[OAK-2531] Suggest field doesn't get stored if it has only one value

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.1.6
• Fix Version/s: 1.0.15, 1.1.7
• Component/s: lucene
• Assignee: Tommaso Teofili
• Reporter: Tommaso Teofili
• Created: 17/Feb/15 14:09
• Updated: 05/Jun/15 15:29
• Resolved: 17/Feb/15 14:12

Description

Because of LUCENE-5833 we have to do merge the :suggest field values in one single valued field, however in case there's only one text value for suggestions (e.g. a Lucene property index on jcr:primaryType) the value is not stored as LuceneIndexEditor uses the previously set field newPropertyField(FieldNames.SUGGEST, value, true, false) instead of FieldFactory.newSuggestField(f.stringValue()) causing the building of the suggester dictionary to fail with:

org.apache.jackrabbit.oak.plugins.index.lucene.util.SuggestHelper could not update the suggester
java.lang.IllegalArgumentException: need at least one suggestion
    at org.apache.lucene.search.suggest.analyzing.FreeTextSuggester.build(FreeTextSuggester.java:338)
    at org.apache.lucene.search.suggest.analyzing.FreeTextSuggester.build(FreeTextSuggester.java:278)
    at org.apache.lucene.search.suggest.Lookup.build(Lookup.java:165)
    at org.apache.jackrabbit.oak.plugins.index.lucene.util.SuggestHelper.updateSuggester(SuggestHelper.java:64)
    at org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndexEditorContext.updateSuggester(LuceneIndexEditorContext.java:188)