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

org.apache.cassandra.db.filter.IDiskAtomFilter
Given an implementation-specific description of what columns to look for, provides methods to extract the desired columns from a Memtable, SSTable, or SuperColumn. Either the get*ColumnIterator methods will be called, or filterSuperColumn, but not both on the same object. QueryFilter takes care of putting the two together if subcolumn filtering needs to be done, based on the querypath that it knows (but that IFilter implementations are oblivious to).

        return filter;
    }


    private IDiskAtomFilter toInternalFilter(CFMetaData metadata, ColumnParent parent, SlicePredicate predicate)
    {
        IDiskAtomFilter filter;
        if (predicate.column_names != null)
        {
            if (metadata.isSuper())
            {
                CompositeType type = (CompositeType)metadata.comparator;

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        org.apache.cassandra.db.ConsistencyLevel consistencyLevel = ThriftConversion.fromThrift(consistency_level);
        consistencyLevel.validateForRead(keyspace);


        List<ReadCommand> commands = new ArrayList<ReadCommand>(keys.size());
        IDiskAtomFilter filter = toInternalFilter(metadata, column_parent, predicate);


        for (ByteBuffer key: keys)
        {
            ThriftValidation.validateKey(metadata, key);
            // Note that we should not share a slice filter amongst the command, due to SliceQueryFilter not  being immutable
            // due to its columnCounter used by the lastCounted() method (also see SelectStatement.getSliceCommands)
            commands.add(ReadCommand.create(keyspace, key, column_parent.getColumn_family(), timestamp, filter.cloneShallow()));
        }


        return getSlice(commands, column_parent.isSetSuper_column(), consistencyLevel);
    }

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            org.apache.cassandra.db.ConsistencyLevel consistencyLevel = ThriftConversion.fromThrift(consistency_level);
            consistencyLevel.validateForRead(keyspace);


            ThriftValidation.validateKey(metadata, key);


            IDiskAtomFilter filter;
            if (metadata.isSuper())
            {
                CompositeType type = (CompositeType)metadata.comparator;
                SortedSet names = new TreeSet<ByteBuffer>(column_path.column == null ? type.types.get(0) : type.types.get(1));
                names.add(column_path.column == null ? column_path.super_column : column_path.column);

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            }
            long now = System.currentTimeMillis();
            schedule(DatabaseDescriptor.getRangeRpcTimeout());
            try
            {
                IDiskAtomFilter filter = ThriftValidation.asIFilter(predicate, metadata, column_parent.super_column);
                rows = StorageProxy.getRangeSlice(new RangeSliceCommand(keyspace,
                                                                        column_parent.column_family,
                                                                        now,
                                                                        filter,
                                                                        bounds,

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            List<Row> rows;
            long now = System.currentTimeMillis();
            schedule(DatabaseDescriptor.getRangeRpcTimeout());
            try
            {
                IDiskAtomFilter filter = ThriftValidation.asIFilter(predicate, metadata, null);
                rows = StorageProxy.getRangeSlice(new RangeSliceCommand(keyspace, column_family, now, filter, bounds, null, range.count, true, true), consistencyLevel);
            }
            finally
            {
                release();

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            IPartitioner p = StorageService.getPartitioner();
            AbstractBounds<RowPosition> bounds = new Bounds<RowPosition>(RowPosition.forKey(index_clause.start_key, p),
                                                                         p.getMinimumToken().minKeyBound());


            IDiskAtomFilter filter = ThriftValidation.asIFilter(column_predicate, metadata, column_parent.super_column);
            long now = System.currentTimeMillis();
            RangeSliceCommand command = new RangeSliceCommand(keyspace,
                                                              column_parent.column_family,
                                                              now,
                                                              filter,

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            long val = key.hashCode();
            IndexExpression expr = new IndexExpression(ByteBufferUtil.bytes("birthdate"),
                                                              IndexOperator.EQ,
                                                              ByteBufferUtil.bytes(val));
            List<IndexExpression> clause = Arrays.asList(expr);
            IDiskAtomFilter filter = new IdentityQueryFilter();
            Range<RowPosition> range = Util.range("", "");
            List<Row> rows = cfs.search(range, clause, filter, 100);
            assertEquals(1, rows.size());
            assert rows.get(0).key.key.equals(ByteBufferUtil.bytes(key));
        }

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            Thread.sleep(10);


        // verify we get it back w/ index query too
        IndexExpression expr = new IndexExpression(COLUMN, IndexOperator.EQ, VALUE);
        List<IndexExpression> clause = Arrays.asList(expr);
        IDiskAtomFilter filter = new IdentityQueryFilter();
        IPartitioner p = StorageService.getPartitioner();
        Range<RowPosition> range = Util.range("", "");
        rows = table.getColumnFamilyStore(CF1).search(clause, range, Integer.MAX_VALUE, filter);
        assertEquals(LOOPS, rows.size());

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    {
        if (key.remaining() == 0)
            return Composites.EMPTY;


        Composite prefix;
        IDiskAtomFilter columnFilter = filter.columnFilter(key);
        if (columnFilter instanceof SliceQueryFilter)
        {
            SliceQueryFilter sqf = (SliceQueryFilter)columnFilter;
            prefix = index.makeIndexColumnPrefix(key, isStart ? sqf.start() : sqf.finish());
        }

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                        if (data == null)
                            data = ArrayBackedSortedColumns.factory.create(baseCfs.metadata);


                        // as in CFS.filter - extend the filter to ensure we include the columns
                        // from the index expressions, just in case they weren't included in the initialFilter
                        IDiskAtomFilter extraFilter = filter.getExtraFilter(dk, data);
                        if (extraFilter != null)
                        {
                            ColumnFamily cf = baseCfs.getColumnFamily(new QueryFilter(dk, baseCfs.name, extraFilter, filter.timestamp));
                            if (cf != null)
                                data.addAll(cf);

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