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

Class MvccFirstRowTreeClosure

java.lang.Object

org.apache.ignite.internal.processors.cache.tree.mvcc.search.MvccFirstRowTreeClosure

All Implemented Interfaces:

BPlusTree.TreeRowClosure<CacheSearchRow,CacheDataRow>, MvccTreeClosure

public class MvccFirstRowTreeClosure
extends Object
implements MvccTreeClosure

Closure which returns the very first encountered row.

Constructor Summary

Constructors

Constructor and Description
MvccFirstRowTreeClosure(GridCacheContext cctx)

Method Summary

Modifier and Type	Method and Description
boolean	apply(BPlusTree<CacheSearchRow,CacheDataRow> tree, BPlusIO<CacheSearchRow> io, long pageAddr, int idx) Performs inspection or operation on a specified row and returns true if this row is required or matches or /operation successful (depending on the context).
CacheDataRow	row()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

MvccFirstRowTreeClosure

public MvccFirstRowTreeClosure(GridCacheContext cctx)

Parameters:

cctx - Cache context.

Method Detail

row

@Nullable
public CacheDataRow row()

Returns:

Found row.

apply

public boolean apply(BPlusTree<CacheSearchRow,CacheDataRow> tree,
                     BPlusIO<CacheSearchRow> io,
                     long pageAddr,
                     int idx)
              throws IgniteCheckedException

Performs inspection or operation on a specified row and returns true if this row is required or matches or /operation successful (depending on the context).

Specified by:

apply in interface BPlusTree.TreeRowClosure<CacheSearchRow,CacheDataRow>

Parameters:

tree - The tree.

io - Th tree IO object.

pageAddr - The page address.

idx - The item index.

Returns:

True if the item passes the predicate.

Throws:

IgniteCheckedException - If failed.

toString

public String toString()

Overrides:

toString in class Object