XMLSchema to TTCN-3 MappingXMLSchema to TTCN-3 Mapping

Importing XML schema based data types into TTCN-3

ETSI MTS #40, Berlin, Mar 2005 © FOKUS (2005)

Importing XMLSchema based Datatypes into TTCN-3Importing XMLSchema based Datatypes into TTCN-3

• Overview• XMLSchema built-in datatypes• XMLSchema data type components• Examples

ETSI MTS #40, Berlin, Mar 2005 © FOKUS (2005)

OverviewOverview

TTCN-3 core notation

ASN.1 Types and Values

IDL Interfaces and TypesXMLSchemaTypes

Other Types & Values

Tabular Format

Graphical Format

Other Presentation Formats

PlainText

TTCN-3 User

ETSI MTS #40, Berlin, Mar 2005 © FOKUS (2005)

XMLSchema BuiltIn Types IXMLSchema BuiltIn Types I

anyType

anySimpleType

duration dateTime time date gYearMonth gYear gMonthDay gDay gMonth

boolean base64Binary hexBinary float double anyURI QName NOTATION

all complex types

string decimal

integer

long

int

short

byte

nonNegativeIntegernonPositiveInteger

negativeInteger unsignedLong

unsignedInt

unsignedShort

normalizedString

token

language Name NMToken

NCName NMTokens

positiveInteger

unsignedByte

EntityIDREFID

EntitiesIDREFS

primitive types

derived byrestrictions

derived bylists

hexstringhexstring

charstringcharstring

type integer positiveInteger (0 .. infinity) type integer positiveInteger (0 .. infinity)

type set of NMToken NMTokens type set of NMToken NMTokens

floatfloat

ETSI MTS #40, Berlin, Mar 2005 © FOKUS (2005)

XMLSchema Build-in Types IIXMLSchema Build-in Types II

• XSDAUX.ttcn3 module XSDAUX {

/* 1.string */

type charstring string;

/* 2.boolean */

type integer bitXSD(1,0);

type union booleanXSD

{

bitXSD bit,

boolean bool

}

/* 3.decimal */

type float decimal;

.....

}

ETSI MTS #40, Berlin, Mar 2005 © FOKUS (2005)

XMLSchema datatype componentsXMLSchema datatype components

minInclusive, maxExclusivepattern, enumeration, length ...

schema

alllist

sequence

choice

groupattributecomplexType element

include

import simpleType attributeGroup

attribute

attributeGrouprestriction

union

complexContent

all

choice

sequence

simpleContentextension

restriction

restriction

extension

group

attribute

attributeGroup

all choice sequence group attribute attributeGroup

simpleType facets

minInclusive, maxExclusivepattern, enumeration, length ...

attribute attributeGroup

setset

union

union

recordrecord

unionunion

set of …

set of …

record, union or set

record, union or set

facets

Subtype definition with length, or list restrictions.Ex: Type_string.ttcn3

Subtype definition with length, or list restrictions.Ex: Type_string.ttcn3

ETSI MTS #40, Berlin, Mar 2005 © FOKUS (2005)

ExampleExample

<xs:group name="cust"> <xs:choice> <xs:element name=„e1" type="xs:string"/> <xs:element name=„e2" type="xs:string"/> <xs:element name=„e3" type="xs:string"/> <xs:element name=„e4" type="xs:string"/> </xs:choice></xs:group>

<xs:complexType name=„ORDER"> <xs:choice> <xs:sequence>

<xs:group ref="cust" /> <xs:element name="E" type="xs:byte"/>

</xs:sequence>

<xs:element name=„E" type="xs:int"/> </xs:choice>

<xs:attribute name=„A" type="xs:string"/>

</xs:complexType>

type union cust__Global_Group { XSDAUX.string e1, XSDAUX.string e2, XSDAUX.string e3, XSDAUX.string e4}

type record SEQUENCE__1 {cust__Global_Group sequence__1,XSDAUX.byte E

}

type union CHOICE__2 { SEQUENCE__1 choice__1, XSDAUX.int E}

type charstring A__Attribute__1with {extension "Attribute"};

type set ORDER {CHOICE__2 choice,A__Attribute__1 A optional

}

XMLSchema TTCN-3

ETSI MTS #40, Berlin, Mar 2005 © FOKUS (2005)

The Work DoneThe Work Done

• Initial work by FOKUS in internal research and diploma thesis, 2002-2004

• Discussion of mapping in the TTmedal consortium, 2003-now

• Implementation and case studies• Draft prepared, March 2005• Face-to-face meeting, March 2005

ETSI MTS #40, Berlin, Mar 2005 © FOKUS (2005)

The DocumentThe Document

• 1Scope• 2 References• 3 Abbreviations• 4 Approach• 5 Mapping XSD

Schemas• 6 Ignored schema

components and properties

• 7 TTCN-3 module and namespaces

• 8 Name conversion

• 9 Mapping of built-in data types

• 10 Mapping of data type components

• Annex A (normative): Mapping of Built-In Types

• Annex B (normative): XSDAUX.ttcn3

• Annex C (informative): References

• Annex D (informative): Examples

ETSI MTS #40, Berlin, Mar 2005 © FOKUS (2005)

Contributors/ReviewersContributors/Reviewers

• FOKUS• NetHawk• Nokia • Fraunhofer ESK• University of Göttingen

ETSI MTS #40, Berlin, Mar 2005 © FOKUS (2005)

XML MeetingXML Meeting

• Review of the draft• Discussion

• what to do with non supported features• support for XML values

ETSI MTS #40, Berlin, Mar 2005 © FOKUS (2005)

One issue for all mapping documentsOne issue for all mapping documents

• Name clashes with TTCN-3 keywords

• Consistent resolving rules for all mappings would be helpful

• Proposal to use a „_“ postfix together with an extension attribute indicating the original name

i.e. type boolean boolean_ with {

extension "XSD:boolean"

}

ETSI MTS #40, Berlin, Mar 2005 © FOKUS (2005)

Further TTCN-3 extensions?!Further TTCN-3 extensions?!

Pattern for float and integer

• Length for integer (number of decimal digits)• Different lengths for float (number of fractional

digits, etc.) ?• min and max facets of XML directly added to

TTCN-3 for string types, integer and float ?• whitspace facets for string types ? a more generic approach to „subtyping“ with facets

could be useful

ETSI MTS #40, Berlin, Mar 2005 © FOKUS (2005)

TimingTiming

• Completion till Oct. 2005• Adoption for ETSI MTS #41