public static TimeRange getDescTimeRange(
KeyRange lowestKeyRange, KeyRange highestKeyRange, Field f) throws IOException {
boolean lowerUnbound = lowestKeyRange.lowerUnbound();
boolean lowerInclusive = lowestKeyRange.isLowerInclusive();
boolean upperUnbound = highestKeyRange.upperUnbound();
boolean upperInclusive = highestKeyRange.isUpperInclusive();
long low =
lowerUnbound
? -1
: f.getDataType()
.getCodec()
.decodeLong(lowestKeyRange.getLowerRange(), 0, SortOrder.DESC);
long high =
upperUnbound
? -1
: f.getDataType()
.getCodec()
.decodeLong(highestKeyRange.getUpperRange(), 0, SortOrder.DESC);
long newHigh;
long newLow;
if (!lowerUnbound && !upperUnbound) {
newHigh = lowerInclusive ? safelyIncrement(low) : low;
newLow = upperInclusive ? high : safelyIncrement(high);
return new TimeRange(newLow, newHigh);
} else if (!lowerUnbound && upperUnbound) {
newHigh = lowerInclusive ? safelyIncrement(low) : low;
newLow = 0;
return new TimeRange(newLow, newHigh);
} else if (lowerUnbound && !upperUnbound) {
newLow = upperInclusive ? high : safelyIncrement(high);
newHigh = HConstants.LATEST_TIMESTAMP;
return new TimeRange(newLow, newHigh);
} else {
newLow = 0;
newHigh = HConstants.LATEST_TIMESTAMP;
return new TimeRange(newLow, newHigh);
}
}
/**
* Converts a partially qualified KeyRange into a KeyRange with a inclusive lower bound and an
* exclusive upper bound, widening as necessary.
*/
public static KeyRange convertToInclusiveExclusiveRange(
KeyRange partialRange, RowKeySchema schema, ImmutableBytesWritable ptr) {
// Ensure minMaxRange is lower inclusive and upper exclusive, as that's
// what we need to intersect against for the HBase scan.
byte[] lowerRange = partialRange.getLowerRange();
if (!partialRange.lowerUnbound()) {
if (!partialRange.isLowerInclusive()) {
lowerRange = ScanUtil.nextKey(lowerRange, schema, ptr);
}
}
byte[] upperRange = partialRange.getUpperRange();
if (!partialRange.upperUnbound()) {
if (partialRange.isUpperInclusive()) {
upperRange = ScanUtil.nextKey(upperRange, schema, ptr);
}
}
if (partialRange.getLowerRange() != lowerRange || partialRange.getUpperRange() != upperRange) {
partialRange = KeyRange.getKeyRange(lowerRange, upperRange);
}
return partialRange;
}
private static TimeRange getAscTimeRange(KeyRange lowestRange, KeyRange highestRange, Field f)
throws IOException {
long low;
long high;
if (lowestRange.lowerUnbound()) {
low = 0;
} else {
long lowerRange =
f.getDataType().getCodec().decodeLong(lowestRange.getLowerRange(), 0, SortOrder.ASC);
low = lowestRange.isLowerInclusive() ? lowerRange : safelyIncrement(lowerRange);
}
if (highestRange.upperUnbound()) {
high = HConstants.LATEST_TIMESTAMP;
} else {
long upperRange =
f.getDataType().getCodec().decodeLong(highestRange.getUpperRange(), 0, SortOrder.ASC);
if (highestRange.isUpperInclusive()) {
high = safelyIncrement(upperRange);
} else {
high = upperRange;
}
}
return new TimeRange(low, high);
}
