Dane Pitkin

GH-40312: [Python] Add ListView documentation to user guide

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### Rationale for this change Add documentation of the new ListView array type. ### What changes are included in this PR? * Update the PyArrow data types documentation page ###...

GH-40205: [Python] ListView arrow-to-pandas conversion

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### Rationale for this change ListView should support converting to pandas/numpy in pyarrow. ### What changes are included in this PR? * `.to_pandas()` successfully creates a pandas dataframe ### Are...

### Describe the enhancement requested Add conversion to numpy and pandas from ListView and LargeListView types in PyArrow. ### Component(s) Python

GH-39982: [Java] Add RunEndEncodedVector

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# WIP ### Rationale for this change Add REE vectors to the Java implementation as per the Arrow spec. ### What changes are included in this PR? WIP ### Are...

feat: support Substrait ExtendedExpression

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It would be neat if we could create Substrait expressions from Ibis expressions. One use case would be to project/filter pyarrow datasets. See https://gist.github.com/ianmcook/f70fc185d29ae97bdf85ffe0378c68e0 for an example that could benefit...

feat: add PhysicalJoinType

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BREAKING CHANGE: the JoinType for physical operators HashJoin, MergeJoin, and NestedLoopJoin has been refactored into a shared enum called PhysicalJoinType. It is wire compatible and a new is_null_aware field is...

HashJoin, MergeJoin, and NestedLoopJoin all duplicate the JoinType: ``` enum JoinType { JOIN_TYPE_UNSPECIFIED = 0; JOIN_TYPE_INNER = 1; JOIN_TYPE_OUTER = 2; JOIN_TYPE_LEFT = 3; JOIN_TYPE_RIGHT = 4; JOIN_TYPE_LEFT_SEMI = 5;...

[Java] Remove Java 8 support in Arrow v18

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### Describe the enhancement requested 1. Java 8 is holding back development of newer Java features. For example, the Java Platform Module System (JPMS)[1], which was introduced in Java 9....

### Describe the enhancement requested types.py redefines type traits such as `is_nested()` that is already defined in type_traits.h/cc. Could we import and use the C++ type traits instead? See https://github.com/apache/arrow/pull/40265/files#r1505826814...

Should Flatbuffers be modularized? Flatbuffers is a low-level dependency for many Java projects. The Java Platform Module System (JPMS) was designed to have dependencies modularize bottom-up in the dependency graph....