Examples with LeafReader org.apache.lucene.index.LeafReader used on opensource projects

Example 1 with LeafReader

use of org.apache.lucene.index.LeafReader in project elasticsearch by elastic.

the class SortedNumericDVIndexFieldData method load.

@Override
public AtomicNumericFieldData load(LeafReaderContext context) {
    final LeafReader reader = context.reader();
    final String field = fieldName;
    switch(numericType) {
        case HALF_FLOAT:
            return new SortedNumericHalfFloatFieldData(reader, field);
        case FLOAT:
            return new SortedNumericFloatFieldData(reader, field);
        case DOUBLE:
            return new SortedNumericDoubleFieldData(reader, field);
        default:
            return new SortedNumericLongFieldData(reader, field, numericType);
    }
}

Example 2 with LeafReader

use of org.apache.lucene.index.LeafReader in project elasticsearch by elastic.

the class CompletionFieldStats method completionStats.

/**
     * Returns total in-heap bytes used by all suggesters.  This method has CPU cost <code>O(numIndexedFields)</code>.
     *
     * @param fieldNamePatterns if non-null, any completion field name matching any of these patterns will break out its in-heap bytes
     * separately in the returned {@link CompletionStats}
     */
public static CompletionStats completionStats(IndexReader indexReader, String... fieldNamePatterns) {
    long sizeInBytes = 0;
    ObjectLongHashMap<String> completionFields = null;
    if (fieldNamePatterns != null && fieldNamePatterns.length > 0) {
        completionFields = new ObjectLongHashMap<>(fieldNamePatterns.length);
    }
    for (LeafReaderContext atomicReaderContext : indexReader.leaves()) {
        LeafReader atomicReader = atomicReaderContext.reader();
        try {
            Fields fields = atomicReader.fields();
            for (String fieldName : fields) {
                Terms terms = fields.terms(fieldName);
                if (terms instanceof CompletionTerms) {
                    // TODO: currently we load up the suggester for reporting its size
                    long fstSize = ((CompletionTerms) terms).suggester().ramBytesUsed();
                    if (fieldNamePatterns != null && fieldNamePatterns.length > 0 && Regex.simpleMatch(fieldNamePatterns, fieldName)) {
                        completionFields.addTo(fieldName, fstSize);
                    }
                    sizeInBytes += fstSize;
                }
            }
        } catch (IOException ioe) {
            throw new ElasticsearchException(ioe);
        }
    }
    return new CompletionStats(sizeInBytes, completionFields == null ? null : new FieldMemoryStats(completionFields));
}

Example 3 with LeafReader

use of org.apache.lucene.index.LeafReader in project elasticsearch by elastic.

the class InternalEngineTests method getSeqNosSet.

private static FixedBitSet getSeqNosSet(final IndexReader reader, final long highestSeqNo) throws IOException {
    // _seq_no are stored as doc values for the time being, so this is how we get them
    // (as opposed to using an IndexSearcher or IndexReader)
    final FixedBitSet bitSet = new FixedBitSet((int) highestSeqNo + 1);
    final List<LeafReaderContext> leaves = reader.leaves();
    if (leaves.isEmpty()) {
        return bitSet;
    }
    for (int i = 0; i < leaves.size(); i++) {
        final LeafReader leaf = leaves.get(i).reader();
        final NumericDocValues values = leaf.getNumericDocValues(SeqNoFieldMapper.NAME);
        if (values == null) {
            continue;
        }
        final Bits bits = leaf.getLiveDocs();
        for (int docID = 0; docID < leaf.maxDoc(); docID++) {
            if (bits == null || bits.get(docID)) {
                final long seqNo = values.get(docID);
                assertFalse("should not have more than one document with the same seq_no[" + seqNo + "]", bitSet.get((int) seqNo));
                bitSet.set((int) seqNo);
            }
        }
    }
    return bitSet;
}

Example 4 with LeafReader

use of org.apache.lucene.index.LeafReader in project elasticsearch by elastic.

the class BooleanFieldMapperTests method testDefaults.

public void testDefaults() throws IOException {
    String mapping = XContentFactory.jsonBuilder().startObject().startObject("type").startObject("properties").startObject("field").field("type", "boolean").endObject().endObject().endObject().endObject().string();
    DocumentMapper defaultMapper = parser.parse("type", new CompressedXContent(mapping));
    ParsedDocument doc = defaultMapper.parse("test", "type", "1", XContentFactory.jsonBuilder().startObject().field("field", true).endObject().bytes());
    try (Directory dir = new RAMDirectory();
        IndexWriter w = new IndexWriter(dir, new IndexWriterConfig(new MockAnalyzer(random())))) {
        w.addDocuments(doc.docs());
        try (DirectoryReader reader = DirectoryReader.open(w)) {
            final LeafReader leaf = reader.leaves().get(0).reader();
            // boolean fields are indexed and have doc values by default
            assertEquals(new BytesRef("T"), leaf.terms("field").iterator().next());
            SortedNumericDocValues values = leaf.getSortedNumericDocValues("field");
            assertNotNull(values);
            values.setDocument(0);
            assertEquals(1, values.count());
            assertEquals(1, values.valueAt(0));
        }
    }
}

Example 5 with LeafReader

use of org.apache.lucene.index.LeafReader in project elasticsearch by elastic.

the class HalfFloatFielddataTests method testSingleValued.

public void testSingleValued() throws IOException {
    Directory dir = newDirectory();
    // we need the default codec to check for singletons
    IndexWriter w = new IndexWriter(dir, new IndexWriterConfig(null).setCodec(TestUtil.getDefaultCodec()));
    Document doc = new Document();
    for (IndexableField f : NumberFieldMapper.NumberType.HALF_FLOAT.createFields("half_float", 3f, false, true, false)) {
        doc.add(f);
    }
    w.addDocument(doc);
    final DirectoryReader dirReader = DirectoryReader.open(w);
    LeafReader reader = getOnlyLeafReader(dirReader);
    SortedNumericDoubleValues values = new SortedNumericDVIndexFieldData.SortedNumericHalfFloatFieldData(reader, "half_float").getDoubleValues();
    assertNotNull(FieldData.unwrapSingleton(values));
    values.setDocument(0);
    assertEquals(1, values.count());
    assertEquals(3f, values.valueAt(0), 0f);
    IOUtils.close(dirReader, w, dir);
}