org.apache.cassandra.io
Class PrecompactedRow

java.lang.Object
  org.apache.cassandra.io.AbstractCompactedRow
      org.apache.cassandra.io.PrecompactedRow

public class PrecompactedRow
extends AbstractCompactedRow

PrecompactedRow merges its rows in its constructor in memory.

Field Summary

Fields inherited from class org.apache.cassandra.io.AbstractCompactedRow

key

Constructor Summary

PrecompactedRow(CompactionController controller, java.util.List<SSTableIdentityIterator> rows)

PrecompactedRow(DecoratedKey key, ColumnFamily compacted)

Method Summary

int	columnCount()
ColumnFamily	getFullColumnFamily()
boolean	isEmpty()
void	update(java.security.MessageDigest digest) update @param digest with the data bytes of the row (not including row key or row size)
void	write(java.io.DataOutput out) write the row (size + column index + filter + column data, but NOT row key) to @param out

Methods inherited from class java.lang.Object

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

Constructor Detail

PrecompactedRow

public PrecompactedRow(DecoratedKey key,
                       ColumnFamily compacted)

PrecompactedRow

public PrecompactedRow(CompactionController controller,
                       java.util.List<SSTableIdentityIterator> rows)

Method Detail

write

public void write(java.io.DataOutput out)
           throws java.io.IOException

Description copied from class: AbstractCompactedRow

write the row (size + column index + filter + column data, but NOT row key) to @param out

Specified by:

write in class AbstractCompactedRow

Throws:

java.io.IOException

update

public void update(java.security.MessageDigest digest)

Description copied from class: AbstractCompactedRow

update @param digest with the data bytes of the row (not including row key or row size)

Specified by:

update in class AbstractCompactedRow

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in class AbstractCompactedRow

Returns:

true if there are no columns in the row AND there are no row-level tombstones to be preserved

columnCount

public int columnCount()

Specified by:

columnCount in class AbstractCompactedRow

Returns:

the number of columns in the row

getFullColumnFamily

public ColumnFamily getFullColumnFamily()
                                 throws java.io.IOException

Returns:

the full column family represented by this compacted row. We do not provide this method for other AbstractCompactedRow, because this fits the whole row into memory and don't make sense for those other implementations.

Throws:

java.io.IOException