/
rset.go
1047 lines (982 loc) · 25.3 KB
/
rset.go
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// Copyright 2017 The Ora Authors. All rights reserved.
// Use of this source code is governed by The MIT License
// found in the accompanying LICENSE file.
package ora
/*
#include <oci.h>
*/
import "C"
import (
"container/list"
"fmt"
"io"
"sync"
"sync/atomic"
"unsafe"
)
const (
MaxFetchLen = 1024
DefaultFetchLen = 128
DefaultLOBFetchLen = 8
byteWidth64 = 8
byteWidth32 = 4
byteWidth16 = 2
byteWidth8 = 1
)
// LogRsetCfg represents Rset logging configuration values.
type LogRsetCfg struct {
// Close determines whether the Rset.close method is logged.
//
// The default is true.
Close bool
// BeginRow determines whether the Rset.beginRow method is logged.
//
// The default is false.
BeginRow bool
// EndRow determines whether the Rset.endRow method is logged.
//
// The default is false.
EndRow bool
// Next determines whether the Rset.Next method is logged.
//
// The default is false.
Next bool
// Open determines whether the Rset.open method is logged.
//
// The default is true.
Open bool
// OpenDefs determines whether Select-list definitions with the Rset.open method are logged.
//
// The default is true.
OpenDefs bool
}
// NewLogTxCfg creates a LogRsetCfg with default values.
func NewLogRsetCfg() LogRsetCfg {
c := LogRsetCfg{}
c.Close = true
c.BeginRow = false
c.EndRow = false
c.Next = false
c.Open = true
c.OpenDefs = true
return c
}
// Rset represents a result set used to obtain Go values from a SQL select statement.
//
// Opening and closing a Rset is managed internally. Rset doesn't have an Open
// method or Close method.
type Rset struct {
sync.RWMutex
id uint64
// cached
env *Env
stmt *Stmt
ocistmt *C.OCIStmt
defs []def
autoClose bool // whether the close of the rset shall close its parent stmt
genByPool bool
Row []interface{}
Columns []Column
index int32
err error
fetched, offset int64
fetchLen int
finished bool
sysNamer
}
type Column struct {
Name string
Type C.ub2
Length uint32
Precision C.sb2
Scale C.sb1
}
// Err returns the last error of the reesult set.
func (rset *Rset) Err() error {
rset.RLock()
err := rset.err
rset.RUnlock()
return err
}
// Len returns the number of rows retrieved.
func (rset *Rset) Len() int {
return int(atomic.LoadInt32(&rset.index)) + 1
}
// checkIsOpen validates that the result set is open.
func (rset *Rset) checkIsOpen() error {
if !rset.IsOpen() {
return er("Rset is closed.")
}
return nil
}
// IsOpen returns true when a result set is open; otherwise, false.
func (rset *Rset) IsOpen() bool {
if rset == nil {
return false
}
rset.RLock()
defer rset.RUnlock()
return rset.stmt != nil && rset.ocistmt != nil && rset.env != nil
}
// ColumnIndex returns a map of column names to their respective indexes.
// Duplicate column names are not treated specially, the biggest index returned
// for each column name.
func (rset *Rset) ColumnIndex() map[string]int {
if rset == nil {
return nil
}
rset.RLock()
defer rset.RUnlock()
if rset.Columns == nil || len(rset.Columns) == 0 {
return nil
}
index := make(map[string]int, len(rset.Columns))
for i, c := range rset.Columns {
index[c.Name] = i
}
return index
}
// closeWithRemove releases allocated resources and removes the Rset from the
// Stmt.openRsets list.
func (rset *Rset) closeWithRemove() (err error) {
rset.RLock()
rset.stmt.openRsets.remove(rset)
rset.RUnlock()
return rset.close()
}
// close releases allocated resources.
func (rset *Rset) close() (err error) {
rset.log(_drv.Cfg().Log.Rset.Close)
defer func() {
if value := recover(); value != nil {
err = errR(value)
}
if rset.genByPool { // recycle pool-generated Rset; don't recycle user-specfied Rset
*rset = Rset{}
_drv.rsetPool.Put(rset)
}
}()
if err := rset.checkIsOpen(); err != nil {
return er("Rset is closed.")
