gurobi
Class GRBVar

java.lang.Object
  extended by gurobi.GRBVar

public class GRBVar
extends java.lang.Object

Gurobi variable object. Variables are always associated with a particular model. You create a variable object by adding a variable to a model (using GRBModel.addVar), rather than by using a GRBVar constructor.

The methods on variable objects are used to get and set variable attributes. For example, solution information can be queried by calling get(GRB.DoubleAttr.X). Note, however, that it is generally more efficient to query attributes for a set of variables at once. This is done using the attribute query method on the GRBModel object (GRBModel.get).


Method Summary
protected  void finalize()
           
 char get(GRB.CharAttr attr)
          Query the value of a char-valued attribute.
 double get(GRB.DoubleAttr attr)
          Query the value of a double-valued attribute.
 int get(GRB.IntAttr attr)
          Query the value of an int-valued attribute.
 java.lang.String get(GRB.StringAttr attr)
          Query the value of a string-valued attribute.
 boolean sameAs(GRBVar otherVar)
          Check whether two variable objects refer to the same variable.
 void set(GRB.CharAttr attr, char newval)
          Set the value of a char-valued attribute.
 void set(GRB.DoubleAttr attr, double newval)
          Set the value of a double-valued attribute.
 void set(GRB.IntAttr attr, int newval)
          Set the value of an int-valued attribute.
 void set(GRB.StringAttr attr, java.lang.String newval)
          Set the value of a string-valued attribute.
 
Methods inherited from class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Method Detail

finalize

protected void finalize()
Overrides:
finalize in class java.lang.Object

sameAs

public boolean sameAs(GRBVar otherVar)
Check whether two variable objects refer to the same variable.

Parameters:
otherVar - The other variable.
Returns:
Boolean result indicates whether the two variable objects refer to the same model variable.

get

public int get(GRB.IntAttr attr)
        throws GRBException
Query the value of an int-valued attribute.

Parameters:
attr - The attribute being queried.
Returns:
The current value of the requested attribute.
Throws:
GRBException

get

public char get(GRB.CharAttr attr)
         throws GRBException
Query the value of a char-valued attribute.

Parameters:
attr - The attribute being queried.
Returns:
The current value of the requested attribute.
Throws:
GRBException

get

public double get(GRB.DoubleAttr attr)
           throws GRBException
Query the value of a double-valued attribute.

Parameters:
attr - The attribute being queried.
Returns:
The current value of the requested attribute.
Throws:
GRBException

get

public java.lang.String get(GRB.StringAttr attr)
                     throws GRBException
Query the value of a string-valued attribute.

Parameters:
attr - The attribute being queried.
Returns:
The current value of the requested attribute.
Throws:
GRBException

set

public void set(GRB.IntAttr attr,
                int newval)
         throws GRBException
Set the value of an int-valued attribute.

Parameters:
attr - The attribute being modified.
newval - The desired new value of the attribute.
Throws:
GRBException

set

public void set(GRB.CharAttr attr,
                char newval)
         throws GRBException
Set the value of a char-valued attribute.

Parameters:
attr - The attribute being modified.
newval - The desired new value of the attribute.
Throws:
GRBException

set

public void set(GRB.DoubleAttr attr,
                double newval)
         throws GRBException
Set the value of a double-valued attribute.

Parameters:
attr - The attribute being modified.
newval - The desired new value of the attribute.
Throws:
GRBException

set

public void set(GRB.StringAttr attr,
                java.lang.String newval)
         throws GRBException
Set the value of a string-valued attribute.

Parameters:
attr - The attribute being modified.
newval - The desired new value of the attribute.
Throws:
GRBException