示例#1
0
文件: oci8.go 项目: mattn/go-oci8
// ColumnTypeScanType implement RowsColumnTypeScanType.
func (rc *OCI8Rows) ColumnTypeScanType(i int) reflect.Type {
	var p unsafe.Pointer
	var tp C.ub2

	tpr := C.WrapOCIAttrGetUb2(p, C.OCI_DTYPE_PARAM, C.OCI_ATTR_DATA_TYPE, (*C.OCIError)(rc.s.c.err))
	if tpr.rv == C.OCI_SUCCESS {
		tp = tpr.num
	}

	switch tp {
	case C.SQLT_CHR, C.SQLT_AFC, C.SQLT_VCS, C.SQLT_AVC:
		return reflect.SliceOf(reflect.TypeOf(""))
	case C.SQLT_BIN:
		return reflect.SliceOf(reflect.TypeOf(byte(0)))
	case C.SQLT_NUM:
		return reflect.TypeOf(int64(0))
	case C.SQLT_IBDOUBLE, C.SQLT_IBFLOAT:
		return reflect.TypeOf(float64(0))
	case C.SQLT_CLOB, C.SQLT_BLOB:
		return reflect.SliceOf(reflect.TypeOf(byte(0)))
	case C.SQLT_TIMESTAMP, C.SQLT_DAT:
		return reflect.TypeOf(time.Time{})
	case C.SQLT_TIMESTAMP_TZ, C.SQLT_TIMESTAMP_LTZ:
		return reflect.TypeOf(time.Time{})
	case C.SQLT_INTERVAL_DS:
		return reflect.TypeOf(time.Duration(0))
	case C.SQLT_INTERVAL_YM:
		return reflect.TypeOf(time.Duration(0))
	case C.SQLT_RDD: // rowid
		return reflect.SliceOf(reflect.TypeOf(""))
	default:
		return reflect.SliceOf(reflect.TypeOf(""))
	}
	return reflect.SliceOf(reflect.TypeOf(byte(0)))
}
示例#2
0
文件: oci8.go 项目: mattn/go-oci8
func (rc *OCI8Rows) ColumnTypeLength(i int) (length int64, ok bool) {
	var p unsafe.Pointer
	var lp C.ub2

	rp := C.WrapOCIParamGet(rc.s.s, C.OCI_HTYPE_STMT, (*C.OCIError)(rc.s.c.err), C.ub4(i+1))
	if rp.rv != C.OCI_SUCCESS {
		return 0, false
	}
	p = rp.ptr

	lpr := C.WrapOCIAttrGetUb2(p, C.OCI_DTYPE_PARAM, C.OCI_ATTR_DATA_SIZE, (*C.OCIError)(rc.s.c.err))
	if lpr.rv != C.OCI_SUCCESS {
		return 0, false
	}
	lp = lpr.num

	return int64(lp), true
}
示例#3
0
文件: oci8.go 项目: AsamQi/go-oci8
func (s *OCI8Stmt) Query(args []driver.Value) (rows driver.Rows, err error) {
	var (
		fbp []oci8bind
	)

	if fbp, err = s.bind(args); err != nil {
		return nil, err
	}

	defer freeBoundParameters(fbp)

	iter := C.ub4(1)
	if retUb2 := C.WrapOCIAttrGetUb2(s.s, C.OCI_HTYPE_STMT, C.OCI_ATTR_STMT_TYPE, (*C.OCIError)(s.c.err)); retUb2.rv != C.OCI_SUCCESS {
		return nil, ociGetError(s.c.err)
	} else if retUb2.num == C.OCI_STMT_SELECT {
		iter = 0
	}

	// set the row prefetch.  Only one extra row per fetch will be returned unless this is set.
	if prefetch_size := C.ub4(s.c.attrs.Get("prefetch_rows").(int)); prefetch_size > 0 {
		if rv := C.WrapOCIAttrSetUb4(s.s, C.OCI_HTYPE_STMT, prefetch_size, C.OCI_ATTR_PREFETCH_ROWS, (*C.OCIError)(s.c.err)); rv != C.OCI_SUCCESS {
			return nil, ociGetError(s.c.err)
		}
	}

