startsvariable.java

著名IT公司ILog的APS高级排产优化引擎

package com.power.pipeengine.Variable;

import com.power.pipeengine.Entity.*;
import com.power.pipeengine.*;
import java.util.ResourceBundle;

public class StartsVariable
    extends Variable {
  private static final StartsVariable INSTANCE =
      new StartsVariable();

  // Private constructor supresses
  // default public constructor
  private StartsVariable() {
  }

  public static StartsVariable getInstance() {
    return INSTANCE;
  }

  public String getVariable(Route r, Product p, Bucket b) {
    String varName = new String("S" +
                                "R" + r.getVariableCode() +
                                "P" + p.getVariableCode() +
                                "T" + b.getVariableCode());
    /*String separator = "";
       String varName =  new String( "S" +
           r.getRouteID() + separator +
           p.getProductID() + separator +
           b.getBucketID() );*/
    setObjElement(varName, r, b);
    return varName;
  }

  public void setObjElement(String varName, Route r, Bucket b) {
    //start as early as possible, or JIT
    double cost = r.getCostPerStart();
    //if (cost < 0.6) {
      cost = 1;
    //}
    double coeff = 1;
    for (int i = 0; i < b.getBucketID(); i++) {
      coeff *= 10;
    }
    setObjElement(varName,
                   cost - (100 - b.getBucketID())/100 /*+ Math.random() * 0.0000001 - 0.000001 * b.getBucketID()*/);

  }
}