Class IloTransitionCost

The class IloTransitionCost allows definition of a transition cost for a unary resource. More precisely, an instance of IloTransitionCost allows association of an instance of either IloTransitionParam or a user-defined IloTransitionCostObject with a unary resource.

If the IloTransitionCost is defined with an instance of IloTransitionParam, the transition costs on that unary resource will then be computed by using the IloTransitionParam and the transition types of activities.

If the IloTransitionCost is defined with an instance of IloTransitionCostObject, the transition costs on that unary resource will then be computed by using the object extracted from the IloTransitionCostObject and the virtual transition costs it defines.

Note that several transition costs can be defined on the same unary resource.

The type of the transition cost is set to Next whenever one of these member functions is called: IloTransitionCost::getNextCostExpr, or IloTransitionCost::getSetupCostExpr.

The type of the transition cost is set to Prev whenever either of these member functions is called: IloTransitionCost::getPrevCostExpr, or IloTransitionCost::getTeardownCostExpr.

This class inherits from the IBM ILOG Concert Technology class IloExtractable. That class is documented in the IBM ILOG Concert Technology Reference Manual.

For more information, see Transition Costs.

This constructor creates a transition cost for the unary resource resource and adds it to the set of transition costs managed by the resource. Transition costs on this resource will be computed using the transition parameter param.

This constructor creates a transition cost for the unary resource resource and adds it to the set of transition costs managed by the resource. Transition costs on this resource will be computed by using the transition parameter param. If isNext equals IloTrue, the transition cost will be of type Next; that is, the member functions IloTransitionCost::getPrevCostExpr and IloTransitionCost::getTeardownCostExpr will not be available. If isNext equals IloFalse, the transition cost will be of type Prev; that is, the member functions IloTransitionCost::getNextCostExpr and IloTransitionCost::getSetupCostExpr will not be available.

This constructor creates a transition cost for the unary resource resource and adds it to the set of transition costs managed by the resource. Transition costs on this resource will be computed using the transition cost object tobj.

This constructor creates a transition cost for the unary resource resource and adds it to the set of transition costs managed by the resource. Transition costs on this resource will be computed by using the transition cost object tobj. If isNext equals IloTrue, the transition cost will be of type Next; that is, the member functions IloTransitionCost::getPrevCostExpr and IloTransitionCost::getTeardownCostExpr will not be available. If isNext equals IloFalse, the transition cost will be of type Prev; that is, the member functions IloTransitionCost::getNextCostExpr and IloTransitionCost::getSetupCostExpr will not be available.

This member function returns the transition cost between the two resource constraints given as arguments. The transition cost is computed by using the transition type of the activities and the current transition parameter. More precisely, if activity of rct1x is of type t1, and activity rct2x is of type t2, then this member function will return the value corresponding to line t1 and column t2 on the transition parameter. In other words, it will return the value that was set by using IloTransitionParam::setValue(t1,t2). This member function will throw an exception if the transition cost is defined with a transition cost object, as the transition function will be created only at extraction time.

This member function returns the cost sum variable. The cost sum variable represents the sum of the transition costs (including setup and transition costs) of all the resource constraints on the resource of the invoking transition cost.

This member function returns an expression that represents the cost between rct and the resource constraint that will be next to rct. If rct is the last resource constraint on the resource, then this cost is the teardown cost of rct. rct must be a resource constraint of the resource of the invoking transition cost. The transition cost is set to type Next.

This member function returns the maximum transition cost between rct and the resource constraint that will be next to rct. If rct is the last resource constraint on the resource, then this cost is the maximum teardown cost of rct. rct must be a resource constraint of the resource of the invoking transition cost.

This member function returns the minimimum transition cost between rct and the resource constraint that will be next to rct. If rct is the last resource constraint on the resource, then this cost is the minimum teardown cost of rct. rct must be a resource constraint of the resource of the invoking transition cost.

This member function returns an expression that represents the cost between rct and the resource constraint that will be previous to rct. If rct is the first resource constraint on the resource, then this cost is the setup cost of rct. rct must be a resource constraint of the resource of the invoking transition cost. The transition cost is set to type Prev.

This member function returns the maximum transition cost between rct and the resource constraint that will be previous to rct. If rct is the first resource constraint on the resource, then this cost is the maximum setup cost of rct. rct must be a resource constraint of the resource of the invoking transition cost.

