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vector_setters.go
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/
vector_setters.go
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package duckdb
/*
#include <stdlib.h>
#include <duckdb.h>
*/
import "C"
import (
"math/big"
"time"
"unsafe"
)
// secondsPerDay to calculate the days since 1970-01-01.
const secondsPerDay = 24 * 60 * 60
// fnSetVectorValue is the setter callback function for any (nested) vector.
type fnSetVectorValue func(vec *vector, rowIdx C.idx_t, val any)
func (vec *vector) setNull(rowIdx C.idx_t) {
C.duckdb_vector_ensure_validity_writable(vec.duckdbVector)
mask := C.duckdb_vector_get_validity(vec.duckdbVector)
C.duckdb_validity_set_row_invalid(mask, rowIdx)
if vec.duckdbType == C.DUCKDB_TYPE_STRUCT {
for i := 0; i < len(vec.childVectors); i++ {
vec.childVectors[i].setNull(rowIdx)
}
}
}
func setPrimitive[T any](vec *vector, rowIdx C.idx_t, v T) {
ptr := C.duckdb_vector_get_data(vec.duckdbVector)
xs := (*[1 << 31]T)(ptr)
xs[rowIdx] = v
}
func (vec *vector) setTS(duckdbType C.duckdb_type, rowIdx C.idx_t, val any) {
v := val.(time.Time)
var ticks int64
switch duckdbType {
case C.DUCKDB_TYPE_TIMESTAMP:
ticks = v.UTC().UnixMicro()
case C.DUCKDB_TYPE_TIMESTAMP_S:
ticks = v.UTC().Unix()
case C.DUCKDB_TYPE_TIMESTAMP_MS:
ticks = v.UTC().UnixMilli()
case C.DUCKDB_TYPE_TIMESTAMP_NS:
ticks = v.UTC().UnixNano()
case C.DUCKDB_TYPE_TIMESTAMP_TZ:
ticks = v.UTC().UnixMicro()
}
var ts C.duckdb_timestamp
ts.micros = C.int64_t(ticks)
setPrimitive(vec, rowIdx, ts)
}
func (vec *vector) setDate(rowIdx C.idx_t, val any) {
// Days since 1970-01-01.
v := val.(time.Time)
days := int32(v.UTC().Unix() / secondsPerDay)
var date C.duckdb_date
date.days = C.int32_t(days)
setPrimitive(vec, rowIdx, date)
}
func (vec *vector) setTime(rowIdx C.idx_t, val any) {
v := val.(time.Time)
ticks := v.UTC().UnixMicro()
var t C.duckdb_time
t.micros = C.int64_t(ticks)
setPrimitive(vec, rowIdx, t)
}
func (vec *vector) setInterval(rowIdx C.idx_t, val any) {
v := val.(Interval)
var interval C.duckdb_interval
interval.days = C.int32_t(v.Days)
interval.months = C.int32_t(v.Months)
interval.micros = C.int64_t(v.Micros)
setPrimitive(vec, rowIdx, interval)
}
func (vec *vector) setHugeint(rowIdx C.idx_t, val any) {
v := val.(*big.Int)
hugeInt, _ := hugeIntFromNative(v)
setPrimitive(vec, rowIdx, hugeInt)
}
func (vec *vector) setCString(rowIdx C.idx_t, val any) {
var str string
if vec.duckdbType == C.DUCKDB_TYPE_VARCHAR {
str = val.(string)
} else if vec.duckdbType == C.DUCKDB_TYPE_BLOB {
str = string(val.([]byte)[:])
}
// This setter also writes BLOBs.
cStr := C.CString(str)
C.duckdb_vector_assign_string_element_len(vec.duckdbVector, rowIdx, cStr, C.idx_t(len(str)))
C.free(unsafe.Pointer(cStr))
}
func (vec *vector) setDecimal(internalType C.duckdb_type, rowIdx C.idx_t, val any) {
v := val.(Decimal)
switch internalType {
case C.DUCKDB_TYPE_SMALLINT:
setPrimitive(vec, rowIdx, int16(v.Value.Int64()))
case C.DUCKDB_TYPE_INTEGER:
setPrimitive(vec, rowIdx, int32(v.Value.Int64()))
case C.DUCKDB_TYPE_BIGINT:
setPrimitive(vec, rowIdx, v.Value.Int64())
case C.DUCKDB_TYPE_HUGEINT:
value, _ := hugeIntFromNative(v.Value)
setPrimitive(vec, rowIdx, value)
}
}
func (vec *vector) setEnum(internalType C.duckdb_type, rowIdx C.idx_t, val any) {
v := vec.dict[val.(string)]
switch internalType {
case C.DUCKDB_TYPE_UTINYINT:
setPrimitive(vec, rowIdx, uint8(v))
case C.DUCKDB_TYPE_USMALLINT:
setPrimitive(vec, rowIdx, uint16(v))
case C.DUCKDB_TYPE_UINTEGER:
setPrimitive(vec, rowIdx, v)
case C.DUCKDB_TYPE_UBIGINT:
setPrimitive(vec, rowIdx, uint64(v))
}
}
func (vec *vector) setList(rowIdx C.idx_t, val any) {
list := val.([]any)
childVectorSize := C.duckdb_list_vector_get_size(vec.duckdbVector)
// Set the offset and length of the list vector using the current size of the child vector.
listEntry := C.duckdb_list_entry{
offset: C.idx_t(childVectorSize),
length: C.idx_t(len(list)),
}
setPrimitive(vec, rowIdx, listEntry)
newLength := C.idx_t(len(list)) + childVectorSize
C.duckdb_list_vector_set_size(vec.duckdbVector, newLength)
C.duckdb_list_vector_reserve(vec.duckdbVector, newLength)
// Insert the values into the child vector.
childVector := &vec.childVectors[0]
for i, entry := range list {
offset := C.idx_t(i) + childVectorSize
childVector.setFn(childVector, offset, entry)
}
}
func (vec *vector) setStruct(rowIdx C.idx_t, val any) {
m := val.(map[string]any)
for i := 0; i < len(vec.childVectors); i++ {
childVector := &vec.childVectors[i]
childName := vec.childNames[i]
childVector.setFn(childVector, rowIdx, m[childName])
}
}
func (vec *vector) setMap(rowIdx C.idx_t, val any) {
m := val.(Map)
// Create a LIST of STRUCT values.
i := 0
list := make([]any, len(m))
for key, value := range m {
list[i] = map[string]any{mapKeysField(): key, mapValuesField(): value}
i++
}
vec.setList(rowIdx, list)
}