alamb commented on a change in pull request #1507:
URL: https://github.com/apache/arrow-rs/pull/1507#discussion_r839904906
##########
File path: arrow/src/array/array_map.rs
##########
@@ -152,6 +155,44 @@ impl MapArray {
value_offsets,
})
}
+
+ /// Creates map array from provided keys, values and entry_offsets.
+ pub fn new_from_strings<'a>(
+ keys: impl Iterator<Item = &'a str>,
+ values: ArrayData,
Review comment:
What would you think about using a `values: &dyn Array` here? I think
that might be more natural
Also while reviewing this PR, it seems like keys and entry_offsets are
connected to be matched -- I wonder if it would make more sense to have a
function like
```rust
pub fn new_keys_and_offsets<'a>(
keys_and_offsets: impl Iterator<Item = (&'a str, usize)>,
values: &dyn Array,
)
...
```
So that the user would provide some way to provide the key names and offsets
into values directly 🤔
##########
File path: arrow/src/array/array_map.rs
##########
@@ -152,6 +155,44 @@ impl MapArray {
value_offsets,
})
}
+
+ /// Creates map array from provided keys, values and entry_offsets.
+ pub fn new_from_strings<'a>(
+ keys: impl Iterator<Item = &'a str>,
+ values: ArrayData,
+ entry_offsets: &[u32],
+ ) -> Result<Self, ArrowError> {
+ let entry_offsets_buffer = Buffer::from(entry_offsets.to_byte_slice());
+ let keys_data = StringArray::from_iter_values(keys);
+
+ let keys_field = Field::new("keys", DataType::Utf8, false);
+ let values_feild = Field::new(
Review comment:
```suggestion
let values_field = Field::new(
```
##########
File path: arrow/src/array/array_map.rs
##########
@@ -152,6 +155,44 @@ impl MapArray {
value_offsets,
})
}
+
+ /// Creates map array from provided keys, values and entry_offsets.
+ pub fn new_from_strings<'a>(
+ keys: impl Iterator<Item = &'a str>,
+ values: ArrayData,
+ entry_offsets: &[u32],
+ ) -> Result<Self, ArrowError> {
+ let entry_offsets_buffer = Buffer::from(entry_offsets.to_byte_slice());
+ let keys_data = StringArray::from_iter_values(keys);
+
+ let keys_field = Field::new("keys", DataType::Utf8, false);
+ let values_feild = Field::new(
Review comment:
minor typo
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