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Added support to read nested binary from parquet #978

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May 5, 2022
Merged

Added support to read nested binary from parquet #978

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52 changes: 19 additions & 33 deletions src/io/parquet/read/deserialize/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -221,31 +221,34 @@ where
chunk_size,
)
}
LargeBinary => {
LargeUtf8 => {
types.pop();
binary::iter_to_arrays_nested::<i64, BinaryArray<i64>, _>(
binary::iter_to_arrays_nested::<i64, Utf8Array<i64>, _>(
columns.pop().unwrap(),
init.pop().unwrap(),
field.data_type().clone(),
chunk_size,
)
}
List(inner) => {
let iter = columns_to_iter_recursive(
vec![columns.pop().unwrap()],
types,
inner.as_ref().clone(),
init,
Binary => {
types.pop();
binary::iter_to_arrays_nested::<i32, BinaryArray<i32>, _>(
columns.pop().unwrap(),
init.pop().unwrap(),
field.data_type().clone(),
chunk_size,
)?;
let iter = iter.map(move |x| {
let (mut nested, array) = x?;
let array = create_list(field.data_type().clone(), &mut nested, array)?;
Ok((nested, array))
});
Box::new(iter) as _
)
}
LargeBinary => {
types.pop();
binary::iter_to_arrays_nested::<i64, BinaryArray<i64>, _>(
columns.pop().unwrap(),
init.pop().unwrap(),
field.data_type().clone(),
chunk_size,
)
}
LargeList(inner) => {
List(inner) | LargeList(inner) | FixedSizeList(inner, _) => {
let iter = columns_to_iter_recursive(
vec![columns.pop().unwrap()],
types,
Expand Down Expand Up @@ -277,23 +280,6 @@ where
let columns = columns.into_iter().rev().collect();
Box::new(struct_::StructIterator::new(columns, fields.clone()))
}
FixedSizeList(inner, _) => {
let iter = columns_to_iter_recursive(
vec![columns.pop().unwrap()],
types,
inner.as_ref().clone(),
init,
chunk_size,
)?;
let iter = iter.map(move |x| {
let (mut nested, array) = x?;
println!("{nested:?}");
println!("{array:?}");
let array = create_list(field.data_type().clone(), &mut nested, array)?;
Ok((nested, array))
});
Box::new(iter) as _
}
other => todo!("{other:?}"),
})
}
Expand Down