Examples with FieldsProducer org.apache.lucene.codecs.FieldsProducer used on opensource projects

Example 16 with FieldsProducer

use of org.apache.lucene.codecs.FieldsProducer in project lucene-solr by apache.

the class Lucene50PostingsFormat method fieldsProducer.

@Override
public FieldsProducer fieldsProducer(SegmentReadState state) throws IOException {
    PostingsReaderBase postingsReader = new Lucene50PostingsReader(state);
    boolean success = false;
    try {
        FieldsProducer ret = new BlockTreeTermsReader(postingsReader, state);
        success = true;
        return ret;
    } finally {
        if (!success) {
            IOUtils.closeWhileHandlingException(postingsReader);
        }
    }
}

Example 17 with FieldsProducer

use of org.apache.lucene.codecs.FieldsProducer in project lucene-solr by apache.

the class BaseIndexFileFormatTestCase method testMultiClose.

/** Calls close multiple times on closeable codec apis */
public void testMultiClose() throws IOException {
    // first make a one doc index
    Directory oneDocIndex = applyCreatedVersionMajor(newDirectory());
    IndexWriter iw = new IndexWriter(oneDocIndex, new IndexWriterConfig(new MockAnalyzer(random())));
    Document oneDoc = new Document();
    FieldType customType = new FieldType(TextField.TYPE_STORED);
    customType.setStoreTermVectors(true);
    Field customField = new Field("field", "contents", customType);
    oneDoc.add(customField);
    oneDoc.add(new NumericDocValuesField("field", 5));
    iw.addDocument(oneDoc);
    LeafReader oneDocReader = getOnlyLeafReader(DirectoryReader.open(iw));
    iw.close();
    // now feed to codec apis manually
    // we use FSDir, things like ramdir are not guaranteed to cause fails if you write to them after close(), etc
    Directory dir = newFSDirectory(createTempDir("justSoYouGetSomeChannelErrors"));
    Codec codec = getCodec();
    SegmentInfo segmentInfo = new SegmentInfo(dir, Version.LATEST, Version.LATEST, "_0", 1, false, codec, Collections.emptyMap(), StringHelper.randomId(), new HashMap<>(), null);
    FieldInfo proto = oneDocReader.getFieldInfos().fieldInfo("field");
    FieldInfo field = new FieldInfo(proto.name, proto.number, proto.hasVectors(), proto.omitsNorms(), proto.hasPayloads(), proto.getIndexOptions(), proto.getDocValuesType(), proto.getDocValuesGen(), new HashMap<>(), proto.getPointDimensionCount(), proto.getPointNumBytes());
    FieldInfos fieldInfos = new FieldInfos(new FieldInfo[] { field });
    SegmentWriteState writeState = new SegmentWriteState(null, dir, segmentInfo, fieldInfos, null, new IOContext(new FlushInfo(1, 20)));
    SegmentReadState readState = new SegmentReadState(dir, segmentInfo, fieldInfos, IOContext.READ);
    // PostingsFormat
    try (FieldsConsumer consumer = codec.postingsFormat().fieldsConsumer(writeState)) {
        consumer.write(oneDocReader.fields());
        IOUtils.close(consumer);
        IOUtils.close(consumer);
    }
    try (FieldsProducer producer = codec.postingsFormat().fieldsProducer(readState)) {
        IOUtils.close(producer);
        IOUtils.close(producer);
    }
    // DocValuesFormat
    try (DocValuesConsumer consumer = codec.docValuesFormat().fieldsConsumer(writeState)) {
        consumer.addNumericField(field, new EmptyDocValuesProducer() {

            @Override
            public NumericDocValues getNumeric(FieldInfo field) {
                return new NumericDocValues() {

                    int docID = -1;

                    @Override
                    public int docID() {
                        return docID;
                    }

                    @Override
                    public int nextDoc() {
                        docID++;
                        if (docID == 1) {
                            docID = NO_MORE_DOCS;
                        }
                        return docID;
                    }

                    @Override
                    public int advance(int target) {
                        if (docID <= 0 && target == 0) {
                            docID = 0;
                        } else {
                            docID = NO_MORE_DOCS;
                        }
                        return docID;
                    }

                    @Override
                    public boolean advanceExact(int target) throws IOException {
                        docID = target;
                        return target == 0;
                    }

                    @Override
                    public long cost() {
                        return 1;
                    }

                    @Override
                    public long longValue() {
                        return 5;
                    }
                };
            }
        });
        IOUtils.close(consumer);
        IOUtils.close(consumer);
    }
    try (DocValuesProducer producer = codec.docValuesFormat().fieldsProducer(readState)) {
        IOUtils.close(producer);
        IOUtils.close(producer);
    }
    // NormsFormat
    try (NormsConsumer consumer = codec.normsFormat().normsConsumer(writeState)) {
        consumer.addNormsField(field, new NormsProducer() {

            @Override
            public NumericDocValues getNorms(FieldInfo field) {
                return new NumericDocValues() {

                    int docID = -1;

