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Posted to issues@iceberg.apache.org by "Fokko (via GitHub)" <gi...@apache.org> on 2025/09/25 20:31:52 UTC
[I] Make `UnaryPredicate` predicate JSON serializable [iceberg-python]
Fokko opened a new issue, #2522:
URL: https://github.com/apache/iceberg-python/issues/2522
### Feature Request / Improvement
Make sure that the `UnaryPredicate` predicate can be serialized to JSON:
https://github.com/apache/iceberg-python/blob/e5e74534a4938fcace2c782a237474b7e94da68c/pyiceberg/expressions/__init__.py#L432-L443
This predicate has four implementations: `IsNull`, `NotNull`, `IsNaN`, and `NotNan`, and translates to:
```json
{
"type": "is-null" // Or not-null, is-nan, not-nan
"term": str, // The column name
}
```
We use Pydantic for JSON serialization, which can be enabled by deriving from the `IcebergBaseModel`:
https://github.com/apache/iceberg-python/blob/e5e74534a4938fcace2c782a237474b7e94da68c/pyiceberg/partitioning.py#L124
Example tests can be found here:
https://github.com/apache/iceberg-python/blob/e5e74534a4938fcace2c782a237474b7e94da68c/tests/table/test_partitioning.py#L116-L132
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Re: [I] Make `UnaryPredicate` predicate JSON serializable [iceberg-python]
Posted by "Fokko (via GitHub)" <gi...@apache.org>.
Fokko closed issue #2522: Make `UnaryPredicate` predicate JSON serializable
URL: https://github.com/apache/iceberg-python/issues/2522
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Re: [I] Make `UnaryPredicate` predicate JSON serializable [iceberg-python]
Posted by "tanmayrauth (via GitHub)" <gi...@apache.org>.
tanmayrauth commented on issue #2522:
URL: https://github.com/apache/iceberg-python/issues/2522#issuecomment-3336212225
Hi @Fokko, can work on this issue?
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Re: [I] Make `UnaryPredicate` predicate JSON serializable [iceberg-python]
Posted by "Fokko (via GitHub)" <gi...@apache.org>.
Fokko commented on issue #2522:
URL: https://github.com/apache/iceberg-python/issues/2522#issuecomment-3715543396
Fixed in https://github.com/apache/iceberg-python/pull/2598
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