org.apache.lucene.queries.spans.SpanCollector Maven / Gradle / Ivy
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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,
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* See the License for the specific language governing permissions and
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*/
package org.apache.lucene.queries.spans;
import java.io.IOException;
import org.apache.lucene.index.PostingsEnum;
import org.apache.lucene.index.Term;
/**
* An interface defining the collection of postings information from the leaves of a {@link Spans}
*
* @lucene.experimental
*/
public interface SpanCollector {
/**
* Collect information from postings
*
* @param postings a {@link PostingsEnum}
* @param position the position of the PostingsEnum
* @param term the {@link Term} for this postings list
* @throws IOException on error
*/
public void collectLeaf(PostingsEnum postings, int position, Term term) throws IOException;
/** Call to indicate that the driving Spans has moved to a new position */
public void reset();
}