Make `and` expression JSON serializable

[Fokko]

Feature Request / Improvement

Make sure that the and expression can be serialized to JSON:

https://github.com/apache/iceberg-python/blob/e5e74534a4938fcace2c782a237474b7e94da68c/pyiceberg/expressions/init.py#L250

This should follow:

{
    "type": "and",
    "left": BooleanExpression,
    "right": BooleanExpression
}

Where BooleanExpression refers to the class:

https://github.com/apache/iceberg-python/blob/e5e74534a4938fcace2c782a237474b7e94da68c/pyiceberg/expressions/init.py#L250

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

[tanmayrauth]

Hi @Fokko, can work on this issue?

[kevinjqliu]

hey @tanmayrauth normally i would say please feel free to submit a PR. But for this one, it looks like Fokko might have created it specifically for "PyData Amsterdam 2025" which i think is right now.

So lets wait a bit and see if this is already taken

[Fokko]

@tanmayrauth Indeed, as @kevinjqliu is saying, this is staged for the open source sprints for PyData Amsterdam. After today, I'll delete the label, and everyone is welcome to jump in :)

[Fokko]

I've removed the label and this one is up for grabs. Keep in min that this issue requires BooleanExpression to extend IcebergBaseModel, so it would be good to get the unary/literal/set predicates in first.

[tanmayrauth]

@kevinjqliu Can I pick this up?

[kevinjqliu]

hey @tanmayrauth feel free to submit a PR for this one (and other ones too)! Generally the issues are first come first serve. You dont need permission to work on something :) We just want to make sure that there's no duplicate effort from multiple people