Examples with Change com.baremaps.osm.domain.Change used on opensource projects

Example 1 with Change

use of com.baremaps.osm.domain.Change in project baremaps by baremaps.

the class XmlChangeSpliteratorTest method tryAdvance.

@Test
void tryAdvance() throws IOException {
    try (InputStream input = DATA_OSC_XML.openStream()) {
        Spliterator<Change> spliterator = new OsmChangeSpliterator(input);
        spliterator.forEachRemaining(fileBlock -> assertNotNull(fileBlock));
        assertFalse(spliterator.tryAdvance(new HoldingConsumer<>()));
    }
}

Example 2 with Change

use of com.baremaps.osm.domain.Change in project baremaps by baremaps.

the class XmlChangeSpliteratorTest method forEachRemaining.

@Test
void forEachRemaining() throws IOException {
    try (InputStream input = DATA_OSC_XML.openStream()) {
        Spliterator<Change> spliterator = new OsmChangeSpliterator(input);
        AccumulatingConsumer<Change> accumulator = new AccumulatingConsumer<>();
        spliterator.forEachRemaining(accumulator);
        assertEquals(accumulator.values().size(), 7);
        assertEquals(accumulator.values().stream().flatMap(change -> change.getEntities().stream()).collect(Collectors.toList()).size(), 51);
    }
}

Example 3 with Change

use of com.baremaps.osm.domain.Change in project baremaps by baremaps.

the class UpdateService method call.

@Override
public Void call() throws Exception {
    Header header = headerRepository.selectLatest();
    String replicationUrl = header.getReplicationUrl();
    Long sequenceNumber = header.getReplicationSequenceNumber() + 1;
    Consumer<Entity> createGeometry = new CreateGeometryConsumer(coordinates, references);
    Consumer<Entity> reprojectGeometry = new ReprojectEntityConsumer(4326, srid);
    Consumer<Change> prepareGeometries = new ChangeEntityConsumer(createGeometry.andThen(reprojectGeometry));
    Function<Change, Change> prepareChange = consumeThenReturn(prepareGeometries);
    Consumer<Change> saveChange = new SaveChangeConsumer(nodeRepository, wayRepository, relationRepository);
    URI changeUri = resolve(replicationUrl, sequenceNumber, "osc.gz");
    Blob changeBlob = blobStore.get(changeUri);
    ProgressLogger progressLogger = new ProgressLogger(changeBlob.getContentLength(), 5000);
    try (InputStream blobInputStream = changeBlob.getInputStream();
        InputStream progressInputStream = new InputStreamProgress(blobInputStream, progressLogger);
        InputStream gzipInputStream = new GZIPInputStream(progressInputStream)) {
        new OsmChangeParser().changes(gzipInputStream).map(prepareChange).forEach(saveChange);
    }
    URI stateUri = resolve(replicationUrl, sequenceNumber, "state.txt");
    Blob stateBlob = blobStore.get(stateUri);
    try (InputStream stateInputStream = stateBlob.getInputStream()) {
        State state = new OsmStateParser().state(stateInputStream);
        headerRepository.put(new Header(state.getSequenceNumber(), state.getTimestamp(), header.getReplicationUrl(), header.getSource(), header.getWritingProgram()));
    }
    return null;
}

Example 4 with Change

use of com.baremaps.osm.domain.Change in project baremaps by baremaps.

the class OsmChangeSpliterator method tryAdvance.

@Override
public boolean tryAdvance(Consumer<? super Change> consumer) {
    try {
        if (reader.hasNext()) {
            int event = reader.next();
            switch(event) {
                case START_ELEMENT:
                    if (ELEMENT_NAME_OSMCHANGE.equals(reader.getLocalName())) {
                        return true;
                    }
                    Change entity = readChange();
                    consumer.accept(entity);
                    return true;
                case END_DOCUMENT:
                    return false;
                default:
                    return true;
            }
        } else {
            return false;
        }
    } catch (XMLStreamException e) {
        throw new StreamException(e);
    }
}

Example 5 with Change

use of com.baremaps.osm.domain.Change in project baremaps by baremaps.

the class OsmChangeSpliterator method readChange.

private Change readChange() throws XMLStreamException {
    switch(reader.getLocalName()) {
        case ELEMENT_NAME_CREATE:
        case ELEMENT_NAME_DELETE:
        case ELEMENT_NAME_MODIFY:
            ChangeType type = ChangeType.valueOf(reader.getLocalName().toUpperCase());
            List<Entity> elements = new ArrayList<>();
            reader.nextTag();
            while (reader.getEventType() == XMLStreamConstants.START_ELEMENT) {
                elements.add(readElement());
                reader.nextTag();
            }
            return new Change(type, elements);
        default:
            throw new StreamException("Unexpected XML element: " + reader.getLocalName());
    }
}