XML Constraint Definition Parsers
Identifier:
org.eclipse.emf.validation.constraintParsers
Since:
1.0
Description:
This extension point allows plug-ins to register objects which know how to parse
constraints encoded in a particular language from the information supplied in an
IConstraintDescriptor.
Configuration Markup:
<!ELEMENT extension (
constraintParser+)>
<!ATTLIST extension
point CDATA #REQUIRED
id CDATA #IMPLIED
name CDATA #IMPLIED
>
<!ELEMENT constraintParser EMPTY>
<!ATTLIST constraintParser
lang CDATA #REQUIRED
class CDATA #REQUIRED
>
Defines a constraint parser.
-
lang - Indicates the constraint language which this builder supports.
This matches values of the "lang" attribute in elements in XML constraint declarations.
The language is not case-sensitive.
-
class - The name of a class implementing a specialization of the
IConstraintParser
interface, which handles the associated constraint language.
Examples:
To provide support for constraints defined in scripted Java embedded in the constraint 'body', using BeanShell, one might define an extension like the following:
<extension
point=
"org.eclipse.emf.validation.constraintParsers"
>
<constraintParser
class=
"com.example.validation.BeanShellConstraintParser"
lang=
"Java-BeanShell"
>
</constraintParser>
</extension>
Supplied Implementation:
The
org.eclipse.emf.validation.ocl plug-in provides support for OCL as a constraint language using a constraint parser.
Copyright (c) 2005 IBM Corporation and others.
All rights reserved. This program and the accompanying materials
are made available under the terms of the Eclipse Public License v1.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-v10.html