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

Example 1 with Sort

use of org.apache.lucene.search.Sort in project elasticsearch by elastic.

the class AbstractStringFieldDataTestCase method testNestedSorting.

public void testNestedSorting(MultiValueMode sortMode) throws IOException {
    final String[] values = new String[randomIntBetween(2, 20)];
    for (int i = 0; i < values.length; ++i) {
        values[i] = TestUtil.randomSimpleString(random());
    }
    final int numParents = scaledRandomIntBetween(10, 3072);
    List<Document> docs = new ArrayList<>();
    FixedBitSet parents = new FixedBitSet(64);
    for (int i = 0; i < numParents; ++i) {
        docs.clear();
        final int numChildren = randomInt(4);
        for (int j = 0; j < numChildren; ++j) {
            final Document child = new Document();
            final int numValues = randomInt(3);
            for (int k = 0; k < numValues; ++k) {
                final String value = RandomPicks.randomFrom(random(), values);
                addField(child, "text", value);
            }
            docs.add(child);
        }
        final Document parent = new Document();
        parent.add(new StringField("type", "parent", Store.YES));
        final String value = RandomPicks.randomFrom(random(), values);
        if (value != null) {
            addField(parent, "text", value);
        }
        docs.add(parent);
        int bit = parents.prevSetBit(parents.length() - 1) + docs.size();
        parents = FixedBitSet.ensureCapacity(parents, bit);
        parents.set(bit);
        writer.addDocuments(docs);
        if (randomInt(10) == 0) {
            writer.commit();
        }
    }
    DirectoryReader directoryReader = DirectoryReader.open(writer);
    directoryReader = ElasticsearchDirectoryReader.wrap(directoryReader, new ShardId(indexService.index(), 0));
    IndexSearcher searcher = new IndexSearcher(directoryReader);
    IndexFieldData<?> fieldData = getForField("text");
    final Object missingValue;
    switch(randomInt(4)) {
        case 0:
            missingValue = "_first";
            break;
        case 1:
            missingValue = "_last";
            break;
        case 2:
            missingValue = new BytesRef(RandomPicks.randomFrom(random(), values));
            break;
        default:
            missingValue = new BytesRef(TestUtil.randomSimpleString(random()));
            break;
    }
    Query parentFilter = new TermQuery(new Term("type", "parent"));
    Query childFilter = Queries.not(parentFilter);
    Nested nested = createNested(searcher, parentFilter, childFilter);
    BytesRefFieldComparatorSource nestedComparatorSource = new BytesRefFieldComparatorSource(fieldData, missingValue, sortMode, nested);
    ToParentBlockJoinQuery query = new ToParentBlockJoinQuery(new ConstantScoreQuery(childFilter), new QueryBitSetProducer(parentFilter), ScoreMode.None);
    Sort sort = new Sort(new SortField("text", nestedComparatorSource));
    TopFieldDocs topDocs = searcher.search(query, randomIntBetween(1, numParents), sort);
    assertTrue(topDocs.scoreDocs.length > 0);
    BytesRef previous = null;
    for (int i = 0; i < topDocs.scoreDocs.length; ++i) {
        final int docID = topDocs.scoreDocs[i].doc;
        assertTrue("expected " + docID + " to be a parent", parents.get(docID));
        BytesRef cmpValue = null;
        for (int child = parents.prevSetBit(docID - 1) + 1; child < docID; ++child) {
            String[] sVals = searcher.doc(child).getValues("text");
            final BytesRef[] vals;
            if (sVals.length == 0) {
                vals = new BytesRef[0];
            } else {
                vals = new BytesRef[sVals.length];
                for (int j = 0; j < vals.length; ++j) {
                    vals[j] = new BytesRef(sVals[j]);
                }
            }
            for (BytesRef value : vals) {
                if (cmpValue == null) {
                    cmpValue = value;
                } else if (sortMode == MultiValueMode.MIN && value.compareTo(cmpValue) < 0) {
                    cmpValue = value;
                } else if (sortMode == MultiValueMode.MAX && value.compareTo(cmpValue) > 0) {
                    cmpValue = value;
                }
            }
        }
        if (cmpValue == null) {
            if ("_first".equals(missingValue)) {
                cmpValue = new BytesRef();
            } else if ("_last".equals(missingValue) == false) {
                cmpValue = (BytesRef) missingValue;
            }
        }
        if (previous != null && cmpValue != null) {
            assertTrue(previous.utf8ToString() + "   /   " + cmpValue.utf8ToString(), previous.compareTo(cmpValue) <= 0);
        }
        previous = cmpValue;
    }
    searcher.getIndexReader().close();
}

Example 2 with Sort

use of org.apache.lucene.search.Sort in project elasticsearch by elastic.

the class AbstractStringFieldDataTestCase method testSortMissing.

