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command.go
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command.go
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package go_ora
import (
"database/sql/driver"
"encoding/binary"
"errors"
"fmt"
"time"
"github.com/chenyb888/go-ora/converters"
"github.com/chenyb888/go-ora/network"
"regexp"
"strings"
)
type StmtType int
const (
SELECT StmtType = 1
DML StmtType = 2
PLSQL StmtType = 3
OTHERS StmtType = 4
)
type StmtInterface interface {
hasMoreRows() bool
noOfRowsToFetch() int
fetch(dataSet *DataSet) error
hasBLOB() bool
hasLONG() bool
//write() error
//getExeOption() int
read(dataSet *DataSet) error
//Close() error
//Exec(args []driver.Value) (driver.Result, error)
//Query(args []driver.Value) (driver.rows, error)
}
type defaultStmt struct {
connection *Connection
text string
arrayBindingCount int
disableCompression bool
_hasLONG bool
_hasBLOB bool
_hasMoreRows bool
_hasReturnClause bool
_noOfRowsToFetch int
stmtType StmtType
cursorID int
queryID uint64
Pars []ParameterInfo
columns []ParameterInfo
scnFromExe []int
arrayBindCount int
}
func (stmt *defaultStmt) hasMoreRows() bool {
return stmt._hasMoreRows
}
func (stmt *defaultStmt) noOfRowsToFetch() int {
return stmt._noOfRowsToFetch
}
func (stmt *defaultStmt) hasLONG() bool {
return stmt._hasLONG
}
func (stmt *defaultStmt) hasBLOB() bool {
return stmt._hasBLOB
}
func (stmt *defaultStmt) basicWrite(exeOp int, parse, define bool) error {
session := stmt.connection.session
session.PutBytes(3, 0x5E, 0)
session.PutUint(exeOp, 4, true, true)
session.PutUint(stmt.cursorID, 2, true, true)
if stmt.cursorID == 0 {
session.PutBytes(1)
} else {
session.PutBytes(0)
}
if parse {
session.PutUint(len(stmt.connection.strConv.Encode(stmt.text)), 4, true, true)
session.PutBytes(1)
} else {
session.PutBytes(0, 1)
}
session.PutUint(13, 2, true, true)
session.PutBytes(0, 0)
if exeOp&0x40 == 0 && exeOp&0x20 != 0 && exeOp&0x1 != 0 && stmt.stmtType == SELECT {
session.PutBytes(0)
session.PutUint(stmt._noOfRowsToFetch, 4, true, true)
} else {
session.PutUint(0, 4, true, true)
session.PutUint(0, 4, true, true)
}
// add fetch size = max(int32)
session.PutUint(0x7FFFFFFF, 4, true, true)
if len(stmt.Pars) > 0 {
session.PutBytes(1)
session.PutUint(len(stmt.Pars), 2, true, true)
} else {
session.PutBytes(0, 0)
}
session.PutBytes(0, 0, 0, 0, 0)
if define {
session.PutBytes(1)
session.PutUint(len(stmt.columns), 2, true, true)
} else {
session.PutBytes(0, 0)
}
if session.TTCVersion >= 4 {
session.PutBytes(0, 0, 1)
}
if session.TTCVersion >= 5 {
session.PutBytes(0, 0, 0, 0, 0)
}
if parse {
session.PutClr(stmt.connection.strConv.Encode(stmt.text))
}
if define {
session.PutBytes(0)
for x := 0; x < len(stmt.columns); x++ {
stmt.columns[x].Flag = 3
stmt.columns[x].CharsetForm = 1
//stmt.columns[x].MaxLen = 0x7fffffff
err := stmt.columns[x].write(session)
if err != nil {
return err
}
session.PutBytes(0)
}
} else {
al8i4 := make([]int, 13)
if exeOp&1 <= 0 {
al8i4[0] = 0
} else {
al8i4[0] = 1
}
switch stmt.stmtType {
case DML:
fallthrough
case PLSQL:
if stmt.arrayBindCount <= 1 {
al8i4[1] = 1
} else {
al8i4[1] = stmt.arrayBindCount
}
case OTHERS:
al8i4[1] = 1
default:
al8i4[1] = stmt._noOfRowsToFetch
}
if len(stmt.scnFromExe) == 2 {
al8i4[5] = stmt.scnFromExe[0]
al8i4[6] = stmt.scnFromExe[1]
} else {
al8i4[5] = 0
