I don’t know of any such facility. I suppose someone could do for AST trees what RelJson and RelWriterTest do for RelNode trees.
Can you please log a Jira case for this? It’s good to have a placeholder in case someone feels like picking it up in future. Julian [1] https://github.com/apache/calcite/blob/HEAD/core/src/main/java/org/apache/calcite/rel/externalize/RelJson.java [2] https://github.com/apache/calcite/blob/HEAD/core/src/test/java/org/apache/calcite/plan/RelWriterTest.java On Jul 21, 2022, at 5:36 AM, Parag Jain <pja...@apache.org> wrote: Hello, We are using calcite in our project to parse and manipulate SQL. We have also extended the parser for our use case. Now, we would like to serialize the parsed SqlNode with type information and pass it to a different system over wire for query intelligence. We were thinking of using protobuf for this, I was wondering if anyone has already done similar work or thought about a good approach to achieve serialization of a parsed query. Thanks
