问题
I'm trying to implement a benchmark configuration in my project, and whatever I do, I seem to encounter some sort of error. After a few reads from the Documentation I discovered that I need to implement a SolutionIO interface to read the input and make it into a solution.
This is my configuration without the solver:
<benchmarkDirectory>local/data/nurserostering/folder</benchmarkDirectory>
<inheritedSolverBenchmark>
<problemBenchmarks>
----> <problemIOClass>org.optaplanner.examples.nurserostering.persistence.CustomBenchmarkIO</problemIOClass> <-----
<inputSolutionFile>data/nurserostering/import/importTest/Input0.xml</inputSolutionFile>
</problemBenchmarks>
The error I'm getting is at the <problemIOClass> tag (see end of post).
This is my CustomBenchmarkIO(Custom SolutionIO):
package org.optaplanner.examples.nurserostering.persistence;
import java.io.File;
import org.optaplanner.core.api.domain.solution.Solution;
public interface CustomProblemIOInterface {
String getFileExtension();
Solution read(File inputSolutionFile);
void write(Solution solution, File outputSolutionFile);
}
And here I have a class that implements that interface:
package org.optaplanner.examples.nurserostering.persistence;
import java.io.File;
import org.optaplanner.core.api.domain.solution.Solution;
import org.optaplanner.persistence.common.api.domain.solution.SolutionFileIO;
public class CustomBenchmarkIOClass implements CustomProblemIOInterface{
public String getInputFileExtension() {
return null;
}
public String getOutputFileExtension() {
// TODO Auto-generated method stub
return null;
}
public Solution read(File inputSolutionFile) {
return null;
}
public void write(Object solution, File outputSolutionFile) {
}
}
I have tried using the class and the interface, but I still get the same error.
Here is the full error log:
Exception in thread "main" java.lang.IllegalArgumentException: Unmarshalling of benchmarkConfigResource (org/optaplanner/examples/nurserostering/benchmark/monetBenchmarkConfig.xml) fails.
at org.optaplanner.benchmark.impl.XStreamXmlPlannerBenchmarkFactory.configure(XStreamXmlPlannerBenchmarkFactory.java:105)
at org.optaplanner.benchmark.api.PlannerBenchmarkFactory.createFromXmlResource(PlannerBenchmarkFactory.java:46)
at org.optaplanner.examples.common.app.CommonBenchmarkApp$ArgOption.buildPlannerBenchmarkFactory(CommonBenchmarkApp.java:105)
at org.optaplanner.examples.common.app.CommonBenchmarkApp.buildAndBenchmark(CommonBenchmarkApp.java:66)
at org.optaplanner.examples.nurserostering.app.NurseRosteringBenchmarkApp.main(NurseRosteringBenchmarkApp.java:24)
Caused by: com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$UnknownFieldException: No such field org.optaplanner.benchmark.config.ProblemBenchmarksConfig.problemIOClass
---- Debugging information ----
field : problemIOClass
class : org.optaplanner.benchmark.config.ProblemBenchmarksConfig
required-type : org.optaplanner.benchmark.config.ProblemBenchmarksConfig
converter-type : com.thoughtworks.xstream.converters.reflection.ReflectionConverter
line number : 6
class[1] : org.optaplanner.benchmark.config.SolverBenchmarkConfig
class[2] : org.optaplanner.benchmark.config.PlannerBenchmarkConfig
version : 1.4.7
-------------------------------
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.handleUnknownField(AbstractReflectionConverter.java:495)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:351)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:257)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:474)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:406)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:257)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:474)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:406)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:257)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50)
at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:134)
at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:32)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1185)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1169)
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:1040)
at org.optaplanner.benchmark.impl.XStreamXmlPlannerBenchmarkFactory.configure(XStreamXmlPlannerBenchmarkFactory.java:133)
at org.optaplanner.benchmark.impl.XStreamXmlPlannerBenchmarkFactory.configure(XStreamXmlPlannerBenchmarkFactory.java:123)
at org.optaplanner.benchmark.impl.XStreamXmlPlannerBenchmarkFactory.configure(XStreamXmlPlannerBenchmarkFactory.java:103)
... 4 more
I'm posting this question because I don't know what I haven't tried, as I don't know all the possible ways of implementing a benchmark.
回答1:
You need to implement an interface from optaplanner itself, called SolutionFileIO: you don't need to define your own interface. It's in the jar optaplanner-persistence-common these days.
来源：https://stackoverflow.com/questions/37445464/implementing-a-solutionio-interface-for-benchmarking