[NETBEANS-2338] Type inference failure with generics and lambdas

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 10.0
• Component/s: java - Compiler, java - Editor
• Assignee: Unassigned
• Reporter: Yordan Gigov
• Created: 03/Apr/19 07:11
• Updated: 03/Apr/19 07:11

Description

In the attached example, the compiler detects types properly in the

listMapperCollector()

method, but not in the

listMapperCollector(Comparator<ID> sorter)

method, where it fails on determining the type of e in

e -> e.getId()

on line 31.

The code is for Java 8, and compiles normally with OpenJDK 8.

Aside from one or two exceptions (because of the types of their primary keys), all of my JPA entity classes implement this interface.