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Elasticsearch subproject :server
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.search.suggest;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.util.CharsRefBuilder;
import java.io.IOException;
public abstract class Suggester {
protected abstract Suggest.Suggestion> innerExecute(
String name,
T suggestion,
IndexSearcher searcher,
CharsRefBuilder spare
) throws IOException;
protected abstract Suggest.Suggestion> emptySuggestion(
String name,
T suggestion,
CharsRefBuilder spare
) throws IOException;
public Suggest.Suggestion> execute(
String name,
T suggestion,
IndexSearcher searcher,
CharsRefBuilder spare
) throws IOException {
// we only want to output an empty suggestion on empty shards
if (searcher.getIndexReader().numDocs() == 0) {
return emptySuggestion(name, suggestion, spare);
}
return innerExecute(name, suggestion, searcher, spare);
}
}