public void testSortMissing(boolean first, boolean reverse) throws IOException {
    final String[] values = new String[randomIntBetween(2, 10)];
    for (int i = 1; i < values.length; ++i) {
        values[i] = TestUtil.randomUnicodeString(random());
    }
    final int numDocs = scaledRandomIntBetween(10, 3072);
    for (int i = 0; i < numDocs; ++i) {
        final String value = RandomPicks.randomFrom(random(), values);
        if (value == null) {
            writer.addDocument(new Document());
        } else {
            Document d = new Document();
            addField(d, "value", value);
            writer.addDocument(d);
        }
        if (randomInt(10) == 0) {
            writer.commit();
        }
    }
    final IndexFieldData indexFieldData = getForField("value");
    IndexSearcher searcher = new IndexSearcher(DirectoryReader.open(writer));
    XFieldComparatorSource comparator = indexFieldData.comparatorSource(first ? "_first" : "_last", MultiValueMode.MIN, null);
    TopFieldDocs topDocs = searcher.search(new MatchAllDocsQuery(), randomBoolean() ? numDocs : randomIntBetween(10, numDocs), new Sort(new SortField("value", comparator, reverse)));
    assertEquals(numDocs, topDocs.totalHits);
    BytesRef previousValue = first ? null : reverse ? UnicodeUtil.BIG_TERM : new BytesRef();
    for (int i = 0; i < topDocs.scoreDocs.length; ++i) {
        final String docValue = searcher.doc(topDocs.scoreDocs[i].doc).get("value");
        if (first && docValue == null) {
            assertNull(previousValue);
        } else if (!first && docValue != null) {
            assertNotNull(previousValue);
        }
        final BytesRef value = docValue == null ? null : new BytesRef(docValue);
        if (previousValue != null && value != null) {
            if (reverse) {
                assertTrue(previousValue.compareTo(value) >= 0);
            } else {
                assertTrue(previousValue.compareTo(value) <= 0);
            }
        }
        previousValue = value;
    }
    searcher.getIndexReader().close();
}

Example 3 with Sort

use of org.apache.lucene.search.Sort in project elasticsearch by elastic.

the class AbstractFieldDataImplTestCase method testSortMultiValuesFields.

public void testSortMultiValuesFields() throws Exception {
    fillExtendedMvSet();
    IndexFieldData indexFieldData = getForField("value");
    IndexSearcher searcher = new IndexSearcher(DirectoryReader.open(writer));
    TopFieldDocs topDocs = searcher.search(new MatchAllDocsQuery(), 10, new Sort(new SortField("value", indexFieldData.comparatorSource(null, MultiValueMode.MIN, null))));
    assertThat(topDocs.totalHits, equalTo(8));
    assertThat(topDocs.scoreDocs.length, equalTo(8));
    assertThat(topDocs.scoreDocs[0].doc, equalTo(7));
    assertThat(((BytesRef) ((FieldDoc) topDocs.scoreDocs[0]).fields[0]).utf8ToString(), equalTo("!08"));
    assertThat(topDocs.scoreDocs[1].doc, equalTo(0));
    assertThat(((BytesRef) ((FieldDoc) topDocs.scoreDocs[1]).fields[0]).utf8ToString(), equalTo("02"));
    assertThat(topDocs.scoreDocs[2].doc, equalTo(2));
    assertThat(((BytesRef) ((FieldDoc) topDocs.scoreDocs[2]).fields[0]).utf8ToString(), equalTo("03"));
    assertThat(topDocs.scoreDocs[3].doc, equalTo(3));
    assertThat(((BytesRef) ((FieldDoc) topDocs.scoreDocs[3]).fields[0]).utf8ToString(), equalTo("04"));
    assertThat(topDocs.scoreDocs[4].doc, equalTo(4));
    assertThat(((BytesRef) ((FieldDoc) topDocs.scoreDocs[4]).fields[0]).utf8ToString(), equalTo("06"));
    assertThat(topDocs.scoreDocs[5].doc, equalTo(6));
    assertThat(((BytesRef) ((FieldDoc) topDocs.scoreDocs[5]).fields[0]).utf8ToString(), equalTo("08"));
    assertThat(topDocs.scoreDocs[6].doc, equalTo(1));
    assertThat((BytesRef) ((FieldDoc) topDocs.scoreDocs[6]).fields[0], equalTo(null));
    assertThat(topDocs.scoreDocs[7].doc, equalTo(5));
    assertThat((BytesRef) ((FieldDoc) topDocs.scoreDocs[7]).fields[0], equalTo(null));
    topDocs = searcher.search(new MatchAllDocsQuery(), 10, new Sort(new SortField("value", indexFieldData.comparatorSource(null, MultiValueMode.MAX, null), true)));
    assertThat(topDocs.totalHits, equalTo(8));
    assertThat(topDocs.scoreDocs.length, equalTo(8));
    assertThat(topDocs.scoreDocs[0].doc, equalTo(6));
    assertThat(((BytesRef) ((FieldDoc) topDocs.scoreDocs[0]).fields[0]).utf8ToString(), equalTo("10"));
    assertThat(topDocs.scoreDocs[1].doc, equalTo(4));
    assertThat(((BytesRef) ((FieldDoc) topDocs.scoreDocs[1]).fields[0]).utf8ToString(), equalTo("08"));
    assertThat(topDocs.scoreDocs[2].doc, equalTo(3));
    assertThat(((BytesRef) ((FieldDoc) topDocs.scoreDocs[2]).fields[0]).utf8ToString(), equalTo("06"));
    assertThat(topDocs.scoreDocs[3].doc, equalTo(0));
    assertThat(((BytesRef) ((FieldDoc) topDocs.scoreDocs[3]).fields[0]).utf8ToString(), equalTo("04"));
    assertThat(topDocs.scoreDocs[4].doc, equalTo(2));
    assertThat(((BytesRef) ((FieldDoc) topDocs.scoreDocs[4]).fields[0]).utf8ToString(), equalTo("03"));
    assertThat(topDocs.scoreDocs[5].doc, equalTo(7));
    assertThat(((BytesRef) ((FieldDoc) topDocs.scoreDocs[5]).fields[0]).utf8ToString(), equalTo("!10"));
    assertThat(topDocs.scoreDocs[6].doc, equalTo(1));
    assertThat(((FieldDoc) topDocs.scoreDocs[6]).fields[0], equalTo(null));
    assertThat(topDocs.scoreDocs[7].doc, equalTo(5));
    assertThat(((FieldDoc) topDocs.scoreDocs[7]).fields[0], equalTo(null));
}

