Package org.apache.solr.update

Class VersionInfo

java.lang.Object

org.apache.solr.update.VersionInfo

public class VersionInfo
extends Object

Related to the _version_ field, in connection with the UpdateLog.

NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.

Constructor Summary

Constructors

Constructor	Description
VersionInfo(UpdateLog ulog)

Method Summary

Modifier and Type	Method	Description
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	getNewClock()
SchemaField	getVersionField()
Long	getVersionFromIndex(org.apache.lucene.util.BytesRef idBytes)	Returns the latest version from the index, searched by the given id (bytes) as seen from the realtime searcher.
Long	lookupVersion(org.apache.lucene.util.BytesRef idBytes)

Methods inherited from class java.lang.Object

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

Constructor Details

VersionInfo

public VersionInfo(UpdateLog ulog)

Method Details

getAndCheckVersionField

public static SchemaField getAndCheckVersionField(IndexSchema schema)
                                           throws org.apache.solr.common.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:

org.apache.solr.common.SolrException

getVersionField

public SchemaField getVersionField()

getNewClock

public long getNewClock()

lookupVersion

public Long lookupVersion(org.apache.lucene.util.BytesRef idBytes)

getVersionFromIndex

public Long getVersionFromIndex(org.apache.lucene.util.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.