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connection.go
executable file
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connection.go
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package go_ora
import (
"context"
"database/sql"
"database/sql/driver"
"encoding/binary"
"errors"
"fmt"
"github.com/sijms/go-ora/v2/configurations"
"github.com/sijms/go-ora/v2/trace"
"os"
"reflect"
"regexp"
"strconv"
"strings"
"time"
"github.com/sijms/go-ora/v2/advanced_nego"
"github.com/sijms/go-ora/v2/converters"
"github.com/sijms/go-ora/v2/network"
)
type ConnectionState int
const (
Closed ConnectionState = 0
Opened ConnectionState = 1
)
type LogonMode int
const (
NoNewPass LogonMode = 0x1
SysDba LogonMode = 0x20
SysOper LogonMode = 0x40
UserAndPass LogonMode = 0x100
//WithNewPass LogonMode = 0x2
//PROXY LogonMode = 0x400
)
// from GODROR
const wrapResultset = "--WRAP_RESULTSET--"
// Querier is the QueryContext of sql.Conn.
type Querier interface {
QueryContext(context.Context, string, ...interface{}) (*sql.Rows, error)
}
/////
type NLSData struct {
Calender string `db:"p_nls_calendar,,40,out"`
Comp string `db:"p_nls_comp,,40,out"`
Language string
LengthSemantics string `db:"p_nls_length_semantics,,40,out"`
NCharConvExcep string `db:"p_nls_nchar_conv_excep,,40,out"`
NCharConvImp string
DateLang string `db:"p_nls_date_lang,,40,out"`
Sort string `db:"p_nls_sort,,40,out"`
Currency string `db:"p_nls_currency,,40,out"`
DateFormat string `db:"p_nls_date_format,,40,out"`
TimeFormat string
IsoCurrency string `db:"p_nls_iso_currency,,40,out"`
NumericChars string `db:"p_nls_numeric_chars,,40,out"`
DualCurrency string `db:"p_nls_dual_currency,,40,out"`
UnionCurrency string
Timestamp string `db:"p_nls_timestamp,,48,out"`
TimestampTZ string `db:"p_nls_timestamp_tz,,56,out"`
TTimezoneFormat string
NTimezoneFormat string
Territory string
Charset string
}
type Connection struct {
State ConnectionState
LogonMode LogonMode
autoCommit bool
//conStr *ConnectionString
tracer trace.Tracer
connOption *configurations.ConnectionConfig
session *network.Session
tcpNego *TCPNego
dataNego *DataTypeNego
authObject *AuthObject
SessionProperties map[string]string
dBVersion *DBVersion
sessionID int
serialID int
transactionID []byte
sStrConv converters.IStringConverter
nStrConv converters.IStringConverter
cStrConv converters.IStringConverter
NLSData NLSData
cusTyp map[string]customType
maxLen struct {
varchar int
nvarchar int
raw int
number int
date int
timestamp int
}
bad bool
dbTimeZone *time.Location
dbServerTimeZone *time.Location
}
type OracleConnector struct {
drv *OracleDriver
connectString string
dialer configurations.DialerContext
}
func NewConnector(connString string) driver.Connector {
return &OracleConnector{connectString: connString, drv: NewDriver()}
}
func (driver *OracleDriver) OpenConnector(connString string) (driver.Connector, error) {
// create hash from connection string
return &OracleConnector{drv: driver, connectString: connString}, nil
}
func (connector *OracleConnector) Connect(ctx context.Context) (driver.Conn, error) {
conn, err := NewConnection(connector.connectString, connector.drv.connOption)
if err != nil {
return nil, err
}
conn.cusTyp = connector.drv.cusTyp
if connector.drv.sStrConv != nil {
conn.sStrConv = connector.drv.sStrConv.Clone()
}
if connector.drv.nStrConv != nil {
conn.nStrConv = connector.drv.nStrConv.Clone()
}
conn.connOption.Dialer = connector.dialer
err = conn.OpenWithContext(ctx)
if err != nil {
return nil, err
}
err = connector.drv.init(conn)
if err != nil {
return nil, err
}
return conn, nil
}
func (connector *OracleConnector) Driver() driver.Driver {
return connector.drv
}
func (connector *OracleConnector) Dialer(dialer configurations.DialerContext) {
connector.dialer = dialer
}
// Open return a new open connection
func (driver *OracleDriver) Open(name string) (driver.Conn, error) {
conn, err := NewConnection(name, driver.connOption)
conn.cusTyp = driver.cusTyp
if err != nil {
return nil, err
}
err = conn.Open()
if err != nil {
return nil, err
}
err = driver.init(conn)
if err != nil {
return nil, err
}
return conn, nil
}
// GetNLS return NLS properties of the connection.
