Examples with ICloseableIterable de.invesdwin.util.collections.iterable.ICloseableIterable used on opensource projects

Example 1 with ICloseableIterable

use of de.invesdwin.util.collections.iterable.ICloseableIterable in project invesdwin-context-persistence by subes.

the class TimeSeriesStorageCache method readRangeFilesReverse.

protected ICloseableIterable<File> readRangeFilesReverse(final FDate from, final FDate to) {
    final FDate usedFrom;
    if (from == null) {
        final V lastValue = getLastValue();
        if (lastValue == null) {
            return EmptyCloseableIterable.getInstance();
        }
        usedFrom = extractTime.apply(lastValue);
    } else {
        usedFrom = from;
    }
    return new ICloseableIterable<File>() {

        @Override
        public ACloseableIterator<File> iterator() {
            return new ACloseableIterator<File>() {

                // use latest time available even if delegate iterator has no values
                private FDate latestLastTime = fileLookupTable_latestRangeKeyCache.get(usedFrom);

                // add 1 ms to not collide with firstTime
                private final ICloseableIterator<FDate> delegate = getRangeKeysReverse(hashKey, usedFrom.addMilliseconds(-1), to);

                private FDate delegateLastTime = null;

                @Override
                protected boolean innerHasNext() {
                    return latestLastTime != null || delegateLastTime != null || delegate.hasNext();
                }

                private ICloseableIterator<FDate> getRangeKeysReverse(final String hashKey, final FDate from, final FDate to) {
                    final ICloseableIterator<FDate> range = getAllRangeKeysReverse();
                    return new ASkippingIterator<FDate>(range) {

                        @Override
                        protected boolean skip(final FDate element) {
                            if (element.isAfter(from)) {
                                return true;
                            } else if (element.isBefore(to)) {
                                throw new FastNoSuchElementException("getRangeKeysReverse reached end");
                            }
                            return false;
                        }
                    };
                }

                @Override
                protected File innerNext() {
                    final FDate time;
                    if (delegateLastTime != null) {
                        time = delegateLastTime;
                        delegateLastTime = null;
                    } else if (latestLastTime != null) {
                        time = latestLastTime;
                        latestLastTime = null;
                        if (delegate.hasNext()) {
                            // prevent duplicate first times
                            delegateLastTime = delegate.next();
                            if (delegateLastTime.isAfterOrEqualTo(time)) {
                                delegateLastTime = null;
                            }
                        }
                    } else {
                        time = delegate.next();
                    }
                    return newFile(time);
                }

                @Override
                protected void innerClose() {
                    delegate.close();
                }
            };
        }
    };
}

Example 2 with ICloseableIterable

use of de.invesdwin.util.collections.iterable.ICloseableIterable in project invesdwin-context-persistence by subes.

the class TimeSeriesStorageCache method readRangeFiles.

protected ICloseableIterable<File> readRangeFiles(final FDate from, final FDate to) {
    final FDate usedFrom;
    if (from == null) {
        final V firstValue = getFirstValue();
        if (firstValue == null) {
            return EmptyCloseableIterable.getInstance();
        }
        usedFrom = extractTime.apply(firstValue);
    } else {
        usedFrom = from;
    }
    return new ICloseableIterable<File>() {

        @Override
        public ACloseableIterator<File> iterator() {
            return new ACloseableIterator<File>() {

                // use latest time available even if delegate iterator has no values
                private FDate latestFirstTime = fileLookupTable_latestRangeKeyCache.get(usedFrom);

                // add 1 ms to not collide with firstTime
                private final ICloseableIterator<FDate> delegate = getRangeKeys(hashKey, usedFrom.addMilliseconds(1), to);

                private FDate delegateFirstTime = null;

                @Override
                protected boolean innerHasNext() {
                    return latestFirstTime != null || delegateFirstTime != null || delegate.hasNext();
                }

                private ICloseableIterator<FDate> getRangeKeys(final String hashKey, final FDate from, final FDate to) {
                    final ICloseableIterator<FDate> range = getAllRangeKeys();
                    return new ASkippingIterator<FDate>(range) {

                        @Override
                        protected boolean skip(final FDate element) {
                            if (element.isBefore(from)) {
                                return true;
                            } else if (element.isAfter(to)) {
                                throw new FastNoSuchElementException("getRangeKeys reached end");
                            }
                            return false;
                        }
                    };
                }

                @Override
                protected File innerNext() {
                    final FDate time;
                    if (delegateFirstTime != null) {
                        time = delegateFirstTime;
                        delegateFirstTime = null;
                    } else if (latestFirstTime != null) {
                        time = latestFirstTime;
                        latestFirstTime = null;
                        if (delegate.hasNext()) {
                            // prevent duplicate first times
                            delegateFirstTime = delegate.next();
                            if (delegateFirstTime.isBeforeOrEqualTo(time)) {
                                delegateFirstTime = null;
                            }
                        }
                    } else {
                        time = delegate.next();
                    }
                    return newFile(time);
                }

                @Override
                protected void innerClose() {
                    delegate.close();
                }
            };
        }
    };
}

Example 3 with ICloseableIterable

use of de.invesdwin.util.collections.iterable.ICloseableIterable in project invesdwin-context-persistence by subes.

the class ALiveSegmentedTimeSeriesDBWithNoCacheTest method setUp.

