viirya commented on a change in pull request #1449:
URL: https://github.com/apache/arrow-rs/pull/1449#discussion_r828568441
##########
File path: arrow/src/ffi.rs
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@@ -781,11 +781,19 @@ impl ArrowArray {
.to_string(),
));
};
- let ffi_array = (*array).clone();
- let ffi_schema = (*schema).clone();
+
+ let array_mut = array as *mut FFI_ArrowArray;
+ let schema_mut = schema as *mut FFI_ArrowSchema;
+
+ let array_data = std::ptr::replace(array_mut, FFI_ArrowArray::empty());
Review comment:
> another one allowing importer to allocate memory for exporter
If Rust side is importer, we already have it as we can do it now by creating
empty structs, passing raw pointers to exporter.
If Java side is importer, we may need an export API which takes raw pointers
from Java and replaces its content.
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