_EXECUTING != res*/ {
fmt.Printf("Resultado OCIAttrGet=%v\n", res)
C.AuxOCIErrorGet(s.con.driver.hError)
return -3
}
fmt.Printf("numColumns=%v\n", s.numColumns)
s.columns = make([]*ColumnOracle, 0, 50)
var hColumn C.ub4
pColumn := unsafe.Pointer(&hColumn)
for i := 1; i <= s.numColumns; i++ {
/* get parameter for column i */
res = C.OCIParamGet(unsafe.Pointer(s.hStatement), C.OCI_HTYPE_STMT, s.con.driver.hError, &pColumn, C.ub4(i))
if C.OCI_SUCCESS != res /*&& C.OCI_STILL_EXECUTING != res*/ {
fmt.Printf("Resultado OCIParamGet=%v\n", res)
C.AuxOCIErrorGet(s.con.driver.hError)
return -4
}
/* get data-type of column i */
var columnType C.ub2
pType := unsafe.Pointer(&columnType)
res = C.OCIAttrGet(pColumn, C.OCI_DTYPE_PARAM, pType, nil, C.OCI_ATTR_DATA_TYPE, s.con.driver.hError)
if C.OCI_SUCCESS != res /*&& C.OCI_STILL_EXECUTING != res*/ {
fmt.Printf("Resultado OCIParamGet=%v\n", res)
C.AuxOCIErrorGet(s.con.driver.hError)
return -4
}
size := C.ub4(100)
var column_name_tmp *C.char
res = C.OCIAttrGet(pColumn, C.OCI_DTYPE_PARAM, unsafe.Pointer(&column_name_tmp), nil, C.OCI_ATTR_NAME, s.con.driver.hError)
fmt.Printf("coumnName (size=%v) = %v\n", size, column_name_tmp)
//column_name_tmp[size] = 0
columnName := C.GoString(column_name_tmp)
var columnSize int
res = C.OCIAttrGet(pColumn, C.OCI_DTYPE_PARAM, unsafe.Pointer(&columnSize), nil, C.OCI_ATTR_DATA_SIZE, s.con.driver.hError)
fmt.Printf("Column:%v Name:%v Size:%v Type:%v\n", i, columnName, columnSize, columnType)
switch columnType {
case C.SQLT_CHR:
var columnValue = make([]C.char, columnSize+1)
res = C.OCIDefineByPos(s.hStatement, &s.hDefine, s.con.driver.hError, C.ub4(i), /*pos*/
unsafe.Pointer(&columnValue[0]), C.sb4(columnSize), columnType, nil, nil, nil, C.OCI_DEFAULT)
if C.OCI_SUCCESS != res /*&& C.OCI_STILL_EXECUTING != res*/ {
fmt.Printf("Resultado OCIDefineByPos=%v\n", res)
C.AuxOCIErrorGet(s.con.driver.hError)
return -2
}
s.columns = append(s.columns, NewColumnChrOracle(s, columnName, int(columnSize), columnValue))
case C.SQLT_NUM:
var columnValue int
res = C.OCIDefineByPos(s.hStatement, &s.hDefine, s.con.driver.hError, C.ub4(i), /*pos*/
unsafe.Pointer(&columnValue), C.sb4(4 /*sizeof(columnValue)*/), columnType, nil, nil, nil, C.OCI_DEFAULT)
if C.OCI_SUCCESS != res /*&& C.OCI_STILL_EXECUTING != res*/ {
fmt.Printf("Resultado OCIDefineByPos=%v\n", res)
C.AuxOCIErrorGet(s.con.driver.hError)
return -2
}
s.columns = append(s.columns, NewColumnNumberOracle(s, columnName, int(columnSize), columnValue))
//case C.SQLT_LNG:
//case C.SQLT_RID:
//case C.SQLT_DAT:
//case C.SQLT_BIN:
//case C.SQLT_LBI:
//case C.SQLT_AFC:
//case C.SQLT_REF:
//case C.SQLT_CLOB:
//case C.SQLT_BLOB:
//case C.SQLT_BFILEE:
//case C.SQLT_TIMESTAMP:
//case C.SQLT_TIME_TZ:
//case C.SQLT_INTERVAL_YM:
//case C.SQLT_INTERVAL_DS:
//case C.SQLT_TIMESTAMP_LTZ:
//case C.SQLT_RDD:
default:
s.columns = append(s.columns, NewColumnUnknownOracle(s, columnName, int(columnSize), int(columnType)))
}
fmt.Printf("Next len(stmt.columns)=%v\n", len(s.columns))
}
//return 0
}
res := C.OCIStmtFetch2(s.hStatement, s.con.driver.hError, 1 /*nrows*/, C.OCI_FETCH_NEXT, 0, C.OCI_DEFAULT)
if C.OCI_SUCCESS != res && C.OCI_NO_DATA != res {
fmt.Printf("Resultado OCIStmtFetch2=%v\n", res)
C.AuxOCIErrorGet(s.con.driver.hError)
return -4
} else if C.OCI_NO_DATA == res {
//fmt.Printf( "The result is:%v-%v\n", idValue, C.GoString(&surnameValue[0]))
return 0
}
return 1
}