// this function is left from v1. but v2 is using another method
func (conn *Connection) GetNLS() (*NLSData, error) {
// we read from sys.nls_session_parameters ONCE
cmdText := `
BEGIN
SELECT
MAX(CASE WHEN PARAMETER='NLS_CALENDAR' THEN VALUE END) AS NLS_CALENDAR,
MAX(CASE WHEN PARAMETER='NLS_COMP' THEN VALUE END) AS NLS_COMP,
MAX(CASE WHEN PARAMETER='NLS_LENGTH_SEMANTICS' THEN VALUE END) AS NLS_LENGTH_SEMANTICS,
MAX(CASE WHEN PARAMETER='NLS_NCHAR_CONV_EXCP' THEN VALUE END) AS NLS_NCHAR_CONV_EXCP,
MAX(CASE WHEN PARAMETER='NLS_DATE_LANGUAGE' THEN VALUE END) AS NLS_DATE_LANGUAGE,
MAX(CASE WHEN PARAMETER='NLS_SORT' THEN VALUE END) AS NLS_SORT,
MAX(CASE WHEN PARAMETER='NLS_CURRENCY' THEN VALUE END) AS NLS_CURRENCY,
MAX(CASE WHEN PARAMETER='NLS_DATE_FORMAT' THEN VALUE END) AS NLS_DATE_FORMAT,
MAX(CASE WHEN PARAMETER='NLS_ISO_CURRENCY' THEN VALUE END) AS NLS_ISO_CURRENCY,
MAX(CASE WHEN PARAMETER='NLS_NUMERIC_CHARACTERS' THEN VALUE END) AS NLS_NUMERIC_CHARACTERS,
MAX(CASE WHEN PARAMETER='NLS_DUAL_CURRENCY' THEN VALUE END) AS NLS_DUAL_CURRENCY,
MAX(CASE WHEN PARAMETER='NLS_TIMESTAMP_FORMAT' THEN VALUE END) AS NLS_TIMESTAMP_FORMAT,
MAX(CASE WHEN PARAMETER='NLS_TIMESTAMP_TZ_FORMAT' THEN VALUE END) AS NLS_TIMESTAMP_TZ_FORMAT
into :p_nls_calendar, :p_nls_comp, :p_nls_length_semantics, :p_nls_nchar_conv_excep,
:p_nls_date_lang, :p_nls_sort, :p_nls_currency, :p_nls_date_format, :p_nls_iso_currency,
:p_nls_numeric_chars, :p_nls_dual_currency, :p_nls_timestamp, :p_nls_timestamp_tz
FROM
sys.nls_session_parameters
;
END;`
stmt := NewStmt(cmdText, conn)
defer func(stmt *Stmt) {
_ = stmt.Close()
}(stmt)
_, err := stmt.Exec([]driver.Value{&conn.NLSData})
if err != nil {
return nil, err
}
//fmt.Println(stmt.Pars)
//if len(stmt.Pars) >= 10 {
// conn.NLSData.Calender = conn.sStrConv.Decode(stmt.Pars[0].BValue)
// conn.NLSData.Comp = conn.sStrConv.Decode(stmt.Pars[1].BValue)
// conn.NLSData.LengthSemantics = conn.sStrConv.Decode(stmt.Pars[2].BValue)
// conn.NLSData.NCharConvExcep = conn.sStrConv.Decode(stmt.Pars[3].BValue)
// conn.NLSData.DateLang = conn.sStrConv.Decode(stmt.Pars[4].BValue)
// conn.NLSData.Sort = conn.sStrConv.Decode(stmt.Pars[5].BValue)
// conn.NLSData.Currency = conn.sStrConv.Decode(stmt.Pars[6].BValue)
// conn.NLSData.DateFormat = conn.sStrConv.Decode(stmt.Pars[7].BValue)
// conn.NLSData.IsoCurrency = conn.sStrConv.Decode(stmt.Pars[8].BValue)
// conn.NLSData.NumericChars = conn.sStrConv.Decode(stmt.Pars[9].BValue)
// conn.NLSData.DualCurrency = conn.sStrConv.Decode(stmt.Pars[10].BValue)
// conn.NLSData.Timestamp = conn.sStrConv.Decode(stmt.Pars[11].BValue)
// conn.NLSData.TimestampTZ = conn.sStrConv.Decode(stmt.Pars[12].BValue)
//}
/*
for _, par := range stmt.Pars {
if par.Name == "p_nls_calendar" {
conn.NLSData.Calender = conn.strConv.Decode(par.BValue)
} else if par.Name == "p_nls_comp" {
conn.NLSData.Comp = conn.strConv.Decode(par.BValue)
} else if par.Name == "p_nls_length_semantics" {
conn.NLSData.LengthSemantics = conn.strConv.Decode(par.BValue)
} else if par.Name == "p_nls_nchar_conv_excep" {
