org.apache.cassandra.io.sstable
Class SSTableSimpleWriter

java.lang.Object
  org.apache.cassandra.io.sstable.AbstractSSTableSimpleWriter
      org.apache.cassandra.io.sstable.SSTableSimpleWriter

public class SSTableSimpleWriter
extends AbstractSSTableSimpleWriter

A SSTable writer that assumes rows are in (partitioner) sorted order. Contrarily to SSTableSimpleUnsortedWriter, this writer does not buffer anything into memory, however it assumes that row are added in sorted order (an exception will be thrown otherwise), which for the RandomPartitioner means that rows should be added by increasing md5 of the row key. This is rarely possible and SSTableSimpleUnsortedWriter should most of the time be prefered.

See Also:

AbstractSSTableSimpleWriter

Field Summary

Fields inherited from class org.apache.cassandra.io.sstable.AbstractSSTableSimpleWriter

columnFamily, counterid, currentKey, currentSuperColumn, directory, metadata

Constructor Summary

SSTableSimpleWriter(java.io.File directory, CFMetaData metadata, IPartitioner partitioner)

SSTableSimpleWriter(java.io.File directory, IPartitioner partitioner, java.lang.String keyspace, java.lang.String columnFamily, AbstractType<?> comparator, AbstractType<?> subComparator)
Create a new writer.

Method Summary

void	close() Close this writer.
protected ColumnFamily	getColumnFamily()
protected void	writeRow(DecoratedKey key, ColumnFamily columnFamily)

Methods inherited from class org.apache.cassandra.io.sstable.AbstractSSTableSimpleWriter

addColumn, addCounterColumn, addExpiringColumn, getWriter, newRow, newSuperColumn

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SSTableSimpleWriter

public SSTableSimpleWriter(java.io.File directory,
                           IPartitioner partitioner,
                           java.lang.String keyspace,
                           java.lang.String columnFamily,
                           AbstractType<?> comparator,
                           AbstractType<?> subComparator)

Create a new writer.

Parameters:

directory - the directory where to write the sstable

partitioner - the partitioner

keyspace - the keyspace name

columnFamily - the column family name

comparator - the column family comparator

subComparator - the column family subComparator or null if not a Super column family.

SSTableSimpleWriter

public SSTableSimpleWriter(java.io.File directory,
                           CFMetaData metadata,
                           IPartitioner partitioner)

Method Detail

close

public void close()

Description copied from class: AbstractSSTableSimpleWriter

Close this writer. This method should be called, otherwise the produced sstables are not guaranteed to be complete (and won't be in practice).

Specified by:

close in class AbstractSSTableSimpleWriter

writeRow

protected void writeRow(DecoratedKey key,
                        ColumnFamily columnFamily)

Specified by:

writeRow in class AbstractSSTableSimpleWriter

getColumnFamily

protected ColumnFamily getColumnFamily()

Specified by:

getColumnFamily in class AbstractSSTableSimpleWriter