我们可以在Springboot optaplanner中使用多个@PlanningSolution类和多个SolverManager吗？ [英] can we use multiple @PlanningSolution classes and multiple SolverManager in Springboot optaplanner

问题描述

对于使用optaplanner-spring-boot-starter的Springboot应用程序，云平衡问题解决方案可以与一个计划解决方案和SolverManager配合使用，类似于
https://github.com/DuncanDoyle/optaplanner-sbs-cloud-balancing/tree/master/optaplanner-sbs ，但是当定义多个计划解决方案并使用SolverManager调用它时，会引发错误

For Springboot application using optaplanner-spring-boot-starter, the cloudbalancing problem solution works fine with one planning solution and solverManager similar to https://github.com/DuncanDoyle/optaplanner-sbs-cloud-balancing/tree/master/optaplanner-sbs , but when multiple planning solutions are defined and called using a solverManager it throws an error

原因：
org.springframework.beans.factory。 UnsatisfiedDependencyException：
创建在类路径中定义的名称为'solverFactory'的bean时出错
资源
[org / optaplanner / spring / boot / autoconfigure / OptaPlannerAutoConfiguration.class]：
表达了不满意的依赖关系通过方法'solverFactory'
参数0;嵌套的异常是
org.springframework.beans.factory.BeanCreationException：错误
创建在类路径资源
中定义了名称为 solverConfig的bean [org / optaplanner / spring / boot / autoconfigure / OptaPlannerAutoConfiguration .class]：通过工厂方法实例化
Bean失败；嵌套的异常是
org.springframework.beans.BeanInstantiationException：无法实例化
[org.optaplanner.core.config.solver.SolverConfig]：工厂
方法 solverConfig引发了异常；嵌套的异常是
java.lang.IllegalStateException：找到多个类（[class
com.test.model.PRCaseAssignment，类
com.test.model.CaseAssignment]），并带有
@PlanningSolution批注。

Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'solverFactory' defined in class path resource [org/optaplanner/spring/boot/autoconfigure/OptaPlannerAutoConfiguration.class]: Unsatisfied dependency expressed through method 'solverFactory' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'solverConfig' defined in class path resource [org/optaplanner/spring/boot/autoconfigure/OptaPlannerAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.optaplanner.core.config.solver.SolverConfig]: Factory method 'solverConfig' threw exception; nested exception is java.lang.IllegalStateException: Multiple classes ([class com.test.model.PRCaseAssignment, class com.test.model.CaseAssignment]) found with a @PlanningSolution annotation.

我们如何定义多个@PlanningSolution类并使用SolverManager进行调用，是否需要注释任何类型的限定符？任何帮助表示赞赏。谢谢。

How can we define multiple @PlanningSolution classes and call using the solverManager, are there any kind of Qualifiers which needs to be annotated? Any help is appreciated. Thanks.

推荐答案

请问具有多个解决方案类的用例是什么？

May I ask what is the use case for having multiple solution classes?

optaplanner-spring-boot-starter 仅支持单个求解器配置，因此仅支持单个解决方案类。 SolverManager API也是如此：您可以向 SolverManager 提交多个计划问题，但是它们必须相同类型（解决方案类）并共享相同的求解器配置。要提交其他类型的计划问题，您必须创建 SolverManager 的新实例。请参阅文档，以了解如何创建以下实例：手动 SolverManager 。

The optaplanner-spring-boot-starter supports only a single solver configuration and thus only a single solution class. So does the SolverManager API: you can submit multiple planning problems to the SolverManager, but they have to be of the same type (solution class) and share the same solver configuration. To submit a planning problem of a different type, you have to create a new instance of the SolverManager. See the documentation on how to create an instance of the SolverManager manually.

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