org.apache.ignite.internal.processors.cache.persistence

Class DataRowCacheAware

java.lang.Object

org.apache.ignite.internal.processors.cache.persistence.CacheDataRowAdapter

org.apache.ignite.internal.processors.cache.tree.DataRow

org.apache.ignite.internal.processors.cache.persistence.DataRowCacheAware

All Implemented Interfaces:

MvccUpdateVersionAware, MvccVersionAware, CacheDataRow, CacheSearchRow, Storable

public class DataRowCacheAware
extends DataRow

Data row implementation that can optionally hide the cache identifier and can set null as value.
It is used to simplify storing a data row into page memory, because in some cases the cache identifier is not stored on the data pages, but is required to link this data row in BPlusTree.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.ignite.internal.processors.cache.persistence.CacheDataRowAdapter

CacheDataRowAdapter.RowData

Field Summary

Fields inherited from class org.apache.ignite.internal.processors.cache.tree.DataRow

hash, part

Fields inherited from class org.apache.ignite.internal.processors.cache.persistence.CacheDataRowAdapter

cacheId, expireTime, key, link, val, ver, verReady

Constructor Summary

Constructors

Constructor and Description
DataRowCacheAware(KeyCacheObject key, @Nullable CacheObject val, GridCacheVersion ver, int part, long expireTime, int cacheId, boolean storeCacheId)

Method Summary

Modifier and Type	Method and Description
int	cacheId()
void	storeCacheId(boolean storeCacheId)
@Nullable CacheObject	value()

Methods inherited from class org.apache.ignite.internal.processors.cache.tree.DataRow

cacheId, hash, key, link, partition

Methods inherited from class org.apache.ignite.internal.processors.cache.persistence.CacheDataRowAdapter

expireTime, headerSize, initFromDataPage, initFromLink, initFromLink, initFromLink, isReady, key, link, mvccCoordinatorVersion, mvccCounter, mvccOperationCounter, mvccTxState, newMvccCoordinatorVersion, newMvccCounter, newMvccOperationCounter, newMvccTxState, readFragment, readFullRow, readHeader, readIncompleteCacheId, readIncompleteExpireTime, readIncompleteKey, readIncompleteValue, readIncompleteVersion, size, toString, version

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.ignite.internal.processors.cache.persistence.CacheDataRow

ioVersions

Methods inherited from interface org.apache.ignite.internal.processors.cache.mvcc.MvccUpdateVersionAware

newMvccVersion, newMvccVersion, newMvccVersion, newMvccVersion

Methods inherited from interface org.apache.ignite.internal.processors.cache.mvcc.MvccVersionAware

mvccVersion, mvccVersion, mvccVersion, mvccVersion

Constructor Detail

DataRowCacheAware

public DataRowCacheAware(KeyCacheObject key,
                         @Nullable
                         @Nullable CacheObject val,
                         GridCacheVersion ver,
                         int part,
                         long expireTime,
                         int cacheId,
                         boolean storeCacheId)

Parameters:

key - Key.

val - Value.

ver - Version.

part - Partition.

expireTime - Expire time.

cacheId - Cache ID.

storeCacheId - Flag indicates that cacheId should be stored in data page.

Method Detail

storeCacheId

public void storeCacheId(boolean storeCacheId)

Parameters:

storeCacheId - Flag indicates that cacheId should be stored in data page.

cacheId

public int cacheId()

Specified by:

cacheId in interface CacheSearchRow

Overrides:

cacheId in class CacheDataRowAdapter

Returns:

Cache ID or 0 if cache ID is not defined.

value

@Nullable
public @Nullable CacheObject value()

Specified by:

value in interface CacheDataRow

Overrides:

value in class CacheDataRowAdapter

Returns:

Cache value.