List of usage examples for org.joda.time DateTimeField add
public abstract long add(long instant, long value);
From source file:de.openali.odysseus.chart.ext.base.axisrenderer.DateTimeTickCalculator.java
License:Open Source License
private long getFirstRollValue(final IDateTimeAxisField axisField, final long start, final long end) { final DateTimeZone jodaTZ = DateTimeZone.forTimeZone(KalypsoCorePlugin.getDefault().getTimeZone()); final DateTimeField field = axisField.getFieldType().getField(GregorianChronology.getInstance(jodaTZ)); final long firstRoll = field.roundFloor(start); if (firstRoll + end - start <= start) // out of range, precision too small so we return without adjustment // maybe try roundCeil instead return start; final int fieldValue = field.get(firstRoll); if (fieldValue == 0) return firstRoll; final int[] beginners = axisField.getBeginners(); for (int i = 1; i < beginners.length; i++) { if (fieldValue < beginners[i]) { return field.add(firstRoll, beginners[i - 1] - fieldValue); }/*from w w w . j av a2 s . c o m*/ } return field.add(firstRoll, -fieldValue); }
From source file:org.graylog2.indexer.rotation.strategies.TimeBasedRotationStrategy.java
License:Open Source License
/** * Determines the starting point ("anchor") for a period. * * To produce repeatable rotation points in time, the period is "snapped" to a "grid" of time. * For example, an hourly index rotation would be anchored to the last full hour, instead of happening at whatever minute * the first rotation was started.//w w w. jav a 2s . c o m * * This "snapping" is done accordingly with the other parts of a period. * * For highly irregular periods (those that do not have a small zero component) * * @param period the rotation period * @return the anchor DateTime to calculate rotation periods from */ protected static DateTime determineRotationPeriodAnchor(@Nullable DateTime lastAnchor, Period period) { final Period normalized = period.normalizedStandard(); int years = normalized.getYears(); int months = normalized.getMonths(); int weeks = normalized.getWeeks(); int days = normalized.getDays(); int hours = normalized.getHours(); int minutes = normalized.getMinutes(); int seconds = normalized.getSeconds(); if (years == 0 && months == 0 && weeks == 0 && days == 0 && hours == 0 && minutes == 0 && seconds == 0) { throw new IllegalArgumentException("Invalid rotation period specified"); } // find the largest non-zero stride in the period. that's our anchor type. statement order matters here! DateTimeFieldType largestStrideType = null; if (seconds > 0) largestStrideType = secondOfMinute(); if (minutes > 0) largestStrideType = minuteOfHour(); if (hours > 0) largestStrideType = hourOfDay(); if (days > 0) largestStrideType = dayOfMonth(); if (weeks > 0) largestStrideType = weekOfWeekyear(); if (months > 0) largestStrideType = monthOfYear(); if (years > 0) largestStrideType = year(); if (largestStrideType == null) { throw new IllegalArgumentException("Could not determine rotation stride length."); } final DateTime anchorTime = MoreObjects.firstNonNull(lastAnchor, Tools.nowUTC()); final DateTimeField field = largestStrideType.getField(anchorTime.getChronology()); // use normalized here to make sure we actually have the largestStride type available! see https://github.com/Graylog2/graylog2-server/issues/836 int periodValue = normalized.get(largestStrideType.getDurationType()); final long fieldValue = field.roundFloor(anchorTime.getMillis()); final int fieldValueInUnit = field.get(fieldValue); if (periodValue == 0) { // https://github.com/Graylog2/graylog2-server/issues/836 log.warn( "Determining stride length failed because of a 0 period. Defaulting back to 1 period to avoid crashing, but this is a bug!"); periodValue = 1; } final long difference = (fieldValueInUnit % periodValue); final long newValue = field.add(fieldValue, -1 * difference); return new DateTime(newValue, DateTimeZone.UTC); }
From source file:org.graylog2.indexer.rotation.TimeBasedRotationStrategy.java
License:Open Source License
/** * Determines the starting point ("anchor") for a period. * * To produce repeatable rotation points in time, the period is "snapped" to a "grid" of time. * For example, an hourly index rotation would be anchored to the last full hour, instead of happening at whatever minute * the first rotation was started./*from w w w. jav a 2s. c om*/ * * This "snapping" is done accordingly with the other parts of a period. * * For highly irregular periods (those that do not have a small zero component) * * @param period the rotation period * @return the anchor DateTime to calculate rotation periods from */ protected static DateTime determineRotationPeriodAnchor(Period period) { final Period normalized = period.normalizedStandard(); int years = normalized.getYears(); int months = normalized.getMonths(); int weeks = normalized.getWeeks(); int days = normalized.getDays(); int hours = normalized.getHours(); int minutes = normalized.getMinutes(); int seconds = normalized.getSeconds(); if (years == 0 && months == 0 && weeks == 0 && days == 0 && hours == 0 && minutes == 0 && seconds == 0) { throw new IllegalArgumentException("Invalid rotation period specified"); } // find the largest non-zero stride in the period. that's our anchor type. statement order matters here! DateTimeFieldType largestStrideType = null; if (seconds > 0) largestStrideType = secondOfMinute(); if (minutes > 0) largestStrideType = minuteOfHour(); if (hours > 0) largestStrideType = hourOfDay(); if (days > 0) largestStrideType = dayOfMonth(); if (weeks > 0) largestStrideType = weekOfWeekyear(); if (months > 0) largestStrideType = monthOfYear(); if (years > 0) largestStrideType = year(); if (largestStrideType == null) { throw new IllegalArgumentException("Could not determine rotation stride length."); } final DateTime now = Tools.iso8601(); final DateTimeField field = largestStrideType.getField(now.getChronology()); // use normalized here to make sure we actually have the largestStride type available! see https://github.com/Graylog2/graylog2-server/issues/836 int periodValue = normalized.get(largestStrideType.getDurationType()); final long fieldValue = field.roundFloor(now.getMillis()); final int fieldValueInUnit = field.get(fieldValue); if (periodValue == 0) { // https://github.com/Graylog2/graylog2-server/issues/836 log.warn( "Determining stride length failed because of a 0 period. Defaulting back to 1 period to avoid crashing, but this is a bug!"); periodValue = 1; } final long difference = (fieldValueInUnit % periodValue); final long newValue = field.add(fieldValue, -1 * difference); return new DateTime(newValue, DateTimeZone.UTC); }