}
rset.Lock()
defer rset.Unlock()
errs := _drv.listPool.Get().(*list.List)
// close defines
for _, def := range rset.defs {
if def == nil {
continue
}
err0 := def.close()
if err0 != nil {
errs.PushBack(err0)
}
}
rset.env = nil
rset.stmt = nil
rset.ocistmt = nil
rset.defs = nil
rset.Row = nil
rset.Columns = nil
// do not clear error in case of autoClose when error exists
// clear error when rset in initialized
//rset.err = nil
m := newMultiErrL(errs)
if m != nil {
err = *m
}
errs.Init()
_drv.listPool.Put(errs)
return err
}
// 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.Lock()
defer rset.Unlock()
fetched, offset, finished := rset.fetched, rset.offset, rset.finished
ocistmt := rset.ocistmt
rset.logF(_drv.Cfg().Log.Rset.BeginRow, "fetched=%d offset=%d finished=%t", fetched, offset, finished)
if fetched > 0 && fetched > offset {
atomic.AddInt32(&rset.index, 1)
return nil
}
if finished {
rset.log(_drv.Cfg().Log.Rset.BeginRow, "finished")
return io.EOF
}
// check is open
if ocistmt == nil {
rset.log(_drv.Cfg().Log.Rset.BeginRow, "Rset is closed")
return io.EOF
}
// allocate define descriptor handles
if rset.env == nil {
return errF("Rset env is closed")
}
env := rset.env
for _, define := range rset.defs {
//rset.logF(_drv.Cfg().Log.Rset.BeginRow, "defs[%d]=%#v", i, define)
if define == nil {
continue
}
err := define.alloc()
if err != nil {
return err
}
}
rset.finished = false
// fetch rset.fetchLen rows
r := C.OCIStmtFetch2(
rset.ocistmt, //OCIStmt *stmthp,
env.ocierr, //OCIError *errhp,
C.ub4(rset.fetchLen), //ub4 nrows,
C.OCI_FETCH_NEXT, //ub2 orientation,
C.sb4(0), //sb4 fetchOffset,
C.OCI_DEFAULT) //ub4 mode );
if r == C.OCI_ERROR {
err := env.ociError()
return err
} else if r == C.OCI_NO_DATA {
rset.log(_drv.Cfg().Log.Rset.BeginRow, "OCI_NO_DATA")
rset.finished = true
fetchLen := rset.fetchLen
if fetchLen == 1 {
// return io.EOF to conform with database/sql/driver
return io.EOF
}
// If OCIStmtFetch2 returns OCI_NO_DATA this does not mean that no data fetched,
// this means that the number of fetched rows is less than the array size,
// they are all fetched by this OCIStmtFetch2 call, and you do not need to
// call OCIStmtFetch2 anymore.
//
}
var rowsFetched C.ub4
if err := rset.attr(unsafe.Pointer(&rowsFetched), 4, C.OCI_ATTR_ROWS_FETCHED); err != nil {
return err
}
rset.fetched = int64(rowsFetched)
rset.offset = 0
err = nil
if rset.fetched == 0 {
rset.finished = true
err = io.EOF
} else {
atomic.AddInt32(&rset.index, 1)
}
return err
}
// endRow deallocates a handle for each column.
func (rset *Rset) endRow() {
rset.log(_drv.Cfg().Log.Rset.EndRow)
rset.Lock()
defer rset.Unlock()
done := rset.finished && !(rset.fetched > 0 && rset.fetched > rset.offset)
defs := rset.defs
rset.offset++
if !done {
return
}
for _, define := range defs {
if define != nil {
define.free()
}
}
}
// Exhaust will cycle to the end of the Rset, to autoclose it.
func (rset *Rset) Exhaust() {
if rset == nil {
return
}
if !rset.IsOpen() {
return
}
for {
err := rset.beginRow()
rset.endRow()
if err != nil {
return
}
}
}
// Next attempts to load a row of data from an Oracle buffer. True is returned
// when a row of data is retrieved. False is returned when no data is available.
