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FieldCacheImpl#getTermsIndex: throw an exception when the field is not indexed and has unsorted doc values. 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene4547@1438594 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Adrien Grand 2013-01-25 17:06:23 +00:00
parent b7bcad0360
commit f7db724186
1 changed files with 7 additions and 0 deletions
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7
lucene/core/src/java/org/apache/lucene/search/FieldCacheImpl.java
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@ -1036,6 +1036,13 @@ class FieldCacheImpl implements FieldCache {
// per-thread by SegmentReader):
return valuesIn;
} else {
final FieldInfo info = reader.getFieldInfos().fieldInfo(field);
if (info != null && !info.isIndexed() && info.hasDocValues()) {
// we don't try to build a sorted instance from numeric/binary doc
// values because dedup can be very costly
throw new IllegalArgumentException("Cannot get terms index for \"" + field
+ "\": it isn't indexed and doesn't have sorted doc values");
}
return (SortedDocValues) caches.get(SortedDocValues.class).get(reader, new CacheKey(field, acceptableOverheadRatio), false);
}
}