Goals

This document lists equivalences between Acceleo 2 and Acceleo 3 expressions.

Miscellaneous

Acceleo 2 Expression	Acceleo 3 Expression (OCL)
<%metamodel http://www.eclipse.org/uml2/2.0.0/UML%>	[module module_name('http://www.eclipse.org/uml2/2.0.0/UML')/]
<%import module.mt%>	[import module/]
<%import service.java%>	Services no longer need to be imported
<%list + object%>	[list->including(object)/]
<%object + list%>	[object->union(list)/]
<%list1 + list2%>	[list1->union(list2)/]
<%string + object%>	[string + object/]
<%list - object%>	[list->excluding(object)/]
<%list1 - list2%>	[list1->asSet() - list2->asSet()/] (Note that this no longer keeps duplicates, which is not strictly equivalent to Acceleo 2)
<%list1 || list2%>	[list1->union(list2)/]
<%list && object%>	[list->select(element | element = object)/]
<%list1 && list2%>	[list1->iterate(element; result : Sequence(T) = Sequence{} | if list2->includes(element) then result->including(element) else result endif)/]
<%list1 == list2%>	[list1 = list2/]
<%list1 != list2%>	[list1 <> list2/]
<%object != object%>	[object <> object/]
<%! boolean%>	[not boolean/]

EObject Services

Acceleo 2 Expression	Acceleo 3 Expression (OCL)
<%x.eAllContents%>	[x.eAllContents()/]
<%x.eAllContents("EClass")%>	[x.eAllContents(EClass)/]
<%x.eClass%>	[x.eClass()/]
<%x.eContainer%>	[x.eContainer()/]
<%x.eContainer("EPackage")%>	[x.eContainer(EPackage)/]
<%x.eContainingFeature%>	[x.eContainingFeature()/]
<%x.eContainmentFeature%>	[x.eContainmnentFeature()/]
<%x.eContents%>	[x.eContents()/]
<%x.eCrossReferences%>	[x.eCrossReferences()/]
<%x.eResource%>	[x.eResource()/]
<%x.eResourceName%>
<%x.getRootContainer%>	[x.ancestors()->last()/]
<%load("//UML2_LIBRARIES/UML2PrimitiveTypes.library.uml2")%>	No direct equivalent : Acceleo 3 accepts more than one model element as arguments of a generation. An alternative would be to use a custom Java service for this need.

Request Services

Acceleo 2 Expression	Acceleo 3 Expression (OCL)
<%list.select("eAttributes.nSize() > 0")%>	[list->select(eAttributes->size() > 0)/]
<%list.select("eAttributes.nSize()", "0")%>	[list->select(eAttributes->size() = 0)/]
<%list.delete("eAttributes.nSize() > 0")%>	[list->reject(eAttributes->size() > 0)/]
<%list.delete("eAttributes.nSize()", "0")%>	[list->reject(eAttributes->size() = 0)/]
<%evaluate("2 + 4")%>

Resource Services

Acceleo 2 Expression	Acceleo 3 Expression (OCL)
<%getFileContent("C:/Obeo/models/MyModel.xmi")%>
<%getChainPath%>

String Services

Acceleo 2 Expression	Acceleo 3 Expression (OCL)
<%x.length%>	[x.size()/]
<%x.toUpperCase%>	[x.toUpper()/]
<%x.toLowerCase%>	[x.toLower()/]
<%x.toU1Case%>	[x.toUpperFirst()/]
<%x.toL1Case%>	[x.toLowerFirst()/]
<%x.substring(1, 3)%>	[x.substring(2, 3)/]
<%x.substring(1)%>	[x.substring(2)/]
<%x.replaceAll("test", "replaced")%>	[x.replaceAll('test', 'replaced')/]
<%x.replaceAll("w", "$0")%>	[x.replaceAll('\w', '$0')/]
<%x.replaceFirst("test", "replaced")%>	[x.replace('test', 'replaced')/]
<%x.replaceFirst("w", "$0")%>	[x.replace('\w', '$0')/]
<%x.trim%>	[x.trim()/]
<%x.startsWith(y)%>	[x.startsWith(y)/]
<%x.endsWith(y)%>	[x.endsWith(y)/]
<%x.equalsIgnoreCase(y)%>	[x.equalsIgnoreCase(y)/]
<%x.matches(y)%>	[x.matches(y)/]
<%x.charAt(4)%>	[x.substring(5, 5)/]
<%x.indexOf(y)%>	[x.index(y)/]
<%x.indexOf(y, 4)%>	[x.substring(5, x.size()).index(y) + 4/]
<%x.lastIndexOf(y)%>	[x.lastIndex(y)/]
<%x.lastIndexOf(y, 4)%>	[x.substring(5, x.size()).lastIndex(y) + 4/]
<%x.split(y)%>	No direct equivalent, use String::tokenize(String)
<%x.indentSpace%>	[x.replaceAll('rn|r|n', '$0 ')/]
<%x.indentTab%>	[x.replaceAll('rn|r|n', '$0t')/]

