Package org.apache.cassandra.db.filter

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

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            if (currentSlice == null)
            {
                if (idx >= slices.length)
                    return endOfData();

                ColumnSlice slice = slices[idx++];
                // The first idx to include
                int startIdx = slice.start.remaining() == 0 ? 0 : binarySearch(list, comparator, slice.start, previousSliceEnd);
                if (startIdx < 0)
                    startIdx = -startIdx - 1;
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        int[] values = new int[]{ 1, 2, 3, 5, 9 };

        for (int i = 0; i < values.length; ++i)
            map.addColumn(new Column(ByteBufferUtil.bytes(values[reversed ? values.length - 1 - i : i])), HeapAllocator.instance);

        assertSame(new int[]{ 3, 2, 1 }, map.reverseIterator(new ColumnSlice[]{ new ColumnSlice(ByteBufferUtil.bytes(3), ByteBufferUtil.EMPTY_BYTE_BUFFER) }));
        assertSame(new int[]{ 3, 2, 1 }, map.reverseIterator(new ColumnSlice[]{ new ColumnSlice(ByteBufferUtil.bytes(4), ByteBufferUtil.EMPTY_BYTE_BUFFER) }));

        assertSame(map.iterator(), map.iterator(ColumnSlice.ALL_COLUMNS_ARRAY));
    }
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        }

        protected Iterator<Column> collectionColumns(ColumnNameBuilder collectionPrefix, ColumnFamily cf, final long now)
        {
            // We are testing for collection equality, so we need to have the expected values *and* only those.
            ColumnSlice[] collectionSlice = new ColumnSlice[]{ new ColumnSlice(collectionPrefix.build(), collectionPrefix.buildAsEndOfRange()) };
            // Filter live columns, this makes things simpler afterwards
            return Iterators.filter(cf.iterator(collectionSlice), new Predicate<Column>()
            {
                public boolean apply(Column c)
                {
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        for (ByteBuffer name : toRead)
        {
            ColumnNameBuilder prefix = updatePrefixFor(name, clusteringPrefix);
            ByteBuffer start = prefix.copy().add(name).build();
            ByteBuffer finish = prefix.copy().add(name).buildAsEndOfRange();
            slices[i++] = new ColumnSlice(start, finish);
        }

        List<ReadCommand> commands = new ArrayList<ReadCommand>(partitionKeys.size());
        long now = System.currentTimeMillis();
        for (ByteBuffer key : partitionKeys)
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            if (currentSlice == null)
            {
                if (idx >= slices.length)
                    return endOfData();

                ColumnSlice slice = slices[idx++];
                // The first idx to include
                int startIdx = slice.start.remaining() == 0 ? 0 : binarySearch(list, comparator, slice.start, previousSliceEnd);
                if (startIdx < 0)
                    startIdx = -startIdx - 1;
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        int[] values = new int[]{ 1, 2, 3, 5, 9 };

        for (int i = 0; i < values.length; ++i)
            map.addColumn(new Column(ByteBufferUtil.bytes(values[reversed ? values.length - 1 - i : i])), HeapAllocator.instance);

        assertSame(new int[]{ 3, 2, 1 }, map.reverseIterator(new ColumnSlice[]{ new ColumnSlice(ByteBufferUtil.bytes(3), ByteBufferUtil.EMPTY_BYTE_BUFFER) }));
        assertSame(new int[]{ 3, 2, 1 }, map.reverseIterator(new ColumnSlice[]{ new ColumnSlice(ByteBufferUtil.bytes(4), ByteBufferUtil.EMPTY_BYTE_BUFFER) }));

        assertSame(map.iterator(), map.iterator(ColumnSlice.ALL_COLUMNS_ARRAY));
    }
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    {
        CompositeType comparator = CompositeType.getInstance(Int32Type.instance, Int32Type.instance, Int32Type.instance);

        // all slices intersect
        SliceQueryFilter filter = new SliceQueryFilter(new ColumnSlice[]{
            new ColumnSlice(composite(1, 0, 0), composite(2, 0, 0)),
            new ColumnSlice(composite(3, 0, 0), composite(4, 0, 0)),
            new ColumnSlice(composite(5, 0, 0), composite(6, 0, 0)),
        }, false, 1);