conn.NLSData.NCharConvExcep = conn.strConv.Decode(par.BValue)
} else if par.Name == "p_nls_date_lang" {
conn.NLSData.DateLang = conn.strConv.Decode(par.BValue)
} else if par.Name == "p_nls_sort" {
conn.NLSData.Sort = conn.strConv.Decode(par.BValue)
} else if par.Name == "p_nls_currency" {
conn.NLSData.Currency = conn.strConv.Decode(par.BValue)
} else if par.Name == "p_nls_date_format" {
conn.NLSData.DateFormat = conn.strConv.Decode(par.BValue)
} else if par.Name == "p_nls_iso_currency" {
conn.NLSData.IsoCurrency = conn.strConv.Decode(par.BValue)
} else if par.Name == "p_nls_numeric_chars" {
conn.NLSData.NumericChars = conn.strConv.Decode(par.BValue)
} else if par.Name == "p_nls_dual_currency" {
conn.NLSData.DualCurrency = conn.strConv.Decode(par.BValue)
} else if par.Name == "p_nls_timestamp" {
conn.NLSData.Timestamp = conn.strConv.Decode(par.BValue)
} else if par.Name == "p_nls_timestamp_tz" {
conn.NLSData.TimestampTZ = conn.strConv.Decode(par.BValue)
}
}
*/
return &conn.NLSData, nil
}
// Prepare take a query string and create a stmt object
func (conn *Connection) Prepare(query string) (driver.Stmt, error) {
conn.tracer.Print("Prepare\n", query)
return NewStmt(query, conn), nil
}
// Ping test if connection is online
func (conn *Connection) Ping(ctx context.Context) error {
conn.tracer.Print("Ping")
conn.session.ResetBuffer()
conn.session.StartContext(ctx)
defer conn.session.EndContext()
return (&simpleObject{
connection: conn,
operationID: 0x93,
data: nil,
}).exec()
}
func (conn *Connection) getStrConv(charsetID int) (converters.IStringConverter, error) {
switch charsetID {
case conn.sStrConv.GetLangID():
if conn.cStrConv != nil {
return conn.cStrConv, nil
}
return conn.sStrConv, nil
case conn.nStrConv.GetLangID():
return conn.nStrConv, nil
default:
temp := converters.NewStringConverter(charsetID)
if temp == nil {
return temp, fmt.Errorf("server requested charset id: %d which is not supported by the driver", charsetID)
}
return temp, nil
}
}
//func (conn *Connection) encodeString(text string) []byte {
// oldLangID := 0
// if conn.connOption.CharsetID != 0 && conn.connOption.CharsetID != conn.strConv.GetLangID() {
// oldLangID = conn.strConv.SetLangID(conn.connOption.CharsetID)
// defer conn.strConv.SetLangID(oldLangID)
// }
// return conn.strConv.Encode(text)
//}
func (conn *Connection) Logoff() error {
conn.tracer.Print("Logoff")
session := conn.session
session.ResetBuffer()
//session.PutBytes(0x11, 0x87, 0, 0, 0, 0x2, 0x1, 0x11, 0x1, 0, 0, 0, 0x1, 0, 0, 0, 0, 0, 0x1, 0, 0, 0, 0, 0,
// 3, 9, 0)
session.PutBytes(3, 9, 0)
err := session.Write()
if err != nil {
return err
}
return conn.read()
//loop := true
//for loop {
// msg, err := session.GetByte()
// if err != nil {
// return err
// }
// err = conn.readMsg(msg)
// if err != nil {
// return err
// }
// if msg == 4 || msg == 9 {
// loop = false
// }
//}
//return nil
}
func (conn *Connection) read() error {
loop := true
session := conn.session
for loop {
msg, err := session.GetByte()
if err != nil {
return err
}
err = conn.readMsg(msg)
if err != nil {
return err
}
if msg == 4 || msg == 9 {
