Package org.apache.cassandra.db

Examples of org.apache.cassandra.db.Column

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            // the read-before-write this operation requires limits its usefulness on big lists, so in practice
            // toDiscard will be small and keeping a list will be more efficient.
            List<ByteBuffer> toDiscard = ((Lists.Value)value).elements;
            for (Pair<ByteBuffer, Column> p : existingList)
            {
                Column element = p.right;
                if (toDiscard.contains(element.value()))
                    cf.addColumn(params.makeTombstone(element.name()));
            }
        }
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        private List<Column> unthriftifySuper(SuperColumn super_column)
        {
            List<Column> columns = new ArrayList<Column>(super_column.columns.size());
            for (org.apache.cassandra.thrift.Column column : super_column.columns)
            {
                Column c = unthriftifySimple(column);
                columns.add(c.withUpdatedName(CompositeType.build(super_column.name, c.name())));
            }
            return columns;
        }
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            return columns;
        }

        protected Column unthriftifySimple(org.apache.cassandra.thrift.Column column)
        {
            return new Column(column.name, column.value, column.timestamp);
        }
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        private Column unthriftifyCounter(CounterColumn column)
        {
            //CounterColumns read the counterID from the System keyspace, so need the StorageService running and access
            //to cassandra.yaml. To avoid a Hadoop needing access to yaml return a regular Column.
            return new Column(column.name, ByteBufferUtil.bytes(column.value), 0);
        }
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        private List<Column> unthriftifySuperCounter(CounterSuperColumn super_column)
        {
            List<Column> columns = new ArrayList<Column>(super_column.columns.size());
            for (CounterColumn column : super_column.columns)
            {
                Column c = unthriftifyCounter(column);
                columns.add(c.withUpdatedName(CompositeType.build(super_column.name, c.name())));
            }
            return columns;
        }
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        return new KeysSearcher(baseCfs.indexManager, columns);
    }

    public boolean isIndexEntryStale(ByteBuffer indexedValue, ColumnFamily data, long now)
    {
        Column liveColumn = data.getColumn(columnDef.name);
        if (liveColumn == null || liveColumn.isMarkedForDelete(now))
            return true;

        ByteBuffer liveValue = liveColumn.value();
        return columnDef.getValidator().compare(indexedValue, liveValue) != 0;
    }
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            {
                ColumnDef cdef = itera.next();
                ByteBuffer columnValue = columns.get(ByteBufferUtil.string(cdef.name.duplicate()));
                if (columnValue != null)
                {
                    Column column = new Column(cdef.name, columnValue);
                    AbstractType<?> validator = getValidatorMap(cfDef).get(column.name());
                    setTupleValue(tuple, i, cqlColumnToObj(column, cfDef), validator);
                }
                else
                    tuple.set(i, null);
                i++;
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            {
                ColumnDef cdef = itera.next();
                ByteBuffer columnValue = row.getBytesUnsafe(ByteBufferUtil.string(cdef.name.duplicate()));
                if (columnValue != null)
                {
                    Column column = new Column(cdef.name, columnValue);
                    AbstractType<?> validator = getValidatorMap(cfDef).get(column.name());
                    setTupleValue(tuple, i, cqlColumnToObj(column, cfDef), validator);
                }
                else
                    tuple.set(i, null);
                i++;
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    public void testReconcileNormal()
    {
        TimestampClock leftClock = new TimestampClock(1);
        TimestampClock rightClock = new TimestampClock(2);

        Column left = new Column(
                "x".getBytes(),
                new byte[] {},
                leftClock);
        Column right = new Column(
                "x".getBytes(),
                new byte[] {},
                rightClock);
       
        Column reconciled = reconciler.reconcile(left, right);

        assertFalse(reconciled.isMarkedForDelete());
        assertEquals(reconciled, right);
    }
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    public void testReconcileDeleted()
    {
        TimestampClock leftClock = new TimestampClock(2);
        TimestampClock rightClock = new TimestampClock(1);

        Column left = new DeletedColumn(
                "x".getBytes(),
                new byte[] {},
                leftClock);
        Column right = new Column(
                "x".getBytes(),
                new byte[] {},
                rightClock);
       
        Column reconciled = reconciler.reconcile(left, right);

        assertTrue(reconciled.isMarkedForDelete());
        assertEquals(reconciled, left);
    }
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Related Classes of org.apache.cassandra.db.Column

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  • org.apache.cassandra.bulkloader.CassandraBulkLoader
  • org.apache.cassandra.cql3.CFDefinition
  • org.apache.cassandra.cql3.Lists$Discarder
  • org.apache.cassandra.db.clock.TimestampReconcilerTest
  • org.apache.cassandra.db.IClock.ClockRelationship
  • org.apache.cassandra.db.index.keys.KeysIndex
  • org.apache.cassandra.db.marshal.AbstractType
  • org.apache.cassandra.hadoop.ColumnFamilyOutputReducer
  • org.apache.cassandra.hadoop.ColumnFamilyRecordReader$RowIterator
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