        // first slice doesn't intersect
        assertTrue(comparator.intersects(columnNames(0, 0, 0), columnNames(7, 0, 0), filter));
        filter = new SliceQueryFilter(new ColumnSlice[]{
                new ColumnSlice(composite(1, 0, 0), composite(2, 0, 0)),
                new ColumnSlice(composite(3, 0, 0), composite(4, 0, 0)),
                new ColumnSlice(composite(5, 0, 0), composite(6, 0, 0)),
        }, false, 1);
        assertTrue(comparator.intersects(columnNames(3, 0, 0), columnNames(7, 0, 0), filter));

        // first two slices don't intersect
        assertTrue(comparator.intersects(columnNames(0, 0, 0), columnNames(7, 0, 0), filter));
        filter = new SliceQueryFilter(new ColumnSlice[]{
                new ColumnSlice(composite(1, 0, 0), composite(2, 0, 0)),
                new ColumnSlice(composite(3, 0, 0), composite(4, 0, 0)),
                new ColumnSlice(composite(5, 0, 0), composite(6, 0, 0)),
        }, false, 1);
        assertTrue(comparator.intersects(columnNames(5, 0, 0), columnNames(7, 0, 0), filter));

        // none of the slices intersect
        assertTrue(comparator.intersects(columnNames(0, 0, 0), columnNames(7, 0, 0), filter));
        filter = new SliceQueryFilter(new ColumnSlice[]{
                new ColumnSlice(composite(1, 0, 0), composite(2, 0, 0)),
                new ColumnSlice(composite(3, 0, 0), composite(4, 0, 0)),
                new ColumnSlice(composite(5, 0, 0), composite(6, 0, 0)),
        }, false, 1);
        assertFalse(comparator.intersects(columnNames(7, 0, 0), columnNames(8, 0, 0), filter));
    }
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            if (currentSlice == null)
            {
                if (idx >= slices.length)
                    return endOfData();

                ColumnSlice slice = slices[idx++];
                // The first idx to include
                int startIdx = slice.start.remaining() == 0 ? 0 : binarySearch(list, comparator, slice.start, previousSliceEnd);
                if (startIdx < 0)
                    startIdx = -startIdx - 1;
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        int i = 0;
        for (ByteBuffer name : toRead)
        {
            ByteBuffer start = builder.copy().add(name).build();
            ByteBuffer finish = builder.copy().add(name).buildAsEndOfRange();
            slices[i++] = new ColumnSlice(start, finish);
        }

        List<ReadCommand> commands = new ArrayList<ReadCommand>(keys.size());
        for (ByteBuffer key : keys)
            commands.add(new SliceFromReadCommand(keyspace(),
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            map.addColumn(new Column(ByteBufferUtil.bytes(values[reversed ? values.length - 1 - i : i])), HeapAllocator.instance);

        //assertSame(new int[]{ 3, 5, 9 }, map.iterator(ByteBufferUtil.bytes(3)));
        //assertSame(new int[]{ 5, 9 }, map.iterator(ByteBufferUtil.bytes(4)));

        assertSame(new int[]{ 3, 2, 1 }, map.reverseIterator(new ColumnSlice[]{ new ColumnSlice(ByteBufferUtil.bytes(3), ByteBufferUtil.EMPTY_BYTE_BUFFER) }));
        assertSame(new int[]{ 3, 2, 1 }, map.reverseIterator(new ColumnSlice[]{ new ColumnSlice(ByteBufferUtil.bytes(4), ByteBufferUtil.EMPTY_BYTE_BUFFER) }));

        assertSame(map.iterator(), map.iterator(ColumnSlice.ALL_COLUMNS_ARRAY));
    }
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Related Classes of org.apache.cassandra.db.filter.ColumnSlice

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  • org.apache.cassandra.cql3.ColumnCondition$Bound
  • org.apache.cassandra.cql3.ColumnCondition$WithVariables
  • org.apache.cassandra.cql3.statements.ModificationStatement
  • org.apache.cassandra.db.ArrayBackedSortedColumns$SlicesIterator
  • org.apache.cassandra.db.ArrayBackedSortedColumnsTest
  • org.apache.cassandra.db.AtomicBTreeColumns$Holder
  • org.apache.cassandra.db.AtomicBTreeColumns$SliceIterator
  • org.apache.cassandra.db.ColumnFamilyStoreTest
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