public interface Rescorer
QueryRescorer
because it is
fairly well behaved and documents that tradeoffs that it is making. There
is also an ExampleRescorer
that is worth looking at.Modifier and Type | Method and Description |
---|---|
org.apache.lucene.search.Explanation |
explain(int topLevelDocId,
org.apache.lucene.search.IndexSearcher searcher,
RescoreContext rescoreContext,
org.apache.lucene.search.Explanation sourceExplanation)
Executes an
Explanation phase on the rescorer. |
void |
extractTerms(org.apache.lucene.search.IndexSearcher searcher,
RescoreContext rescoreContext,
java.util.Set<org.apache.lucene.index.Term> termsSet)
Extracts all terms needed to execute this
Rescorer . |
org.apache.lucene.search.TopDocs |
rescore(org.apache.lucene.search.TopDocs topDocs,
org.apache.lucene.search.IndexSearcher searcher,
RescoreContext rescoreContext)
Modifies the result of the previously executed search (
TopDocs )
in place based on the given RescoreContext . |
org.apache.lucene.search.TopDocs rescore(org.apache.lucene.search.TopDocs topDocs, org.apache.lucene.search.IndexSearcher searcher, RescoreContext rescoreContext) throws java.io.IOException
TopDocs
)
in place based on the given RescoreContext
.topDocs
- the result of the previously executed searchsearcher
- the searcher used for this search. This will never be null
.rescoreContext
- the RescoreContext
. This will never be null
java.io.IOException
- if an IOException
occurs during rescoringorg.apache.lucene.search.Explanation explain(int topLevelDocId, org.apache.lucene.search.IndexSearcher searcher, RescoreContext rescoreContext, org.apache.lucene.search.Explanation sourceExplanation) throws java.io.IOException
Explanation
phase on the rescorer.topLevelDocId
- the global / top-level document ID to explainsearcher
- the searcher used for this search. This will never be null
.rescoreContext
- context for this rescorersourceExplanation
- explanation of the source of the documents being fed into this rescorejava.io.IOException
- if an IOException
occursvoid extractTerms(org.apache.lucene.search.IndexSearcher searcher, RescoreContext rescoreContext, java.util.Set<org.apache.lucene.index.Term> termsSet) throws java.io.IOException
Rescorer
. This method
is executed in a distributed frequency collection roundtrip for
SearchType.DFS_QUERY_THEN_FETCH
java.io.IOException