interface MUriType {
	//The desctiptor that used to open the files of this type
	MPartDescriptor getDescriptor();
	void setDescriptor(MPartDescriptor descriptor);
	
	//the expression (regex or other expression) that match input uris ot this content type
	String getFilter();
	void setExpresson(String exp);
}

//Using
MApplication app = ...;
MPartDesctoptor javaEditorDescriptor = ...;
MPartDesctoptor textEditorDescriptor = ...;

MUriType javaUriType = MBasicFactory.INSTANCE.createUriType();
javaUriType.setDesctiptor(javaEditorDescriptor);
javaUriType.setExpression("*.java");
app.addUriType(javaUriType);

MUriType textUriType = MBasicFactory.INSTANCE.createUriType();
textUriType.setDesctiptor(textEditorDescriptor);
textUriType.setExpression("*.*");
app.addUriType(textUriType);

//the expressions evalutated in direct order - first the javaUriType, then textUriType. So, when we search the UriType for
//file "SomeJavaFile.java", first matched the javaUriType and search stopped. When the UriType for file "SomeText.txt" is searched,
//javaUriType match fail, and the second, more generic criteria is matched.

//Open the uri with service
EPartService partService = ...;
// open the java file with default editor (that defined in java uri type)
partService.openUri("SomeJavaFile.java");
//open the java file with text editor
partService.openUri("SomeJavaFile.java", textEditorDesciptor);