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OptaPlanner Benchmark config failing due to <solver/> element namespace mismatch

I'm trying to use the OptaPlanner Benchmarking module. My benchmark config file is being rejected due to the following error:

The <solver/> element belongs to a different namespace (https://www.optaplanner.org/xsd/benchmark) than expected (https://www.optaplanner.org/xsd/solver).

I took the basics of my config from the example in the docs and I haven't changed any of the xsd / xsi links etc. The example shows tags in the . My IDE doesn't give me any xml formatting errors.

I've paired the file down to just the base section where I define the shared model classes / score definitions and it results in the same problem.

<?xml version="1.0" encoding="UTF-8"?>
<plannerBenchmark xmlns="https://www.optaplanner.org/xsd/benchmark" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
              xsi:schemaLocation="https://www.optaplanner.org/xsd/benchmark https://www.optaplanner.org/xsd/benchmark/benchmark.xsd">
<benchmarkDirectory>benchmarks</benchmarkDirectory>
<warmUpSecondsSpentLimit>30</warmUpSecondsSpentLimit>

<inheritedSolverBenchmark>
    <solver>
        <solutionClass>my.package.SchedulingSolution</solutionClass>
        <entityClass>my.package.ISchedulable</entityClass>
        <entityClass>my.package.Booking</entityClass>
<scoreDirectorFactory><constraintProviderClass>my.package.SchedulingConstraintProvider</constraintProviderClass></scoreDirectorFactory>
    </solver>
</inheritedSolverBenchmark>

I'm invoking it using var benchmarkFactory = PlannerBenchmarkFactory.createFromSolverConfigXmlResource("config-benchmark.xml"); in a main method.

Am I doing something obviously wrong here?

Solution

  • I think that you are passing the benchmark-config.xml to the wrong method; createFromSolverConfigXmlResource expects a solver-config.xml. It creates a basic benchmark from an existing solver configuration.

    In fact, the solver config is a subset of the benchmark config, but they have a separate XML namespace.

    Please take a look at the method createFromXmlResource, which expects the benchmark-config.xml.