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LUCENE-1630: make Query.createQueryWeight optional, with default impl to wrap existing createWeight 

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@788347 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Michael McCandless 2009-06-25 13:13:05 +00:00
parent 9e49053ec1
commit ec88b1578d
1 changed files with 9 additions and 3 deletions
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12
src/java/org/apache/lucene/search/Query.java
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@ -88,18 +88,24 @@ public abstract class Query implements java.io.Serializable, Cloneable {
* @deprecated use {@link #createQueryWeight(Searcher)} instead.
*/
protected Weight createWeight(Searcher searcher) throws IOException {
return createQueryWeight(searcher);
throw new UnsupportedOperationException();
}
/**
* Expert: Constructs an appropriate {@link QueryWeight} implementation for
* this query.
*
* <p>
* Only implemented by primitive queries, which re-write to themselves.
* <p>
* <b>NOTE:</b> in 3.0 this method will throw
* {@link UnsupportedOperationException}. It is implemented now by calling
* {@link #createWeight(Searcher)} for backwards compatibility, for
* {@link Query} implementations that did not override it yet (but did
* override {@link #createWeight(Searcher)}).
*/
// TODO (3.0): change to throw UnsupportedOperationException.
public QueryWeight createQueryWeight(Searcher searcher) throws IOException {
throw new UnsupportedOperationException();
return new QueryWeightWrapper(weight(searcher));
}
/**