Package org.apache.cassandra.db.filter

Examples of org.apache.cassandra.db.filter.NamesQueryFilter

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        Table table = Table.open(Table.SYSTEM_TABLE);
        SortedSet<byte[]> columns = new TreeSet<byte[]>(new BytesType());
        columns.add(TOKEN);
        columns.add(GENERATION);
        columns.add(CLUSTERNAME);
        QueryFilter filter = new NamesQueryFilter(LOCATION_KEY, new QueryPath(STATUS_CF), columns);
        ColumnFamily cf = table.getColumnFamilyStore(STATUS_CF).getColumnFamily(filter);
        String partitioner = DatabaseDescriptor.getPartitioner().getClass().getName();

        IPartitioner p = StorageService.getPartitioner();
        if (cf == null)
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    {
        Table table = null;
        try
        {
            table = Table.open(Table.SYSTEM_TABLE);
            QueryFilter filter = new NamesQueryFilter(BOOTSTRAP_KEY, new QueryPath(STATUS_CF), BOOTSTRAP);
            ColumnFamily cf = table.getColumnFamilyStore(STATUS_CF).getColumnFamily(filter);
            return cf != null && cf.getColumn(BOOTSTRAP).value()[0] == 1;
        }
        catch (IOException e)
        {
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    private static int maxQueried(ReadCommand command)
    {
        if (command instanceof SliceByNamesReadCommand)
        {
            NamesQueryFilter filter = ((SliceByNamesReadCommand)command).filter;
            return filter.countCQL3Rows() ? 1 : filter.columns.size();
        }
        else
        {
            SliceQueryFilter filter = ((SliceFromReadCommand)command).filter;
            return filter.count;
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        SortedSet<CellName> names = new TreeSet<>(cfs.metadata.comparator);
        for (int i = 0; i < currentValues.length; i++)
            if (currentValues[i] == null)
                names.add(counterUpdateCells.get(i).name);

        ReadCommand cmd = new SliceByNamesReadCommand(getKeyspaceName(), key(), cfs.metadata.cfName, Long.MIN_VALUE, new NamesQueryFilter(names));
        Row row = cmd.getRow(cfs.keyspace);
        ColumnFamily cf = row == null ? null : row.cf;

        for (int i = 0; i < currentValues.length; i++)
        {
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                }
            }

            // avoid changing the filter columns of the original filter
            // (reduceNameFilter removes columns that are known to be irrelevant)
            NamesQueryFilter namesFilter = (NamesQueryFilter) filter.filter;
            TreeSet<CellName> filterColumns = new TreeSet<>(namesFilter.columns);
            QueryFilter reducedFilter = new QueryFilter(filter.key, filter.cfName, namesFilter.withUpdatedColumns(filterColumns), filter.timestamp);

            /* add the SSTables on disk */
            Collections.sort(view.sstables, SSTableReader.maxTimestampComparator);

            // read sorted sstables
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            {
                CellNameType columnType = new SimpleDenseCellNameType(metadata.comparator.subtype(parent.isSetSuper_column() ? 1 : 0));
                SortedSet<CellName> s = new TreeSet<CellName>(columnType);
                for (ByteBuffer bb : predicate.column_names)
                    s.add(columnType.cellFromByteBuffer(bb));
                filter = SuperColumns.fromSCNamesFilter(metadata.comparator, parent.bufferForSuper_column(), new NamesQueryFilter(s));
            }
            else
            {
                SortedSet<CellName> s = new TreeSet<CellName>(metadata.comparator);
                for (ByteBuffer bb : predicate.column_names)
                    s.add(metadata.comparator.cellFromByteBuffer(bb));
                filter = new NamesQueryFilter(s);
            }
        }
        else
        {
            filter = toInternalFilter(metadata, parent, predicate.slice_range);
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            if (metadata.isSuper())
            {
                CellNameType columnType = new SimpleDenseCellNameType(metadata.comparator.subtype(column_path.column == null ? 0 : 1));
                SortedSet<CellName> names = new TreeSet<CellName>(columnType);
                names.add(columnType.cellFromByteBuffer(column_path.column == null ? column_path.super_column : column_path.column));
                filter = SuperColumns.fromSCNamesFilter(metadata.comparator, column_path.column == null ? null : column_path.bufferForSuper_column(), new NamesQueryFilter(names));
            }
            else
            {
                SortedSet<CellName> names = new TreeSet<CellName>(metadata.comparator);
                names.add(metadata.comparator.cellFromByteBuffer(column_path.column));
                filter = new NamesQueryFilter(names);
            }

            long now = System.currentTimeMillis();
            ReadCommand command = ReadCommand.create(keyspace, key, column_path.column_family, now, filter);
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        public IDiskAtomFilter readFilter()
        {
            return expected == null || expected.isEmpty()
                 ? new SliceQueryFilter(ColumnSlice.ALL_COLUMNS_ARRAY, false, 1)
                 : new NamesQueryFilter(ImmutableSortedSet.copyOf(expected.getComparator(), expected.getColumnNames()));
        }
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        {

            SortedSet<CellName> ss = new TreeSet<CellName>(comparator);
            for (ByteBuffer bb : sp.column_names)
                ss.add(comparator.cellFromByteBuffer(bb));
            filter = new NamesQueryFilter(ss);
        }
        else
        {
            filter = new SliceQueryFilter(comparator.fromByteBuffer(sr.start),
                                          comparator.fromByteBuffer(sr.finish),
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        ReadCommand rm, rm2;
        DecoratedKey dk = Util.dk("row1");
        long ts = System.currentTimeMillis();

        rm = new SliceByNamesReadCommand("Keyspace1", dk.key, "Standard1", ts, new NamesQueryFilter(colList));
        rm2 = serializeAndDeserializeReadMessage(rm);
        assert rm2.toString().equals(rm.toString());

        rm = new SliceFromReadCommand("Keyspace1", dk.key, "Standard1", ts, new SliceQueryFilter(Composites.EMPTY, Composites.EMPTY, true, 2));
        rm2 = serializeAndDeserializeReadMessage(rm);
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Related Classes of org.apache.cassandra.db.filter.NamesQueryFilter

  • org.apache.cassandra.db.BatchlogManager
  • org.apache.cassandra.db.CollationController
  • org.apache.cassandra.db.ColumnFamilyStore
  • org.apache.cassandra.db.ColumnFamilyStoreTest
  • org.apache.cassandra.db.columniterator.SSTableNamesIterator
  • org.apache.cassandra.db.CommitLogTest
  • org.apache.cassandra.db.composites.CellName
  • org.apache.cassandra.db.CounterMutation
  • org.apache.cassandra.db.HintedHandOffManager
  • org.apache.cassandra.db.IColumn
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