Initializing help system before first use

getassignment

Purpose
Gets the cpvar representing the assignment of a task for a particular resource. In the following example, either task A requires resource R1 with resource profile [1,2,1,1,2,1,1,2], or task A requires resource R2 with resource profile [2,2,1,1,1,1,1,2]. The choice depends on the value of the decision variables A.assignment(R1) and A.assignment(R2) that can both take a value of 0 (the task is not assigned to this resource) or a value of 1 (the task is assigned to this resource).
Scheduling/altresusage.png
Synopsis
function getassignment(task:cptask, resource:cpresource) : cpvar
Arguments
task 
the task
resource 
the resource
Return value
The cpvar representing the assignment of 'task' to 'resource'
Example
The following example illustrates this: 
model "Alternative resources and non constant resource usage"
 uses "kalis"

 declarations
  res1,res2   : cpresource
  taska,taskb : cptask
  arr1,arr2   : list of integer
 end-declarations

! Fix start times and durations
 taska.start   = 3
 taska.duration = 4
 taskb.start   = 3
 taskb.duration = 4

! Define 2 cumulative resources
 set_resource_attributes(res1, KALIS_DISCRETE_RESOURCE, 4)
 set_resource_attributes(res2, KALIS_DISCRETE_RESOURCE, 4)

 setname(taska,"taska"); setname(taskb,"taskb")
 setname(res1,"R1"); setname(res2,"R2")

! Define alternative resources for both tasks
 arr1 := [1,3,2,3]
 arr2 := [2,4,1,3]
 requires(taska, {resusage(res1,arr1),resusage(res2,arr2)}, 1, 1)
 requires(taskb, {resusage(res1,1,1),resusage(res2,1,1)}, 1, 1)

! Find all solutions
 while (cp_find_next_sol) do
  cp_show_sol
 end-do

end-model

Related topics
has_assignment get_earliest_start_possible getstart getend getduration getconsumption getrequirement getproduction getprovision

Parent Topic Scheduling

© 2001-2025 Fair Isaac Corporation. All rights reserved. This documentation is the property of Fair Isaac Corporation (“FICO”). Receipt or possession of this documentation does not convey rights to disclose, reproduce, make derivative works, use, or allow others to use it except solely for internal evaluation purposes to determine whether to purchase a license to the software described in this documentation, or as otherwise set forth in a written software license agreement between you and FICO (or a FICO affiliate). Use of this documentation and the software described in it must conform strictly to the foregoing permitted uses, and no other use is permitted.