@Override
public void setUp() throws Exception {
    super.setUp();
    final AHistoricalCache<TimeRange> segmentFinder = PeriodicalSegmentFinder.newCache(new Duration(2, FTimeUnit.YEARS), false);
    table = new ALiveSegmentedTimeSeriesDB<String, FDate>(getClass().getSimpleName()) {

        private FDate curTime = null;

        @Override
        public AHistoricalCache<TimeRange> getSegmentFinder(final String key) {
            return segmentFinder;
        }

        @Override
        protected ISerde<FDate> newValueSerde() {
            return new TypeDelegateSerde<FDate>(FDate.class);
        }

        @Override
        protected Integer newValueFixedLength() {
            return null;
        }

        @Override
        protected String innerHashKeyToString(final String key) {
            return key;
        }

        @Override
        protected File getBaseDirectory() {
            return ContextProperties.TEMP_DIRECTORY;
        }

        @Override
        protected ICloseableIterable<? extends FDate> downloadSegmentElements(final SegmentedKey<String> segmentedKey) {
            return new ASkippingIterable<FDate>(WrapperCloseableIterable.maybeWrap(entities)) {

                private final FDate from = segmentedKey.getSegment().getFrom();

                private final FDate to = segmentedKey.getSegment().getTo();

                @Override
                protected boolean skip(final FDate element) {
                    return element.isBefore(from) || element.isAfter(to);
                }
            };
        }

        @Override
        protected FDate extractEndTime(final FDate value) {
            return value;
        }

        @Override
        public FDate getFirstAvailableHistoricalSegmentFrom(final String key) {
            if (entities.isEmpty() || curTime == null) {
                return null;
            }
            final FDate firstTime = FDates.min(curTime, entities.get(0));
            final TimeRange firstSegment = segmentFinder.query().getValue(firstTime);
            if (firstSegment.getTo().isBeforeOrEqualTo(curTime)) {
                return firstSegment.getFrom();
            } else {
                return segmentFinder.query().getValue(firstSegment.getFrom().addMilliseconds(-1)).getFrom();
            }
        }

        @Override
        public FDate getLastAvailableHistoricalSegmentTo(final String key, final FDate updateTo) {
            if (entities.isEmpty() || curTime == null) {
                return null;
            }
            final TimeRange lastSegment = segmentFinder.query().getValue(curTime);
            if (lastSegment.getTo().isBeforeOrEqualTo(curTime)) {
                return lastSegment.getTo();
            } else {
                return segmentFinder.query().getValue(lastSegment.getFrom().addMilliseconds(-1)).getTo();
            }
        }

        @Override
        public void putNextLiveValue(final String key, final FDate nextLiveValue) {
            curTime = nextLiveValue;
            super.putNextLiveValue(key, nextLiveValue);
        }

        @Override
        protected String getElementsName() {
            return "values";
        }
    };
    for (final FDate entity : entities) {
        table.putNextLiveValue(KEY, entity);
    }
}

Example 4 with ICloseableIterable

use of de.invesdwin.util.collections.iterable.ICloseableIterable in project invesdwin-context-persistence by subes.

the class ASegmentedTimeSeriesDBWithCacheTest method setUp.

@Override
public void setUp() throws Exception {
    super.setUp();
    final AHistoricalCache<TimeRange> segmentFinder = PeriodicalSegmentFinder.newCache(new Duration(2, FTimeUnit.YEARS), false);
    table = new ASegmentedTimeSeriesDB<String, FDate>(getClass().getSimpleName()) {

        @Override
        public AHistoricalCache<TimeRange> getSegmentFinder(final String key) {
            return segmentFinder;
        }

        @Override
        protected ISerde<FDate> newValueSerde() {
            return new TypeDelegateSerde<FDate>(FDate.class);
        }

        @Override
        protected Integer newValueFixedLength() {
            return null;
        }

        @Override
        protected String innerHashKeyToString(final String key) {
            return key;
        }

        @Override
        protected File getBaseDirectory() {
            return ContextProperties.TEMP_DIRECTORY;
        }

