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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/10/12 13:21:08 UTC
[GitHub] [arrow] rtpsw commented on a diff in pull request #14385: ARROW-17980: [C++] As-of-Join Substrait extension
rtpsw commented on code in PR #14385:
URL: https://github.com/apache/arrow/pull/14385#discussion_r993453755
##########
cpp/src/arrow/engine/substrait/serde_test.cc:
##########
@@ -3187,5 +3198,164 @@ TEST(Substrait, IsthmusPlan) {
*compute::default_exec_context(), buf, {}, conversion_options);
}
+TEST(Substrait, PlanWithExtension) {
+ // This demos an extension relation
+ std::string substrait_json = R"({
+ "extensionUris": [],
+ "extensions": [],
+ "relations": [{
+ "root": {
+ "input": {
+ "extension_multi": {
+ "common": {
+ "emit": {
+ "outputMapping": [0, 1, 2, 3]
+ }
+ },
+ "inputs": [
+ {
+ "read": {
+ "common": {
+ "direct": {
+ }
+ },
+ "baseSchema": {
+ "names": ["time", "key", "value1"],
+ "struct": {
+ "types": [
+ {
+ "i32": {
+ "typeVariationReference": 0,
+ "nullability": "NULLABILITY_NULLABLE"
+ }
+ },
+ {
+ "i32": {
+ "typeVariationReference": 0,
+ "nullability": "NULLABILITY_NULLABLE"
+ }
+ },
+ {
+ "fp64": {
+ "typeVariationReference": 0,
+ "nullability": "NULLABILITY_NULLABLE"
+ }
+ }
+ ],
+ "typeVariationReference": 0,
+ "nullability": "NULLABILITY_REQUIRED"
+ }
+ },
+ "namedTable": {
+ "names": ["T1"]
+ }
+ }
+ },
+ {
+ "read": {
+ "common": {
+ "direct": {
+ }
+ },
+ "baseSchema": {
+ "names": ["time", "key", "value2"],
+ "struct": {
+ "types": [
+ {
+ "i32": {
+ "typeVariationReference": 0,
+ "nullability": "NULLABILITY_NULLABLE"
+ }
+ },
+ {
+ "i32": {
+ "typeVariationReference": 0,
+ "nullability": "NULLABILITY_NULLABLE"
+ }
+ },
+ {
+ "fp64": {
+ "typeVariationReference": 0,
+ "nullability": "NULLABILITY_NULLABLE"
+ }
+ }
+ ],
+ "typeVariationReference": 0,
+ "nullability": "NULLABILITY_REQUIRED"
+ }
+ },
+ "namedTable": {
+ "names": ["T2"]
+ }
+ }
+ }
+ ],
+ "detail": {
+ "@type": "/arrow.substrait.AsOfJoinRel",
+ "on": {
+ "selection": {
+ "directReference": {
+ "structField": {
+ "field": 0,
+ }
+ },
+ "rootReference": {}
+ }
+ },
+ "by": [
+ {
+ "selection": {
+ "directReference": {
+ "structField": {
Review Comment:
It means access to a field by index. It leads Arrow Substrait to create a `FieldRef` with the field index given inside.
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