[GEODE-8256] The Jackson ObjectMapper used by a PdxInstance does not properly handle Java 8 Types

• Type: Bug
• Status: Open
• Priority: Blocker
• Resolution: Unresolved
• Affects Version/s: 1.9.2, 1.10.0, 1.11.0, 1.12.0
• Component/s: serialization
• Labels: JSON-PDX
• Assignee: Unassigned
• Reporter: John Blum
• Created: 16/Jun/20 00:19
• Updated: 30/Jun/21 22:39

Description

The Jackson ObjectMapper in the PdxInstanceImpl class (see here)is not properly configured.

Specifically, it cannot handle Java 8 types since these types are not included in Jackson 2, by default, primarily because Jackson 2 is based on Java 6 (not Java 8). However, that does not mean Jackson 2 cannot handle Java 8 types, when configured properly with extension modules.

To make matters worse, the ObjectMapper used by PDX, and specifically the PdxInstance implementation, violates the Open/Closed software design principle, so there is literally no way to modify (i.e. override/extend) the configuration of the ObjectMapper as required by the application.

See here for a test case demonstrating the issue.