al8i4[6] = 0
}
if stmt.stmtType == SELECT {
al8i4[7] = 1
} else {
al8i4[7] = 0
}
for x := 0; x < len(al8i4); x++ {
session.PutUint(al8i4[x], 4, true, true)
}
}
for _, par := range stmt.Pars {
_ = par.write(session)
}
return nil
}
type Stmt struct {
defaultStmt
//reExec bool
reSendParDef bool
parse bool // means parse the command in the server this occur if the stmt is not cached
execute bool
define bool
//noOfDefCols int
}
type QueryResult struct {
lastInsertedID int64
rowsAffected int64
}
func (rs *QueryResult) LastInsertId() (int64, error) {
return rs.lastInsertedID, nil
}
func (rs *QueryResult) RowsAffected() (int64, error) {
return rs.rowsAffected, nil
}
func NewStmt(text string, conn *Connection) *Stmt {
ret := &Stmt{
//connection: conn,
//text: text,
//reExec: false,
reSendParDef: false,
parse: true,
execute: true,
define: false,
//hasLONG: false,
//hasBLOB: false,
//disableCompression: true,
//arrayBindCount: 1,
//parse: true,
//execute: true,
//define: false,
//scnFromExe: make([]int, 2),
}
ret.connection = conn
ret.text = text
ret._hasBLOB = false
ret._hasLONG = false
ret.disableCompression = true
ret.arrayBindCount = 1
ret.scnFromExe = make([]int, 2)
// get stmt type
uCmdText := strings.TrimSpace(strings.ToUpper(text))
if strings.HasPrefix(uCmdText, "SELECT") || strings.HasPrefix(uCmdText, "WITH") {
ret.stmtType = SELECT
} else if strings.HasPrefix(uCmdText, "UPDATE") ||
strings.HasPrefix(uCmdText, "INSERT") ||
strings.HasPrefix(uCmdText, "DELETE") {
ret.stmtType = DML
} else if strings.HasPrefix(uCmdText, "DECLARE") || strings.HasPrefix(uCmdText, "BEGIN") {
ret.stmtType = PLSQL
} else {
ret.stmtType = OTHERS
}
// returning clause
var err error
ret._hasReturnClause, err = regexp.MatchString(`\bRETURNING\b`, uCmdText)
if err != nil {
ret._hasReturnClause = false
}
return ret
}
func (stmt *Stmt) write(session *network.Session) error {
if !stmt.parse && stmt.stmtType == DML && !stmt.reSendParDef {
exeOf := 0
execFlag := 0
count := stmt.arrayBindCount
if stmt.stmtType == SELECT {
session.PutBytes(3, 0x4E, 0)
count = stmt._noOfRowsToFetch
exeOf = 0x20
if stmt._hasReturnClause || stmt.stmtType == PLSQL || stmt.disableCompression {
exeOf |= 0x40000
}
} else {
session.PutBytes(3, 4, 0)
}
if stmt.connection.autoCommit {
execFlag = 1
}
session.PutUint(stmt.cursorID, 2, true, true)
session.PutUint(count, 2, true, true)
session.PutUint(exeOf, 2, true, true)
session.PutUint(execFlag, 2, true, true)
} else {
//stmt.reExec = true
err := stmt.basicWrite(stmt.getExeOption(), stmt.parse, stmt.define)
if err != nil {
return err
}
stmt.parse = false
stmt.define = false
if stmt.connection.dBVersion.Number >= 10102 {
stmt.reSendParDef = false
} else {
stmt.reSendParDef = true
}
}
//if !stmt.reExec {
//exeOp := stmt.getExeOption()
//session.PutBytes(3, 0x5E, 0)
//session.PutUint(exeOp, 4, true, true)
//session.PutUint(stmt.cursorID, 2, true, true)
//if stmt.cursorID == 0 {
// session.PutBytes(1)
// //session.PutUint(1, 1, false, false)
//} else {
// session.PutBytes(0)
// //session.PutUint(0, 1, false, false)
//}
//session.PutUint(len(stmt.text), 4, true, true)
//session.PutBytes(1)
//session.PutUint(1, 1, false, false)
//session.PutUint(13, 2, true, true)
//session.PutBytes(0, 0)
//if exeOp&0x40 == 0 && exeOp&0x20 != 0 && exeOp&0x1 != 0 && stmt.stmtType == SELECT {
// session.PutBytes(0)
