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

Class CacheDataTree

java.lang.Object

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

org.apache.ignite.internal.processors.cache.persistence.tree.BPlusTree<CacheSearchRow,CacheDataRow>

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

All Implemented Interfaces:

IgniteTree<CacheSearchRow,CacheDataRow>

public class CacheDataTree
extends BPlusTree<CacheSearchRow,CacheDataRow>

Nested Class Summary

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

BPlusTree.Get, BPlusTree.Insert, BPlusTree.Invoke, BPlusTree.Put, BPlusTree.Replace, BPlusTree.Result, BPlusTree.Search, BPlusTree.TreeRowClosure<L,T extends L>, BPlusTree.TreeVisitorClosure<L,T extends L>

Nested classes/interfaces inherited from interface org.apache.ignite.internal.util.IgniteTree

IgniteTree.InvokeClosure<T>, IgniteTree.OperationType

Field Summary

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

CONC_DESTROY_MSG, metaPageId, pageHndWrapper

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

grpId, grpName, lockLsnr, NOOP_LSNR, pageMem, reuseList, rnd, wal

Constructor Summary

Constructors

Constructor and Description
CacheDataTree(CacheGroupContext grp, String name, ReuseList reuseList, CacheDataRowStore rowStore, long metaPageId, boolean initNew, PageLockListener lockLsnr)

Method Summary

Modifier and Type	Method and Description
protected int	compare(BPlusIO<CacheSearchRow> iox, long pageAddr, int idx, CacheSearchRow row)
GridCursor<CacheDataRow>	find(CacheSearchRow lower, CacheSearchRow upper, BPlusTree.TreeRowClosure<CacheSearchRow,CacheDataRow> c, Object x)
CacheDataRow	getRow(BPlusIO<CacheSearchRow> io, long pageAddr, int idx, Object flags) Get data row.
static boolean	isDataPageScanEnabled()
static Boolean	isLastFindWithDataPageScan()
CacheDataRowStore	rowStore()
static void	setDataPageScanEnabled(boolean enabled) Enable or disable data page scan.
protected IoStatisticsHolder	statisticsHolder()

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

acquirePage, checkDestroyed, compare, corruptedTreeException, destroy, destroy, find, find, findFirst, findFirst, findLast, findLast, findOne, findOne, findOne, getFirstPageIds, getLockRetries, getName, getRow, initTree, initTree, interruptAll, invoke, isEmpty, iterate, latestInnerIO, latestLeafIO, markDestroyed, printTree, processFailure, put, putx, read, read, remove, removex, rootLevel, setIos, size, size, toString, treeName, validateTree, visit

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

acquirePage, allocatePage, allocatePage, allocatePageNoReuse, groupId, init, needWalDeltaRecord, pageSize, randomInt, read, read, readLock, readUnlock, recyclePage, releasePage, tryWriteLock, write, write, write, write, writeLock, writeUnlock, writeUnlock

Methods inherited from class java.lang.Object

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

Constructor Detail

CacheDataTree

public CacheDataTree(CacheGroupContext grp,
                     String name,
                     ReuseList reuseList,
                     CacheDataRowStore rowStore,
                     long metaPageId,
                     boolean initNew,
                     PageLockListener lockLsnr)
              throws IgniteCheckedException

Parameters:

grp - Cache group.

name - Tree name.

reuseList - Reuse list.

rowStore - Row store.

metaPageId - Meta page ID.

initNew - Initialize new index.

Throws:

IgniteCheckedException - If failed.

Method Detail

setDataPageScanEnabled

public static void setDataPageScanEnabled(boolean enabled)

Enable or disable data page scan.

Parameters:

enabled - {code true} If enabled.

isDataPageScanEnabled

public static boolean isDataPageScanEnabled()

Returns:

true If data page scan is enabled.

isLastFindWithDataPageScan

@TestOnly
public static Boolean isLastFindWithDataPageScan()

Returns:

true If the last observed call to the method find(...) used data page scan.

find

public GridCursor<CacheDataRow> find(CacheSearchRow lower,
                                     CacheSearchRow upper,
                                     BPlusTree.TreeRowClosure<CacheSearchRow,CacheDataRow> c,
                                     Object x)
                              throws IgniteCheckedException

Overrides:

find in class BPlusTree<CacheSearchRow,CacheDataRow>

Parameters:

lower - Lower bound inclusive or null if unbounded.

upper - Upper bound inclusive or null if unbounded.

c - Filter closure.

x - Implementation specific argument, null always means that we need to return full detached data row.

Returns:

Cursor.

Throws:

IgniteCheckedException - If failed.

rowStore

public CacheDataRowStore rowStore()

Returns:

Row store.

compare

protected int compare(BPlusIO<CacheSearchRow> iox,
                      long pageAddr,
                      int idx,
                      CacheSearchRow row)
               throws IgniteCheckedException

Specified by:

compare in class BPlusTree<CacheSearchRow,CacheDataRow>

Parameters:

iox - IO.

pageAddr - Page address.

idx - Index of row in the given buffer.

row - Lookup row.

Returns:

Comparison result as in Comparator.compare(Object, Object).

Throws:

IgniteCheckedException - If failed.

getRow

public CacheDataRow getRow(BPlusIO<CacheSearchRow> io,
                           long pageAddr,
                           int idx,
                           Object flags)

Get data row. Can be called on inner page only if BPlusTree.canGetRowFromInner is true.

Specified by:

getRow in class BPlusTree<CacheSearchRow,CacheDataRow>

Parameters:

io - IO.

pageAddr - Page address.

idx - Index.

flags - Implementation specific argument, null always means that we need to return full detached data row.

Returns:

Data row.

statisticsHolder

protected IoStatisticsHolder statisticsHolder()

Overrides:

statisticsHolder in class BPlusTree<CacheSearchRow,CacheDataRow>

Returns:

Statistics holder to track IO operations.