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optimize bool filter for single must clause or single should clause

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This commit is contained in:
Shay Banon 2012-01-30 17:11:45 +02:00
parent 06da379f50
commit 639a03fbe0
1 changed files with 8 additions and 0 deletions

8
src/main/java/org/elasticsearch/common/lucene/search/XBooleanFilter.java

@ -70,6 +70,14 @@ public class XBooleanFilter extends Filter {
public DocIdSet getDocIdSet(IndexReader reader) throws IOException { public DocIdSet getDocIdSet(IndexReader reader) throws IOException {
FixedBitSet res = null; FixedBitSet res = null;
if (mustFilters == null && notFilters == null && shouldFilters != null && shouldFilters.size() == 1) {
return shouldFilters.get(0).getDocIdSet(reader);
}
if (shouldFilters == null && notFilters == null && mustFilters != null && mustFilters.size() == 1) {
return mustFilters.get(0).getDocIdSet(reader);
}
if (shouldFilters != null) { if (shouldFilters != null) {
for (int i = 0; i < shouldFilters.size(); i++) { for (int i = 0; i < shouldFilters.size(); i++) {
final DocIdSet disi = getDISI(shouldFilters, i, reader); final DocIdSet disi = getDISI(shouldFilters, i, reader);