Looks like I need the below in datatypes.rs
impl From<i32> for Int32Type {
fn from(value: i32) -> Self {
value.into()
}
}
Adding that to the `make_type` macro seems to have solved my problem. I can
now implement things like `count`, `mean`, and a few more types of
calculations and aggregations on arrays.
On Mon, 7 Jan 2019 at 18:42, Neville Dipale <nevilled...@gmail.com> wrote:
> Thanks Andy,
>
> I'm aware of that, and have tried it with no success. What I am looking
> for might be similar to ScalarValue in DataFusion.
>
> If I create an array like Int32Array::from(vec![1]), and try to get the
> first value from this array, I get the primitive 1i32 instead of what I'm
> looking for.
>
> On Mon, 07 Jan 2019, 17:09 Andy Grove <andygrov...@gmail.com wrote:
>
>> It is possible to create an array of Arrow types from a vec of primitives
>> e.g. Int32Array::from(vec![1, 2, 3]) IIRC.
>>
>> Andy.
>>
>> On Mon, Jan 7, 2019 at 5:09 AM Neville Dipale <nevilled...@gmail.com>
>> wrote:
>>
>> > I'm trying to find/create a way of converting primitive rust values in
>> Rust
>> > to their ArrowNativeType counterparts.
>> > I'm trying to implement some array ops which need constant values, so I
>> can
>> > be able to multiply say a Int32Type by 3 to get a value.
>> >
>> > Is there currently a way of doing this that I don't know of, or can I
>> open
>> > a JIRA for this?
>> >
>> > Neville
>> >
>>
>
