DataRowCacheAware (Ignite 2.17.0)

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:

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

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method 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, partition
- Methods inherited from class org.apache.ignite.internal.processors.cache.persistence.CacheDataRowAdapter
  expireTime, initFromDataPage, initFromLink, initFromLink, initFromLink, initFromPageBuffer, isReady, key, link, readFragment, readFullRow, readIncomplete, 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

- 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.