//
// Retrieve the loaded row from the Rset.Row field. Rset.Row is updated
// on each call to Next. Rset.Row is set to nil when Next returns false.
//
// When Next returns false check Rset.Err() for any error that may have occured.
func (rset *Rset) Next() bool {
rset.log(_drv.Cfg().Log.Rset.Next)
erase := func(err error) {
rset.Lock()
rset.err = err
rset.Row = nil
autoClose := rset.autoClose
rset.Unlock()
// closing the Stmt will close this (and all) Rsets under it!
if !autoClose {
rset.close()
} else {
rset.RLock()
stmt := rset.stmt
rset.RUnlock()
rset.closeWithRemove()
stmt.Close()
}
}
if err := rset.checkIsOpen(); err != nil {
erase(err)
return false
}
err := rset.beginRow()
defer rset.endRow()
rset.logF(_drv.Cfg().Log.Rset.Next, "beginRow=%v", err)
if err != nil {
// io.EOF means no more data; return nil err
if err == io.EOF {
err = nil
}
erase(err)
return false
}
// populate column values
rset.RLock()
Row := rset.Row
defs := rset.defs
offset := rset.offset
rset.RUnlock()
for n, define := range defs {
value, err := define.value(int(offset))
//rset.logF(_drv.Cfg().Log.Rset.Next, "value[%d]=%v (%v)", n, value, err)
if err != nil {
erase(err)
return false
}
Row[n] = value
}
rset.Lock()
rset.defs = defs
rset.Row = Row
rset.Unlock()
//rset.logF(_drv.Cfg().Log.Rset.Next, "Row=%#v", rset.Row)
return true
}
// NextRow attempts to load a row from the Oracle buffer and return the row.
// Nil is returned when there's no data.
//
// When NextRow returns nil check Rset.Err() for any error that may have occured.
func (rset *Rset) NextRow() []interface{} {
rset.Next()
rset.RLock()
defer rset.RUnlock()
return rset.Row
}
// gets a define struct from a driver slice
func (rset *Rset) getDef(idx int) interface{} {
return _drv.defPools[idx].Get()
}
// puts a bind struct in the driver slice
func (rset *Rset) putDef(idx int, def def) {
_drv.defPools[idx].Put(def)
}
// Open defines select-list columns.
func (rset *Rset) open(stmt *Stmt, ocistmt *C.OCIStmt) error {
logCfg := _drv.Cfg().Log
rset.Lock()
defer rset.Unlock()
env := rset.env
if env == nil {
rset.log(logCfg.Rset.Open, "env is nil")
return io.EOF
}
rset.stmt = stmt
rset.ocistmt = ocistmt
atomic.StoreInt32(&rset.index, -1)
rset.offset = 0
rset.fetched = 0
rset.finished = false
rset.err = nil
defs, Columns, Row := rset.defs, rset.Columns, rset.Row
rset.defs, rset.Columns, rset.Row = nil, nil, nil
stmt.RLock()
ses := stmt.ses
stmt.RUnlock()
rset.log(logCfg.Rset.Open) // call log after rset.stmt is set
// get the implcit select-list describe information; no server round-trip
//fmt.Fprintf(os.Stdout, "stmt=%#v rset=%#v\n", stmt, rset)
