org.cpsolver.ifs.assignment.context

Class DefaultParallelAssignmentContextHolder<V extends Variable<V,T>,T extends Value<V,T>>

java.lang.Object

org.cpsolver.ifs.assignment.context.AssignmentContextHolderMap<V,T>

org.cpsolver.ifs.assignment.context.DefaultParallelAssignmentContextHolder<V,T>

Type Parameters:

V - Variable

T - Value

All Implemented Interfaces:

AssignmentContextHolder<V,T>

Direct Known Subclasses:

InheritedAssignmentContextHolder

public class DefaultParallelAssignmentContextHolder<V extends Variable<V,T>,T extends Value<V,T>>
extends AssignmentContextHolderMap<V,T>

A simple assignment context holder implementation used by the DefaultParallelAssignment class. CanHoldContext are used when possible, storing contexts in arrays, on the DefaultParallelAssignment.getIndex() position.

Version:

IFS 1.3 (Iterative Forward Search)
Copyright (C) 2014 Tomáš Müller
muller@unitime.org
http://muller.unitime.org

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not see http://www.gnu.org/licenses.

Author:

Tomáš Müller

See Also:

AssignmentContext, AssignmentContextReference, AssignmentContextHolder

Field Summary

Fields

Modifier and Type	Field and Description
protected int	iIndex

Fields inherited from class org.cpsolver.ifs.assignment.context.AssignmentContextHolderMap

iContexts

Constructor Summary

Constructors

Constructor and Description
DefaultParallelAssignmentContextHolder(int threadIndex)

Method Summary

Modifier and Type	Method and Description
<C extends AssignmentContext> void	clearContext(AssignmentContextReference<V,T,C> reference) Clear an assignment context that is associated with the given a reference.
<U extends AssignmentContext> U	getAssignmentContext(Assignment<V,T> assignment, AssignmentContextReference<V,T,U> reference) Return assignment context for the given assignment and reference.

Methods inherited from class java.lang.Object

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

Field Detail

iIndex

protected int iIndex

Constructor Detail

DefaultParallelAssignmentContextHolder

public DefaultParallelAssignmentContextHolder(int threadIndex)

Method Detail

getAssignmentContext

public <U extends AssignmentContext> U getAssignmentContext(Assignment<V,T> assignment,
                                                            AssignmentContextReference<V,T,U> reference)

Description copied from interface: AssignmentContextHolder

Return assignment context for the given assignment and reference. A new assignment context is created when there is not assignment context associated with the given reference yet.

Specified by:

getAssignmentContext in interface AssignmentContextHolder<V extends Variable<V,T>,T extends Value<V,T>>

Overrides:

getAssignmentContext in class AssignmentContextHolderMap<V extends Variable<V,T>,T extends Value<V,T>>

Type Parameters:

U - assignment context type

Parameters:

assignment - current assignment (there is only one assignment associated with one holder, but the assignment is passed so that HasAssignmentContext.createAssignmentContext(Assignment) can be called if needed

reference - a reference created by calling Model.createReference(HasAssignmentContext)

Returns:

an assignment context

clearContext

public <C extends AssignmentContext> void clearContext(AssignmentContextReference<V,T,C> reference)

Description copied from interface: AssignmentContextHolder

Clear an assignment context that is associated with the given a reference. If there is any created for the reference.

Specified by:

clearContext in interface AssignmentContextHolder<V extends Variable<V,T>,T extends Value<V,T>>

Overrides:

clearContext in class AssignmentContextHolderMap<V extends Variable<V,T>,T extends Value<V,T>>

Type Parameters:

C - assignment context type

Parameters:

reference - a reference (which can be stored within the model, e.g., as an instance variable of a constraint)