loop = false
}
}
return nil
}
// Open the connection = bring it online
func (conn *Connection) Open() error {
return conn.OpenWithContext(context.Background())
}
//func (conn *Connection) restore() error {
// tracer := conn.tracer
// failOver := conn.connOption.Failover
// var err error
// for trial := 0; trial < failOver; trial++ {
// tracer.Print("reconnect trial #", trial+1)
// err = conn.Open()
// if err != nil {
// tracer.Print("Error: ", err)
// continue
// }
// break
// }
// return err
//}
// OpenWithContext open the connection with timeout context
func (conn *Connection) OpenWithContext(ctx context.Context) error {
if len(conn.connOption.TraceDir) > 0 {
if err := os.MkdirAll(conn.connOption.TraceDir, os.ModePerm); err == nil {
now := time.Now()
traceFileName := fmt.Sprintf("%s/trace_%d_%02d_%02d_%02d_%02d_%02d_%d.log", conn.connOption.TraceDir,
now.Year(), now.Month(), now.Day(), now.Hour(), now.Minute(), now.Second(),
now.Nanosecond())
if tr, err := os.Create(traceFileName); err == nil {
conn.tracer = trace.NewTraceWriter(tr)
}
}
} else {
if len(conn.connOption.TraceFilePath) > 0 {
tf, err := os.Create(conn.connOption.TraceFilePath)
if err != nil {
//noinspection GoErrorStringFormat
return fmt.Errorf("Can't open trace file: %w", err)
}
conn.tracer = trace.NewTraceWriter(tf)
} else {
conn.tracer = trace.NilTracer()
}
}
tracer := conn.tracer
switch conn.connOption.DBAPrivilege {
case configurations.SYSDBA:
conn.LogonMode |= SysDba
case configurations.SYSOPER:
conn.LogonMode |= SysOper
default:
conn.LogonMode = 0
}
conn.connOption.ResetServerIndex()
conn.session = network.NewSession(conn.connOption, conn.tracer)
W := conn.connOption.Wallet
if conn.connOption.SSL && W != nil {
err := conn.session.LoadSSLData(W.Certificates, W.PrivateKeys, W.CertificateRequests)
if err != nil {
return err
}
}
session := conn.session
// start check for context
session.StartContext(ctx)
defer session.EndContext()
err := session.Connect(ctx)
if err != nil {
return err
}
// advanced negotiation
if session.Context.ACFL0&1 != 0 && session.Context.ACFL0&4 == 0 && session.Context.ACFL1&8 == 0 {
tracer.Print("Advance Negotiation")
ano, err := advanced_nego.NewAdvNego(session, conn.tracer, conn.connOption)
if err != nil {
return err
}
err = ano.Write()
if err != nil {
return err
}
err = ano.Read()
if err != nil {
return err
}
err = ano.StartServices()
if err != nil {
return err
}
}
err = conn.protocolNegotiation()
if err != nil {
return err
}
err = conn.dataTypeNegotiation()
if err != nil {
return err
}
err = conn.doAuth()
if errors.Is(err, network.ErrConnReset) {
err = conn.read()
}
if err != nil {
return err
}
conn.State = Opened
conn.dBVersion, err = GetDBVersion(conn.session)
if err != nil {
return err
}
conn.session.SetConnected()
tracer.Print("Connected")
tracer.Print("Database Version: ", conn.dBVersion.Text)
sessionID, err := strconv.ParseUint(conn.SessionProperties["AUTH_SESSION_ID"], 10, 32)
if err != nil {
return err
}
conn.sessionID = int(sessionID)
serialNum, err := strconv.ParseUint(conn.SessionProperties["AUTH_SERIAL_NUM"], 10, 32)
