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KnnCollectorManager.java
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/
KnnCollectorManager.java
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.lucene.search.knn;
import java.io.IOException;
import org.apache.lucene.index.LeafReaderContext;
import org.apache.lucene.search.KnnCollector;
/**
* KnnCollectorManager responsible for creating {@link KnnCollector} instances. Useful to create
* {@link KnnCollector} instances that share global state across leaves, such a global queue of
* results collected so far.
*/
public interface KnnCollectorManager {
/**
* Return a new {@link KnnCollector} instance.
*
* @param visitedLimit the maximum number of nodes that the search is allowed to visit
* @param context the leaf reader context
*/
KnnCollector newCollector(int visitedLimit, LeafReaderContext context) throws IOException;
}