com.sun.labs.minion.indexer.partition
Class PartitionManager.Merger

java.lang.Object
  com.sun.labs.minion.indexer.partition.PartitionManager.Merger

All Implemented Interfaces:

java.lang.Runnable

Enclosing class:

PartitionManager

public class PartitionManager.Merger
extends java.lang.Object
implements java.lang.Runnable

A threadable class used for merging a list of partitions.

Field Summary

protected DiskPartition	newDP The new disk partition resulting from the merge.
protected int	newPart The new partition created in the merge.
protected java.lang.Thread	parent The thread that instantiated us.
protected java.util.List<DelMap>	preDelMaps The list of delmaps for the partitions.
protected ReadableBuffer[]	preMaps The deletion bitmaps for the partitions at startup.
protected java.util.List<DiskPartition>	toMerge The list of partitions that we wish to merge.

Constructor Summary

PartitionManager.Merger(java.util.List<DiskPartition> l, FileLock localMergeLock)
Instantiates a merger for the given list of partitions.

Method Summary

DiskPartition	merge() Merges.
void	run() Does the merge of the partitions.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

newDP

protected DiskPartition newDP

The new disk partition resulting from the merge.

toMerge

protected java.util.List<DiskPartition> toMerge

The list of partitions that we wish to merge.

preDelMaps

protected java.util.List<DelMap> preDelMaps

The list of delmaps for the partitions.

preMaps

protected ReadableBuffer[] preMaps

The deletion bitmaps for the partitions at startup.

parent

protected java.lang.Thread parent

The thread that instantiated us. We need to take the merge lock from them.

newPart

protected int newPart

The new partition created in the merge.

Constructor Detail

PartitionManager.Merger

public PartitionManager.Merger(java.util.List<DiskPartition> l,
                               FileLock localMergeLock)

Instantiates a merger for the given list of partitions. The resulting partition will be added to the active list of the given manager.

Parameters:

l - The list of partitions to merge.

localMergeLock - the lock file to use when releasing the merge lock.

Method Detail

merge

public DiskPartition merge()

Merges.

run

public void run()

Does the merge of the partitions.

Specified by:

run in interface java.lang.Runnable

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object