Developing Model-to-Text Transformations - Eclipse Modeling Project: A Domain-Specific Language Toolkit - page 295

This is the corresponding Xtend utility file dncUtil.ext :

import dnc;
import oocore;

String fullyQualifiedName(Package p) :
p.package == null ? p.name : fullyQualifiedName(p.package) + '.'
+ p.name

;

String fullyQualifiedName(Class c) :
let p = fullyQualifiedName(c.package) : p != '' &&
p != "java.lang" ? p + '.' + c.name : c.name

;

String fullyQualifiedName(Void v) : '';

String fullyQualifiedPath(Class c) :
fullyQualifiedName(c.package).replaceAll('\\.', '/') +
"/" + c.name + ".java"

;

String wrapIfCollection(Reference reference) :
reference.upperBound == -1 ?
"java.util.Collection" + "<" + fullyQualifiedName(reference.type) +
">" :
fullyQualifiedName(reference.type)

;

Boolean isValid(Package package) :
package != null && package.name.length > 0

;

String asColumnNameChar(String s) :
s.toLowerCase() == s ? s.toUpperCase() : '_' + s.toUpperCase()

;

Boolean isEntity(Class c) :
c.metaType == dnc::MomentInterval ||
c.metaType == dnc::MIDetail ||
c.metaType == dnc::Party ||
c.metaType == dnc::Place ||
c.metaType == dnc::Thing ||
c.metaType == dnc::Description

;

// Currently, we only create backward reference for ManyToOne
relationships
Boolean generateReference(oocore::Reference ref) :

ref.type.isEntity() && ref.opposite.metaType == dnc::Association &&
ref.opposite.upperBound == -1

;