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How I can save my UML 2.5 diagrams in XMI files. I read specifications for UML and XMI but I not enough know English to clearly understand it.
I very need in example of xmi file that contains some UML 2.5 diagram. But I cannot find so samples. Or some documentation which will be easier than OMG specifications. Are some samples of XMI or docs exist?

Denis Sologub
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    Writing XMI serialization by hand can be a very daunting task, and I would not advise to do it unless you must. From what tool/language do you want to save it? Because for example Java has tools for it (such as https://wiki.eclipse.org/MDT-UML2 ) – Peter Uhnak Nov 02 '15 at 09:49
  • Also since your question is too broad (and asks for off-site resources) it will very likely be removed as not constructive. – Peter Uhnak Nov 02 '15 at 09:51
  • Just on Russian forums no one replied me – Denis Sologub Nov 02 '15 at 09:59
  • Thanks for your answer, I'll try to understand generated files – Denis Sologub Nov 02 '15 at 10:00

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XMI is a standard to exchange UML models, not diagrams.

For a standard to exchange diagrams see UML Diagram Interchange

Nonetheless many UML tool vendors have added diagram specifications in their XMI export. Sadly these are all custom extensions of XMI, so it's unlikely that another tool will be able to read interprete those correctly.

Geert Bellekens
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  • Maybe, I wrote incorrect my question. But I know how to insert into xmi additional information about diagram and etc to draw it on screen after loading. But I have problem with UML objects and their declarations, for example how to present class and association in xmi format as UML object, not drawable entity. – Denis Sologub Nov 02 '15 at 12:55
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    How can you know about additional diagram information, but not about the basics such as classes and associations? There's a speficiation document on the omg site. Start from there. – Geert Bellekens Nov 02 '15 at 12:58
  • Because of it is only extension of xmi. I wrote about information which need for drawer, for example background color, positions, sizes and etc. – Denis Sologub Nov 02 '15 at 13:01
  • I already read omg specs. But there is almost nothing about object presentation in xmi. Only few examples that cover base. So I asked where I can find more expanded examples or documentations. – Denis Sologub Nov 02 '15 at 13:14
  • I will glad if you can post some xmi that will contain class diagram with custom datatype and two linked classes. It can very help me to understand principals of UML object presentation in xmi – Denis Sologub Nov 02 '15 at 13:16