All Downloads are FREE. Search and download functionalities are using the official Maven repository.

org.btrplace.model.constraint.Seq Maven / Gradle / Ivy

/*
 * Copyright (c) 2016 University Nice Sophia Antipolis
 *
 * This file is part of btrplace.
 * 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 program.  If not, see .
 */

package org.btrplace.model.constraint;

import org.btrplace.model.VM;

import java.util.HashSet;
import java.util.List;
import java.util.Objects;
import java.util.Set;

/**
 * A constraint to force the actions that change the given VMs state
 * to be executed in the given order.
 * 

* The restriction provided by the constraint is only continuous. * * @author Fabien Hermenier */ @SideConstraint(args = {"sched : lists(vms)"}, inv = "!(i, j : range(sched)) i < j --> (!(ai : actions(sched[i])) !(aj : actions(sched[j])) end(aj) <= begin(aj))") public class Seq implements SatConstraint { private List order; /** * Make a new constraint. * * @param seq the order to ensure */ public Seq(List seq) { Set s = new HashSet<>(seq); if (s.size() != seq.size()) { throw new IllegalArgumentException("The list of VMs must not contain duplicates"); } order = seq; } @Override public List getInvolvedVMs() { return order; } @Override public String toString() { return "seq(vms=" + order + ", continuous" + ')'; } @Override public boolean setContinuous(boolean b) { return b; } @Override public SatConstraintChecker getChecker() { return new SeqChecker(this); } @Override public boolean isContinuous() { return true; } @Override public boolean equals(Object o) { if (this == o) { return true; } if (o == null || getClass() != o.getClass()) { return false; } Seq seq = (Seq) o; return Objects.equals(order, seq.order); } @Override public int hashCode() { return Objects.hash(order); } }





© 2015 - 2025 Weber Informatics LLC | Privacy Policy