Question

我需要加载EMF实例模型，然后仅通过在单独的插件中进行编码就可以在其中创建对象。

请通过代码片段向我说明如何创建此对象？

假设我们有简单的元模型：

Answer 1

如果要加载XML模型，只要在Eclipse插件中使用它，它就应该像这样简单：

CSS

要在模型中创建一些对象，您需要使用EMF从ResourceSet resourceSet = new ResourceSetImpl(); Resource resource = resourceSet.getResource(fileURI, true);生成的gactory。如果您的.ecore描述了一个名为.ecore的软件包，则工厂将在Database中生成。

DatabaseFactory.java

要在此模型中检索您的User newUser = DatabaseFactory.INSTANCE.createUser(); newUser.setFirstName("xxxx"); Login login = DatabaseFactory.INSTANCE.createLogin(); login.setPassword("12345678"); newUser.getPasswords().add(login); resource.getContents().add(newUser);：

User

（这只是一个例子，User user = (User) resource.eContents().get(0);当然是有风险的。）

Answer 2

公共对象execute（ExecutionEvent事件）引发ExecutionException { IWorkbenchWindow窗口= HandlerUtil.getActiveWorkbenchWindowChecked（event）; ISelection selection = window.getSelectionService（）。getSelection（“ org.eclipse.jdt.ui.PackageExplorer”）; MessageDialog.openInformation（window.getShell（），“ Test”，selection.toString（））;

                TreeSelection treeSelection = (TreeSelection) selection;
                TreePath[] treePaths = treeSelection.getPaths();
                TreePath treePath = treePaths[0];
                Object lastSegmentObj = treePath.getLastSegment();
                IFile file = (IFile) ((IAdaptable) lastSegmentObj).getAdapter(IFile.class);
                String path = file.getRawLocationURI().toString(); 
                URI uri = URI.createURI(path);

                User imodesene = UserFactory.eINSTANCE.createModesene();
                    imodesene.eAdapters().add(new EContentAdapter() {
                            @Override
                            public void notifyChanged(Notification notification) {
                                super.notifyChanged(notification);
                            }   
                        });

                ResourceSet resourceSet = new ResourceSetImpl();
                Resource resource = resourceSet.getResource(uri, true);
                imodesene = (User) resource.getContents().get(0);

                MessageDialog.openInformation(window.getShell(),"Test", "Load --- Name :"+imodesene.getName()+"\n");

                List<String> NetworkNodes = new ArrayList<>();
                EList<Network> listeNetwork = imodesene.getNetworkFacet().getNetwork();
                for (int it = 0; it < listeNetwork.size(); it++) {
                    EList<Node> listeNode = listeNetwork.get(it).getNodes();
                    for (int itt = 0; itt < listeNode.size(); itt++) {
                        NetworkNodes.add(listeNode.get(itt).getId());
                        }
                    }


                EList<PhysicalEnvironment> listeEnv = imodesene.getPhysicalEnvFacet().getPhysicalEnv();
                for (int it = 0; it < listeEnv.size(); it++) {
                    for (int itt = 0; itt < NetworkNodes.size(); itt++) {
                        NodeInstance nodeInstance = ModeseneFactory.eINSTANCE.createNodeInstance();
                        nodeInstance.setID(NetworkNodes.get(itt));
                        listeEnv.get(it).getZones().get(0).getNodes().add(nodeInstance);

                        }
                    }




            try {
                resource.save(null);
            } catch (IOException e) {
                e.printStackTrace();
            }

            MessageDialog.openInformation(window.getShell(),"Test", "--- END ---");


    return null;
}

}

加载EMF实例模型，然后以编程方式在其中创建对象

2 个答案: