phenotypic.sdk_.build_metadata_table_descriptor#

phenotypic.sdk_.build_metadata_table_descriptor(tables: PreparedImageTables) → dict[str, object][source]#

Build the stable root descriptor for one embedded metadata table.

It records what the file is, not how it joins: the join keys are on the Parquet’s own key/value metadata and in the root’s metadata_table block, and repeating them a third time here would be a third home for one fact.

Parameters:

tables (PreparedImageTables)

Return type:

dict[str, object]