How to use the pyecore.ecore.EDataType function in pyecore

if feat.many:
        index = parent.__getattribute__(name).index(obj)
        return '{0}/@{1}.{2}'.format(_build_path(parent), name, str(index))
    else:
        return '{0}/{1}'.format(_build_path(parent), name)

if __name__ == '__main__':
    rset = ResourceSet()

    # UMLPrimitiveTypes Creation
    umltypes = Ecore.EPackage('umltypes')
    String = Ecore.EDataType('String', str)
    Boolean = Ecore.EDataType('Boolean', bool, False)
    Integer = Ecore.EDataType('Integer', int, 0)
    UnlimitedNatural = Ecore.EDataType('UnlimitedNatural', int, 0)
    Real = Ecore.EDataType('Real', float, 0.0)
    umltypes.eClassifiers.extend([String, Boolean, Integer, UnlimitedNatural, Real])
    rset.resources['platform:/plugin/org.eclipse.uml2.types/model/Types.ecore'] = umltypes

    # Register Ecore metamodel instance
    resource = rset.get_resource(URI('xmi-tests/Ecore.ecore'))
    rset.resources['platform:/plugin/org.eclipse.emf.ecore/model/Ecore.ecore'] = resource.contents[0]

    resource = rset.get_resource(URI('xmi-tests/UML.ecore'))

type_as_factory=True)
EFeatureMapEntry = EDataType('EFeatureMapEntry', dict, type_as_factory=True)
EDiagnosticChain = EDataType('EDiagnosticChain', str)
ENativeType = EDataType('ENativeType', object)
EJavaObject = EDataType('EJavaObject', object)
EDate = EDataType('EDate', datetime,
                  from_string=parse_date,
                  to_string=lambda d: d.strftime('%Y-%m-%dT%H:%M:%S.%f%z'))
EBigDecimal = EDataType('EBigDecimal', Decimal, from_string=Decimal)
EByte = EDataType('EByte', bytes)
EByteObject = EDataType('EByteObject', bytes)
EByteArray = EDataType('EByteArray', bytearray)
EChar = EDataType('EChar', str)
ECharacterObject = EDataType('ECharacterObject', str)
EShort = EDataType('EShort', int, from_string=int)
EJavaClass = EDataType('EJavaClass', type)


EModelElement.eAnnotations = EReference('eAnnotations', EAnnotation,
                                        upper=-1, containment=True)
EAnnotation.eModelElement = EReference('eModelElement', EModelElement,
                                       eOpposite=EModelElement.eAnnotations)
EAnnotation.source = EAttribute('source', EString)
EAnnotation.details = EAttribute('details', EStringToStringMapEntry)
EAnnotation.references = EReference('references', EObject, upper=-1)
EAnnotation.contents = EReference('contents', EObject, upper=-1,
                                  containment=True)

ETypedElement.ordered = EAttribute('ordered', EBoolean, default_value=True)
ETypedElement.unique = EAttribute('unique', EBoolean, default_value=True)
ETypedElement._lower = EAttribute('lower', EInteger, derived=True)
ETypedElement.lowerBound = EAttribute('lowerBound', EInteger)

Double = EDataType('Double', instanceClassName='double', from_string=float)

DoubleObject = EDataType('DoubleObject', instanceClassName='java.lang.Double',
                         from_string=float)

Duration = EDataType('Duration',
                     instanceClassName='javax.xml.datatype.Duration')

ENTITIES = EDataType('ENTITIES', instanceClassName='java.util.List')

ENTITIESBase = EDataType('ENTITIESBase', instanceClassName='java.util.List')

ENTITY = EDataType('ENTITY', instanceClassName='java.lang.String')

Float = EDataType('Float', instanceClassName='float', from_string=float)

FloatObject = EDataType('FloatObject', instanceClassName='java.lang.Float',
                        from_string=float)

GDay = EDataType('GDay',
                 instanceClassName='javax.xml.datatype.XMLGregorianCalendar')

GMonth = EDataType('GMonth',
                   instanceClassName='javax.xml.datatype.XMLGregorianCalendar')

GMonthDay = EDataType('GMonthDay',
                      instanceClassName='javax.xml.datatype.'
                                        'XMLGregorianCalendar')

GYear = EDataType('GYear',
                  instanceClassName='javax.xml.datatype.XMLGregorianCalendar')

# meta-meta level
EString = EDataType('EString', str)
ENamedElement.name = EAttribute('name', EString)
ENamedElement.name._isset.add(ENamedElement.name)  # special case
EString._isset.add(ENamedElement.name)  # special case

