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Added (simple) SpanQuery support - matches any terms declared in Spans - proper impl should check for distances 

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@208673 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Mark Harwood 2005-06-30 20:09:58 +00:00
parent c223db7a29
commit 7894a0c0c0
1 changed files with 25 additions and 9 deletions
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34
contrib/highlighter/src/java/org/apache/lucene/search/highlight/QueryTermExtractor.java
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@ -16,7 +16,9 @@ package org.apache.lucene.search.highlight;
*/
import java.io.IOException;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.Term;
@ -25,6 +27,7 @@ import org.apache.lucene.search.BooleanQuery;
import org.apache.lucene.search.PhraseQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.search.spans.SpanNearQuery;
/**
* Utility class used to extract the terms used in a query, plus any weights.
@ -101,15 +104,9 @@ public final class QueryTermExtractor
else
if (query instanceof TermQuery)
getTermsFromTermQuery((TermQuery) query, terms);
// else
// if ((query instanceof PrefixQuery)
// || (query instanceof RangeQuery)
// || (query instanceof MultiTermQuery))
// {
// //client should call rewrite BEFORE calling highlighter
// // Query expandedQuery = rewrite(reader, query);
// // getTerms(reader, expandedQuery, terms, prohibited);
// }
else
if(query instanceof SpanNearQuery)
getTermsFromSpanNearQuery((SpanNearQuery) query, terms);
}
private static final void getTermsFromBooleanQuery(BooleanQuery query, HashSet terms, boolean prohibited)
@ -140,5 +137,24 @@ public final class QueryTermExtractor
terms.add(new WeightedTerm(query.getBoost(),query.getTerm().text()));
}
private static final void getTermsFromSpanNearQuery(SpanNearQuery query, HashSet terms){
Collection queryTerms = query.getTerms();
for(Iterator iterator = queryTerms.iterator(); iterator.hasNext();){
// break it out for debugging.
Term term = (Term) iterator.next();
String text = term.text();
terms.add(new WeightedTerm(query.getBoost(), text));
}
}
}