org.neo4j.kernel
Class LevelSelectorOrderer

java.lang.Object
  org.neo4j.kernel.AbstractSelectorOrderer<Pair<AtomicInteger,TraversalBranch[]>>
      org.neo4j.kernel.LevelSelectorOrderer

All Implemented Interfaces:

BranchSelector, SideSelector

public class LevelSelectorOrderer
extends AbstractSelectorOrderer<Pair<AtomicInteger,TraversalBranch[]>>

Constructor Summary

LevelSelectorOrderer(BranchSelector startSelector, BranchSelector endSelector, boolean stopDescentOnResult, int maxDepth)

Method Summary

protected Pair<AtomicInteger,TraversalBranch[]>	initialState()
TraversalBranch	next(TraversalContext metadata) Decides the next position ("where to go from here") from the current position, based on the rules.

Methods inherited from class org.neo4j.kernel.AbstractSelectorOrderer

currentSide, endCurrentSelector, getStateForCurrentSelector, nextBranchFromCurrentSelector, nextBranchFromNextSelector, nextSelector, setStateForCurrentSelector

Methods inherited from class java.lang.Object

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

Constructor Detail

LevelSelectorOrderer

public LevelSelectorOrderer(BranchSelector startSelector,
                            BranchSelector endSelector,
                            boolean stopDescentOnResult,
                            int maxDepth)

Method Detail

initialState

protected Pair<AtomicInteger,TraversalBranch[]> initialState()

Overrides:

initialState in class AbstractSelectorOrderer<Pair<AtomicInteger,TraversalBranch[]>>

next

public TraversalBranch next(TraversalContext metadata)

Description copied from interface: BranchSelector

Decides the next position ("where to go from here") from the current position, based on the rules. Since TraversalBranch has the Path.endNode() of the position and the Path.lastRelationship() to how it got there as well as TraversalBranch#position(), decisions can be based on the current expansion source and the given rules.

Returns:

the next position based on the current position and the rules of the traversal.