Examples with ORDERED java.util.Spliterator.ORDERED used on opensource projects

Example 1 with ORDERED

use of java.util.Spliterator.ORDERED in project hazelcast by hazelcast.

the class SqlCompactTest method randomEntryFrom.

@SuppressWarnings({ "OptionalGetWithoutIsPresent", "unchecked", "rawtypes" })
private static Entry<Data, Data> randomEntryFrom(String mapName) {
    NodeEngine engine = getNodeEngine(instance());
    MapService service = engine.getService(MapService.SERVICE_NAME);
    MapServiceContext context = service.getMapServiceContext();
    return Arrays.stream(context.getPartitionContainers()).map(partitionContainer -> partitionContainer.getExistingRecordStore(mapName)).filter(Objects::nonNull).flatMap(store -> {
        Iterator<Entry<Data, Record>> iterator = store.iterator();
        return stream(spliteratorUnknownSize(iterator, ORDERED), false);
    }).map(entry -> entry(entry.getKey(), (Data) entry.getValue().getValue())).findFirst().get();
}

Example 2 with ORDERED

use of java.util.Spliterator.ORDERED in project hazelcast by hazelcast.

the class SqlPortableTest method randomEntryFrom.

@SuppressWarnings({ "OptionalGetWithoutIsPresent", "unchecked", "rawtypes" })
private static Entry<Data, Data> randomEntryFrom(String mapName) {
    NodeEngine engine = getNodeEngine(instance());
    MapService service = engine.getService(MapService.SERVICE_NAME);
    MapServiceContext context = service.getMapServiceContext();
    return Arrays.stream(context.getPartitionContainers()).map(partitionContainer -> partitionContainer.getExistingRecordStore(mapName)).filter(Objects::nonNull).flatMap(store -> {
        Iterator<Entry<Data, Record>> iterator = store.iterator();
        return stream(spliteratorUnknownSize(iterator, ORDERED), false);
    }).map(entry -> entry(entry.getKey(), (Data) entry.getValue().getValue())).findFirst().get();
}

Example 3 with ORDERED

use of java.util.Spliterator.ORDERED in project hazelcast by hazelcast.

the class CsvReadFileFnProvider method createReadFileFn.

@SuppressWarnings("unchecked")
@Nonnull
@Override
public <T> FunctionEx<Path, Stream<T>> createReadFileFn(@Nonnull FileFormat<T> format) {
    CsvFileFormat<T> csvFileFormat = (CsvFileFormat<T>) format;
    // Format is not Serializable
    Class<?> formatClazz = csvFileFormat.clazz();
    return path -> {
        FileInputStream fis = new FileInputStream(path.toFile());
        MappingIterator<T> iterator;
        Function<T, T> projection = identity();
        if (formatClazz == String[].class) {
            ObjectReader reader = new CsvMapper().enable(Feature.WRAP_AS_ARRAY).readerFor(String[].class).with(CsvSchema.emptySchema().withSkipFirstDataRow(false));
            iterator = reader.readValues(fis);
            if (!iterator.hasNext()) {
                throw new JetException("Header row missing in " + path);
            }
            String[] header = (String[]) iterator.next();
            List<String> fieldNames = csvFileFormat.fieldNames();
            if (fieldNames != null) {
                projection = (Function<T, T>) createFieldProjection(header, fieldNames);
            }
        } else {
            iterator = new CsvMapper().readerFor(formatClazz).withoutFeatures(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES).with(CsvSchema.emptySchema().withHeader()).readValues(fis);
        }
        return StreamSupport.stream(Spliterators.spliteratorUnknownSize(iterator, ORDERED), false).map(projection).onClose(() -> uncheckRun(fis::close));
    };
}

Example 4 with ORDERED

use of java.util.Spliterator.ORDERED in project sql-boot by sql-boot.

the class JdbcSqlQuery method getMapStream.

private Stream<Map<String, Object>> getMapStream(final String sqlText) {
    logger.info(sqlText);
    final SqlRowSet rowSet = new JdbcTemplate(dataSource).queryForRowSet(sqlText);
    Iterator<Map<String, Object>> iterator = new Iterator<Map<String, Object>>() {

        @Override
        public boolean hasNext() {
            return rowSet.next();
        }

        @Override
        public Map<String, Object> next() {
            return stream(rowSet.getMetaData().getColumnNames()).map(v -> {
                Object object = rowSet.getObject(v);
                if (object instanceof SerialClob) {
                    try {
                        return new SimpleEntry<>(v, (Object) ((SerialClob) object).getSubString(1, (int) ((SerialClob) object).length()));
                    } catch (SerialException e) {
                        e.printStackTrace();
                    }
                }
                return new SimpleEntry<>(v, object);
            }).collect(toMap(k -> k.getKey(), /*.toLowerCase()*/
            v -> ofNullable(v.getValue()).orElse(nullAlias), (a, b) -> a, LinkedHashMap::new));
        }
    };
    return stream(spliteratorUnknownSize(iterator, ORDERED), false);
}