	// if non-zero, oci will fetch rows until the memory limit or row prefetch limit is hit.
	// useful for memory constrained systems
	if prefetch_memory := C.ub4(s.c.attrs.Get("prefetch_memory").(int64)); prefetch_memory > 0 {
		if rv := C.WrapOCIAttrSetUb4(s.s, C.OCI_HTYPE_STMT, prefetch_memory, C.OCI_ATTR_PREFETCH_MEMORY, (*C.OCIError)(s.c.err)); rv != C.OCI_SUCCESS {
			return nil, ociGetError(s.c.err)
		}
	}

	mode := C.ub4(C.OCI_DEFAULT)
	if !s.c.inTransaction {
		mode = mode | C.OCI_COMMIT_ON_SUCCESS
	}
	if rv := C.OCIStmtExecute(
		(*C.OCISvcCtx)(s.c.svc),
		(*C.OCIStmt)(s.s),
		(*C.OCIError)(s.c.err),
		iter,
		0,
		nil,
		nil,
		mode); rv != C.OCI_SUCCESS {
		return nil, ociGetError(s.c.err)
	}

	var rc int
	if retUb2 := C.WrapOCIAttrGetUb2(s.s, C.OCI_HTYPE_STMT, C.OCI_ATTR_PARAM_COUNT, (*C.OCIError)(s.c.err)); retUb2.rv != C.OCI_SUCCESS {
		return nil, ociGetError(s.c.err)
	} else {
		rc = int(retUb2.num)
	}

	oci8cols := make([]oci8col, rc)
	for i := 0; i < rc; i++ {
		var p unsafe.Pointer
		var tp C.ub2
		var lp C.ub2

		if rp := C.WrapOCIParamGet(s.s, C.OCI_HTYPE_STMT, (*C.OCIError)(s.c.err), C.ub4(i+1)); rp.rv != C.OCI_SUCCESS {
			return nil, ociGetError(s.c.err)
		} else {
			p = rp.ptr
		}

		if tpr := C.WrapOCIAttrGetUb2(p, C.OCI_DTYPE_PARAM, C.OCI_ATTR_DATA_TYPE, (*C.OCIError)(s.c.err)); tpr.rv != C.OCI_SUCCESS {
			return nil, ociGetError(s.c.err)
		} else {
			tp = tpr.num
		}

		if nsr := C.WrapOCIAttrGetString(p, C.OCI_DTYPE_PARAM, C.OCI_ATTR_NAME, (*C.OCIError)(s.c.err)); nsr.rv != C.OCI_SUCCESS {
			return nil, ociGetError(s.c.err)
		} else {
			oci8cols[i].name = string((*[1 << 30]byte)(unsafe.Pointer(nsr.ptr))[0:int(nsr.size)])
		}

		if lpr := C.WrapOCIAttrGetUb2(p, C.OCI_DTYPE_PARAM, C.OCI_ATTR_DATA_SIZE, (*C.OCIError)(s.c.err)); lpr.rv != C.OCI_SUCCESS {
			return nil, ociGetError(s.c.err)
		} else {
			lp = lpr.num
		}
		/*
			var (
				defp *C.OCIDefine
			)
		*/
		*s.defp = nil
		switch tp {

		case C.SQLT_CHR, C.SQLT_AFC, C.SQLT_VCS, C.SQLT_AVC:
			// TODO: transfer as clob, read all bytes in loop
			// lp *= 4 // utf8 enc
			oci8cols[i].kind = C.SQLT_CHR  // tp
			oci8cols[i].size = int(lp) * 4 // utf8 enc
			oci8cols[i].pbuf = C.malloc(C.size_t(oci8cols[i].size) + 1)

		case C.SQLT_BIN:
			oci8cols[i].kind = C.SQLT_BIN
			oci8cols[i].size = int(lp)
			oci8cols[i].pbuf = C.malloc(C.size_t(oci8cols[i].size))

		case C.SQLT_NUM:
			oci8cols[i].kind = C.SQLT_CHR
			oci8cols[i].size = int(lp * 4)
			oci8cols[i].pbuf = C.malloc(C.size_t(oci8cols[i].size) + 1)

		case C.SQLT_IBDOUBLE, C.SQLT_IBFLOAT:
			oci8cols[i].kind = C.SQLT_IBDOUBLE
			oci8cols[i].size = int(8)
			oci8cols[i].pbuf = C.malloc(8)

