Examples with ColumnVisibility org.apache.accumulo.core.security.ColumnVisibility used on opensource projects

Example 21 with ColumnVisibility

use of org.apache.accumulo.core.security.ColumnVisibility in project gora by apache.

the class AccumuloStore method deleteByQuery.

@Override
public long deleteByQuery(Query<K, T> query) {
    try {
        Scanner scanner = createScanner(query);
        // add iterator that drops values on the server side
        scanner.addScanIterator(new IteratorSetting(Integer.MAX_VALUE, SortedKeyIterator.class));
        RowIterator iterator = new RowIterator(scanner.iterator());
        long count = 0;
        while (iterator.hasNext()) {
            Iterator<Entry<Key, Value>> row = iterator.next();
            Mutation m = null;
            while (row.hasNext()) {
                Entry<Key, Value> entry = row.next();
                Key key = entry.getKey();
                if (m == null)
                    m = new Mutation(key.getRow());
                // TODO optimize to avoid continually creating column vis? prob does not matter for empty
                m.putDelete(key.getColumnFamily(), key.getColumnQualifier(), new ColumnVisibility(key.getColumnVisibility()), key.getTimestamp());
            }
            getBatchWriter().addMutation(m);
            count++;
        }
        return count;
    } catch (TableNotFoundException e) {
        // TODO return 0?
        LOG.error(e.getMessage(), e);
        return 0;
    } catch (MutationsRejectedException e) {
        LOG.error(e.getMessage(), e);
        return 0;
    } catch (IOException e) {
        LOG.error(e.getMessage(), e);
        return 0;
    }
}