Package edu.uky.ai.planning.ps

Class PlanSpaceNode

java.lang.Object

edu.uky.ai.planning.ps.PlanSpaceNode

All Implemented Interfaces:

Partial

Direct Known Subclasses:

PlanSpaceRoot

public class PlanSpaceNode
extends Object
implements Partial

This class represents an specific partial plan in a plan-space search.

Author:

Stephen G. Ware

Field Summary

Fields

Modifier and Type	Field	Description
final Bindings	bindings	The binding constraints specifying which variables map to which values
final ImmutableList<CausalLink>	causalLinks	The causal links describing how step preconditions are satisfied
final ImmutableList<Flaw>	flaws	A list of flaws (if any) that prevent this plan from being a solution
final DirectedAcyclicGraph<PartialStep>	orderings	The constraints on how steps are ordered
final PlanSpaceNode	parent	This node's parent (the node of which this node is a refinement)
final ImmutableList<PartialStep>	steps	The steps in this plan

Method Summary

Modifier and Type	Method	Description
PlanSpaceNode	expand(ImmutableList<PartialStep> steps, Bindings bindings, DirectedAcyclicGraph<PartialStep> orderings, ImmutableList<CausalLink> causalLinks, ImmutableList<Flaw> flaws)	Creates a child partial plan node (a node for this this node is the parent) with the given steps, bindings, orderings, causal links, and flaws.
PlanSpaceRoot	getRoot()	Returns to root node of this search space.
String	toString()
String	toString(Substitution substitution)	Returns a string representation of this object in which all variables which have values in the given substitution have been replaced with those values.

Methods inherited from class java.lang.Object

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

Field Details

parent

public final PlanSpaceNode parent

This node's parent (the node of which this node is a refinement)

steps

public final ImmutableList<PartialStep> steps

The steps in this plan

bindings

public final Bindings bindings

The binding constraints specifying which variables map to which values

orderings

public final DirectedAcyclicGraph<PartialStep> orderings

The constraints on how steps are ordered

causalLinks

public final ImmutableList<CausalLink> causalLinks

The causal links describing how step preconditions are satisfied

flaws

public final ImmutableList<Flaw> flaws

A list of flaws (if any) that prevent this plan from being a solution

Method Details

toString

public String toString()

Overrides:

toString in class Object

toString

public String toString(Substitution substitution)

Description copied from interface: Partial

Returns a string representation of this object in which all variables which have values in the given substitution have been replaced with those values.

Specified by:

toString in interface Partial

Parameters:

substitution - a substitution which may contain values for variabels used in this object

Returns:

a string

getRoot

public PlanSpaceRoot getRoot()

Returns to root node of this search space.

Returns:

the root node

expand

public PlanSpaceNode expand(ImmutableList<PartialStep> steps,
 Bindings bindings,
 DirectedAcyclicGraph<PartialStep> orderings,
 ImmutableList<CausalLink> causalLinks,
 ImmutableList<Flaw> flaws)

Creates a child partial plan node (a node for this this node is the parent) with the given steps, bindings, orderings, causal links, and flaws.

Parameters:

steps - the steps in the child plan

bindings - the bindings in the child plan

orderings - the orderings between steps in the child plan

causalLinks - the causal links in the child plan

flaws - the flaws in the child plan

Returns:

a child partial plan node