[JOHNZON-145] Improve FallbackConverter error reporting

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.1.4
• Fix Version/s: 1.1.5
• Component/s: Mapper
• Assignee: Mark Struberg
• Reporter: Mark Struberg
• Created: 10/Nov/17 08:44
• Updated: 14/Nov/17 08:23
• Resolved: 10/Nov/17 11:00

Description

Currently the MappingParserImpl FallbackConverter does not have much knowledge about the type.
This leads to funny exceptions without much info about the JSON and the Type:

Caused by: org.apache.johnzon.mapper.MapperException: Using fallback converter, this only works in write mode but not in read. Please register a custom converter to do so.
	at org.apache.johnzon.mapper.MappingParserImpl$FallbackConverter.fromString(MappingParserImpl.java:776) ~[johnzon-mapper-1.1.5-SNAPSHOT.jar:1.1.5-SNAPSHOT]
	at org.apache.johnzon.mapper.internal.ConverterAdapter.to(ConverterAdapter.java:37) ~[johnzon-mapper-1.1.5-SNAPSHOT.jar:1.1.5-SNAPSHOT]
	at org.apache.johnzon.mapper.internal.ConverterAdapter.to(ConverterAdapter.java:24) ~[johnzon-mapper-1.1.5-SNAPSHOT.jar:1.1.5-SNAPSHOT]