FloatNestedSortingTests.java example

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package org.elasticsearch.index.search.nested;

import org.apache.lucene.document.SortedNumericDocValuesField;
import org.apache.lucene.index.IndexableField;
import org.apache.lucene.search.ConstantScoreQuery;
import org.apache.lucene.search.FieldDoc;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.Sort;
import org.apache.lucene.search.SortField;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.search.join.QueryBitSetProducer;
import org.apache.lucene.search.join.ScoreMode;
import org.apache.lucene.search.join.ToParentBlockJoinQuery;
import org.apache.lucene.util.NumericUtils;
import org.elasticsearch.common.lucene.search.Queries;
import org.elasticsearch.index.fielddata.IndexFieldData;
import org.elasticsearch.index.fielddata.IndexFieldData.XFieldComparatorSource;
import org.elasticsearch.index.fielddata.IndexFieldData.XFieldComparatorSource.Nested;
import org.elasticsearch.index.fielddata.IndexNumericFieldData;
import org.elasticsearch.index.fielddata.fieldcomparator.FloatValuesComparatorSource;
import org.elasticsearch.search.MultiValueMode;

import java.io.IOException;

import static org.hamcrest.Matchers.equalTo;

public class FloatNestedSortingTests extends DoubleNestedSortingTests {

    @Override
    protected String getFieldDataType() {
        return "float";
    }

    @Override
    protected IndexFieldData.XFieldComparatorSource createFieldComparator(String fieldName, MultiValueMode sortMode, Object missingValue, Nested nested) {
        IndexNumericFieldData fieldData = getForField(fieldName);
        return new FloatValuesComparatorSource(fieldData, missingValue, sortMode, nested);
    }

    @Override
    protected IndexableField createField(String name, int value) {
        return new SortedNumericDocValuesField(name, NumericUtils.floatToSortableInt(value));
    }

    protected void assertAvgScoreMode(Query parentFilter, IndexSearcher searcher, IndexFieldData.XFieldComparatorSource innerFieldComparator) throws IOException {
        MultiValueMode sortMode = MultiValueMode.AVG;
        Query childFilter = Queries.not(parentFilter);
        XFieldComparatorSource nestedComparatorSource = createFieldComparator("field2", sortMode, -127, createNested(searcher, parentFilter, childFilter));
        Query query = new ToParentBlockJoinQuery(new ConstantScoreQuery(childFilter), new QueryBitSetProducer(parentFilter), ScoreMode.None);
        Sort sort = new Sort(new SortField("field2", nestedComparatorSource));
        TopDocs topDocs = searcher.search(query, 5, sort);
        assertThat(topDocs.totalHits, equalTo(7));
        assertThat(topDocs.scoreDocs.length, equalTo(5));
        assertThat(topDocs.scoreDocs[0].doc, equalTo(11));
        assertThat(((Number) ((FieldDoc) topDocs.scoreDocs[0]).fields[0]).intValue(), equalTo(2));
        assertThat(topDocs.scoreDocs[1].doc, equalTo(7));
        assertThat(((Number) ((FieldDoc) topDocs.scoreDocs[1]).fields[0]).intValue(), equalTo(2));
        assertThat(topDocs.scoreDocs[2].doc, equalTo(3));
        assertThat(((Number) ((FieldDoc) topDocs.scoreDocs[2]).fields[0]).intValue(), equalTo(3));
        assertThat(topDocs.scoreDocs[3].doc, equalTo(15));
        assertThat(((Number) ((FieldDoc) topDocs.scoreDocs[3]).fields[0]).intValue(), equalTo(3));
        assertThat(topDocs.scoreDocs[4].doc, equalTo(19));
        assertThat(((Number) ((FieldDoc) topDocs.scoreDocs[4]).fields[0]).intValue(), equalTo(3));
    }

}