Array empty type - #2593
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- add EmptyArrayType with type_empty_array() DSL, detected for [] at
every depth
- keep list/map/structure detection byte-identical for all other inputs
- treat array{} like array<mixed> in type comparability
- project array{} onto json wherever an ETL Definition is built, column
and nested
- ParquetEncoder converts json/uuid leaves at any depth via schema-driven ValueConverters, not just top-level columns - arrow-ext reader returns canonical uuid strings for nested struct/list/map leaves - arrow-ext writer keeps extension metadata on map key/value fields, fixing a process abort on map<string, uuid|json> writes - writer schema mismatches now raise exceptions instead of panicking
- TypeProjection maps ArrayType to json, matching the array{} rule
- UnionTypeNormalizer collapsed to TypeProjection::union() delegation
- to_floe() no longer widens every inferred column to nullable; the footer schema is the first batch's union, so non-nullable declarations survive a round-trip - to_json()/to_json_lines() emit list/map/structure/array entries as nested JSON instead of escaped strings, normalizing nested datetime/interval/uuid/json/enum leaves
…ejects its own input - scalar values mixed with arrays no longer count as homogeneous lists/maps; they detect as array<mixed> - valueType() widens to array<mixed> instead of dropping types by order ([] still keeps a list/map element type)
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Change Log
Added
flow-php/types-array{}empty array type withtype_empty_array()DSL functionflow-php/etl-array<mixed>andarray{}project ontojsonat any schema depthFixed
flow-php/etl-adapter-parquet- nestedjsonanduuidvalues round-trip through parquet encode and decodeflow-php/arrow-ext- nesteduuidvalues read as canonical strings, map writes throw exceptions instead of aborting the processflow-php/etl- Floe inferred schema preserves first batch nullability instead of making every column nullableflow-php/types- array type detection never returns a type that rejects its own inputChanged
flow-php/etl-adapter-json-to_json()/to_json_lines()write list/map/structure/array entries as nested JSON instead of escaped stringsRemoved
Deprecated
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