Example 4 with Sort

use of org.apache.lucene.search.Sort in project elasticsearch by elastic.

the class AbstractStringFieldDataTestCase method testActualMissingValue.

public void testActualMissingValue(boolean reverse) throws IOException {
    // missing value is set to an actual value
    final String[] values = new String[randomIntBetween(2, 30)];
    for (int i = 1; i < values.length; ++i) {
        values[i] = TestUtil.randomUnicodeString(random());
    }
    final int numDocs = scaledRandomIntBetween(10, 3072);
    for (int i = 0; i < numDocs; ++i) {
        final String value = RandomPicks.randomFrom(random(), values);
        if (value == null) {
            writer.addDocument(new Document());
        } else {
            Document d = new Document();
            addField(d, "value", value);
            writer.addDocument(d);
        }
        if (randomInt(10) == 0) {
            writer.commit();
        }
    }
    final IndexFieldData indexFieldData = getForField("value");
    final String missingValue = values[1];
    IndexSearcher searcher = new IndexSearcher(DirectoryReader.open(writer));
    XFieldComparatorSource comparator = indexFieldData.comparatorSource(missingValue, MultiValueMode.MIN, null);
    TopFieldDocs topDocs = searcher.search(new MatchAllDocsQuery(), randomBoolean() ? numDocs : randomIntBetween(10, numDocs), new Sort(new SortField("value", comparator, reverse)));
    assertEquals(numDocs, topDocs.totalHits);
    BytesRef previousValue = reverse ? UnicodeUtil.BIG_TERM : new BytesRef();
    for (int i = 0; i < topDocs.scoreDocs.length; ++i) {
        final String docValue = searcher.doc(topDocs.scoreDocs[i].doc).get("value");
        final BytesRef value = new BytesRef(docValue == null ? missingValue : docValue);
        if (reverse) {
            assertTrue(previousValue.compareTo(value) >= 0);
        } else {
            assertTrue(previousValue.compareTo(value) <= 0);
        }
        previousValue = value;
    }
    searcher.getIndexReader().close();
}

Example 5 with Sort

use of org.apache.lucene.search.Sort in project elasticsearch by elastic.

the class NestedSortingTests method getTopDocs.

private TopDocs getTopDocs(IndexSearcher searcher, IndexFieldData<?> indexFieldData, String missingValue, MultiValueMode sortMode, int n, boolean reverse) throws IOException {
    Query parentFilter = new TermQuery(new Term("__type", "parent"));
    Query childFilter = new TermQuery(new Term("__type", "child"));
    XFieldComparatorSource nestedComparatorSource = indexFieldData.comparatorSource(missingValue, sortMode, createNested(searcher, parentFilter, childFilter));
    Query query = new ConstantScoreQuery(parentFilter);
    Sort sort = new Sort(new SortField("f", nestedComparatorSource, reverse));
    return searcher.search(query, n, sort);
}