JSON WS API mess method parameters if one of overloaded methods has parameter named userId of type long

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.1.30 EE GA3, 7.0.0 M3
• Fix Version/s: 7.0.0 M2
• Component/s: Web Services, Web Services > JSON WS
• Labels: None
• Story Points: 6
• Fix Priority: 3
• OS:
  CentOS 6
• JDK:
  Oracle Sun JDK 6
• Application Servers:
  Apache Tomcat 7.0
• Browsers:
  Chrome (latest)
• Databases:
  MySQL 5.6
• Device Type:
  Desktop
• Git Pull Request: https://github.com/hhuijser/liferay-portal/pull/2157

JSON WS adds a userId parameter as the authenticating user. So when we have 2 methods that are overloaded with one method having userId like...

PLEASE CHECK: LRDCOM-11968 for details. Here is the description through the example.

Let's say we have the following API methods:

foo(a)
foo(a,b,c)
foo(a,b,d)

`c` is default parameter and it is always set. When calling (sudo-call):

/foo/a,b,d

it may happens that you can't call the `foo(a,b,d)` but only `foo(a,b,c)`, since c is also available.

This fix tries to do the matching first without the default parameters. So the above call will always find the foo(a,b,d) method!

What happens when this is called?:

/foo/a,b

Previously, this call would invoke foo(a,b,c), since c is default parameter. However, after this change the foo(a) will be called, as there is matching method without default parameters - and that is the first match.