@Override

    public List<Row> search(ExtendedFilter filter)

    {

        assert filter.getClause() != null && !filter.getClause().isEmpty();

        final CompositesIndex index = (CompositesIndex)indexManager.getIndexForColumn(primary.column);

        // TODO: this should perhaps not open and maintain a writeOp for the full duration, but instead only *try* to delete stale entries, without blocking if there's no room

        // as it stands, we open a writeOp and keep it open for the duration to ensure that should this CF get flushed to make room we don't block the reclamation of any room being made

        try (OpOrder.Group writeOp = baseCfs.keyspace.writeOrder.start(); OpOrder.Group baseOp = baseCfs.readOrdering.start(); OpOrder.Group indexOp = index.getIndexCfs().readOrdering.start())

        {

    @Override

    public List<Row> search(ExtendedFilter filter)

    {

        assert filter.getClause() != null && !filter.getClause().isEmpty();

        final CompositesIndex index = (CompositesIndex)indexManager.getIndexForColumn(primary.column);

        // TODO: this should perhaps not open and maintain a writeOp for the full duration, but instead only *try* to delete stale entries, without blocking if there's no room

        // as it stands, we open a writeOp and keep it open for the duration to ensure that should this CF get flushed to make room we don't block the reclamation of any room being made

        try (OpOrder.Group writeOp = baseCfs.keyspace.writeOrder.start(); OpOrder.Group baseOp = baseCfs.readOrdering.start(); OpOrder.Group indexOp = index.getIndexCfs().readOrdering.start())

        {

        for (ColumnFamilyStore cfs : indexedCFS.concatWithIndexes())

            clearAndLoad(cfs);

        // query using index to see if sstable for secondary index opens

        List<IndexExpression> clause = Arrays.asList(expr);

        Range<RowPosition> range = Util.range("", "");

        List<Row> rows = indexedCFS.search(range, clause, new IdentityQueryFilter(), 100);

        assert rows.size() == 1;

    }

        for (ColumnFamilyStore cfs : indexedCFS.concatWithIndexes())

            clearAndLoad(cfs);

        // query using index to see if sstable for secondary index opens

        List<IndexExpression> clause = Arrays.asList(expr);

        Range<RowPosition> range = Util.range("", "");

        List<Row> rows = indexedCFS.search(range, clause, new IdentityQueryFilter(), 100);

        assert rows.size() == 1;

    }

     * @return The {@link Search} contained in the specified list of {@link IndexExpression}s.

     */

    private Search search(List<IndexExpression> clause)

    {

        String json = UTF8Type.instance.compose(indexedExpression.value);

        return Search.fromJson(json);

    }