从域模型生成符号模型

Question

我目前正在进行一个项目，该项目需要使用QVTO将一个模型转换为另一个模型。源模型是以表格形式表示的状态机。目标模型也是具有节点和边的statemachine。源模型只有领域元模型，但目标模型同时具有领域和符号元模型。符号元模型是http://www.eclipse.org/gmf/runtime/1.0.2/notation。我从源域模型转换到目标域模型，但是我的目标模型没有表示法模型。我想做的是从目标模型生成表示模型，并将其序列化到相同的xmi文件。我阅读了EMF和GMF的文档，并试图做到这一点，但我做不到。我也谷歌了，那也没用。目标模型的头部同时提到了域和符号元模型。为了清楚起见，请查看下面的xmi文件。

<?xml version="1.0" encoding="UTF-8"?>
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    <states xmi:type="n1:BasicState" xmi:id="_7Q_IcAetEeaf_-AtraPkfA" name="Triggered"/>
    <states xmi:type="n1:BasicState" xmi:id="_7UnrQAetEeaf_-AtraPkfA" name="Activated"/>
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从转换开始，我有了目标模型的顶部部分，直到n1:StateMachine，这是域模型。从N1:StateMachine，在wards上，上面部分的图形表示继续，这是我想要生成的。如何为从模型转换中获得的域模型生成表示模型？

Answer 1

我不熟悉QVT的EMF资源处理，但我尝试尽我所能描述在EMF-和GMF级别上需要做什么。

从技术上讲，表示模型与您已经成功生成的域模型是同一种EMF模型，只是它符合另一个名为http://www.eclipse.org/GMF/runtime/1.0.2/notation的元模型，并可从相应的GMF插件org.eclipse.GMF.runtime.notation中获得。

您必须使您的转换知道这个元模型，然后您可以生成与原始模型类似的它的实例。转换需要基于表示模型的定义，将表示模型与目标域模型元素连接起来；但这与您的域模型已经支持的交叉引用处理是相同的。

最后，为了将目标和符号模型序列化到同一个xmi文件中，您必须将两者添加到同一个EMF资源中，如下所示：

EObject targetDomain = ...; //root element of the target domain model
EObject targetNotation = ...; //root element of the target notation model
EList<EObject> contents = targetResource.getContents();
contents.add(targetDomain);
contents.add(targetNotation);

这些步骤一起应该允许您相应地生成表示法模型。