[GEARPUMP-48] Improve Java interoperability

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.8.2
• Component/s: streaming
• Assignee: Unassigned
• Reporter: Manu Zhang
• Created: 20/Apr/16 04:58
• Updated: 05/Sep/16 07:30
• Resolved: 05/Sep/16 07:30

Description

migrated from https://github.com/gearpump/gearpump/issues/1967 and https://github.com/gearpump/gearpump/issues/1938.

The current user / developer interface is not friendly to Java users / developers. For example,

• private[package] in Scala is public in Java
• List in Scala is constructed like "$colon$colon$.MODULE$.apply"
• constants of companion objects in Scala is accessed like "Foo$MODULE$.constant()"

We should improve the codebase, and probably add some tests to ensure the interoperability for all public interfaces and a guide to follow.