This member function returns the minimum transition cost between rct and the resource constraint that will be previous to rct. If rct is the first resource constraint on the resource, then this cost is the minimum setup cost of rct. rct must be a resource constraint of the resource of the invoking transition cost.

This member function returns the setup cost of the resource constraint rct. The setup cost is computed by using the transition type of the activity and the current transition parameter. This member function will throw an exception if the transition cost is defined with a transition cost object, as the transition function will be created only at extraction time.

This member function returns an expression that represents the setup cost for the invoking transition cost. That is, the setup cost of the first resource constraint to be processed on the resource is returned. The transition cost is set to type Next.

This member function returns the maximum setup cost of the invoking transition cost. That is, the maximum setup cost of the first resource constraint to be processed on the resource is returned.

This member function returns the minimum setup cost of the invoking transition cost. That is, the minimum setup cost of the first resource constraint to be processed on the resource is returned.

This member function returns the teardown cost of the resource constraint rct. The teardown cost is computed by using the transition type of the activity and the current transition parameter. This member function will throw an exception if the transition cost is defined with a transition cost object, as the transition function will be created only at extraction time.

This member function returns an expression that represents the teardown cost for the invoking transition cost. That is, the teardown cost of the last resource constraint to be processed on the resource is returned. The transition cost is set to type Prev.

This member function returns the maximum teardown cost of the invoking transition cost. That is, the maximum teardown cost of the last resource constraint to be processed on the resource is returned.

This member function returns the minimum teardown cost of the invoking transition cost. That is, the minimum teardown cost of the last resource constraint to be processed on the resource is returned.

In case the invoking transition cost has been created with a user defined transition cost object, this member function will return this transition cost object. Otherwise, it will return an empty handle.

This member function returns IloTrue if the invoking transition cost has been created as a cost sum variable. The cost sum variable represents the sum of the transition costs (including setup and transition costs) of all the resource constraints on the resource of the invoking transition cost. A cost sum variable is automatically created when calling the member function IloTransitionCost::getCostSumVar or IloTransitionCost::setCostSumVar.

This member function returns IloTrue if the invoking transition cost is of type next. Otherwise it returns false.

This member function returns IloTrue if the invoking transition cost is of type next. Otherwise it returns false.

This member function sets sum as the cost sum variable of the invoking transition cost. The cost sum variable represents the sum of the transition costs (including setup and transition costs) of all the resource constraints on the resource of the invoking transition cost.

This member function sets the maximum transition cost between rct and the resource constraint that will be next to rct. If rct is the last resource constraint on the resource, then this cost is the maximum teardown cost of rct. rct must be a resource constraint of the resource of the invoking transition cost. The transition cost is set to type Next.

This member function sets the minimimum transition cost between rct and the resource constraint that will be next to rct. If rct is the last resource constraint on the resource, then this cost is the minimum teardown cost of rct. rct must be a resource constraint of the resource of the invoking transition cost. The transition cost is set to type Next.

This member function sets the maximum transition cost between rct and the resource constraint that will be previous to rct. If rct is the first resource constraint on the resource, then this cost is the maximum setup cost of rct. rct must be a resource constraint of the resource of the invoking transition cost. The transition cost is set to type Prev.

This member function sets the minimum transition cost between rct and the resource constraint that will be previous to rct. If rct is the first resource constraint on the resource, then this cost is the minimum setup cost of rct. rct must be a resource constraint of the resource of the invoking transition cost. The transition cost is set to type Prev.

This member function sets the maximum setup cost of the invoking transition cost. That is, the maximum setup cost of the first resource constraint to be processed on the resource is returned. The transition cost is set to type Next.

This member function sets the minimum setup cost of the invoking transition cost. That is, the minimum setup cost of the first resource constraint to be processed on the resource is returned. The transition cost is set to type Next.

This member function sets the maximum teardown cost of the invoking transition cost. That is, the maximum teardown cost of the last resource constraint to be processed on the resource is returned. The transition cost is set to type Prev.

This member function sets the minimum teardown cost of the invoking transition cost. That is, the minimum teardown cost of the last resource constraint to be processed on the resource is returned. The transition cost is set to type Prev.

This member function allows changing the transition parameter used to compute the transition cost.