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| Re: access element contents as raw text? [message #425879 is a reply to message #425877] |
Wed, 10 December 2008 19:10   |
 Ed Merks
Messages: 33142
Registered: July 2009 |
Senior Member |
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This is a multi-part message in MIME format.
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Matthias,
Comments below.
Matthias wrote:
> Hello,
>
> we are using EMF to process XML documents based on an XML schema. The
> XML includes elements named "<plugin>" that can contain arbitrary
> content:
> <x:plugin name="123">
> ... unknown arbitrary content structured by sub-elements ...
> </x:plugin>
>
> The <plugin> element is defined in the XML schema and it has been
> generated into the ECore model.
> In our application, we need to get the content of the <plugin> element
> as pure, raw text (i.e. simply the text fragment as given in the XML)
> in order to pass it to an external component. In this case, we do not
> need to deal with a FeatureMap etc.
> Is there any way to access the raw text with EMF?
This option is useful for serializing just a subgraph of the whole resource:
/**
* Write only the subtree starting at the specified list of EObjects,
* which must be objects contained by the resource.
*/
String OPTION_ROOT_OBJECTS = "ROOT_OBJECTS";
Note also that it's possible to serialize directly to a Writer rather
than to an OutputStream to save the encoding/decoding cots.
> We are flexible concerning the XML schema definition of <plugin>. The
> only requirement is that it must allow arbitrary content structured by
> sub-elements. A mixed content would also be OK. We already tried a
> complexType with simpleContent based by xs:string, and xs:any.
With the above approach, you can design the complex type however it
makes sense...
>
> Regards,
> Matthias
>
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Content-Type: text/html; charset=ISO-8859-15
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html;charset=ISO-8859-15"
http-equiv="Content-Type">
</head>
<body bgcolor="#ffffff" text="#000000">
Matthias,<br>
<br>
Comments below.<br>
<br>
Matthias wrote:
<blockquote
cite="mid:825bd1cba41f41dd47441508236d5117$1@www.eclipse.org"
type="cite">Hello,
<br>
<br>
we are using EMF to process XML documents based on an XML schema. The
XML includes elements named "<plugin>" that can contain arbitrary
content: <br>
<x:plugin name="123">
<br>
Ed Merks
Professional Support: https://www.macromodeling.com/
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| Re: access element contents as raw text? [message #426121 is a reply to message #426116] |
Tue, 16 December 2008 21:52 |
Ed Merks
Messages: 33142
Registered: July 2009 |
Senior Member |
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Matthias,
Like this:
Resource resource =
resourceSet.createResource(URI.createURI("http:///My.library"));
DocumentRoot documentRoot =
LibraryFactory.eINSTANCE.createDocumentRoot();
Library root = LibraryFactory.eINSTANCE.createLibrary();
Book book = LibraryFactory.eINSTANCE.createBook();
root.getBooks().add(book);
documentRoot.setLibrary(root);
resource.getContents().add(documentRoot);
resource.save(System.out, null);
Map<Object, Object> options = new HashMap<Object, Object>();
options.put(XMLResource.OPTION_ROOT_OBJECTS,
Collections.singletonList(book));
resource.save(System.out, options);
Of course if you element doesn't correspond to a global element, the
serialization won't be schema-valid.
Matthias wrote:
> Hello Ed,
>
> thanks for your help.
> Unfortunately, we couldn't manage to get the raw text serialization of
> only one of our EObjects. We couldn't find out how/when/where to use
> OPTION_ROOT_OBJECTS parameter. Could you provide a short code example
> of how to do it?
>
> Thanks in advance,
> Matthias
>
Ed Merks
Professional Support: https://www.macromodeling.com/
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