[CAY-2465] New SelectTranslator implementation

• Type: Task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.2.M1
• Component/s: Core Library, Database integration
• Assignee: Nikita Timofeev
• Reporter: Nikita Timofeev
• Created: 29/Aug/18 08:48
• Updated: 09/Jan/19 12:13
• Resolved: 09/Jan/19 12:13

Description

Current implementation (DefaultSelectTranslator) is monolithic and can't be effectively maintained or extended. So we need a better one.

Requirements for new translator:

• full compatibility with current version, i.e. it should implement SelectTranslator interface and pass all tests
• extensibility, as a first extension it should support subqueries

Issue Links

• is required by: CAY-2378 Switch usage of SelectQuery to ObjectSelect internally
• is required by: CAY-2468 Support subqueries in Expression API
• requires: CAY-2466 New internal API to build SQL