[LUCENE-4782] Let the NaiveBayes classifier have a fallback docCount method if codec doesn't support Terms#docCount()

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.2, 6.0
• Component/s: modules/classification
• Lucene Fields: New
• Assignee: Tommaso Teofili
• Reporter: Tommaso Teofili
• Created: 20/Feb/13 14:00
• Updated: 28/Aug/22 13:39
• Resolved: 20/Feb/13 15:08

Description

In SimpleNaiveBayesClassifier docsWithClassSize variable is initialized to MultiFields.getTerms(this.atomicReader, this.classFieldName).getDocCount() which may be -1 if the codec doesn't support doc counts, therefore there should be an alternative way to initialize such a variable with the documents count.