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* the Apache License, Version 2.0 (the "License"); you may
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* 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
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package org.elasticsearch.search.suggest;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.util.CharsRefBuilder;
import org.elasticsearch.common.text.Text;
import org.elasticsearch.index.query.QueryShardContext;
import java.io.IOException;
import java.util.Locale;
import java.util.Map;
public class CustomSuggester extends Suggester<CustomSuggester.CustomSuggestionsContext> {
public static final CustomSuggester INSTANCE = new CustomSuggester();
// This is a pretty dumb implementation which returns the original text + fieldName + custom config option + 12 or 123
@Override
public Suggest.Suggestion<? extends Suggest.Suggestion.Entry<? extends Suggest.Suggestion.Entry.Option>> innerExecute(String name, CustomSuggestionsContext suggestion, IndexSearcher searcher, CharsRefBuilder spare) throws IOException {
// Get the suggestion context
String text = suggestion.getText().utf8ToString();
// create two suggestions with 12 and 123 appended
Suggest.Suggestion<Suggest.Suggestion.Entry<Suggest.Suggestion.Entry.Option>> response = new Suggest.Suggestion<>(name, suggestion.getSize());
String firstSuggestion = String.format(Locale.ROOT, "%s-%s-%s-%s", text, suggestion.getField(), suggestion.options.get("suffix"), "12");
Suggest.Suggestion.Entry<Suggest.Suggestion.Entry.Option> resultEntry12 = new Suggest.Suggestion.Entry<>(new Text(firstSuggestion), 0, text.length() + 2);
response.addTerm(resultEntry12);
String secondSuggestion = String.format(Locale.ROOT, "%s-%s-%s-%s", text, suggestion.getField(), suggestion.options.get("suffix"), "123");
Suggest.Suggestion.Entry<Suggest.Suggestion.Entry.Option> resultEntry123 = new Suggest.Suggestion.Entry<>(new Text(secondSuggestion), 0, text.length() + 3);
response.addTerm(resultEntry123);
return response;
}
public static class CustomSuggestionsContext extends SuggestionSearchContext.SuggestionContext {
public Map<String, Object> options;
public CustomSuggestionsContext(QueryShardContext context, Map<String, Object> options) {
super(new CustomSuggester(), context);
this.options = options;
}
}
}