System Services

Acceleo 2 Expression	Acceleo 3 Expression (OCL)
<%i()%>	[i/]
<%args(0)%>	arguments are explicit and named in Acceleo 3

XPath Services

Acceleo 2 Expression	Acceleo 3 Expression (OCL)
<%x.ancestor%>	[x.ancestors()/]
<%x.parent%>	[x.eContainer()/]
<%self%>	[self/]
<%x.child%>	[x.eContents()/]
<%x.descendant%>	[x.eAllContents()/]
<%x.precedingSibling%>	[x.precedingSiblings()/]
<%x.preceding%>
<%x.followingSibling%>	[x.followingSiblings()/]
<%x.following%>

ENode Services

Acceleo 2 Expression	Acceleo 3 Expression (OCL)
<%eObject.adapt("EObject")%>	[eObject/]
<%eObject.adapt("ENodeList")%>	[if (eObject.oclIsUndefined())][Sequence{}/][else][Sequence{eObject}/][/if]
<%eObject.adapt("String")%>	[if (eObject.oclIsUndefined())][''/][else][eObject.toString()/][/if]
<%eObject.adapt("Boolean")%>	[not eObject.oclIsUndefined()/]
<%eObject.adapt("int")%>	[eObject->size()/]
<%eObject.adapt("double")%>	[eObject->size().toString().toReal()/]
<%eObject.adapt("List")%>	[if (eObject.oclIsUndefined())][Sequence{}/][else][Sequence{eObject}/][/if]
<%eObject.adapt("ENode")%>	[eObject/]
<%list.adapt("EObject")%>	[if (list.oclIsUndefined())][null/][elseif (list->size() == 0)][else][list.at(0)/][/if]
<%list.adapt("ENodeList")%>	[if (list.oclIsUndefined())][Sequence{}/][else][list/][/if]
<%list.adapt("String")%>	[if (list.oclIsUndefined())][''/][else][list.toString()/][/if]
<%list.adapt("Boolean")%	[list->size() > 0/]
<%list.adapt("int")%>	[list->size()/]
<%list.adapt("double")%>	[list->size().toString().toReal()/]
<%list.adapt("List")%>	[if (list.oclIsUndefined())][Sequence{}/][else][list/][/if]
<%list.adapt("ENode")%>	[list/]
<%string.adapt("EObject")%>	can only return empty enodes in Acceleo 2, so migration is simply "nothing"
<%string.adapt("ENodeList")%>	[if (string.oclIsUndefined())][Sequence{}/][else][Sequence{string}/][/if]
<%string.adapt("String")%>	[string/]
<%string.adapt("Boolean")%>	[string.equalsIgnoreCase('true')/]
<%string.adapt("int")%>	[string.toInt()/]
<%string.adapt("double")%>	[string.toReal()/]
<%string.adapt("List")%>	[if (string.oclIsUndefined())][Sequence{}/][else][Sequence{string}/][/if]
<%string.adapt("ENode")%>	[string/]
<%boolean.adapt("EObject")%>	can only return empty enodes in Acceleo 2, so migration is simply "nothing"
<%boolean.adapt("ENodeList")%>	[if (boolean.oclIsUndefined())][Sequence{}/][else][Sequence{boolean}/][/if]
<%boolean.adapt("String")%>	[if (boolean.oclIsUndefined())][''/][else][boolean.toString()/][/if]
<%boolean.adapt("Boolean")%>	[not boolean.oclIsUndefined() and boolean/]
<%boolean.adapt("int")%>	[if (not boolean.oclIsUndefined() and boolean)][1/][else][0/][/if]
<%boolean.adapt("double")%>	[if (not boolean.oclIsUndefined() and boolean)][1.0/][else][0.0/][/if]
<%boolean.adapt("List")%>	[if (boolean.oclIsUndefined())][Sequence{}/][else][Sequence{boolean}/][/if]
<%boolean.adapt("ENode")%>	[boolean/]
