[FLINK-12412] Allow ListTypeInfo used for java.util.List and MapTypeInfo used for java.util.Map

• Type: New Feature
• Status: In Progress
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 1.9.0
• Fix Version/s: 1.20.0
• Component/s: API / Type Serialization System
• Labels: auto-deprioritized-major auto-unassigned pull-request-available starer
• Assignee: Unassigned
• Reporter: YangFei
• Created: 06/May/19 10:59
• Updated: 14/Mar/24 07:36

Description

 

// code placeholder
public static class UserBehavior { 
  public long userId;
  public long itemId;  
  public int categoryId; 
  public long timestamp;  
  public List<String> comments; 
}

public static void main(String[] args) throws Exception { 
  PojoTypeInfo<UserBehavior> pojoType = (PojoTypeInfo<UserBehavior>) TypeExtractor.createTypeInfo(UserBehavior.class); 
}

 

The filed comments in UserBehavior will be extracted by TypeExtractor to GenericType .

I think it can be extracted to ListTypeInfo .

This would be a big improvement as in many cases classes including List or Map

Issue Links

• links to: GitHub Pull Request #8351