BoostingTermQuery#defaultTermBoost
----------------------------------
Key: LUCENE-1155
URL: https://issues.apache.org/jira/browse/LUCENE-1155
Project: Lucene - Java
Issue Type: Improvement
Components: Search
Reporter: Karl Wettin
Priority: Trivial
This patch allows a null payload to mean something different than 1f.
(I have this use case where 99% of my tokens share the same rather large token
position payload boost.)
{code}
+++ src/java/org/apache/lucene/search/payloads/BoostingTermQuery.java
(working copy)
@@ -41,11 +41,16 @@
*/
public class BoostingTermQuery extends SpanTermQuery{
+ private Float defaultTermBoost = null;
public BoostingTermQuery(Term term) {
super(term);
}
+ public BoostingTermQuery(Term term, Float defaultTermBoost) {
+ super(term);
+ this.defaultTermBoost = defaultTermBoost;
+ }
protected Weight createWeight(Searcher searcher) throws IOException {
return new BoostingTermWeight(this, searcher);
@@ -107,7 +112,9 @@
payload = positions.getPayload(payload, 0);
payloadScore += similarity.scorePayload(term.field(), payload, 0,
positions.getPayloadLength());
payloadsSeen++;
-
+ } else if (defaultTermBoost != null) {
+ payloadScore += defaultTermBoost;
+ payloadsSeen++;
} else {
//zero out the payload?
}
@@ -146,7 +153,14 @@
}
+ public Float getDefaultTermBoost() {
+ return defaultTermBoost;
+ }
+ public void setDefaultTermBoost(Float defaultTermBoost) {
+ this.defaultTermBoost = defaultTermBoost;
+ }
+
public boolean equals(Object o) {
if (!(o instanceof BoostingTermQuery))
return false;
{code}
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