// //session.PutUint(0, 1, false, false)
// session.PutUint(stmt.noOfRowsToFetch, 4, true, true)
//} else {
// session.PutUint(0, 4, true, true)
// session.PutUint(0, 4, true, true)
//}
// longFetchSize == 0 marshal 1 else marshal longFetchSize
//session.PutUint(1, 4, true, true)
//if len(stmt.Pars) > 0 {
// session.PutBytes(1)
// //session.PutUint(1, 1, false, false)
// session.PutUint(len(stmt.Pars), 2, true, true)
//} else {
// session.PutBytes(0, 0)
// //session.PutUint(0, 1, false, false)
// //session.PutUint(0, 1, false, false)
//}
//session.PutBytes(0, 0, 0, 0, 0)
//if stmt.define {
// session.PutBytes(1)
// //session.PutUint(1, 1, false, false)
// session.PutUint(stmt.noOfDefCols, 2, true, true)
//} else {
// session.PutBytes(0, 0)
// //session.PutUint(0, 1, false, false)
// //session.PutUint(0, 1, false, false)
//}
//if session.TTCVersion >= 4 {
// session.PutBytes(0, 0, 1)
// //session.PutUint(0, 1, false, false) // dbChangeRegisterationId
// //session.PutUint(0, 1, false, false)
// //session.PutUint(1, 1, false, false)
//}
//if session.TTCVersion >= 5 {
// session.PutBytes(0, 0, 0, 0, 0)
// //session.PutUint(0, 1, false, false)
// //session.PutUint(0, 1, false, false)
// //session.PutUint(0, 1, false, false)
// //session.PutUint(0, 1, false, false)
// //session.PutUint(0, 1, false, false)
//}
//session.PutBytes([]byte(stmt.text)...)
//for x := 0; x < len(stmt.al8i4); x++ {
// session.PutUint(stmt.al8i4[x], 2, true, true)
//}
//for _, par := range stmt.Pars {
// _ = par.write(session)
//}
//stmt.reExec = true
//stmt.parse = false
//} else {
//
//}
if len(stmt.Pars) > 0 {
for x := 0; x < stmt.arrayBindCount; x++ {
session.PutBytes(7)
for _, par := range stmt.Pars {
if par.DataType != RAW {
if par.DataType == REFCURSOR {
session.PutBytes(1, 0)
} else {
session.PutClr(par.BValue)
}
}
}
for _, par := range stmt.Pars {
if par.DataType == RAW {
session.PutClr(par.BValue)
}
}
}
//session.PutUint(7, 1, false, false)
//for _, par := range stmt.Pars {
// session.PutClr(par.BValue)
//}
}
return session.Write()
}
func (stmt *Stmt) getExeOption() int {
op := 0
if stmt.stmtType == PLSQL || stmt._hasReturnClause {
op |= 0x40000
}
if stmt.arrayBindCount > 1 {
op |= 0x80000
}
if stmt.connection.autoCommit && (stmt.stmtType == DML || stmt.stmtType == PLSQL) {
op |= 0x100
}
if stmt.parse {
op |= 1
}
if stmt.execute {
op |= 0x20
}
if !stmt.parse && !stmt.execute {
op |= 0x40
}
if len(stmt.Pars) > 0 {
op |= 0x8
if stmt.stmtType == PLSQL || stmt._hasReturnClause {
op |= 0x400
}
}
if stmt.stmtType != PLSQL && !stmt._hasReturnClause {
op |= 0x8000
}
if stmt.define {
op |= 0x10
}
return op
/* HasReturnClause
if stmt.PLSQL or cmdText == "" return false
Regex.IsMatch(cmdText, "\\bRETURNING\\b"
*/
}
func (stmt *defaultStmt) fetch(dataSet *DataSet) error {
stmt.connection.session.ResetBuffer()
stmt.connection.session.PutBytes(3, 5, 0)
stmt.connection.session.PutInt(stmt.cursorID, 2, true, true)
stmt.connection.session.PutInt(stmt._noOfRowsToFetch, 2, true, true)
err := stmt.connection.session.Write()
if err != nil {
return err
}
return stmt.read(dataSet)
}
func (stmt *defaultStmt) read(dataSet *DataSet) error {
loop := true
after7 := false
containOutputPars := false
dataSet.parent = stmt
session := stmt.connection.session
for loop {
msg, err := session.GetByte()
if err != nil {
return err
}
switch msg {
case 4:
