mathyingzhou commented on a change in pull request #8648:
URL: https://github.com/apache/arrow/pull/8648#discussion_r614551452
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File path: cpp/src/arrow/adapters/orc/adapter_util.cc
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@@ -315,13 +344,662 @@ Status AppendBatch(const liborc::Type* type,
liborc::ColumnVectorBatch* batch,
return Status::NotImplemented("Not implemented type kind: ", kind);
}
}
+} // namespace orc
+} // namespace adapters
+} // namespace arrow
+
+namespace {
+
+using arrow::internal::checked_cast;
+
+arrow::Status WriteBatch(const arrow::Array& parray, int64_t orc_offset,
+ liborc::ColumnVectorBatch* column_vector_batch,
+ bool normalized = false);
+
+// Make sure children of StructArray have appropriate null.
+std::shared_ptr<arrow::Array> NormalizeArray(const
std::shared_ptr<arrow::Array>& array) {
+ arrow::Type::type kind = array->type_id();
+ switch (kind) {
+ case arrow::Type::type::BOOL:
+ case arrow::Type::type::INT8:
+ case arrow::Type::type::INT16:
+ case arrow::Type::type::INT32:
+ case arrow::Type::type::INT64:
+ case arrow::Type::type::FLOAT:
+ case arrow::Type::type::DOUBLE:
+ case arrow::Type::type::STRING:
+ case arrow::Type::type::LARGE_STRING:
+ case arrow::Type::type::BINARY:
+ case arrow::Type::type::LARGE_BINARY:
+ case arrow::Type::type::FIXED_SIZE_BINARY:
+ case arrow::Type::type::DATE32:
+ case arrow::Type::type::DATE64:
+ case arrow::Type::type::TIMESTAMP:
+ case arrow::Type::type::DECIMAL128: {
+ return array;
+ }
+ case arrow::Type::type::STRUCT: {
+ if (array->null_count() == 0) {
+ return array;
+ } else {
+ auto struct_array =
std::static_pointer_cast<arrow::StructArray>(array);
+ const std::shared_ptr<arrow::Buffer> bitmap =
struct_array->null_bitmap();
+ std::shared_ptr<arrow::DataType> struct_type = struct_array->type();
+ std::size_t size = struct_type->fields().size();
+ std::vector<std::shared_ptr<arrow::Array>> new_children(size, nullptr);
+ for (std::size_t i = 0; i < size; i++) {
+ std::shared_ptr<arrow::Array> child = struct_array->field(i);
+ const std::shared_ptr<arrow::Buffer> child_bitmap =
child->null_bitmap();
Review comment:
Ah actually we don't need it for this release. I need to add it when
implementing the ORC reader & writer for union types though.
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