com.bigdata.mdi
Class SegmentMetadata

java.lang.Object
  com.bigdata.mdi.AbstractResourceMetadata
      com.bigdata.mdi.SegmentMetadata

All Implemented Interfaces:

IResourceMetadata, Params, Externalizable, Serializable, Cloneable

public class SegmentMetadata
extends AbstractResourceMetadata

Metadata for a single IndexSegment.

Version:

$Id: SegmentMetadata.java 2265 2009-10-26 12:51:06Z thompsonbry $

Author:

Bryan Thompson

See Also:

Serialized Form

Field Summary

Fields inherited from class com.bigdata.mdi.AbstractResourceMetadata

log

Constructor Summary

SegmentMetadata()
De-serialization constructor.

SegmentMetadata(File file, UUID uuid, long commitTime)

Method Summary

boolean	isIndexSegment() True iff this resource is an IndexSegment.
boolean	isJournal() True iff this resource is a Journal.

Methods inherited from class com.bigdata.mdi.AbstractResourceMetadata

equals, equals, getCreateTime, getFile, getParams, getUUID, hashCode, readExternal, toString, writeExternal

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SegmentMetadata

public SegmentMetadata()

De-serialization constructor.

SegmentMetadata

public SegmentMetadata(File file,
                       UUID uuid,
                       long commitTime)

Method Detail

isIndexSegment

public final boolean isIndexSegment()

Description copied from interface: IResourceMetadata

True iff this resource is an IndexSegment. Each IndexSegment contains historical read-only data for exactly one partition of a scale-out index.

isJournal

public final boolean isJournal()

Description copied from interface: IResourceMetadata

True iff this resource is a Journal. When the resource is a Journal, there will be a named mutable btree on the journal that is absorbing writes for one or more index partition of a scale-out index.