[SOLR-1005] DoubleMetaphone Filter Produces NullpointerException on zero-length token

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.4
• Component/s: Schema and Analysis

Environment

jdk 1.6.10, tomcat 6.x

• Assignee: Otis Gospodnetic
• Reporter: Michael Henson
• Created: 05/Feb/09 02:48
• Updated: 06/Feb/09 21:05
• Resolved: 06/Feb/09 21:05

Description

If any token given to the DoubleMetaphoneFilter is empty (Token exists, 0 length), then the encoder will return null instead of a metaphone encoded string. The current code assumes that there will always be a valid object returned.

Proposed solution: Make sure 0-length tokens are skipped at the top branch where the code checks whether or not we have a Token object at all.