[SPARK-7813] Push code generation into expression definition

• Type: Improvement
• Status: Resolved
• Priority: Critical
• Resolution: Duplicate
• Fix Version/s: 1.5.0
• Component/s: SQL
• Labels: codegen
• Target Version/s: 1.5.0
• Epic Link: Tungsten Phase 1
• Assignee: Davies Liu
• Reporter: Reynold Xin
• Created: 22/May/15 01:06
• Updated: 07/Jun/15 21:12
• Resolved: 07/Jun/15 21:12

Description

Right now we define all expression code generation in a single file. If we want to do code generation for most default expressions, it'd only make sense to push them into the expression definitions themselves (similar to "eval" method).

We would need to design an updated version of the expression API for that. Once this is done, we can parallelize the work to convert expressions into code-gen versions.

Issue Links

• duplicates: SPARK-8117 Push codegen into Expression