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https://issues.apache.org/jira/browse/LUCENE-2649?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12910628#action_12910628
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Ryan McKinley commented on LUCENE-2649:
---------------------------------------
Uwe: "For DocTerms the approach is not needed..."
Ya I realized this after looking at the patch I first submitted. In the first
patch, the cache holds a CachedObject rather then just an Object. In the
second, I changed back to just an Object so it does not need to wrap the
DocTerms or DocTermsIndex
For the RangeFilter, with optional Bits calculation, that could would look
somethign like:
{code:java}
LongValues cached = FieldCache.DEFAULT.getLongValues(reader, field,
(FieldCache.LongParser) parser);
final long[] values = cached.values;
if( cached.valid == null ) {
// ignore deleted docs if range doesn't contain 0
return new FieldCacheDocIdSet(reader, !(inclusiveLowerPoint <= 0L &&
inclusiveUpperPoint >= 0L)) {
@Override
boolean matchDoc(int doc) {
return values[doc] >= inclusiveLowerPoint && values[doc] <=
inclusiveUpperPoint;
}
};
}
else {
final Bits valid = cached.valid;
return new FieldCacheDocIdSet(reader, true) {
@Override
boolean matchDoc(int doc) {
return valid.get(doc) && values[doc] >= inclusiveLowerPoint &&
values[doc] <= inclusiveUpperPoint;
}
};
}
{code}
> FieldCache should include a BitSet for matching docs
> ----------------------------------------------------
>
> Key: LUCENE-2649
> URL: https://issues.apache.org/jira/browse/LUCENE-2649
> Project: Lucene - Java
> Issue Type: Improvement
> Reporter: Ryan McKinley
> Fix For: 4.0
>
> Attachments: LUCENE-2649-FieldCacheWithBitSet.patch,
> LUCENE-2649-FieldCacheWithBitSet.patch
>
>
> The FieldCache returns an array representing the values for each doc.
> However there is no way to know if the doc actually has a value.
> This should be changed to return an object representing the values *and* a
> BitSet for all valid docs.
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