com.bigdata.btree.data

Interface IChildData

All Known Subinterfaces:

IDirectoryData, INodeData, ITreeNodeData

All Known Implementing Classes:

IndexSegment.ImmutableNodeFactory.ImmutableNode, IndexSegmentBuilder.SimpleNodeData, MockNodeData, MutableDirectoryPageData, MutableNodeData, Node

public interface IChildData

Interface for data access to children of an index node.

Author:

Bryan Thompson

Method Summary

Methods

Modifier and Type	Method and Description
long	getChildAddr(int index) Return the persistent addresses of the specified child node.
int	getChildCount() The #of children of this node.

Method Detail

getChildCount

int getChildCount()

The #of children of this node. Either all children will be nodes or all children will be leaves. The #of children of a node MUST be IAbstractNodeData#getKeyCount()+1

Returns:

The #of children of this node.

getChildAddr

long getChildAddr(int index)

Return the persistent addresses of the specified child node.

Parameters:

index - The index of the child in [0:nkeys].

Returns:

The persistent child address -or- zero(0L) if the child is not persistent.