if err != nil {
return err
}
conn.serialID = int(serialNum)
conn.connOption.InstanceName = conn.SessionProperties["AUTH_SC_INSTANCE_NAME"]
//conn.connOption.Host = conn.SessionProperties["AUTH_SC_SERVER_HOST"]
conn.connOption.ServiceName = conn.SessionProperties["AUTH_SC_SERVICE_NAME"]
conn.connOption.DomainName = conn.SessionProperties["AUTH_SC_DB_DOMAIN"]
conn.connOption.DBName = conn.SessionProperties["AUTH_SC_DBUNIQUE_NAME"]
if len(conn.NLSData.Language) == 0 {
_, err = conn.GetNLS()
if err != nil {
return err
}
}
conn.getDBServerTimeZone()
return nil
}
func (conn *Connection) getDBServerTimeZone() {
var current time.Time
err := conn.QueryRowContext(context.Background(), "SELECT SYSTIMESTAMP FROM DUAL", nil).Scan(¤t)
if err != nil {
conn.dbServerTimeZone = time.UTC
}
conn.dbServerTimeZone = current.Location()
}
func (conn *Connection) getDBTimeZone() error {
var result string
err := conn.QueryRowContext(context.Background(), "SELECT DBTIMEZONE FROM DUAL", nil).Scan(&result)
//var current time.Time
//err := conn.QueryRowContext(context.Background(), "SELECT SYSTIMESTAMP FROM DUAL", nil).Scan(¤t)
if err != nil {
return err
}
var tzHours, tzMin int
_, err = fmt.Sscanf(result, "%03d:%02d", &tzHours, &tzMin)
if err != nil {
return err
}
conn.dbTimeZone = time.FixedZone(result, tzHours*60*60+tzMin*60)
return nil
}
// Begin a transaction
func (conn *Connection) Begin() (driver.Tx, error) {
conn.tracer.Print("Begin transaction")
conn.autoCommit = false
return &Transaction{conn: conn, ctx: context.Background()}, nil
}
func (conn *Connection) BeginTx(ctx context.Context, opts driver.TxOptions) (driver.Tx, error) {
if opts.ReadOnly {
return nil, errors.New("readonly transaction is not supported")
}
if opts.Isolation != 0 {
return nil, errors.New("only support default value for isolation")
}
conn.tracer.Print("Begin transaction with context")
conn.autoCommit = false
return &Transaction{conn: conn, ctx: ctx}, nil
}
// NewConnection create a new connection from databaseURL string or configuration
func NewConnection(databaseUrl string, config *configurations.ConnectionConfig) (*Connection, error) {
var err error
if len(databaseUrl) > 0 {
config, err = ParseConfig(databaseUrl)
if err != nil {
return nil, err
}
} else {
if config == nil {
return nil, errors.New("database url or configuration is required")
}
}
//conStr, err := newConnectionStringFromUrl(databaseUrl)
temp := new(configurations.ConnectionConfig)
*temp = *config
return &Connection{
State: Closed,
connOption: temp,
cStrConv: converters.NewStringConverter(config.CharsetID),
autoCommit: true,
cusTyp: map[string]customType{},
maxLen: struct {
varchar int
nvarchar int
raw int
number int
date int
timestamp int
}{varchar: 0x7FFF, nvarchar: 0x7FFF, raw: 0x7FFF, number: 0x16, date: 0xB, timestamp: 0xB},
}, nil
}
// Close the connection by disconnect network session
func (conn *Connection) Close() (err error) {
tracer := conn.tracer
tracer.Print("Close")
//var err error = nil
if conn.session != nil {
err = conn.Logoff()
if err != nil {