        @Override
        protected ICloseableIterable<? extends FDate> downloadSegmentElements(final SegmentedKey<String> segmentedKey) {
            return new ASkippingIterable<FDate>(WrapperCloseableIterable.maybeWrap(entities)) {

                private final FDate from = segmentedKey.getSegment().getFrom();

                private final FDate to = segmentedKey.getSegment().getTo();

                @Override
                protected boolean skip(final FDate element) {
                    return element.isBefore(from) || element.isAfter(to);
                }
            };
        }

        @Override
        protected FDate extractEndTime(final FDate value) {
            return value;
        }

        @Override
        public FDate getFirstAvailableHistoricalSegmentFrom(final String key) {
            if (entities.isEmpty()) {
                return null;
            }
            return segmentFinder.query().getValue(entities.get(0)).getFrom();
        }

        @Override
        public FDate getLastAvailableHistoricalSegmentTo(final String key, final FDate updateTo) {
            if (entities.isEmpty()) {
                return null;
            }
            return segmentFinder.query().getValue(entities.get(entities.size() - 1)).getTo();
        }

        @Override
        protected String getElementsName() {
            return "values";
        }
    };
}

Example 5 with ICloseableIterable

use of de.invesdwin.util.collections.iterable.ICloseableIterable in project invesdwin-context-persistence by subes.

the class ATimeSeriesDBTest method testGetPreviousAndNext.

// CHECKSTYLE:ON
@Test
public void testGetPreviousAndNext() throws IncompleteUpdateFoundException {
    final String key = "asdf";
    final ATimeSeriesDB<String, FDate> table = new ATimeSeriesDB<String, FDate>("testGetPrevious") {

        @Override
        protected ISerde<FDate> newValueSerde() {
            return new TypeDelegateSerde<FDate>(FDate.class);
        }

        @Override
        protected Integer newValueFixedLength() {
            return null;
        }

        @Override
        protected String innerHashKeyToString(final String key) {
            return key;
        }

        @Override
        protected FDate extractEndTime(final FDate value) {
            return value;
        }

        @Override
        protected File getBaseDirectory() {
            return ContextProperties.TEMP_DIRECTORY;
        }
    };
    final List<FDate> dates = new ArrayList<>();
    for (int i = 2000; i <= 2010; i++) {
        dates.add(FDateBuilder.newDate(i));
    }
    new ATimeSeriesUpdater<String, FDate>(key, table) {

        @Override
        protected ICloseableIterable<? extends FDate> getSource(final FDate updateFrom) {
            return WrapperCloseableIterable.maybeWrap(dates);
        }

        @Override
        protected void onUpdateFinished(final Instant updateStart) {
        }

        @Override
        protected void onUpdateStart() {
        }

        @Override
        protected FDate extractEndTime(final FDate element) {
            return element;
        }

        @Override
        protected void onFlush(final int flushIndex, final ATimeSeriesUpdater<String, FDate>.UpdateProgress updateProgress) {
        }

        @Override
        public Percent getProgress() {
            return null;
        }
    }.update();
    for (int i = 1; i < dates.size(); i++) {
        final FDate value = table.getPreviousValue(key, dates.get(dates.size() - 1), i);
        final FDate expectedValue = dates.get(dates.size() - i - 1);
        Assertions.checkEquals(value, expectedValue, i + ": expected [" + expectedValue + "] got [" + value + "]");
    }
    for (int i = 1; i < dates.size(); i++) {
        final FDate value = table.getPreviousValue(key, FDate.MAX_DATE, i);
        final FDate expectedValue = dates.get(dates.size() - i - 1);
        Assertions.checkEquals(value, expectedValue, i + ": expected [" + expectedValue + "] got [" + value + "]");
    }
    for (int i = 1; i < dates.size(); i++) {
        final FDate value = table.getPreviousValue(key, FDate.MIN_DATE, i);
        final FDate expectedValue = dates.get(0);
        Assertions.checkEquals(value, expectedValue, i + ": expected [" + expectedValue + "] got [" + value + "]");
    }
    for (int i = 1; i < dates.size(); i++) {
        final FDate value = table.getNextValue(key, dates.get(0), i);
        final FDate expectedValue = dates.get(i);
        Assertions.checkEquals(value, expectedValue, i + ": expected [" + expectedValue + "] got [" + value + "]");
    }
    for (int i = 1; i < dates.size(); i++) {
        final FDate value = table.getNextValue(key, FDate.MIN_DATE, i);
        final FDate expectedValue = dates.get(i);
        Assertions.checkEquals(value, expectedValue, i + ": expected [" + expectedValue + "] got [" + value + "]");
    }
    for (int i = 1; i < dates.size(); i++) {
        final FDate value = table.getNextValue(key, FDate.MAX_DATE, i);
        final FDate expectedValue = dates.get(dates.size() - 1);
        Assertions.checkEquals(value, expectedValue, i + ": expected [" + expectedValue + "] got [" + value + "]");
    }
}