r := C.OCIStmtExecute(
ses.ocisvcctx, //OCISvcCtx *svchp,
ocistmt, //OCIStmt *stmtp,
env.ocierr, //OCIError *errhp,
C.ub4(1), //ub4 iters,
C.ub4(0), //ub4 rowoff,
nil, //const OCISnapshot *snap_in,
nil, //OCISnapshot *snap_out,
C.OCI_DESCRIBE_ONLY) //ub4 mode );
if r == C.OCI_ERROR {
return env.ociError()
}
// get the parameter count
var paramCount C.ub4
err := rset.attr(unsafe.Pointer(¶mCount), 4, C.OCI_ATTR_PARAM_COUNT)
if err != nil {
return err
}
// make defines slice
if cap(defs) < int(paramCount) {
defs = make([]def, int(paramCount))
} else {
defs = defs[:int(paramCount)]
}
if cap(Columns) < len(defs) {
Columns = make([]Column, len(defs))
} else {
Columns = Columns[:len(defs)]
}
if cap(Row) < len(defs) {
Row = make([]interface{}, len(defs))
} else {
Row = Row[:len(Row)]
}
//fmt.Printf("rset.open (paramCount %v)\n", paramCount)
// create parameters for each select-list column
type paramS struct {
columnSize uint32
typeCode C.ub2
param *C.OCIParam
}
params := make([]paramS, len(defs))
defer func() {
for _, param := range params {
if param.param == nil {
continue
}
C.OCIDescriptorFree(unsafe.Pointer(param.param), C.OCI_DTYPE_PARAM)
}
}()
var gct GoColumnType
for n := range defs {
// Create oci parameter handle; may be freed by OCIDescriptorFree()
// parameter position is 1-based
r := C.OCIParamGet(
unsafe.Pointer(rset.ocistmt), //const void *hndlp,
C.OCI_HTYPE_STMT, //ub4 htype,
env.ocierr, //OCIError *errhp,
(*unsafe.Pointer)(unsafe.Pointer(¶ms[n].param)), //void **parmdpp,
C.ub4(n+1)) //ub4 pos );
if r == C.OCI_ERROR {
return env.ociError()
}
ocipar := params[n].param
// Get column size in bytes
err = rset.paramAttr(ocipar, unsafe.Pointer(¶ms[n].columnSize), nil, C.OCI_ATTR_DATA_SIZE)
if err != nil {
return err
}
// Get oci data type code
err = rset.paramAttr(ocipar, unsafe.Pointer(¶ms[n].typeCode), nil, C.OCI_ATTR_DATA_TYPE)
if err != nil {
return err
}
// Get column name
var columnName *C.char
var colSize C.ub4
err := rset.paramAttr(ocipar, unsafe.Pointer(&columnName), &colSize, C.OCI_ATTR_NAME)
if err != nil {
return err
}
Columns[n] = Column{
Name: C.GoStringN(columnName, C.int(colSize)),
Type: params[n].typeCode,
Length: params[n].columnSize,
}
rset.logF(logCfg.Rset.OpenDefs, "%d. %s/%d", n+1, Columns[n].Name, params[n].typeCode)
}
fetchLen, lobFetchLen := DefaultFetchLen, DefaultLOBFetchLen
cfg := rset.stmt.Cfg()
if cfg.fetchLen > 0 {
fetchLen = cfg.fetchLen
}
if cfg.lobFetchLen > 0 {
lobFetchLen = cfg.lobFetchLen
}
if fetchLen != lobFetchLen {
Loop:
for _, param := range params {
switch param.typeCode {
// These can consume a lot of memory.