tracer.Print("Logoff with error: ", err)
}
err = conn.session.WriteFinalPacket()
if err != nil {
tracer.Print("Write Final Packet With Error: ", err)
}
conn.session.Disconnect()
conn.session = nil
}
conn.State = Closed
conn.tracer.Print("Connection Closed")
_ = conn.tracer.Close()
return
}
// doAuth a login step that occur during open connection
func (conn *Connection) doAuth() error {
conn.tracer.Print("doAuth")
if len(conn.connOption.UserID) > 0 && len(conn.connOption.Password) > 0 {
conn.session.ResetBuffer()
conn.session.PutBytes(3, 0x76, 0, 1)
conn.session.PutUint(len(conn.connOption.UserID), 4, true, true)
conn.LogonMode = conn.LogonMode | NoNewPass
conn.session.PutUint(int(conn.LogonMode), 4, true, true)
conn.session.PutBytes(1, 1, 5, 1, 1)
if len(conn.connOption.UserID) > 0 {
conn.session.PutString(conn.connOption.UserID)
}
conn.session.PutKeyValString("AUTH_TERMINAL", conn.connOption.ClientInfo.HostName, 0)
conn.session.PutKeyValString("AUTH_PROGRAM_NM", conn.connOption.ClientInfo.ProgramName, 0)
conn.session.PutKeyValString("AUTH_MACHINE", conn.connOption.ClientInfo.HostName, 0)
conn.session.PutKeyValString("AUTH_PID", fmt.Sprintf("%d", conn.connOption.ClientInfo.PID), 0)
conn.session.PutKeyValString("AUTH_SID", conn.connOption.ClientInfo.OSUserName, 0)
err := conn.session.Write()
if err != nil {
return err
}
conn.authObject, err = newAuthObject(conn.connOption.UserID, conn.connOption.Password, conn.tcpNego, conn)
if err != nil {
return err
}
} else {
conn.authObject = &AuthObject{
tcpNego: conn.tcpNego,
usePadding: false,
customHash: conn.tcpNego.ServerCompileTimeCaps[4]&32 != 0,
}
}
// if proxyAuth ==> mode |= PROXY
err := conn.authObject.Write(conn.connOption, conn.LogonMode, conn.session)
if err != nil {
return err
}
stop := false
for !stop {
msg, err := conn.session.GetByte()
if err != nil {
return err
}
switch msg {
case 8:
dictLen, err := conn.session.GetInt(2, true, true)
if err != nil {
return err
}
conn.SessionProperties = make(map[string]string, dictLen)
for x := 0; x < dictLen; x++ {
key, val, _, err := conn.session.GetKeyVal()
if err != nil {
return err
}
conn.SessionProperties[string(key)] = string(val)
}
//case 27:
// this.ProcessImplicitResultSet(ref implicitRSList);
// continue;
default:
err = conn.readMsg(msg)
if err != nil {
return err
}
if msg == 4 || msg == 9 {
stop = true
}
//return errors.New(fmt.Sprintf("message code error: received code %d", msg))
}
}
// if verifyResponse == true
// conn.authObject.VerifyResponse(conn.SessionProperties["AUTH_SVR_RESPONSE"])
return nil
}
// loadNLSData get nls data for v2
func (conn *Connection) loadNLSData() error {
_, err := conn.session.GetInt(2, true, true)
if err != nil {
return err
}
_, err = conn.session.GetByte()
if err != nil {
return err
}
length, err := conn.session.GetInt(4, true, true)
if err != nil {
return err
}
_, err = conn.session.GetByte()
if err != nil {
return err
}
for i := 0; i < length; i++ {
nlsKey, nlsVal, nlsCode, err := conn.session.GetKeyVal()
if err != nil {
return err
}
conn.NLSData.SaveNLSValue(string(nlsKey), string(nlsVal), nlsCode)
