Method IsValid

memstore/common/data_value.go:754–758

IsValid check if the item in index-th place is valid or not

(index int)

// IsValid check if the item in index-th place is valid or not
func (reader *ArrayValueReader) IsValid(index int) bool {
	nilOffset := CalculateListNilOffset(reader.itemType, int(reader.length))
	nilByte := *(*byte)(unsafe.Pointer(uintptr(reader.value) + uintptr(nilOffset) + uintptr(index/8)))
	return nilByte&(0x1<<uint8(index%8)) != 0x0
}

// CalculateListElementBytes returns the total size in bytes needs to be allocated for a list type column for a single
// row along with the validity vector start.