[HIVE-17981] Create a set of builders for Thrift classes

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0
• Component/s: Standalone Metastore
• Labels: pull-request-available
• Assignee: Alan Gates
• Reporter: Alan Gates
• Created: 03/Nov/17 23:34
• Updated: 01/Oct/19 22:07
• Resolved: 18/Dec/17 22:29

Description

Instantiating some of the Thrift classes is painful. Consider building a Table object, which requires a StorageDescriptor, which requires a SerDeInfo and a list of FieldInfo. All that is really necessary for a Table in the most simple case is a name, a database, and some columns. But currently creating even a simple Table requires 20+ lines of code. This is particularly painful in tests.

I propose to add a set of builders. These will come with reasonable defaults to minimize the boilerplate code. They will also include simple methods for common operations (like adding columns, or a parameter) without requiring the user to create all the sub-objects (like StorageDescriptor).

Issue Links

• relates to: HIVE-18355 Add builder for metastore Thrift classes missed in the first pass - FunctionBuilder
• links to: GitHub Pull Request #274