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

Interface BPlusTree.TreeVisitorClosure<L,T extends L>

All Known Implementing Classes:

MvccUpdateDataRow

Enclosing class:

BPlusTree<L,T extends L>

public static interface BPlusTree.TreeVisitorClosure<L,T extends L>

A generic visitor-style interface for performing inspection/modification operations on the tree.

Field Summary

Fields

Modifier and Type	Field and Description
static int	CAN_WRITE
static int	DIRTY
static int	STOP

Method Summary

Modifier and Type	Method and Description
int	state()
int	visit(BPlusTree<L,T> tree, BPlusIO<L> io, long pageAddr, int idx, IgniteWriteAheadLogManager wal) Performs inspection or operation on a specified row.

Field Detail

STOP

static final int STOP

See Also:

Constant Field Values

CAN_WRITE

static final int CAN_WRITE

See Also:

Constant Field Values

DIRTY

static final int DIRTY

See Also:

Constant Field Values

Method Detail

visit

int visit(BPlusTree<L,T> tree,
          BPlusIO<L> io,
          long pageAddr,
          int idx,
          IgniteWriteAheadLogManager wal)
   throws IgniteCheckedException

Performs inspection or operation on a specified row.

Parameters:

tree - The tree.

io - Th tree IO object.

pageAddr - The page address.

idx - The item index.

Returns:

state bitset.

Throws:

IgniteCheckedException - If failed.

state

int state()

Returns:

state bitset.