Spring状态机UML留在内存中

Question

我已经使用Spring状态机一年多了，现在根据我的需求尝试了不同的实现方法，当我使用UML时，我遇到了一个严重的问题。

我使用纸莎草来绘制UML，我有许多UML存储在某个位置。我需要使用的是动态选择的。这已经做得很成功了。现在我遇到了一个严重的问题。下面是我如何调用UML的代码。

Resource resource = new FileSystemResource(stmDir+"/"+model+".uml");

        UmlStateMachineModelFactory umlBuilder = new UmlStateMachineModelFactory(resource);
        umlBuilder.setStateMachineComponentResolver(resolveActionConfig(model));
        StateMachineModelFactory<String, String> modelFactory = umlBuilder;

        Builder<String, String> builder = StateMachineBuilder.builder();
        builder.configureModel().withModel().factory(modelFactory);
        builder.configureConfiguration().withConfiguration().beanFactory(new StaticListableBeanFactory());

        stateMachine = builder.build();

您可以看到，我使用了新的UmlStateMachineModelFactory（资源）；

UmlStateMachineModelFactory类有以下代码

@Override
public StateMachineModel<String, String> build() {
    Model model = null;
    try {
        model = UmlUtils.getModel(getResourceUri(resolveResource()).getPath());
    } catch (IOException e) {
        throw new IllegalArgumentException("Cannot build build model from resource " + resource + " or location " + location, e);
    }
    UmlModelParser parser = new UmlModelParser(model, this);
    DataHolder dataHolder = parser.parseModel();
    // we don't set configurationData here, so assume null
    return new DefaultStateMachineModel<String, String>(null, dataHolder.getStatesData(), dataHolder.getTransitionsData());
}

每次我创建一个UmlStateMachineModelFactory，它又创建一个UMLModelParser。

import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.uml2.uml.Activity;
import org.eclipse.uml2.uml.Constraint;
import org.eclipse.uml2.uml.Event;
import org.eclipse.uml2.uml.Model;
import org.eclipse.uml2.uml.OpaqueBehavior;
import org.eclipse.uml2.uml.OpaqueExpression;
import org.eclipse.uml2.uml.PackageableElement;
import org.eclipse.uml2.uml.Pseudostate;
import org.eclipse.uml2.uml.PseudostateKind;
import org.eclipse.uml2.uml.Region;
import org.eclipse.uml2.uml.Signal;
import org.eclipse.uml2.uml.SignalEvent;
import org.eclipse.uml2.uml.State;
import org.eclipse.uml2.uml.StateMachine;
import org.eclipse.uml2.uml.TimeEvent;
import org.eclipse.uml2.uml.Transition;
import org.eclipse.uml2.uml.Trigger;
import org.eclipse.uml2.uml.UMLPackage;
import org.eclipse.uml2.uml.Vertex;

 ResourceSet resourceSet = new ResourceSetImpl();
    resourceSet.getPackageRegistry().put(UMLPackage.eNS_URI, UMLPackage.eINSTANCE);
    resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap().put(UMLResource.FILE_EXTENSION, UMLResource.Factory.INSTANCE);
    resourceSet.createResource(modelUri);
    Resource resource = resourceSet.getResource(modelUri, true);

这叫。我想知道这是不是导致了堆的堆积。请帮忙

Answer 1

我把gh572的一些修复推到了master和1.2.x。希望这些对你有用。至少我能够看到垃圾收集更好地工作。我计划在本周晚些时候发布。