package com.exigen.ie.scheduler;
///////////////////////////////////////////////////////////////////////////////
/*
* Copyright Exigen Group 1998, 1999, 2000, 2002
* 320 Amboy Ave., Metuchen, NJ, 08840, USA, www.exigengroup.com
*
* The copyright to the computer program(s) herein
* is the property of Exigen Group, USA. All rights reserved.
* The program(s) may be used and/or copied only with
* the written permission of Exigen Group
* or in accordance with the terms and conditions
* stipulated in the agreement/contract under which
* the program(s) have been supplied.
*/
///////////////////////////////////////////////////////////////////////////////
import com.exigen.ie.constrainer.Failure;
import com.exigen.ie.constrainer.Goal;
import com.exigen.ie.constrainer.GoalGenerate;
import com.exigen.ie.constrainer.GoalImpl;
import com.exigen.ie.constrainer.IntExpArray;
import com.exigen.ie.constrainer.IntValueSelectorMin;
import com.exigen.ie.constrainer.IntVarSelector;
import com.exigen.ie.constrainer.IntVarSelectorMinMin;
import com.exigen.ie.tools.FastVector;
/**
* This goal instantiates specified jobs
*
* @see JobVariableSelector
*/
public class GoalSetTimes extends GoalImpl
{
FastVector _jobs;
JobVariableSelector _sel;
class DefaultSelector implements JobVariableSelector
{
public IntVarSelector getSelector(IntExpArray vars)
{
return new IntVarSelectorMinMin(vars);
}
}
public GoalSetTimes(FastVector jobs)
{
this(jobs, null);
}
public GoalSetTimes(FastVector jobs, JobVariableSelector sel)
{
super(((Job) jobs.elementAt(0)).constrainer(), "GoalSetTimes");
_jobs = jobs;
_sel = sel != null ? sel : new DefaultSelector();
}
public Goal execute() throws Failure
{
IntExpArray vars = new IntExpArray(constrainer(), _jobs.size());
for (int i = 0; i < _jobs.size(); ++i)
{
Job job = (Job) _jobs.elementAt(i);
vars.set(job.getStartVariable(), i);
}
return new GoalGenerate(
vars,
_sel.getSelector(vars),
new IntValueSelectorMin());
}
}