		case C.SQLT_CLOB, C.SQLT_BLOB:
			// allocate +io buffers + ub4
			size := int(unsafe.Sizeof(unsafe.Pointer(nil)) + unsafe.Sizeof(C.ub4(0)))
			if oci8cols[i].size < blobBufSize {
				size += blobBufSize
			} else {
				size += oci8cols[i].size
			}
			if ret := C.WrapOCIDescriptorAlloc(s.c.env, C.OCI_DTYPE_LOB, C.size_t(size)); ret.rv != C.OCI_SUCCESS {
				return nil, ociGetError(s.c.err)
			} else {

				oci8cols[i].kind = tp
				oci8cols[i].size = int(unsafe.Sizeof(unsafe.Pointer(nil)))
				oci8cols[i].pbuf = ret.extra
				*(*unsafe.Pointer)(ret.extra) = ret.ptr

			}

			//      testing
			//		case C.SQLT_DAT:
			//
			//			oci8cols[i].kind = C.SQLT_DAT
			//			oci8cols[i].size = int(lp)
			//			oci8cols[i].pbuf = C.malloc(C.size_t(lp))
			//

		case C.SQLT_TIMESTAMP, C.SQLT_DAT:
			if ret := C.WrapOCIDescriptorAlloc(s.c.env, C.OCI_DTYPE_TIMESTAMP, C.size_t(unsafe.Sizeof(unsafe.Pointer(nil)))); ret.rv != C.OCI_SUCCESS {
				return nil, ociGetError(s.c.err)
			} else {

				oci8cols[i].kind = C.SQLT_TIMESTAMP
				oci8cols[i].size = int(unsafe.Sizeof(unsafe.Pointer(nil)))
				oci8cols[i].pbuf = ret.extra
				*(*unsafe.Pointer)(ret.extra) = ret.ptr
			}

		case C.SQLT_TIMESTAMP_TZ, C.SQLT_TIMESTAMP_LTZ:
			if ret := C.WrapOCIDescriptorAlloc(s.c.env, C.OCI_DTYPE_TIMESTAMP_TZ, C.size_t(unsafe.Sizeof(unsafe.Pointer(nil)))); ret.rv != C.OCI_SUCCESS {
				return nil, ociGetError(s.c.err)
			} else {

				oci8cols[i].kind = C.SQLT_TIMESTAMP_TZ
				oci8cols[i].size = int(unsafe.Sizeof(unsafe.Pointer(nil)))
				oci8cols[i].pbuf = ret.extra
				*(*unsafe.Pointer)(ret.extra) = ret.ptr
			}

		case C.SQLT_INTERVAL_DS:
			if ret := C.WrapOCIDescriptorAlloc(s.c.env, C.OCI_DTYPE_INTERVAL_DS, C.size_t(unsafe.Sizeof(unsafe.Pointer(nil)))); ret.rv != C.OCI_SUCCESS {
				return nil, ociGetError(s.c.err)
			} else {

				oci8cols[i].kind = C.SQLT_INTERVAL_DS
				oci8cols[i].size = int(unsafe.Sizeof(unsafe.Pointer(nil)))
				oci8cols[i].pbuf = ret.extra
				*(*unsafe.Pointer)(ret.extra) = ret.ptr
			}

		case C.SQLT_INTERVAL_YM:
			if ret := C.WrapOCIDescriptorAlloc(s.c.env, C.OCI_DTYPE_INTERVAL_YM, C.size_t(unsafe.Sizeof(unsafe.Pointer(nil)))); ret.rv != C.OCI_SUCCESS {
				return nil, ociGetError(s.c.err)
			} else {

				oci8cols[i].kind = C.SQLT_INTERVAL_YM
				oci8cols[i].size = int(unsafe.Sizeof(unsafe.Pointer(nil)))
				oci8cols[i].pbuf = ret.extra
				*(*unsafe.Pointer)(ret.extra) = ret.ptr
			}

		case C.SQLT_RDD: // rowid
			lp = 40
			oci8cols[i].pbuf = C.malloc(C.size_t(lp) + 1)
			oci8cols[i].kind = C.SQLT_CHR // tp
			oci8cols[i].size = int(lp + 1)

