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| <h1 xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0">Overview</h1> |
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| <a name="xsd_tutorial_overview"/>Overview</h2> |
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| <p>This tutorial explains how you can do code generation with Xtend and |
| Xpand, using XML Schema Definitions as meta models and XML files as |
| models. To keep things easy, the introduced example is a minimalistic one. |
| A text file is generated from contents specified in XML. The general |
| concept of models, meta models and why and when code generation is useful, |
| is not explained. At the end, a deeper view under the hood is taken to |
| understand how XML Schemas are transformed to EMF Ecore models, and which |
| flexibilities/restrictions this approach provides.</p> |
| <p>All source files listed within this tutorial are also available as |
| an example project wich can be imported into the Eclipse workspace by |
| running <span class="emphasis"> |
| <em>"File" / "New" / "Example..." / "Xpand/Xtend Examples |
| using an XSD Meta Model" / "M2T custom XML to Text via Xpand (minimal |
| Example)"</em> |
| </span>. This will create the project |
| <code class="classname">org.eclipse.xpand.examples.xsd.m2t.minimal</code> project |
| in your workspace. This minimal example is based on "<span class="emphasis"> |
| <em>M2T custom |
| XML to Java via Xpand</em> |
| </span>" |
| (<code class="classname">org.eclipse.xpand.examples.xsd.m2t.xml2javawizard</code>) |
| which is more comprehensive and recommended for further reading.</p> |
| <p>To generate code from XML files with Xpand, at least files of the |
| following four types are needed:</p> |
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| <ul class="itemizedlist" type="disc"> |
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| <p>Meta Model ( <code class="filename">metamodel.xsd</code> )</p> |
| </li> |
| <li class="listitem"> |
| <p>Model ( <code class="filename">model.xml</code> )</p> |
| </li> |
| <li class="listitem"> |
| <p>Xpand Template ( <code class="filename">template.xpt</code> )</p> |
| </li> |
| <li class="listitem"> |
| <p>MWE Workflow ( <code class="filename">workflow.mwe</code> )</p> |
| </li> |
| </ul> |
| </div> |
| <div class="figure"> |
| <a name="xsd_tutorial_xsd_project"/> |
| <p class="title"> |
| <b>Figure 1. Minimalistic Xpand XSD Project</b> |
| </p> |
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| <img src="xsd_tutorial/workspace-minidemo.png" alt="Minimalistic Xpand XSD Project"/> |
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