                    @Override
                    public int docID() {
                        return docID;
                    }

                    @Override
                    public int nextDoc() {
                        docID++;
                        if (docID == 1) {
                            docID = NO_MORE_DOCS;
                        }
                        return docID;
                    }

                    @Override
                    public int advance(int target) {
                        if (docID <= 0 && target == 0) {
                            docID = 0;
                        } else {
                            docID = NO_MORE_DOCS;
                        }
                        return docID;
                    }

                    @Override
                    public boolean advanceExact(int target) throws IOException {
                        docID = target;
                        return target == 0;
                    }

                    @Override
                    public long cost() {
                        return 1;
                    }

                    @Override
                    public long longValue() {
                        return 5;
                    }
                };
            }

            @Override
            public void checkIntegrity() {
            }

            @Override
            public void close() {
            }

            @Override
            public long ramBytesUsed() {
                return 0;
            }
        });
        IOUtils.close(consumer);
        IOUtils.close(consumer);
    }
    try (NormsProducer producer = codec.normsFormat().normsProducer(readState)) {
        IOUtils.close(producer);
        IOUtils.close(producer);
    }
    // TermVectorsFormat
    try (TermVectorsWriter consumer = codec.termVectorsFormat().vectorsWriter(dir, segmentInfo, writeState.context)) {
        consumer.startDocument(1);
        consumer.startField(field, 1, false, false, false);
        consumer.startTerm(new BytesRef("testing"), 2);
        consumer.finishTerm();
        consumer.finishField();
        consumer.finishDocument();
        consumer.finish(fieldInfos, 1);
        IOUtils.close(consumer);
        IOUtils.close(consumer);
    }
    try (TermVectorsReader producer = codec.termVectorsFormat().vectorsReader(dir, segmentInfo, fieldInfos, readState.context)) {
        IOUtils.close(producer);
        IOUtils.close(producer);
    }
    // StoredFieldsFormat
    try (StoredFieldsWriter consumer = codec.storedFieldsFormat().fieldsWriter(dir, segmentInfo, writeState.context)) {
        consumer.startDocument();
        consumer.writeField(field, customField);
        consumer.finishDocument();
        consumer.finish(fieldInfos, 1);
        IOUtils.close(consumer);
        IOUtils.close(consumer);
    }
    try (StoredFieldsReader producer = codec.storedFieldsFormat().fieldsReader(dir, segmentInfo, fieldInfos, readState.context)) {
        IOUtils.close(producer);
        IOUtils.close(producer);
    }
    IOUtils.close(oneDocReader, oneDocIndex, dir);
}

Example 18 with FieldsProducer

use of org.apache.lucene.codecs.FieldsProducer in project lucene-solr by apache.

the class MemoryPostingsFormat method fieldsProducer.

@Override
public FieldsProducer fieldsProducer(SegmentReadState state) throws IOException {
    final String fileName = IndexFileNames.segmentFileName(state.segmentInfo.name, state.segmentSuffix, EXTENSION);
    final SortedMap<String, TermsReader> fields = new TreeMap<>();
    try (ChecksumIndexInput in = state.directory.openChecksumInput(fileName, IOContext.READONCE)) {
        Throwable priorE = null;
        try {
            CodecUtil.checkIndexHeader(in, CODEC_NAME, VERSION_START, VERSION_CURRENT, state.segmentInfo.getId(), state.segmentSuffix);
            while (true) {
                final int termCount = in.readVInt();
                if (termCount == 0) {
                    break;
                }
                final TermsReader termsReader = new TermsReader(state.fieldInfos, in, termCount);
                // System.out.println("load field=" + termsReader.field.name);
                fields.put(termsReader.field.name, termsReader);
            }
        } catch (Throwable exception) {
            priorE = exception;
        } finally {
            CodecUtil.checkFooter(in, priorE);
        }
    }
    return new FieldsProducer() {

        @Override
        public Iterator<String> iterator() {
            return Collections.unmodifiableSet(fields.keySet()).iterator();
        }

        @Override
        public Terms terms(String field) {
            return fields.get(field);
        }

        @Override
        public int size() {
            return fields.size();
        }

        @Override
        public void close() {
            // Drop ref to FST:
            for (TermsReader termsReader : fields.values()) {
                termsReader.fst = null;
            }
        }

        @Override
        public long ramBytesUsed() {
            long sizeInBytes = 0;
            for (Map.Entry<String, TermsReader> entry : fields.entrySet()) {
                sizeInBytes += (entry.getKey().length() * Character.BYTES);
                sizeInBytes += entry.getValue().ramBytesUsed();
            }
            return sizeInBytes;
        }

        @Override
        public Collection<Accountable> getChildResources() {
            return Accountables.namedAccountables("field", fields);
        }

        @Override
        public String toString() {
            return "MemoryPostings(fields=" + fields.size() + ")";
        }

        @Override
        public void checkIntegrity() throws IOException {
        }
    };
}