Ben Kietzman created ARROW-7151: ----------------------------------- Summary: [C++] Refactor ExpressionEvaluator to yield Arrays Key: ARROW-7151 URL: https://issues.apache.org/jira/browse/ARROW-7151 Project: Apache Arrow Issue Type: Improvement Components: C++, C++ - Dataset Reporter: Ben Kietzman Assignee: Ben Kietzman Fix For: 1.0.0
Currently expressions can be evaluated to scalars or arrays, mostly to accomodate ScalarExpression. Instead let all expressions be evaluable to Array only. ScalarExpression will evaluate to an array of repeated values, but expressions whose corresponding kernels can accept a scalar directly (comparison, for example) can avoid materializing this array. -- This message was sent by Atlassian Jira (v8.3.4#803005)