}
_, err = conn.session.GetInt(4, true, true)
return err
}
func (conn *Connection) getServerNetworkInformation(code uint8) error {
session := conn.session
if code == 0 {
_, err := session.GetByte()
return err
}
switch code - 1 {
case 1:
// receive OCOSPID
length, err := session.GetInt(2, true, true)
if err != nil {
return err
}
_, err = session.GetByte()
if err != nil {
return err
}
_, err = session.GetBytes(length)
if err != nil {
return err
}
case 3:
// receive OCSESSRET session return values
_, err := session.GetInt(2, true, true)
if err != nil {
return err
}
_, err = session.GetByte()
if err != nil {
return err
}
length, err := session.GetInt(2, true, true)
if err != nil {
return err
}
// get nls data
for i := 0; i < length; i++ {
nlsKey, nlsVal, nlsCode, err := session.GetKeyVal()
if err != nil {
return err
}
conn.NLSData.SaveNLSValue(string(nlsKey), string(nlsVal), nlsCode)
}
flag, err := session.GetInt(4, true, true)
if err != nil {
return err
}
sessionID, err := session.GetInt(4, true, true)
if err != nil {
return err
}
serialID, err := session.GetInt(2, true, true)
if err != nil {
return err
}
if flag&4 == 4 {
conn.sessionID = sessionID
conn.serialID = serialID
// save session id and serial number to connection
}
case 4:
err := conn.loadNLSData()
if err != nil {
return err
}
case 6:
length, err := session.GetInt(4, true, true)
if err != nil {
return err
}
conn.transactionID, err = session.GetClr()
if len(conn.transactionID) > length {
conn.transactionID = conn.transactionID[:length]
}
case 7:
_, err := session.GetInt(2, true, true)
if err != nil {
return err
}
_, err = session.GetByte()
if err != nil {
return err
}
_, err = session.GetInt(4, true, true)
if err != nil {
return err
}
_, err = session.GetInt(4, true, true)
if err != nil {
return err
}
_, err = session.GetByte()
if err != nil {
return err
}
_, err = session.GetDlc()
if err != nil {
return err
}
case 8:
_, err := session.GetInt(2, true, true)
if err != nil {
return err
}
_, err = session.GetByte()
if err != nil {
return err
}
}
return nil
}
// SaveNLSValue a helper function that convert between nls key and code
func (nls *NLSData) SaveNLSValue(key, value string, code int) {
key = strings.ToUpper(key)
if len(key) > 0 {
switch key {
case "AUTH_NLS_LXCCURRENCY":
code = 0
case "AUTH_NLS_LXCISOCURR":
code = 1
case "AUTH_NLS_LXCNUMERICS":
code = 2
case "AUTH_NLS_LXCDATEFM":
code = 7
case "AUTH_NLS_LXCDATELANG":
code = 8
case "AUTH_NLS_LXCTERRITORY":
code = 9
case "SESSION_NLS_LXCCHARSET":
code = 10
case "AUTH_NLS_LXCSORT":
code = 11
case "AUTH_NLS_LXCCALENDAR":
code = 12
case "AUTH_NLS_LXLAN":
code = 16
case "AL8KW_NLSCOMP":
code = 50
case "AUTH_NLS_LXCUNIONCUR":
code = 52
case "AUTH_NLS_LXCTIMEFM":
code = 57
case "AUTH_NLS_LXCSTMPFM":
code = 58
case "AUTH_NLS_LXCTTZNFM":
code = 59
case "AUTH_NLS_LXCSTZNFM":
code = 60
case "SESSION_NLS_LXCNLSLENSEM":
code = 61
case "SESSION_NLS_LXCNCHAREXCP":
code = 62
case "SESSION_NLS_LXCNCHARIMP":
code = 63
}
}
switch code {
case 0:
nls.Currency = value
case 1:
nls.IsoCurrency = value
case 2:
nls.NumericChars = value