EBoolean = EDataType('EBoolean', bool, False,
                     to_string=lambda x: str(x).lower(),
                     from_string=lambda x: x in ['True', 'true'])
EBooleanObject = EDataType('EBooleanObject', bool,
                           to_string=lambda x: str(x).lower(),
                           from_string=lambda x: x in ['True', 'true'])
EInteger = EDataType('EInteger', int, 0, from_string=int)
EInt = EDataType('EInt', int, 0, from_string=int)
ELong = EDataType('ELong', int, 0, from_string=int)
ELongObject = EDataType('ELongObject', int, from_string=int)
EIntegerObject = EDataType('EIntegerObject', int, from_string=int)
EBigInteger = EDataType('EBigInteger', int, from_string=int)
EDouble = EDataType('EDouble', float, 0.0, from_string=float)
EDoubleObject = EDataType('EDoubleObject', float, from_string=float)
EFloat = EDataType('EFloat', float, 0.0, from_string=float)
EFloatObject = EDataType('EFloatObject', float, from_string=float)
EStringToStringMapEntry = EDataType('EStringToStringMapEntry', dict,
                                    type_as_factory=True)
EFeatureMapEntry = EDataType('EFeatureMapEntry', dict, type_as_factory=True)
EDiagnosticChain = EDataType('EDiagnosticChain', str)
ENativeType = EDataType('ENativeType', object)
EJavaObject = EDataType('EJavaObject', object)
EDate = EDataType('EDate', datetime,
                  from_string=parse_date,

name = 'type'
nsURI = 'http://www.eclipse.org/emf/2003/XMLType'
nsPrefix = 'ecore.xml.type'

eClass = EPackage(name=name, nsURI=nsURI, nsPrefix=nsPrefix)

eClassifiers = {}
getEClassifier = partial(Ecore.getEClassifier, searchspace=eClassifiers)

AnySimpleType = EDataType('AnySimpleType',
                          instanceClassName='java.lang.Object')

AnyURI = EDataType('AnyURI', instanceClassName='java.lang.String')

Base64Binary = EDataType('Base64Binary', instanceClassName='byte[]')

Boolean = EDataType('Boolean', instanceClassName='boolean',
                    to_string=lambda x: str(x).lower(),
                    from_string=lambda x: x in ['True', 'true'])

BooleanObject = EDataType('BooleanObject',
                          instanceClassName='java.lang.Boolean',
                          to_string=lambda x: str(x).lower(),
                          from_string=lambda x: x in ['True', 'true'])

Byte = EDataType('Byte', instanceClassName='byte')

ByteObject = EDataType('ByteObject', instanceClassName='java.lang.Byte')

Date = EDataType('Date',
                 instanceClassName='javax.xml.datatype.XMLGregorianCalendar')

DoubleObject = EDataType('DoubleObject', instanceClassName='java.lang.Double',
                         from_string=float)

Duration = EDataType('Duration',
                     instanceClassName='javax.xml.datatype.Duration')

ENTITIES = EDataType('ENTITIES', instanceClassName='java.util.List')

ENTITIESBase = EDataType('ENTITIESBase', instanceClassName='java.util.List')

ENTITY = EDataType('ENTITY', instanceClassName='java.lang.String')

Float = EDataType('Float', instanceClassName='float', from_string=float)

FloatObject = EDataType('FloatObject', instanceClassName='java.lang.Float',
                        from_string=float)

GDay = EDataType('GDay',
                 instanceClassName='javax.xml.datatype.XMLGregorianCalendar')

GMonth = EDataType('GMonth',
                   instanceClassName='javax.xml.datatype.XMLGregorianCalendar')

GMonthDay = EDataType('GMonthDay',
                      instanceClassName='javax.xml.datatype.'
                                        'XMLGregorianCalendar')

GYear = EDataType('GYear',
                  instanceClassName='javax.xml.datatype.XMLGregorianCalendar')

GYearMonth = EDataType('GYearMonth',

NMTOKEN = EDataType('NMTOKEN', instanceClassName='java.lang.String')

NMTOKENS = EDataType('NMTOKENS', instanceClassName='java.util.List')

NMTOKENSBase = EDataType('NMTOKENSBase', instanceClassName='java.util.List')

NonNegativeInteger = EDataType('NonNegativeInteger',
                               instanceClassName='java.math.BigInteger',
                               from_string=int)

NonPositiveInteger = EDataType('NonPositiveInteger',
                               instanceClassName='java.math.BigInteger',
                               from_string=int)

NormalizedString = EDataType('NormalizedString',
                             instanceClassName='java.lang.String')

NOTATION = EDataType('NOTATION', instanceClassName='javax.xml.namespace.QName')

PositiveInteger = EDataType('PositiveInteger',
                            instanceClassName='java.math.BigInteger',
                            from_string=int)

QName = EDataType('QName', instanceClassName='javax.xml.namespace.QName')

Short = EDataType('Short', instanceClassName='short', from_string=int)

ShortObject = EDataType('ShortObject', instanceClassName='java.lang.Short',
                        from_string=int)

String = EDataType('String', instanceClassName='java.lang.String')