case C.SQLT_LNG, C.SQLT_BFILE, C.SQLT_BLOB, C.SQLT_CLOB, C.SQLT_LBI:
fetchLen = lobFetchLen
break Loop
}
}
}
//rset.logF(true, "fetchLen=%d", fetchLen)
rset.defs, rset.Columns, rset.Row = defs, Columns, Row
rset.fetchLen = fetchLen
//rset.logF(logCfg.Rset.Open, "cfg=%#v", cfg)
stmt.RLock()
gcts := stmt.gcts
stmt.RUnlock()
for n := range defs {
ocipar := params[n].param
ociTypeCode := params[n].typeCode
columnSize := params[n].columnSize
switch ociTypeCode {
case C.SQLT_NUM, C.SQLT_INT: // TimesTen may return an SQLT_INT
// NUMBER
// Get precision
var precision C.sb2
err = rset.paramAttr(ocipar, unsafe.Pointer(&precision), nil, C.OCI_ATTR_PRECISION)
if err != nil {
return err
}
// Get scale (the number of decimal places)
var scale C.sb1
err = rset.paramAttr(ocipar, unsafe.Pointer(&scale), nil, C.OCI_ATTR_SCALE)
if err != nil {
return err
}
rset.Columns[n].Precision = precision
rset.Columns[n].Scale = scale
if gcts == nil || n >= len(gcts) || gcts[n] == D {
gct = cfg.numericColumnType(int(precision), int(scale))
} else {
err = checkNumericColumn(gcts[n], rset.Columns[n].Name)
if err != nil {
return err
}
gct = gcts[n]
}
rset.logF(logCfg.Rset.OpenDefs, "%d. prec=%d scale=%d => gct=%s", n+1, precision, scale, GctName(gct))
defs[n], err = rset.defineNumeric(n, gct)
if err != nil {
return err
}
case C.SQLT_IBDOUBLE:
// BINARY_DOUBLE
if gcts == nil || n >= len(gcts) || gcts[n] == D {
gct = cfg.binaryDouble
} else {
err = checkNumericColumn(gcts[n], rset.Columns[n].Name)
if err != nil {
return err
}
gct = gcts[n]
}
defs[n], err = rset.defineNumeric(n, gct)
if err != nil {
return err
}
case C.SQLT_IBFLOAT:
// BINARY_FLOAT
if gcts == nil || n >= len(gcts) || gcts[n] == D {
gct = cfg.binaryFloat
} else {
err = checkNumericColumn(gcts[n], rset.Columns[n].Name)
if err != nil {
return err
}
gct = gcts[n]
}
defs[n], err = rset.defineNumeric(n, gct)
if err != nil {
return err
}
case C.SQLT_DAT:
// DATE
if gcts == nil || n >= len(gcts) || gcts[n] == D {
gct = cfg.date
} else {
err = checkTimeColumn(gcts[n])
if err != nil {
return err
}
gct = gcts[n]
}
isNullable := false
if gct == OraT {
isNullable = true
}
def := rset.getDef(defIdxDate).(*defDate)
defs[n] = def
err = def.define(n+1, isNullable, rset)
if err != nil {
return err
}
case C.SQLT_TIMESTAMP, C.SQLT_TIMESTAMP_TZ, C.SQLT_TIMESTAMP_LTZ:
// TIMESTAMP, TIMESTAMP WITH TIME ZONE, TIMESTAMP WITH LOCAL TIMEZONE
if gcts == nil || n >= len(gcts) || gcts[n] == D {
switch ociTypeCode {
case C.SQLT_TIMESTAMP:
gct = cfg.timestamp
case C.SQLT_TIMESTAMP_TZ:
gct = cfg.timestampTz
case C.SQLT_TIMESTAMP_LTZ:
gct = cfg.timestampLtz
}
} else {
err = checkTimeColumn(gcts[n])
if err != nil {
return err
}
gct = gcts[n]
}
isNullable := false
if gct == OraT {
isNullable = true
}
def := rset.getDef(defIdxTime).(*defTime)
defs[n] = def
err = def.define(n+1, isNullable, rset)
if err != nil {
return err
}
case C.SQLT_CHR:
// VARCHAR, VARCHAR2, NVARCHAR2
if gcts == nil || n >= len(gcts) || gcts[n] == D {
gct = cfg.varchar
} else {
err = checkStringColumn(gcts[n])
if err != nil {
return err
}
gct = gcts[n]
}
defs[n], err = rset.defineString(n, columnSize, gct, false)
if err != nil {
return err
}
case C.SQLT_AFC:
// CHAR, NCHAR
