[STANBOL-1342] NPE in EntityCoMentionEngine if no LabelTokenizer is available for the language of the processed Text

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.12.0
• Fix Version/s: 1.0.0, 0.12.1
• Component/s: Enhancement Engines
• Assignee: Rupert Westenthaler
• Reporter: Rupert Westenthaler
• Created: 22/May/14 08:38
• Updated: 23/May/14 11:53
• Resolved: 23/May/14 11:53

Description

The ContentItemMentionBuilder#registerTextAnnotation(..) currently runs into a NPE in case the parsed LabelTokenizer does not support the language of the in-memory entity index.

This indicates two problems

(1) the registerTextAnnotation(..) should not throw a NPE but instead check if the tokens are NULL
(2) the fact that the LabelTokenizer indicates that the wrong service is injected to the EntityCoMentionEngine. Because the MainLabelTokenizer - that registers itself with a service.ranking=Intever.MAX_VALUE - would not return NULL