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我正在实现一个流程管理工具，并且我正在使用（出于研究目的）yWorks 库“yFiles for JavaFX”。

到目前为止我做得很好，但是一件事现在让我停止了 2 天的表演：

由于我使用 JavaFX bean 及其属性来编辑和显示我的数据，我不得不实现某种自定义序列化程序：

graphMLIOHandler.addHandleSerializationListener(
            (source, hsArgs) -> {
                // Only serialize items that are of the specific type.
                if (hsArgs.getItem() instanceof StringProperty) {
                    //serialize
                } else if (hsArgs.getItem() instanceof IntegerProperty) {
                    //serialize
                } else if (hsArgs.getItem() instanceof DoubleProperty) {
                    //serialize
                } else if (hsArgs.getItem() instanceof SimpleListProperty) {
                    //serialize
                }
            });

但是当加载我正在编写的文件时，我得到一个IllegalArgumentException. yFiles 想要调用一个setValue方法并抛出一个DeserializationNotSupportedException. 所以我尝试实现一个addHandleDeserializationListener. 没用。然后我MarkupExtensions为我的Project班级实施。没有改变。为你们提供后一种实现的代码，并希望有人能找到我错过的东西。我有点在我最后的手段这里..

自定义图形控制器：

public class CustomGraphController extends GraphControl{

   private IGraph graph ;
   private GraphMLIOHandler graphMLIOHandler;

    public CustomGraphController(){
        super();
        graph = this.getGraph();
        graph.setTag(new Project());
    }
}

项目类：

@GraphML(markupExtensionConverter = ProjectMEC.class)
public class Project {
    SimpleListProperty<ParameterOccurrence> generalParameters;

    public Project(){
        generalParameters = new SimpleListProperty<>(FXCollections.observableArrayList());
    }

    public ObservableList<ParameterOccurrence> getGeneralParameters() {
        return generalParameters;
    }

    public SimpleListProperty<ParameterOccurrence> generalParametersProperty() {
        return generalParameters;
    }

    public void setGeneralParameters(ObservableList<ParameterOccurrence> generalParameters) {
        this.generalParameters.set(generalParameters);
    }
}

项目ME.class

public class ProjectME extends MarkupExtension {

    ArrayList<ParameterOccurrence> generalParameters;

    public ProjectME() {
        super();
    }

    public ArrayList<ParameterOccurrence> getGeneralParameters() {
        return generalParameters;
    }

    public void setGeneralParameters(ArrayList<ParameterOccurrence> generalParameters) {
        this.generalParameters = generalParameters;
    }


    @Override
    public Object provideValue(ILookup iLookup) {
        Project ret = new Project();
        ret.getGeneralParameters().addAll(generalParameters);
        return ret;
    }
}

项目MEC.class：

public class ProjectMEC implements IMarkupExtensionConverter {

    @Override
    public boolean canConvert(IWriteContext iWriteContext, Object o) {
        return o instanceof Project;
    }

    @Override
    public MarkupExtension convert(IWriteContext iWriteContext, Object o) {
        ProjectME extension = new ProjectME();
        ObservableList<ParameterOccurrence> temp = FXCollections.observableArrayList(((Project)o).getGeneralParameters());
        extension.getGeneralParameters().addAll(temp);
        return extension;
    }
}

堆栈跟踪：

Caused by: com.yworks.yfiles.graphml.DeserializationNotSupportedException: Error parsing property GeneralParameters: argument type mismatch
    at com.yworks.yfiles.graphml.XamlReader.b(Unknown Source)
    at com.yworks.yfiles.graphml.XamlReader.c(Unknown Source)
    ... 83 more
Caused by: java.lang.IllegalArgumentException: argument type mismatch
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.yworks.yfiles.graphml.PropertyInfo.setValue(Unknown Source)
    at com.yworks.yfiles.graphml.Property.setValue(Unknown Source)
    ... 85 more

我的猜测是该GeneralParameters属性（即使我尝试实现addHandleDeserializationListenerfor SimpleListProperty）以某种方式需要这个 MarkupExtension。但是堆栈跟踪保持完全一样，因为反射API和我找不到的封闭源代码，哪里正是抛出异常......

任何想法，发生了什么？

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0 回答 0