Marvin Lanhenke

feat: add `ExpressionEvaluator`

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### Which issue does this PR close? Closes #358 ### Rationale for this change - adds the capability to prune `DataFile`s in TableScan ### What changes are included in this...

Implement `ExpressionEvaluator`

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As mentioned in #348: We need to implement the ExpressionEvaluator, that binds the `partition_spec` to the `102: partition struct` and evaluates it. Python implementation (or the start of the workflow)...

Tracking Issue: Integration with Datafusion

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## Motivation: Once we merge #324 and complete the basic groundwork, the integration crate can be continuously refined. Due to for example more supported features like predicate pushdown, etc. This...

Discussion: Next steps / requirements to support `append` files

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...out of curiosity, I took a closer look at the pyiceberg impl and how the `Table.append()` works. Now, I would like to pick your brain, in order to understand and...

In the python implementations both catalogs perform validations by converting the respective catalog table into an iceberg table. As of right now those checks are missing in our catalog implementations....