case 7:
nls.DateFormat = value
case 8:
nls.DateLang = value
case 9:
nls.Territory = value
case 10:
nls.Charset = value
case 11:
nls.Sort = value
case 12:
nls.Calender = value
case 16:
nls.Language = value
case 50:
nls.Comp = value
case 52:
nls.UnionCurrency = value
case 57:
nls.TimeFormat = value
case 58:
nls.Timestamp = value
case 59:
nls.TTimezoneFormat = value
case 60:
nls.NTimezoneFormat = value
case 61:
nls.LengthSemantics = value
case 62:
nls.NCharConvExcep = value
case 63:
nls.NCharConvImp = value
}
}
func (conn *Connection) Exec(text string, args ...driver.Value) (driver.Result, error) {
stmt := NewStmt(text, conn)
defer func() {
_ = stmt.Close()
}()
return stmt.Exec(args)
}
func SetNTSAuth(newNTSManager advanced_nego.NTSAuthInterface) {
advanced_nego.NTSAuth = newNTSManager
}
// StructsInsert support interface{} array
func (conn *Connection) StructsInsert(sqlText string, values []interface{}) (*QueryResult, error) {
if len(values) == 0 {
return nil, nil
}
rgx := regexp.MustCompile(`\((.*?)\)`)
matchArray := rgx.FindStringSubmatch(sqlText)
if len(matchArray) < 2 {
return nil, fmt.Errorf("invalid sql must be like: insert into a (name,age) values (:1,:2)")
}
fields := strings.Split(matchArray[1], ",")
fieldsMap := make(map[string]int)
for i, field := range fields {
fieldsMap[strings.TrimSpace(strings.ToLower(field))] = i
}
_type := reflect.TypeOf(values[0])
result := make([][]driver.Value, _type.NumField())
idx := 0
for i := 0; i < _type.NumField(); i++ {
db := _type.Field(i).Tag.Get("db")
db = strings.TrimSpace(strings.ToLower(db))
if db != "" {
if _, ok := fieldsMap[db]; ok {
f := make([]driver.Value, len(values))
result[idx] = f
idx++
}
}
}
if idx != len(fieldsMap) {
return nil, &network.OracleError{ErrCode: 947, ErrMsg: "ORA-00947: Not enough values"}
}
for i, item := range values {
_value := reflect.ValueOf(item)
for j := 0; j < _type.NumField(); j++ {
db := _type.Field(j).Tag.Get("db")
if db != "" {
if v, ok := fieldsMap[strings.ToLower(db)]; ok {
if !_value.Field(j).IsValid() {
result[v][i] = nil
} else {
result[v][i] = _value.Field(j).Interface()
}
}
}
}
}
return conn.BulkInsert(sqlText, len(values), result...)
}
// BulkInsert mass insert column values into a table
// all columns should pass as an array of values
func (conn *Connection) BulkInsert(sqlText string, rowNum int, columns ...[]driver.Value) (*QueryResult, error) {
if conn.State != Opened {
return nil, &network.OracleError{ErrCode: 6413, ErrMsg: "ORA-06413: Connection not open"}
}
if rowNum == 0 {
return nil, nil
}
stmt := NewStmt(sqlText, conn)
stmt.arrayBindCount = rowNum
defer func() {
_ = stmt.Close()
}()
tracer := conn.tracer
tracer.Printf("BulkInsert:\n%s", stmt.text)
tracer.Printf("Row Num: %d", rowNum)
tracer.Printf("Column Num: %d", len(columns))
for idx, col := range columns {
if len(col) < rowNum {
return nil, fmt.Errorf("size of column no. %d is less than rowNum", idx)
}
par, err := stmt.NewParam("", col[0], 0, Input)
if err != nil {
return nil, err
}
maxLen := par.MaxLen
maxCharLen := par.MaxCharLen
dataType := par.DataType