Examples of org.apache.cassandra.db.Cell

org.apache.cassandra.db.Cell
Cell is immutable, which prevents all kinds of confusion in a multithreaded environment.

            }


            protected Cell getReduced()
            {
                assert current != null;
                Cell toReturn = current;
                current = null;
                return toReturn;
            }


            @Override

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            {
                if (next == null)
                    getNext();


                assert next != null;
                Cell toReturn = next;
                next = null;
                return toReturn;
            }


            private void getNext()

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                AbstractType<?> validator = null;
                if (def == null)
                {
                    // This can't happen with CQL3 as this should be rejected upfront. For thrift however,
                    // cell name are not predefined. But that means the cell name correspond to an internal one.
                    Cell cell = data.getColumn(data.getComparator().cellFromByteBuffer(expression.column));
                    if (cell != null)
                    {
                        dataValue = cell.value();
                        validator = data.metadata().getDefaultValidator();
                    }
                }
                else
                {

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            {
                // get a slice of the collection cells
                Iterator<Cell> iter = data.iterator(new ColumnSlice[]{ data.getComparator().create(prefix, def).slice() });
                while (iter.hasNext())
                {
                    Cell cell = iter.next();
                    if (type.kind == CollectionType.Kind.SET)
                    {
                        if (type.nameComparator().compare(cell.name().collectionElement(), expr.value) == 0)
                            return true;
                    }
                    else
                    {
                        if (type.valueComparator().compare(cell.value(), expr.value) == 0)
                            return true;
                    }
                }


                return false;

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                case REGULAR:
                    CellName cname = prefix == null
                                   ? data.getComparator().cellFromByteBuffer(def.name.bytes)
                                   : data.getComparator().create(prefix, def);


                    Cell cell = data.getColumn(cname);
                    return cell == null ? null : cell.value();
                case COMPACT_VALUE:
                    assert data.getColumnCount() == 1;
                    return data.getSortedColumns().iterator().next().value();
            }
            throw new AssertionError();

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        OnDiskAtomIterator iter = qf.getSSTableColumnIterator(reader);
        ColumnFamily cf = cloneForAdditions(iter);
        while (iter.hasNext()) cf.addAtom(iter.next());
        assert cf.getColumn(Util.cellname("colAA")).value().equals(hexToBytes("76616c4141"));
        assert !(cf.getColumn(Util.cellname("colAA")) instanceof BufferDeletedCell);
        Cell expCol = cf.getColumn(Util.cellname("colAC"));
        assert expCol.value().equals(hexToBytes("76616c4143"));
        assert expCol instanceof ExpiringCell;
        assert ((ExpiringCell)expCol).getTimeToLive() == 42 && expCol.getLocalDeletionTime() == 2000000000;
    }

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        ColumnFamily cf = cloneForAdditions(iter);
        while (iter.hasNext())
            cf.addAtom(iter.next());
        assert cf.getColumn(Util.cellname("colAA")).value().equals(hexToBytes("76616c4141"));
        assert !(cf.getColumn(Util.cellname("colAA")) instanceof BufferDeletedCell);
        Cell expCol = cf.getColumn(Util.cellname("colAC"));
        assert expCol.value().equals(hexToBytes("76616c4143"));
        assert expCol instanceof ExpiringCell;
        assert ((ExpiringCell) expCol).getTimeToLive() == 42 && expCol.getLocalDeletionTime() == 2000000000;
    }

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        assertEquals(cf.deletionInfo(), new DeletionInfo(0, 0));
        while (iter.hasNext())
            cf.addAtom(iter.next());
        assert cf.getColumn(Util.cellname("colAA")).value().equals(hexToBytes("76616c4141"));
        assert !(cf.getColumn(Util.cellname("colAA")) instanceof BufferDeletedCell);
        Cell expCol = cf.getColumn(Util.cellname("colAC"));
        assert expCol.value().equals(hexToBytes("76616c4143"));
        assert expCol instanceof ExpiringCell;
        assert ((ExpiringCell) expCol).getTimeToLive() == 42 && expCol.getLocalDeletionTime() == 2000000000;
    }

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        SSTableReader reader = SSTableReader.open(Descriptor.fromFilename(tempSS.getPath()));
        QueryFilter qf = QueryFilter.getIdentityFilter(Util.dk("rowA"), "Counter1", System.currentTimeMillis());
        OnDiskAtomIterator iter = qf.getSSTableColumnIterator(reader);
        ColumnFamily cf = cloneForAdditions(iter);
        while (iter.hasNext()) cf.addAtom(iter.next());
        Cell c = cf.getColumn(Util.cellname("colAA"));
        assert c instanceof CounterCell : c;
        assert ((CounterCell) c).total() == 42;
    }

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    public static final ByteBuffer A = AsciiType.instance.fromString("a");
    public static final ByteBuffer B = AsciiType.instance.fromString("b");


    private static boolean isSatisfiedBy(ColumnCondition.Bound bound, ByteBuffer conditionValue, ByteBuffer columnValue) throws InvalidRequestException
    {
        Cell cell = null;
        if (columnValue != null)
        {
            CompoundSparseCellNameType nameType = new CompoundSparseCellNameType(Collections.EMPTY_LIST);
            ColumnDefinition definition = new ColumnDefinition("ks", "cf", new ColumnIdentifier("c", true), Int32Type.instance, null, null, null, null, null);
            cell = new BufferCell(nameType.create(Composites.EMPTY, definition), columnValue);

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