Examples with Explanation org.apache.lucene.search.Explanation used on opensource projects

Example 26 with Explanation

use of org.apache.lucene.search.Explanation in project lucene-solr by apache.

the class ShapeAreaValueSource method getValues.

@Override
public FunctionValues getValues(Map context, LeafReaderContext readerContext) throws IOException {
    final FunctionValues shapeValues = shapeValueSource.getValues(context, readerContext);
    return new DoubleDocValues(this) {

        @Override
        public double doubleVal(int doc) throws IOException {
            Shape shape = (Shape) shapeValues.objectVal(doc);
            if (shape == null || shape.isEmpty())
                //or NaN?
                return 0;
            //   assuming ctx.isGeo()
            return shape.getArea(geoArea ? ctx : null) * multiplier;
        }

        @Override
        public boolean exists(int doc) throws IOException {
            return shapeValues.exists(doc);
        }

        @Override
        public Explanation explain(int doc) throws IOException {
            Explanation exp = super.explain(doc);
            List<Explanation> details = new ArrayList<>(Arrays.asList(exp.getDetails()));
            details.add(shapeValues.explain(doc));
            return Explanation.match(exp.getValue(), exp.getDescription(), details);
        }
    };
}

Example 27 with Explanation

use of org.apache.lucene.search.Explanation in project lucene-solr by apache.

the class SolrPluginUtils method explanationToNamedList.

public static NamedList<Object> explanationToNamedList(Explanation e) {
    NamedList<Object> out = new SimpleOrderedMap<>();
    out.add("match", e.isMatch());
    out.add("value", e.getValue());
    out.add("description", e.getDescription());
    Explanation[] details = e.getDetails();
    // short circut out
    if (0 == details.length)
        return out;
    List<NamedList<Object>> kids = new ArrayList<>(details.length);
    for (Explanation d : details) {
        kids.add(explanationToNamedList(d));
    }
    out.add("details", kids);
    return out;
}

Example 28 with Explanation

use of org.apache.lucene.search.Explanation in project lucene-solr by apache.

the class SolrPluginUtils method getExplanations.

/**
   * Generates an NamedList of Explanations for each item in a list of docs.
   *
   * @param query The Query you want explanations in the context of
   * @param docs The Documents you want explained relative that query
   */
public static NamedList<Explanation> getExplanations(Query query, DocList docs, SolrIndexSearcher searcher, IndexSchema schema) throws IOException {
    NamedList<Explanation> explainList = new SimpleOrderedMap<>();
    DocIterator iterator = docs.iterator();
    for (int i = 0; i < docs.size(); i++) {
        int id = iterator.nextDoc();
        Document doc = searcher.doc(id);
        String strid = schema.printableUniqueKey(doc);
        explainList.add(strid, searcher.explain(query, id));
    }
    return explainList;
}

Example 29 with Explanation

use of org.apache.lucene.search.Explanation in project lucene-solr by apache.

the class TestClassicSimilarity method testNormEncodingBackwardCompatibility.

public void testNormEncodingBackwardCompatibility() throws IOException {
    Similarity similarity = new ClassicSimilarity();
    for (int indexCreatedVersionMajor : new int[] { Version.LUCENE_6_0_0.major, Version.LATEST.major }) {
        for (int length : new int[] { 1, 4, 16 }) {
            // these length values are encoded accurately on both cases
            Directory dir = newDirectory();
            // set the version on the directory
            new SegmentInfos(indexCreatedVersionMajor).commit(dir);
            IndexWriter w = new IndexWriter(dir, newIndexWriterConfig().setSimilarity(similarity));
            Document doc = new Document();
            String value = IntStream.range(0, length).mapToObj(i -> "b").collect(Collectors.joining(" "));
            doc.add(new TextField("foo", value, Store.NO));
            w.addDocument(doc);
            IndexReader reader = DirectoryReader.open(w);
            IndexSearcher searcher = newSearcher(reader);
            searcher.setSimilarity(similarity);
            Explanation expl = searcher.explain(new TermQuery(new Term("foo", "b")), 0);
            Explanation fieldNorm = findExplanation(expl, "fieldNorm");
            assertNotNull(fieldNorm);
            assertEquals(fieldNorm.toString(), 1 / Math.sqrt(length), fieldNorm.getValue(), 0f);
            w.close();
            reader.close();
            dir.close();
        }
    }
}

Example 30 with Explanation

use of org.apache.lucene.search.Explanation in project lucene-solr by apache.

the class ExpressionRescorer method explain.

@Override
public Explanation explain(IndexSearcher searcher, Explanation firstPassExplanation, int docID) throws IOException {
    Explanation superExpl = super.explain(searcher, firstPassExplanation, docID);
    List<LeafReaderContext> leaves = searcher.getIndexReader().leaves();
    int subReader = ReaderUtil.subIndex(docID, leaves);
    LeafReaderContext readerContext = leaves.get(subReader);
    int docIDInSegment = docID - readerContext.docBase;
    return expression.getDoubleValuesSource(bindings).explain(readerContext, docIDInSegment, superExpl);
}