XPRBsol

Method Detail

• isValid

  public boolean isValid()

  Test whether a solution is correctly defined.

       XPRBsol sol1;
       if(sol1.isValid() == false)
          System.out.println("Error in sol definition.");
   

• setVar

  public void setVar(XPRBvar var,
                     double value)

  Add a variable assignment in a solution. This method sets the value of a variable in a (partial) solution.

       XPRBprob expl1;
       XPRBvar x1, x2;
       XPRBsol sol1;
       expl1 = new XPRBprob("example1");
       x1 = expl1.newVar("abc3", XPRB.UI, 1, 100);
       x2 = expl1.newVar("abc1", XPRB.PL, 0, XPRB.INFINITY);
       sol1 = expl1.newSol();
       sol1.setVar(x1,1.0);
       sol1.setVar(x2,0.0);
   

  Parameters:

  var - a variable of type XPRBvar

  value - a double constant

• getVar

  public java.lang.Double getVar(XPRBvar var)

  Get the value assignet to a variable in a solution. This method retrieves the value assigned to a variable in the given solution.

       XPRBprob expl1;
       XPRBvar x1, x2;
       XPRBsol sol1;
       double val1;
       expl1 = new XPRBprob("example1");
       x1 = expl1.newVar("abc3", XPRB.UI, 1, 100);
       sol1 = expl1.newSol();
       sol1.setVar(x1,1.0);
       val1 = sol1.getVar(x1, value);
   

  Parameters:

  var - a variable of type XPRBvar

  Returns:

  The value assigned to var or null.

• delVar

  public void delVar(XPRBvar var)

  Delete a variable assignment from a solution. This method removes a variable from a solution.

       XPRBprob expl2;
       XPRBvar x1;
       XPRBsol sol1;
       expl2 = new XPRBprob("example2");
       x1 = expl2.newVar("abc3", XPRB.UI, 1, 100);
       sol1 = expl2.newSol();
       sol1.addVar(x1, 1.0);
       sol1.delVar(x1);
   

  Parameters:

  var - a variable of type XPRBvar

• getSize

  public int getSize()

  Get the size of a solution. Returns the number of variables assigned to a value in a solution.

       XPRBprob expl2;
       XPRBvar x1;
       XPRBsol sol1;
       int size;
       expl2 = new XPRBprob("example2");
       x1 = expl2.newVar("abc3", XPRB.UI, 1, 100);
       sol1 = expl2.newSol();
       sol1.addVar(x1, 1.0);
       size = sol1.getSize();
   

  Returns:

  Solution size (integer value)

• print

  public void print()

  Print out a solution. This method is not available in the Student Edition.

       XPRBprob expl2;
       XPRBsos set1;
       expl2 = new XPRBprob("example2");
       sol1 = expl2.newSol();
       sol1.print();