[CXF-6412] MessageBodyReader and MessageBodyWritter should follow different sorting rule

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Implemented
• Affects Version/s: 3.0.4, 2.7.15, 3.0.5
• Fix Version/s: 3.1.1, 3.0.6
• Component/s: JAX-RS
• Estimated Complexity: Unknown
• Flags: Patch
• Assignee: Sergey Beryozkin
• Reporter: Iris Ding
• Created: 19/May/15 13:08
• Updated: 14/Oct/16 14:25
• Resolved: 20/May/15 09:34

Description

According to JSR-339 spec, section 4.2.1 and 4.2.2, we need follow different sorting rule for MessageBodyReader and MessageBodyWritter:

For MessageBodyReader, it is:
<h3> 2. Identify the Java type of the parameter whose value will be mapped from the entity body. Section 3.7</h3>
describes how the Java method is chosen.
<h3>3. Select the set of MessageBodyReader classes that support the media type of the request, see Section 4.2.3. </h3>

For MessageBodyWritter, it is:
<h3>4. Sort the selected MessageBodyWriter providers with a primary key of generic type where providers whose generic type is the nearest superclass of the object class are sorted first and a secondary key of media type (see Section 4.2.3).</h3>

But in our implementation, we use the same sorting rule:
1. compareClasses() ->compareSortedMediaTypes()

This caused an issue in https://issues.apache.org/jira/browse/CXF-6380.

Actually we need to adjust the MessageBodyReader sorting method.