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, currentKey, currentSuperColumn, directory, metadata, nodeid

Constructor Summary

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

SSTableSimpleWriter(java.io.File directory, 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,
                           java.lang.String keyspace,
                           java.lang.String columnFamily,
                           AbstractType comparator,
                           AbstractType subComparator)
                    throws java.io.IOException

Create a new writer.

Parameters:

directory - the directory where to write the sstable

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.

Throws:

java.io.IOException

SSTableSimpleWriter

public SSTableSimpleWriter(java.io.File directory,
                           CFMetaData metadata)
                    throws java.io.IOException

Throws:

java.io.IOException

Method Detail

close

public void close()
           throws java.io.IOException

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

Throws:

java.io.IOException

writeRow

protected void writeRow(DecoratedKey key,
                        ColumnFamily columnFamily)
                 throws java.io.IOException

Specified by:

writeRow in class AbstractSSTableSimpleWriter

Throws:

java.io.IOException

getColumnFamily

protected ColumnFamily getColumnFamily()

Specified by:

getColumnFamily in class AbstractSSTableSimpleWriter