Epsilon - Examples

This example uses features which are only available in the latest interim version of Epsilon.

rule Book2Page 
  transform book : t_book {
  
  // We only want to generate pages
  // for books that have their public
  // attribute set to true
  guard : book.b_public
  
  parameters {
    // These parameters will be made available
    // to the invoked template as variables
    var params : new Map;
    params.put("index", t_book.all.indexOf(book) + 1);
    return params;
  }
  
  // The EGL template to be invoked
  template : "book2page.egl"
  
  // Output file
  target : "gen/" + book.e_id.text + ".html"
  
}

rule Library2Page 
  transform library : t_library {
  
  template : "library2page.egl"
  
  target : "gen/index.html"
}

[*- Heading *]
<h1>Book [%=index%]: [%=book.a_title%]</h1>

[*- List of authors *]
<h2>Authors</h2>
<ul>
[%for (author in book.c_author) { %]
  <li>[%=author.text%]
[%}%]
</ul>

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<library>
  <book title="EMF Eclipse Modeling Framework" pages="744" public="true">
    <id>EMFBook</id>
    <author>Dave Steinberg</author>
    <author>Frank Budinsky</author>
    <author>Marcelo Paternostro</author>
    <author>Ed Merks</author>
    <published>2009</published>
  </book>
  <book title="Eclipse Modeling Project: A Domain-Specific Language (DSL) Toolkit" 
    pages="736" public="true">
    <id>EMPBook</id>
    <author>Richard Gronback</author>
    <published>2009</published>
  </book>
  <book title="Official Eclipse 3.0 FAQs" pages="432" public="false">
    <id>Eclipse3FAQs</id>
    <author>John Arthorne</author>
    <author>Chris Laffra</author>
    <published>2004</published>
  </book>
</library>

<h1>Book 1: EMF Eclipse Modeling Framework</h1>

<h2>Authors</h2>
<ul>
  <li>Dave Steinberg
  <li>Frank Budinsky
  <li>Marcelo Paternostro
  <li>Ed Merks
</ul>

Check out the code from the SVN:

go to the SVN repository
navigate to trunk/examples
check out the org.eclipse.epsilon.examples.egl.library project

Once you have checked out/imported the code, to run the example you need to go through the following steps:

register any .ecore metamodels in the org.eclipse.epsilon.examples.egl.library project
right click the .launch file in the org.eclipse.epsilon.examples.egl.library project
select Run as... and click the first item in the menu that pops up

What's this?

In this example, we use the plain XML driver of Epsilon in the context of an EGL model-to-text transformation.

Example: Generating HTML pages from an XML document

What's this?

What are .emf files?

More examples...

Even more examples...