org.apache.solr.update

Class VersionInfo

java.lang.Object

org.apache.solr.update.VersionInfo

public class VersionInfo
extends Object

Constructor Summary

Constructors

Constructor and Description
VersionInfo(UpdateLog ulog, int nBuckets)

Method Summary

Modifier and Type	Method and Description
void	blockUpdates()
VersionBucket	bucket(int hash)
static SchemaField	getAndCheckVersionField(IndexSchema schema) Gets and returns the CommonParams.VERSION_FIELD from the specified schema, after verifying that it is indexed, stored, and single-valued.
Long	getMaxVersionFromIndex(IndexSearcher searcher) Returns the highest version from the index, or 0L if no versions can be found in the index.
long	getNewClock()
long	getOldClock()
SchemaField	getVersionField()
Long	getVersionFromIndex(BytesRef idBytes) Returns the latest version from the index, searched by the given id (bytes) as seen from the realtime searcher.
void	lockForUpdate()
Long	lookupVersion(BytesRef idBytes)
void	reload()
void	seedBucketsWithHighestVersion(long highestVersion)
void	unblockUpdates()
void	unlockForUpdate()
void	updateClock(long clock)

Methods inherited from class java.lang.Object

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

Constructor Detail

VersionInfo

public VersionInfo(UpdateLog ulog,
                   int nBuckets)

Method Detail

getAndCheckVersionField

public static SchemaField getAndCheckVersionField(IndexSchema schema)
                                           throws SolrException

Gets and returns the CommonParams.VERSION_FIELD from the specified schema, after verifying that it is indexed, stored, and single-valued. If any of these pre-conditions are not met, it throws a SolrException with a user suitable message indicating the problem.

Throws:

SolrException

reload

public void reload()

getVersionField

public SchemaField getVersionField()

lockForUpdate

public void lockForUpdate()

unlockForUpdate

public void unlockForUpdate()

blockUpdates

public void blockUpdates()

unblockUpdates

public void unblockUpdates()

getNewClock

public long getNewClock()

getOldClock

public long getOldClock()

updateClock

public void updateClock(long clock)

bucket

public VersionBucket bucket(int hash)

lookupVersion

public Long lookupVersion(BytesRef idBytes)

getVersionFromIndex

public Long getVersionFromIndex(BytesRef idBytes)

Returns the latest version from the index, searched by the given id (bytes) as seen from the realtime searcher. Returns null if no document can be found in the index for the given id.

getMaxVersionFromIndex

public Long getMaxVersionFromIndex(IndexSearcher searcher)
                            throws IOException

Returns the highest version from the index, or 0L if no versions can be found in the index.

Throws:

IOException

seedBucketsWithHighestVersion

public void seedBucketsWithHighestVersion(long highestVersion)