rset.logF(logCfg.Rset.OpenDefs, "%d. AFC size=%d", n+1, columnSize)
//Log.Infof("rset AFC size=%d gct=%v", columnSize, gct)
// for char(1 char) columns, columnSize is 4 (AL32UTF8 charset)
if columnSize == 1 || columnSize == 4 {
if gcts == nil || n >= len(gcts) || gcts[n] == D {
gct = cfg.char1
rset.logF(logCfg.Rset.OpenDefs, "%d. AFC no gct, char1=%s", n+1, gct)
} else {
err = checkBoolOrStringColumn(gcts[n])
if err != nil {
return err
}
gct = gcts[n]
}
rset.logF(logCfg.Rset.OpenDefs, "%d. AFC gct=%s", n+1, gct)
switch gct {
case B, OraB:
// Interpret single char as bool
isNullable := false
if gct == OraB {
isNullable = true
}
def := rset.getDef(defIdxBool).(*defBool)
defs[n] = def
err = def.define(n+1, int(columnSize), isNullable, rset)
if err != nil {
return err
}
case S, OraS:
// Interpret single char as string
defs[n], err = rset.defineString(n, columnSize, gct, true)
if err != nil {
return err
}
}
} else {
// Interpret as string
if gcts == nil || n >= len(gcts) || gcts[n] == D {
gct = cfg.char
} else {
err = checkStringColumn(gcts[n])
if err != nil {
return err
}
gct = gcts[n]
}
defs[n], err = rset.defineString(n, columnSize, gct, true)
if err != nil {
return err
}
}
case C.SQLT_LNG:
// LONG
if gcts == nil || n >= len(gcts) || gcts[n] == D {
gct = cfg.long
} else {
err = checkStringColumn(gcts[n])
if err != nil {
return err
}
gct = gcts[n]
}
// longBufferSize: Use a moderate default buffer size; 2GB max buffer may not be feasible on all clients
defs[n], err = rset.defineString(n, stmt.Cfg().longBufferSize, gct, false)
if err != nil {
return err
}
case C.SQLT_CLOB:
// CLOB, NCLOB
if gcts == nil || n >= len(gcts) || gcts[n] == D {
gct = cfg.clob
} else if gcts[n] == L {
gct = L
} else {
err = checkStringColumn(gcts[n])
if err != nil {
return err
}
gct = gcts[n]
}
def := rset.getDef(defIdxLob).(*defLob)
defs[n] = def
err = def.define(n+1, C.SQLT_CLOB, gct, rset)
if err != nil {
return err
}
case C.SQLT_BLOB:
// BLOB
if gcts == nil || n >= len(gcts) || gcts[n] == D {
gct = cfg.blob
} else if gcts[n] == L {
gct = L
} else {
err = checkBinColumn(gcts[n])
if err != nil {
return err
}
gct = gcts[n]
}
def := rset.getDef(defIdxLob).(*defLob)
defs[n] = def
err = def.define(n+1, C.SQLT_BLOB, gct, rset)
if err != nil {
return err
}
case C.SQLT_BIN:
// RAW
if gcts == nil || n >= len(gcts) || gcts[n] == D {
gct = cfg.raw
} else {
err = checkBinColumn(gcts[n])
if err != nil {
return err
}
gct = gcts[n]
}
isNullable := false
if gct == OraBin {
isNullable = true
}
def := rset.getDef(defIdxRaw).(*defRaw)
defs[n] = def
err = def.define(n+1, int(columnSize), isNullable, rset)
if err != nil {
return err
}
case C.SQLT_LBI:
//log(true, "LONG RAW")
// LONG RAW
if gcts == nil || n >= len(gcts) || gcts[n] == D {
gct = cfg.longRaw
} else {
err = checkBinColumn(gcts[n])
if err != nil {
return err
}
gct = gcts[n]
}
isNullable := false
if gct == OraBin {
isNullable = true
}
def := rset.getDef(defIdxLongRaw).(*defLongRaw)
defs[n] = def
err = def.define(n+1, cfg.longRawBufferSize, isNullable, rset)
if err != nil {
return err
}
case C.SQLT_INTERVAL_YM:
def := rset.getDef(defIdxIntervalYM).(*defIntervalYM)
defs[n] = def
err = def.define(n+1, rset)
if err != nil {
return err
}
case C.SQLT_INTERVAL_DS:
