oracle.toplink.essentials.internal.sessions

Class CommitOrderCalculator

java.lang.Object

oracle.toplink.essentials.internal.sessions.CommitOrderCalculator

public class CommitOrderCalculator
extends Object

This class calculates a commit order for a series of classes based on the dependencies between them. It builds up a graph of dependencies (CommitOrderDependencyNodes) then applies topological sort to them to get an ordering. This is a throwaway class, which exists only for the lifetime of the calculation. The algorithm is descrbied in the method comment for orderCommits(). This class also includes static methods for quicksort, copied from the standard libraries and adapted for these objects, since that seemed like the easiest way to sort.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	currentTime
protected Vector	nodes
protected Vector	orderedDescriptors
protected AbstractSession	session

Constructor Summary

Constructors

Constructor and Description
CommitOrderCalculator(AbstractSession session)

Method Summary

Modifier and Type	Method and Description
protected void	addNode(ClassDescriptor d)
void	addNodes(Vector descriptors)
void	calculateMappingDependencies()
void	calculateSpecifiedDependencies()
void	depthFirstSearch()
int	getNextTime()
Vector	getNodes()
Vector	getOrderedClasses()
Vector	getOrderedDescriptors()
CommitOrderDependencyNode	nodeFor(Class c)
CommitOrderDependencyNode	nodeFor(ClassDescriptor d)
void	orderCommits()

Methods inherited from class java.lang.Object

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

Field Detail

currentTime

protected int currentTime

nodes

protected Vector nodes

orderedDescriptors

protected Vector orderedDescriptors

session

protected AbstractSession session

Constructor Detail

CommitOrderCalculator

public CommitOrderCalculator(AbstractSession session)

Method Detail

addNode

protected void addNode(ClassDescriptor d)

addNodes

public void addNodes(Vector descriptors)

calculateMappingDependencies

public void calculateMappingDependencies()

calculateSpecifiedDependencies

public void calculateSpecifiedDependencies()

depthFirstSearch

public void depthFirstSearch()

getNextTime

public int getNextTime()

getNodes

public Vector getNodes()

getOrderedClasses

public Vector getOrderedClasses()

getOrderedDescriptors

public Vector getOrderedDescriptors()

nodeFor

public CommitOrderDependencyNode nodeFor(Class c)

nodeFor

public CommitOrderDependencyNode nodeFor(ClassDescriptor d)

orderCommits

public void orderCommits()