stmt.connection.session.Summary, err = network.NewSummary(session)
if err != nil {
return err
}
stmt.connection.connOption.Tracer.Printf("Summary: RetCode:%d, Error Message:%q", stmt.connection.session.Summary.RetCode, string(stmt.connection.session.Summary.ErrorMessage))
stmt.cursorID = stmt.connection.session.Summary.CursorID
stmt.disableCompression = stmt.connection.session.Summary.Flags&0x20 != 0
if stmt.connection.session.HasError() {
if stmt.connection.session.Summary.RetCode == 1403 {
stmt._hasMoreRows = false
stmt.connection.session.Summary = nil
} else {
return stmt.connection.session.GetError()
}
}
loop = false
case 6:
//_, err = session.GetByte()
err = dataSet.load(session)
if err != nil {
return err
}
if !after7 {
if stmt.stmtType == SELECT {
}
}
case 7:
after7 = true
if stmt._hasReturnClause && containOutputPars {
for x := 0; x < len(stmt.Pars); x++ {
if stmt.Pars[x].Direction == Output {
num, err := session.GetInt(4, true, true)
if err != nil {
return err
}
if num > 1 {
return errors.New("more than one row affected with return clause")
}
if num == 0 {
stmt.Pars[x].BValue = nil
stmt.Pars[x].Value = nil
} else {
stmt.Pars[x].BValue, err = session.GetClr()
if err != nil {
return err
}
err = stmt.calculateParameterValue(&stmt.Pars[x])
if err != nil {
return err
}
_, err = session.GetInt(2, true, true)
if err != nil {
return err
}
}
}
}
} else {
if containOutputPars {
for x := 0; x < len(stmt.Pars); x++ {
if stmt.Pars[x].DataType == REFCURSOR {
cursor := RefCursor{}
cursor.connection = stmt.connection
cursor.parent = stmt
err = cursor.load(session)
if err != nil {
return err
}
stmt.Pars[x].Value = cursor
} else {
if stmt.Pars[x].Direction != Input {
stmt.Pars[x].BValue, err = session.GetClr()
if err != nil {
return err
}
err = stmt.calculateParameterValue(&stmt.Pars[x])
if err != nil {
return err
}
_, err = session.GetInt(2, true, true)
if err != nil {
return err
}
} else {
//_, err = session.GetClr()
}
}
}
} else {
// see if it is re-execute
//fmt.Println(dataSet.Cols)
if len(dataSet.Cols) == 0 && len(stmt.columns) > 0 {
dataSet.Cols = make([]ParameterInfo, len(stmt.columns))
copy(dataSet.Cols, stmt.columns)
}
for x := 0; x < len(dataSet.Cols); x++ {
if dataSet.Cols[x].getDataFromServer {
if dataSet.Cols[x].DataType == ROWID {
rowid, err := newRowID(session)
if err != nil {
return err
}
if rowid == nil {
dataSet.Cols[x].Value = nil
} else {
dataSet.Cols[x].Value = string(rowid.getBytes())
}
continue
}
dataSet.Cols[x].BValue, err = session.GetClr()
//fmt.Println("buffer: ", temp)
if err != nil {
return err
}
err = stmt.calculateParameterValue(&dataSet.Cols[x])
if err != nil {
return err
}
if dataSet.Cols[x].DataType == LONG || dataSet.Cols[x].DataType == LongRaw {
_, err = session.GetInt(4, true, true)
if err != nil {
return err
}
_, err = session.GetInt(4, true, true)
if err != nil {
return err
}
}
//if temp == nil {
// dataSet.currentRow[x] = nil
// if dataSet.Cols[x].DataType == LONG || dataSet.Cols[x].DataType == LongRaw {
// _, err = session.GetBytes(2)
// if err != nil {
// return err
// }
// _, err = session.GetInt(4, true, true)
// if err != nil {
// return err
// }
// }
//} else {
// //switch (this.m_definedColumnType)
// //{
// //case OraType.ORA_TIMESTAMP_DTY:
// //case OraType.ORA_TIMESTAMP:
// //case OraType.ORA_TIMESTAMP_LTZ_DTY:
// //case OraType.ORA_TIMESTAMP_LTZ:
// // this.m_marshallingEngine.UnmarshalCLR_ColData(11);
// // break;
// //case OraType.ORA_TIMESTAMP_TZ_DTY:
// //case OraType.ORA_TIMESTAMP_TZ:
// // this.m_marshallingEngine.UnmarshalCLR_ColData(13);
// // break;
// //case OraType.ORA_INTERVAL_YM_DTY:
// //case OraType.ORA_INTERVAL_DS_DTY:
// //case OraType.ORA_INTERVAL_YM:
// //case OraType.ORA_INTERVAL_DS:
// //case OraType.ORA_IBFLOAT:
// //case OraType.ORA_IBDOUBLE:
// //case OraType.ORA_RAW:
// //case OraType.ORA_CHAR:
// //case OraType.ORA_CHARN:
// //case OraType.ORA_VARCHAR:
// // this.m_marshallingEngine.UnmarshalCLR_ColData(this.m_colMetaData.m_maxLength);
// // break;
// //case OraType.ORA_RESULTSET:
// // throw new InvalidOperationException();
// //case OraType.ORA_NUMBER:
// //case OraType.ORA_FLOAT:
// //case OraType.ORA_VARNUM:
// // this.m_marshallingEngine.UnmarshalCLR_ColData(21);
// // break;
// //case OraType.ORA_DATE:
// // this.m_marshallingEngine.UnmarshalCLR_ColData(7);
// // break;
// //default:
// // throw new Exception("UnmarshalColumnData: Unimplemented type");
// //}
// //fmt.Println("type: ", dataSet.Cols[x].DataType)
// switch dataSet.Cols[x].DataType {
// case NCHAR, CHAR, LONG:
// if stmt.connection.strConv.GetLangID() != dataSet.Cols[x].CharsetID {
// tempCharset := stmt.connection.strConv.GetLangID()
// stmt.connection.strConv.SetLangID(dataSet.Cols[x].CharsetID)
// dataSet.currentRow[x] = stmt.connection.strConv.Decode(temp)
// stmt.connection.strConv.SetLangID(tempCharset)
// } else {
// dataSet.currentRow[x] = stmt.connection.strConv.Decode(temp)
// }
//
// case NUMBER:
// dataSet.currentRow[x] = converters.DecodeNumber(temp)
// // if dataSet.Cols[x].Scale == 0 {
// // dataSet.currentRow[x] = int64(converters.DecodeInt(temp))
// // } else {
// // dataSet.currentRow[x] = converters.DecodeDouble(temp)
// // //base := math.Pow10(int(dataSet.Cols[x].Scale))
// // //if dataSet.Cols[x].Scale < 0x80 {
// // // dataSet.currentRow[x] = math.Round(converters.DecodeDouble(temp)*base) / base
// // //} else {
// // // dataSet.currentRow[x] = converters.DecodeDouble(temp)
// // //}
// // }
// case TimeStamp:
// fallthrough
// case TimeStampDTY:
// fallthrough
// case TimeStampeLTZ:
// fallthrough
// case TimeStampLTZ_DTY:
// fallthrough
// case TimeStampTZ:
// fallthrough
// case TimeStampTZ_DTY:
// fallthrough
// case DATE:
// dateVal, err := converters.DecodeDate(temp)
// if err != nil {
// return err
// }
// dataSet.currentRow[x] = dateVal
// //case :
// // data, err := session.GetClr()
// // if err != nil {
// // return err
// // }
// // lob := &Lob{
// // sourceLocator: data,
// // }
// // session.SaveState()
// // dataSize, err := lob.getSize(session)
// // if err != nil {
// // return err
// // }
// // lobData, err := lob.getData(session)
// // if err != nil {
// // return err
// // }
// // if dataSize != int64(len(lobData)) {
// // return errors.New("error reading lob data")
// // }
// // session.LoadState()
// //
// case OCIBlobLocator, OCIClobLocator:
// data, err := session.GetClr()
// if err != nil {
// return err
// }
// lob := &Lob{
// sourceLocator: data,
// }
// session.SaveState()
// dataSize, err := lob.getSize(stmt.connection)
// if err != nil {
// return err
// }
// lobData, err := lob.getData(stmt.connection)
// if err != nil {
// return err
// }
// session.LoadState()