def := rset.getDef(defIdxIntervalDS).(*defIntervalDS)
defs[n] = def
err = def.define(n+1, rset)
if err != nil {
return err
}
case C.SQLT_FILE:
// BFILE
def := rset.getDef(defIdxBfile).(*defBfile)
defs[n] = def
err = def.define(n+1, rset)
if err != nil {
return err
}
case C.SQLT_RDD:
// ROWID, UROWID
def := rset.getDef(defIdxRowid).(*defRowid)
defs[n] = def
err = def.define(n+1, rset)
if err != nil {
return err
}
case C.SQLT_RSET:
def := rset.getDef(defIdxRset).(*defRset)
defs[n] = def
err = def.define(n+1, rset)
if err != nil {
return err
}
default:
return errF("unsupported select-list column type (ociTypeCode: %v)", ociTypeCode)
}
}
return nil
}
func (rset *Rset) defineString(n int, columnSize uint32, gct GoColumnType, rTrim bool) (def, error) {
isNullable := false
if gct == OraS {
isNullable = true
}
rTrim = rTrim && rset.stmt.Cfg().RTrimChar
D := rset.getDef(defIdxString).(*defString)
return D, D.define(n+1, int(columnSize), isNullable, rTrim, rset)
}
func (rset *Rset) defineNumeric(n int, gct GoColumnType) (def, error) {
var nullable bool
var D def
switch gct {
case I64:
D = rset.getDef(defIdxInt64).(*defInt64)
case I32:
D = rset.getDef(defIdxInt32).(*defInt32)
case I16:
D = rset.getDef(defIdxInt16).(*defInt16)
case I8:
D = rset.getDef(defIdxInt8).(*defInt8)
case U64:
D = rset.getDef(defIdxUint64).(*defUint64)
case U32:
D = rset.getDef(defIdxUint32).(*defUint32)
case U16:
D = rset.getDef(defIdxUint16).(*defUint16)
case U8:
D = rset.getDef(defIdxUint8).(*defUint8)
case F64:
D = rset.getDef(defIdxFloat64).(*defFloat64)
case F32:
D = rset.getDef(defIdxFloat32).(*defFloat32)
case N:
D = rset.getDef(defIdxOCINum).(*defOCINum)
case OraI64:
D = rset.getDef(defIdxInt64).(*defInt64)
nullable = true
case OraI32:
D = rset.getDef(defIdxInt32).(*defInt32)
nullable = true
case OraI16:
D = rset.getDef(defIdxInt16).(*defInt16)
nullable = true
case OraI8:
D = rset.getDef(defIdxInt8).(*defInt8)
nullable = true
case OraU64:
D = rset.getDef(defIdxUint64).(*defUint64)
nullable = true
case OraU32:
D = rset.getDef(defIdxUint32).(*defUint32)
nullable = true
case OraU16:
D = rset.getDef(defIdxUint16).(*defUint16)
nullable = true
case OraU8:
D = rset.getDef(defIdxUint8).(*defUint8)
nullable = true
case OraF64:
D = rset.getDef(defIdxFloat64).(*defFloat64)
nullable = true
case OraF32:
D = rset.getDef(defIdxFloat32).(*defFloat32)
nullable = true
case OraN:
D = rset.getDef(defIdxOCINum).(*defOCINum)
nullable = true
case S:
D = rset.getDef(defIdxNumString).(*defNumString)
}
return D, D.(interface {
define(int, bool, *Rset) error
}).define(n+1, nullable, rset)
}
// paramAttr gets an attribute from the parameter handle.
func (rset *Rset) paramAttr(ocipar *C.OCIParam, attrup unsafe.Pointer, attrSizep *C.ub4, attrType C.ub4) error {
if attrSizep == nil {
attrSizep = new(C.ub4)
}
env := rset.env
r := C.OCIAttrGet(
unsafe.Pointer(ocipar), //const void *trgthndlp,
C.OCI_DTYPE_PARAM, //ub4 trghndltyp,
attrup, //void *attributep,
attrSizep, //ub4 *sizep,
attrType, //ub4 attrtype,
env.ocierr) //OCIError *errhp );
if r == C.OCI_ERROR {
return env.ociError()
}
return nil
}
// attr gets an attribute from the statement handle.
func (rset *Rset) attr(attrup unsafe.Pointer, attrSize C.ub4, attrType C.ub4) error {