tree c1abe2d345a69e78b176537e9c98278396709e73
parent 6cc3dc2ef4d2ffbff7ffc400e723b97b462e1bab
author Uros Bojanic <157381213+uros-db@users.noreply.github.com> 1715241667 +0800
committer Wenchen Fan <wenchen@databricks.com> 1715241667 +0800

[SPARK-48186][SQL] Add support for AbstractMapType

### What changes were proposed in this pull request?
Addition of an abstract MapType (similar to abstract ArrayType in sql internal types) which accepts `StringTypeCollated` as `keyType` & `valueType`. Apart from extending this interface for all Spark functions, this PR also introduces collation awareness for json expression: schema_of_json.

### Why are the changes needed?
This is needed in order to enable collation support for functions that use collated maps.

### Does this PR introduce _any_ user-facing change?
Yes, users should now be able to use collated strings within arguments for json function: schema_of_json.

### How was this patch tested?
E2e sql tests.

### Was this patch authored or co-authored using generative AI tooling?
No.

Closes #46458 from uros-db/abstract-map.

Authored-by: Uros Bojanic <157381213+uros-db@users.noreply.github.com>
Signed-off-by: Wenchen Fan <wenchen@databricks.com>