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MoDisco/Components/XML/Documentation/0.9
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Contents
XML Metamodel
Definition
Concepts are described in W3C XML Recommendation (document and logical structures sections). Concepts for Document Types Declarations are not managed here. Note : there is no composite 'ownedAttribute' reference between Element and Attribute type to avoid ambiguous duplicate owning possibilities considering 'chidren' reference.
Requirements
To use the plug-in you need:
- JDK 1.5 or above
- a version of Eclipse 3.5 or above with the following set of plug-ins installed
- EMF 2.5.0 or higher
Install
Install from SVN
- connect to the SVN repository with anonymous access :
URL = https://dev.eclipse.org/svnroot/modeling/org.eclipse.mdt.modisco
- navigate in repository following 'plugins/trunk' path.
- check-out the project named 'org.eclipse.gmt.modisco.infra.xml.core' .
- Use "export" menu to export this project as a plug-in (Deployable plug-ins and fragments) in your Eclipse installation. Don't forget to choose the "Package plug-ins as individual jar archives" option.
- restart Eclipse to take in account this plug-in
XML Discoverer
The goal of the Generic XML Discoverer plug-in is to allow generic extractions of XML information from a XML file, without the need for a metamodel dedicated to a conforming Document Type Definition(DTD) or XML Schema Description (XSD).
Details
Considering XML files conforming to DTD or XSD, it will be more convenient to have some dedicated metamodels to manipulate information. However, Generic XML Discoverer is an alternative for miscellaneous XML files (no or uncommon DTD/XSD).
This plug-in aims at analyzing any XML file providing a model describing the information found, conforming to the Generic XML metamodel. Moreover, it allows to serialize the xml file back from the model. Thus, some M2M transformations might be used jointly to upgrade some xml files.
Since the metamodel is a subset of W3C XML concepts, the end user should be aware of some limitations in serializing back some advanced XML contents.
Requirements
To use the plug-in you need:
- JDK 1.5 or above
- a version of Eclipse 3.5 or above with the following set of plugins installed
- EMF 2.5.0 or higher
- Discoverers Manager
- Generic XML metamodel
User manual
The plug-in provides the user with a contextual menu to easily create models.
By right-clicking on a container (folder or project) in the Eclipse Package Explorer view, you can quickly create the KDM Source model of your application (see next Figure). Each of these models can then be used with any other tool compliant with the corresponding metamodel.
A progress bar will appear at the bottom of the window as soon as the operation begins. At the end of the process, the newly created model is automatically opened in the MoDisco model browser, if installed, or in default editor (see next Figure).
.Discovering and serializing from Java
The plugin exposes a java class which allows to launch the discovering of XML model from a file (within the workspace or not), and get the resulting model. Some options can be set for the discovering operation :
- OPTION_IGNORE_WHITESPACES : a parameter for indicating to ignore white spaces in text portions.
- OPTION_LIGHTWEIGHT_MODEL : to minimize the memory size of obtained model. If set to true : comments are ignored, text portions with only spaces and line delimiters are ignored.
- OPTION_SILENT_MODE : a parameter to indicate if a browser should be opened on model after discovering.
The XML content can be serialized back since the model elements are contained in a dedicated org.eclipse.emf.ecore.resource.Resource implementation.
For more details see java documentation on DiscoverXMLModel class.
Install
Install from SVN
- connect to the SVN repository with anonymous access :
URL = https://dev.eclipse.org/svnroot/modeling/org.eclipse.mdt.modisco
- navigate in repository following the 'plugins/trunk' path.
- check-out the project named 'org.eclipse.gmt.modisco.infra.xml.discoverer' .
- Use the "export" menu to export this project as a plug-in (Deployable plug-ins and fragments) in your Eclipse installation. Don't forget to choose the "Package plug-ins as individual jar archives" option.
- restart Eclipse to take this plug-in into account
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