EPackage.eSubpackages = EReference('eSubpackages', EPackage,
                                   upper=-1, containment=True)
EPackage.eSuperPackage = EReference('eSuperPackage', EPackage,
                                    lower=1, eOpposite=EPackage.eSubpackages)

EClassifier.ePackage = EReference('ePackage', EPackage,
                                  eOpposite=EPackage.eClassifiers)
EClassifier.eTypeParameters = EReference('eTypeParameters', ETypeParameter,
                                         upper=-1, containment=True)
EClassifier.instanceTypeName = EAttribute('instanceTypeName', EString)
EClassifier.instanceClass = EAttribute('instanceClass', EJavaClass)
EClassifier.defaultValue = EAttribute('defaultValue', EJavaObject)
EClassifier.instanceTypeName = EAttribute('instanceTypeName', EString,
                                          volatile=True, unsettable=True)

EDataType.instanceClassName_ = EAttribute('instanceClassName', EString)
EDataType.serializable = EAttribute('serializable', EBoolean)

EClass.abstract = EAttribute('abstract', EBoolean)
EClass.eStructuralFeatures = EReference('eStructuralFeatures',
                                        EStructuralFeature,
                                        upper=-1, containment=True)
EClass.eGenericSuperTypes = EReference('eGenericSuperTypes', EGenericType,
                                       containment=True, upper=-1)
EClass.eAttributes_ = EReference('eAttributes', EAttribute,
                                 upper=-1, derived=True)
EClass.eReferences_ = EReference('eReferences', EReference,
                                 upper=-1, derived=True)
EClass.eSuperTypes = EReference('eSuperTypes', EClass, upper=-1)
EClass.eOperations = EReference('eOperations', EOperation,
                                upper=-1, containment=True)
EClass.instanceClassName = EAttribute('instanceClassName', EString)

GYear = EDataType('GYear',
                  instanceClassName='javax.xml.datatype.XMLGregorianCalendar')

GYearMonth = EDataType('GYearMonth',
                       instanceClassName='javax.xml.datatype.'
                                         'XMLGregorianCalendar')

HexBinary = EDataType('HexBinary', instanceClassName='byte[]')

ID = EDataType('ID', instanceClassName='java.lang.String')

IDREF = EDataType('IDREF', instanceClassName='java.lang.String')

IDREFS = EDataType('IDREFS', instanceClassName='java.util.List')

IDREFSBase = EDataType('IDREFSBase', instanceClassName='java.util.List')

Int = EDataType('Int', instanceClassName='int', from_string=int)

Integer = EDataType('Integer', instanceClassName='java.math.BigInteger',
                    from_string=int)

IntObject = EDataType('IntObject', instanceClassName='java.lang.Integer',
                      from_string=int)

Language = EDataType('Language', instanceClassName='java.lang.String')

Long = EDataType('Long', instanceClassName='long', from_string=int)

LongObject = EDataType('LongObject', instanceClassName='java.lang.Long',
                       from_string=int)

EBigInteger = EDataType('EBigInteger', int, from_string=int)
EDouble = EDataType('EDouble', float, 0.0, from_string=float)
EDoubleObject = EDataType('EDoubleObject', float, from_string=float)
EFloat = EDataType('EFloat', float, 0.0, from_string=float)
EFloatObject = EDataType('EFloatObject', float, from_string=float)
EStringToStringMapEntry = EDataType('EStringToStringMapEntry', dict,
                                    type_as_factory=True)
EFeatureMapEntry = EDataType('EFeatureMapEntry', dict, type_as_factory=True)
EDiagnosticChain = EDataType('EDiagnosticChain', str)
ENativeType = EDataType('ENativeType', object)
EJavaObject = EDataType('EJavaObject', object)
EDate = EDataType('EDate', datetime,
                  from_string=parse_date,
                  to_string=lambda d: d.strftime('%Y-%m-%dT%H:%M:%S.%f%z'))
EBigDecimal = EDataType('EBigDecimal', Decimal, from_string=Decimal)
EByte = EDataType('EByte', bytes)
EByteObject = EDataType('EByteObject', bytes)
EByteArray = EDataType('EByteArray', bytearray)
EChar = EDataType('EChar', str)
ECharacterObject = EDataType('ECharacterObject', str)
EShort = EDataType('EShort', int, from_string=int)
EJavaClass = EDataType('EJavaClass', type)


EModelElement.eAnnotations = EReference('eAnnotations', EAnnotation,
                                        upper=-1, containment=True)
EAnnotation.eModelElement = EReference('eModelElement', EModelElement,
                                       eOpposite=EModelElement.eAnnotations)
EAnnotation.source = EAttribute('source', EString)
EAnnotation.details = EAttribute('details', EStringToStringMapEntry)
EAnnotation.references = EReference('references', EObject, upper=-1)
EAnnotation.contents = EReference('contents', EObject, upper=-1,