		default:
			oci8cols[i].pbuf = C.malloc(C.size_t(lp) + 1)
			oci8cols[i].kind = C.SQLT_CHR // tp
			oci8cols[i].size = int(lp + 1)
		}

		if rv := C.OCIDefineByPos(
			(*C.OCIStmt)(s.s),
			s.defp,
			(*C.OCIError)(s.c.err),
			C.ub4(i+1),
			oci8cols[i].pbuf,
			C.sb4(oci8cols[i].size),
			oci8cols[i].kind,
			unsafe.Pointer(&oci8cols[i].ind),
			&oci8cols[i].rlen,
			nil,
			C.OCI_DEFAULT); rv != C.OCI_SUCCESS {
			return nil, ociGetError(s.c.err)
		}
	}
	return &OCI8Rows{s, oci8cols, false}, nil
}
示例#4
0
文件: oci8.go 项目: mattn/go-oci8
// ColumnTypeDatabaseTypeName implement RowsColumnTypeDatabaseTypeName.
func (rc *OCI8Rows) ColumnTypeDatabaseTypeName(i int) string {
	var p unsafe.Pointer
	var tp C.ub2

	rp := C.WrapOCIParamGet(rc.s.s, C.OCI_HTYPE_STMT, (*C.OCIError)(rc.s.c.err), C.ub4(i+1))
	if rp.rv == C.OCI_SUCCESS {
		p = rp.ptr
	}

	tpr := C.WrapOCIAttrGetUb2(p, C.OCI_DTYPE_PARAM, C.OCI_ATTR_DATA_TYPE, (*C.OCIError)(rc.s.c.err))
	if tpr.rv == C.OCI_SUCCESS {
		tp = tpr.num
	}

	switch tp {
	case C.SQLT_CHR:
		return "SQLT_CHR"
	case C.SQLT_NUM:
		return "SQLT_NUM"
	case C.SQLT_INT:
		return "SQLT_INT"
	case C.SQLT_FLT:
		return "SQLT_FLT"
	case C.SQLT_STR:
		return "SQLT_STR"
	case C.SQLT_VNU:
		return "SQLT_VNU"
	case C.SQLT_LNG:
		return "SQLT_LNG"
	case C.SQLT_VCS:
		return "SQLT_VCS"
	case C.SQLT_DAT:
		return "SQLT_DAT"
	case C.SQLT_VBI:
		return "SQLT_VBI"
	case C.SQLT_BFLOAT:
		return "SQLT_BFLOAT"
	case C.SQLT_BDOUBLE:
		return "SQLT_BDOUBLE"
	case C.SQLT_BIN:
		return "SQLT_BIN"
	case C.SQLT_LBI:
		return "SQLT_LBI"
	case C.SQLT_UIN:
		return "SQLT_UIN"
	case C.SQLT_LVC:
		return "SQLT_LVC"
	case C.SQLT_LVB:
		return "SQLT_LVB"
	case C.SQLT_AFC:
		return "SQLT_AFC"
	case C.SQLT_AVC:
		return "SQLT_AVC"
	case C.SQLT_RDD:
		return "SQLT_RDD"
	case C.SQLT_NTY:
		return "SQLT_NTY"
	case C.SQLT_REF:
		return "SQLT_REF"
	case C.SQLT_CLOB:
		return "SQLT_CLOB"
	case C.SQLT_BLOB:
		return "SQLT_BLOB"
	case C.SQLT_FILE:
		return "SQLT_FILE"
	case C.SQLT_VST:
		return "SQLT_VST"
	case C.SQLT_ODT:
		return "SQLT_ODT"
	case C.SQLT_DATE:
		return "SQLT_DATE"
	case C.SQLT_TIMESTAMP:
		return "SQLT_TIMESTAMP"
	case C.SQLT_TIMESTAMP_TZ:
		return "SQLT_TIMESTAMP_TZ"
	case C.SQLT_INTERVAL_YM:
		return "SQLT_INTERVAL_YM"
	case C.SQLT_INTERVAL_DS:
		return "SQLT_INTERVAL_DS"
	case C.SQLT_TIMESTAMP_LTZ:
		return "SQLT_TIMESTAMP_LTZ"
	}
	return ""
}