[FLINK-3060] Add possibility to integrate custom types into the TypeExtractor

• Type: New Feature
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.2.0
• Component/s: API / Type Serialization System
• Assignee: Timo Walther
• Reporter: Timo Walther
• Created: 23/Nov/15 14:32
• Updated: 21/Sep/16 12:16
• Resolved: 21/Sep/16 12:16

Description

As discussed in FLINK-3002. It would be nice if we could make custom type integration easier by defining an interface/static method that classes can implement to create their own type information. That gives users an easy extension point.

Custom integrated types need to be checked in `getForObject`, `getForClass` and `validateInput`. If we also want to support custom integrated types with generics `createTypeInfoWithTypeHierarchy` needs modifications, too.