// if dataSet.Cols[x].DataType == OCIBlobLocator {
// if dataSize != int64(len(lobData)) {
// return errors.New("error reading lob data")
// }
// dataSet.currentRow[x] = lobData
// } else {
// tempCharset := stmt.connection.strConv.GetLangID()
// if lob.variableWidthChar() {
// if stmt.connection.dBVersion.Number < 10200 && lob.littleEndianClob() {
// stmt.connection.strConv.SetLangID(2002)
// } else {
// stmt.connection.strConv.SetLangID(2000)
// }
// } else {
// stmt.connection.strConv.SetLangID(dataSet.Cols[x].CharsetID)
// }
// resultClobString := stmt.connection.strConv.Decode(lobData)
// stmt.connection.strConv.SetLangID(tempCharset)
// if dataSize != int64(len([]rune(resultClobString))) {
// return errors.New("error reading clob data")
// }
// dataSet.currentRow[x] = resultClobString
// }
// default:
// dataSet.currentRow[x] = temp
// }
// if dataSet.Cols[x].DataType == LONG || dataSet.Cols[x].DataType == LongRaw {
// _, err = session.GetInt(4, true, true)
// if err != nil {
// return err
// }
// _, err = session.GetInt(4, true, true)
// if err != nil {
// return err
// }
// }
//}
}
}
newRow := make(Row, dataSet.ColumnCount)
for x := 0; x < len(dataSet.Cols); x++ {
newRow[x] = dataSet.Cols[x].Value
}
//copy(newRow, dataSet.currentRow)
dataSet.Rows = append(dataSet.Rows, newRow)
}
}
case 8:
size, err := session.GetInt(2, true, true)
if err != nil {
return err
}
for x := 0; x < 2; x++ {
stmt.scnFromExe[x], err = session.GetInt(4, true, true)
if err != nil {
return err
}
}
for x := 2; x < size; x++ {
_, err = session.GetInt(4, true, true)
if err != nil {
return err
}
}
_, err = session.GetInt(2, true, true)
//fmt.Println(num)
//if (num > 0)
// this.m_marshallingEngine.UnmarshalNBytes_ScanOnly(num);
// get session timezone
size, err = session.GetInt(2, true, true)
for x := 0; x < size; x++ {
_, val, num, err := session.GetKeyVal()
if err != nil {
return err
}
//fmt.Println(key, val, num)
if num == 163 {
session.TimeZone = val
//fmt.Println("session time zone", session.TimeZone)
}
}
if session.TTCVersion >= 4 {
// get queryID
size, err = session.GetInt(4, true, true)
if err != nil {
return err
}
if size > 0 {
bty, err := session.GetBytes(size)
if err != nil {
return err
}
if len(bty) >= 8 {
stmt.queryID = binary.LittleEndian.Uint64(bty[size-8:])
fmt.Println("query ID: ", stmt.queryID)
}
}
}
case 11:
err = dataSet.load(session)
if err != nil {
return err
}
//dataSet.BindDirections = make([]byte, dataSet.columnCount)
for x := 0; x < dataSet.ColumnCount; x++ {
direction, err := session.GetByte()
switch direction {
case 32:
stmt.Pars[x].Direction = Input
case 16:
stmt.Pars[x].Direction = Output
containOutputPars = true
case 48:
stmt.Pars[x].Direction = InOut
containOutputPars = true
}
if err != nil {
return err
}
}
case 16:
size, err := session.GetByte()
if err != nil {
return err
}
_, err = session.GetBytes(int(size))
if err != nil {
return err
}
dataSet.MaxRowSize, err = session.GetInt(4, true, true)
if err != nil {
return err
}
dataSet.ColumnCount, err = session.GetInt(4, true, true)
if err != nil {
return err
}
if dataSet.ColumnCount > 0 {
_, err = session.GetByte() // session.GetInt(1, false, false)
}
dataSet.Cols = make([]ParameterInfo, dataSet.ColumnCount)
for x := 0; x < dataSet.ColumnCount; x++ {
err = dataSet.Cols[x].load(session)
if err != nil {
return err
}
