Examples with ResultTuple org.apache.phoenix.schema.tuple.ResultTuple used on opensource projects

Example 11 with ResultTuple

use of org.apache.phoenix.schema.tuple.ResultTuple in project phoenix by apache.

the class NonAggregateRegionScannerFactory method getOffsetScanner.

private RegionScanner getOffsetScanner(final RegionScanner s, final OffsetResultIterator iterator, final boolean isLastScan) throws IOException {
    final Tuple firstTuple;
    final Region region = getRegion();
    region.startRegionOperation();
    try {
        Tuple tuple = iterator.next();
        if (tuple == null && !isLastScan) {
            List<KeyValue> kvList = new ArrayList<KeyValue>(1);
            KeyValue kv = new KeyValue(QueryConstants.OFFSET_ROW_KEY_BYTES, QueryConstants.OFFSET_FAMILY, QueryConstants.OFFSET_COLUMN, PInteger.INSTANCE.toBytes(iterator.getRemainingOffset()));
            kvList.add(kv);
            Result r = new Result(kvList);
            firstTuple = new ResultTuple(r);
        } else {
            firstTuple = tuple;
        }
    } catch (Throwable t) {
        ServerUtil.throwIOException(getRegion().getRegionInfo().getRegionNameAsString(), t);
        return null;
    } finally {
        region.closeRegionOperation();
    }
    return new BaseRegionScanner(s) {

        private Tuple tuple = firstTuple;

        @Override
        public boolean isFilterDone() {
            return tuple == null;
        }

        @Override
        public boolean next(List<Cell> results) throws IOException {
            try {
                if (isFilterDone()) {
                    return false;
                }
                for (int i = 0; i < tuple.size(); i++) {
                    results.add(tuple.getValue(i));
                }
                tuple = iterator.next();
                return !isFilterDone();
            } catch (Throwable t) {
                ServerUtil.throwIOException(getRegion().getRegionInfo().getRegionNameAsString(), t);
                return false;
            }
        }

        @Override
        public void close() throws IOException {
            try {
                s.close();
            } finally {
                try {
                    if (iterator != null) {
                        iterator.close();
                    }
                } catch (SQLException e) {
                    ServerUtil.throwIOException(getRegion().getRegionInfo().getRegionNameAsString(), e);
                }
            }
        }
    };
}