<%int.adapt("EObject")%>	can only return empty enodes in Acceleo 2, so migration is simply "nothing"
<%int.adapt("ENodeList")%>	[if (int.oclIsUndefined())][Sequence{}/][else][Sequence{int}/][/if]
<%int.adapt("String")%>	[if (int.oclIsUndefined())][''/][else][int.toString()/][/if]
<%int.adapt("Boolean")%>	[not int.oclIsUndefined() and int > 0/]
<%int.adapt("int")%>	[if (int.oclIsUndefined())][0/][else][int/][/if]
<%int.adapt("double")%>	[if (int.oclIsUndefined())][0.0/][else][int.toString().toReal()/][/if]
<%int.adapt("List")%>	[if (int.oclIsUndefined())][Sequence{}/][else][Sequence{int}/][/if]
<%int.adapt("ENode")%>	[int/]
<%double.adapt("EObject")%>	can only return empty enodes in Acceleo 2, so migration is simply "nothing"
<%double.adapt("ENodeList")%>	[if (double.oclIsUndefined())][Sequence{}/][else][Sequence{double}/][/if]
<%double.adapt("String")%>	[if (double.oclIsUndefined())][''/][else][double.toString()/][/if]
<%double.adapt("Boolean")%>	[not double.oclIsUndefined() and double > 0/]
<%double.adapt("int")%>	[if (double.oclIsUndefined())][0/][else][double.toString().toInt()/][/if]
<%double.adapt("double")%>	[if (double.oclIsUndefined())][0.0/][else][double/][/if]
<%double.adapt("List")%>	[if (double.oclIsUndefined())][Sequence{}/][else][Sequence{double}/][/if]
<%double.adapt("ENode")%>	[double/]
<%list.cast("EClass")%>	[list->select(not oclIsKindOf(EObject) or oclIsKindOf(EClass))/]
<%list.filter("EClass")%>	[list->select(not oclIsKindOf(EObject) or oclIsKindOf(EClass))/]
<%current()%>	[self/]
<%current(1)%>	iterator variables are named in Acceleo 3
<%node.debug%>
<%node.trace%>
<%node.trace("name")%>
<%nPut("key", object)%>
<%nGet("key")%>
<%nPeek%>
<%nPop%>
<%nPush%>
<%list.nMinimize%>	[list->asOrderedSet()->asSequence()/]
<%list.minimize%>	[list->asOrderedSet()->asSequence()/]
<%list.nContains(item)%>	[list->includes(item)/]
<%list.nFirst%>	[list->first()/]
<%list.nLast%>	[list->last()/]
<%list.nGet(0)%>	[list->at(0)/]
<%list.nGet(0, 1)%>	[list->subSequence(1, 2)/]
<%list.nReverse%>	[list->reverse()/]
<%list.reverse%>	[list->reverse()/]
<%list.nSize%>	[list->size()/]
<%list.nSort%>	[list->sortedBy(toString())/]
<%list.nSort(name)%>	[list->sortedBy(name)/]
<%list.sort%>	[list->sortedBy(toString())->asOrderedSet()->asSequence()/]
<%list.sort(name)%>	[list->sortedBy(name)->asOrderedSet()->asSequence()/]
<%list.sep(",")%>	[list->sep(',')/]
<%list.sepStr(",")%>	[list->sep(',')/]
<%node.toString%>	[node.toString()/]
<%eObject.until("eContainer", "EClass")%>

Context Services

Acceleo 2 Expression	Acceleo 3 Expression (OCL)
<%get("key")%>
<%peek%>
<%pop%>
<%push%>
<%put("key", object)

Properties Services

Acceleo 2 Expression	Acceleo 3 Expression (OCL)
<%getBestProperty("partial.key")%>
<%getProperty("key")%>	[getProperty('key')/]
<%getProperty("propertiesFile", "key")%>	[getProperty('propertiesFile', 'key')/]