if dataSet.Cols[x].DataType == LONG || dataSet.Cols[x].DataType == LongRaw {
stmt._hasLONG = true
}
if dataSet.Cols[x].DataType == OCIClobLocator || dataSet.Cols[x].DataType == OCIBlobLocator {
stmt._hasBLOB = true
}
}
stmt.columns = make([]ParameterInfo, dataSet.ColumnCount)
copy(stmt.columns, dataSet.Cols)
_, err = session.GetDlc()
if session.TTCVersion >= 3 {
_, err = session.GetInt(4, true, true)
_, err = session.GetInt(4, true, true)
}
if session.TTCVersion >= 4 {
_, err = session.GetInt(4, true, true)
_, err = session.GetInt(4, true, true)
}
if session.TTCVersion >= 5 {
_, err = session.GetDlc()
}
case 21:
_, err := session.GetInt(2, true, true) // noOfColumnSent
if err != nil {
return err
}
bitVectorLen := dataSet.ColumnCount / 8
if dataSet.ColumnCount%8 > 0 {
bitVectorLen++
}
bitVector := make([]byte, bitVectorLen)
for x := 0; x < bitVectorLen; x++ {
bitVector[x], err = session.GetByte()
if err != nil {
return err
}
}
dataSet.setBitVector(bitVector)
default:
loop = false
}
}
if stmt.connection.connOption.Tracer.IsOn() {
dataSet.Trace(stmt.connection.connOption.Tracer)
}
return nil
}
func (stmt *defaultStmt) calculateParameterValue(param *ParameterInfo) error {
//var ret driver.Value
session := stmt.connection.session
if param.BValue == nil {
param.Value = nil
return nil
}
switch param.DataType {
case NCHAR, CHAR, LONG:
if stmt.connection.strConv.GetLangID() != param.CharsetID {
tempCharset := stmt.connection.strConv.GetLangID()
stmt.connection.strConv.SetLangID(param.CharsetID)
param.Value = stmt.connection.strConv.Decode(param.BValue)
stmt.connection.strConv.SetLangID(tempCharset)
} else {
param.Value = stmt.connection.strConv.Decode(param.BValue)
}
case NUMBER:
param.Value = converters.DecodeNumber(param.BValue)
case TimeStamp:
fallthrough
case TimeStampDTY:
fallthrough
case TimeStampeLTZ:
fallthrough
case TimeStampLTZ_DTY:
fallthrough
case TimeStampTZ:
fallthrough
case TimeStampTZ_DTY:
fallthrough
case DATE:
dateVal, err := converters.DecodeDate(param.BValue)
if err != nil {
return err
}
param.Value = dateVal
case OCIBlobLocator, OCIClobLocator:
data, err := session.GetClr()
if err != nil {
return err
}
lob := &Lob{
sourceLocator: data,
}
session.SaveState(nil)
dataSize, err := lob.getSize(stmt.connection)
if err != nil {
return err
}
lobData, err := lob.getData(stmt.connection)
if err != nil {
return err
}
session.LoadState()
if param.DataType == OCIBlobLocator {
if dataSize != int64(len(lobData)) {
return errors.New("error reading lob data")
}
param.Value = lobData
} else {
tempCharset := stmt.connection.strConv.GetLangID()
if lob.variableWidthChar() {
if stmt.connection.dBVersion.Number < 10200 && lob.littleEndianClob() {
stmt.connection.strConv.SetLangID(2002)
} else {
stmt.connection.strConv.SetLangID(2000)
}
} else {
stmt.connection.strConv.SetLangID(param.CharsetID)
}
resultClobString := stmt.connection.strConv.Decode(lobData)
stmt.connection.strConv.SetLangID(tempCharset)
if dataSize != int64(len([]rune(resultClobString))) {
return errors.New("error reading clob data")
}
param.Value = resultClobString
}
default:
param.Value = param.BValue
}
return nil
}
func (stmt *defaultStmt) Close() error {
if stmt.cursorID != 0 {
session := stmt.connection.session
session.ResetBuffer()
session.PutBytes(17, 105, 0, 1, 1, 1)
session.PutInt(stmt.cursorID, 4, true, true)
if stmt.connection.dBVersion.Number >= 10102 {