SignificantTermsHeuristicModule.java

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 * this work for additional information regarding copyright
 * ownership. Elasticsearch 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
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package org.elasticsearch.search.aggregations.bucket.significant.heuristics;

import com.google.common.collect.Lists;

import org.elasticsearch.common.inject.AbstractModule;
import org.elasticsearch.common.inject.multibindings.Multibinder;

import java.util.List;


public class SignificantTermsHeuristicModule extends AbstractModule {

    private List<Class<? extends SignificanceHeuristicParser>> parsers = Lists.newArrayList();

    public SignificantTermsHeuristicModule() {
        registerParser(JLHScore.JLHScoreParser.class);
        registerParser(PercentageScore.PercentageScoreParser.class);
        registerParser(MutualInformation.MutualInformationParser.class);
        registerParser(GND.GNDParser.class);
        registerParser(ChiSquare.ChiSquareParser.class);
    }

    public void registerParser(Class<? extends SignificanceHeuristicParser> parser) {
        parsers.add(parser);
    }

    @Override
    protected void configure() {
        Multibinder<SignificanceHeuristicParser> parserMapBinder = Multibinder.newSetBinder(binder(), SignificanceHeuristicParser.class);
        for (Class<? extends SignificanceHeuristicParser> clazz : parsers) {
            parserMapBinder.addBinding().to(clazz);
        }
        bind(SignificanceHeuristicParserMapper.class);
    }
}