return extractNodes;
}
@Override
public KeyRange getKeyRange(CompareOp op, Expression rhs) {
PDataType type = getColumn().getDataType();
ImmutableBytesWritable ptr = new ImmutableBytesWritable();
rhs.evaluate(null, ptr);
byte[] key = ByteUtil.copyKeyBytesIfNecessary(ptr);
// No need to take into account SortOrder, because ROUND
// always forces the value to be in ascending order
PDataCodec codec = getKeyRangeCodec(type);
int offset = ByteUtil.isInclusive(op) ? 1 : 0;
long value = codec.decodeLong(key, 0, SortOrder.getDefault());
byte[] nextKey = new byte[type.getByteSize()];
switch (op) {
case EQUAL:
// If the value isn't evenly divisible by the div amount, then it
// can't possibly be equal to any rounded value. For example, if you
// had ROUND(dateCol,'DAY') = TO_DATE('2013-01-01 23:00:00')
// it could never be equal, since date constant isn't at a day
// boundary.
if (value % divBy != 0) {
return KeyRange.EMPTY_RANGE;
}
codec.encodeLong(value + divBy, nextKey, 0);
return type.getKeyRange(key, true, nextKey, false);
case GREATER:
case GREATER_OR_EQUAL:
codec.encodeLong((value + divBy - offset)/divBy*divBy, nextKey, 0);
return type.getKeyRange(nextKey, true, KeyRange.UNBOUND, false);
case LESS:
case LESS_OR_EQUAL:
codec.encodeLong((value + divBy - (1 -offset))/divBy*divBy, nextKey, 0);
return type.getKeyRange(KeyRange.UNBOUND, false, nextKey, false);
default:
return childPart.getKeyRange(op, rhs);
}
}
};