如何在 optaplanner 中动态添加/删除约束 [英] how to dynamically add / remove constraints in optaplanner

问题描述

我们将 optaplanner 用于 VRP.我们面临的一个挑战是我们的许多限制都特定于当地.例如，在一个州，技术人员不能跨越州界，而在其他州，技术人员可以跨越州界.

We are using optaplanner for VRP. One challenge we have is many of our constraints are specific to a local area. For example, in one state Technician can't cross state line where as in other states technicians can cross state line.

在这种情况下，我们希望创建一个通用解决方案，用户可以在其中添加硬约束，通用解决方案从数据库中选择该约束以提供解决方案.

Under such scenario we want create a generic solution where user can add hard constraints and generic solution pick that constraint from data base to provide solution.

有人设计过这样的解决方案吗?

Has anyone designed such a solution?

谢谢

推荐答案

要么使用不同的 元素:

Either use different <scoreDrl> elements:

• general.drl
• ny-specific.drl
• ca-specific.drl
• tx-specific.drl
• ...

或者，如果您需要解决同时包含 tx 和 ny 员工的单个数据集，请执行类似操作

Or if you need to solve a single dataset that contains both tx and ny employees, then do something like

class Employee {
    State state;
}

rule noCross
when
    Employee(state = "Texas") // doesn't apply to California
    // ... crosses lines
then
    ...
end

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