The OO-H method C. Cachero, J. Gómez, A. Párraga, O. Pastor DLSI. Universidad de Alicante DSIC. Universidad Politécnica de Valencia SPAIN June 2001Valencia.

The OO-H method The OO-H method

C. Cachero, J. Gómez, A. Párraga, O. PastorC. Cachero, J. Gómez, A. Párraga, O. Pastor

DLSI. Universidad de Alicante DLSI. Universidad de Alicante

DSIC. Universidad Politécnica de Valencia DSIC. Universidad Politécnica de Valencia

SPAIN SPAIN

June 2001Valencia

Valencia June 2001 2

OO-H Objetives

• Definition of new views that provide existing software engineering approaches (UML-compliant models) with interface modelling capabilities.

• Inclusion of reuse mechanisms in the model refinement process.


OO-H is not...

• An Application Modelling Tool BUT an Interface Modelling Tool.

• A methodology for developing web sites BUT a method to model and integrate high quality interfaces with preexisting business logic modules.


Pattern Catalog

OO-H: an overview


OO-H Design Process

refinementsrefinements

Class DiagramClass Diagram

Customer

Order

ScheduledDelivery

Product

Salesperson

NAD’sNAD’s

BillCustomer

UpdateMarketing

Inventory

AuthorizeCredit

OrderEntry

ScheduleDelivery

APD’s APD’s

htmlxmlwml

aspjsp

pyth

1..N1..N1..N1..N

DESIGN PROCESSDESIGN PROCESS

1. Start from Class Diagram and 1. Start from Class Diagram and Use Case DiagramUse Case Diagram

2. Create a NAD instance2. Create a NAD instance

3. Generate a Default APD3. Generate a Default APD

4. Apply refinements to APD4. Apply refinements to APD

5. Generate deliverables5. Generate deliverables

PatternCatalog

Use Case DiagramUse Case Diagram

Main risks:- Lack of support in the case for filters and connection with logic- Upload of files not supported- Too short a schedule for developing the system

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NAD (I): ConstructsModelling Constructs:

Decorators:

• Collections

• Navigation Classes

• Visibility (V|R|H)• Perspectives (P)

• Navigation Targets

• Meta attributes • Patterns (Pt)• Filters (F)

• Navigation Links

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NAD (II): Navigation Links

• Six types: I-Links, T-Links, R-Links, X-Links, S-Links, Sr-Links

• Metamodel attributes:• Visualization• User Interaction• Application Scope

• Activation Links


NAD (III): Patterns & Filters

PATTERNS • Indexing • Navigation

FILTERS• In origin (Fo)• In destination (Fd)

• User-defined• Domain-dependent • $, $$


NAD (IV): Parameter Interaction

• Defined inside the Service Links

• 5 Introduction Modes• Hidden• Constant• Immediate• Selection• Navigation

• They have an associated Response Link

Associated Expression


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Main risks:- Lack of support in the case for filters and connection with logic- Upload of files not supported- Too short a schedule for developing the system

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Evaluate Papers

View Process Data


PCChair NAD (level 0)

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DN3ASSIGN ARTICLES

DN4PRE-REGISTER

PROGRAM COMMITTEE

DN8EVALUATE ARTICLES

DN2MANAGE CONFERENCE

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PROCESS DATA

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NAD (V): Final NAD

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(View APD)

(View NC pt)

(View CD pt)(View TS pt)


• Abstract pages = XML documents.

• A different template definition (DTD) for each dimension of the interface: tStruct, tForm, tFunction, tLink, tWidget, tLayout, tLocation, tStyle, TExternal(*), TLogic(*). Facilitates Reuse

• Automatic derivation of a default APD out of the NAD.

• Refined by means of patterns and its corresponding transformation rules.

APD (I): General Concepts


XMLTEMPLATESXMLTEMPLATES

TFORM TFORM

TLINK TLINK

TWIDGET TWIDGET

TLAYOUT TLAYOUT

TLOCATION TLOCATION

TSTYLE TSTYLE

TSTRUCT TSTRUCT

TEXTERNAL TEXTERNAL

APD (II): Page Taxonomy

TFUNCTION TFUNCTION

TLOGIC TLOGIC


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APD (III): Default APD (View NAD)


Example of Template: TLink


APD Refinements (I) Two types:

• Pattern-driven refinements

• Designer-dependent refinements

OO-H Patterns: Transformation Rules• Python scripts easily integrated in the tool.

• They can affect every construct of the APD.

• The effects don’t necessarily appear on the diagram.


Identification Pattern Command Control PatternsPopulation Filtering Pattern Static Navigation Patterns Command Observer Pattern

Cycle Flow Patterns Jump Patterns Confirmation PatternTree Index Annotation Pattern

Sequence Guided Tour Chooser PatternSplit-Join Index Guided Tour Navigation Observer PatternDynamic Showall Navigation Selector Pattern

Navigation PatternsInteraction Patterns

Information Patterns

Dynamic Navigation Patterns

Active Agent Observer Pattern

User Schema Evolution PatternsMultiview Pattern

Location PatternInterface State PatternSystem State Pattern

Destination Announcement PatternError Pattern

Success PatternHelp Pattern

Population Observer Pattern

Interface Behavior Pattern Catalog


Final step: the CLD

• It affects the XML content of tExternal, tLayout, tWidget, tLocation and tStyle (pure visualization).

• ‘Multiview pattern’ is supported by means of different layouts.

• The appearance specification is adapted (not lost) when the APD structure changes: design reuse.


Menu PCChair

DN3ASSIGN ARTICLES

DN4PRE-REGISTER

PROGRAM COMMITTEE

DN8EVALUATE ARTICLES

DN2MANAGE CONFERENCE

DN11VIEW

PROCESS DATA

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Generated Prototype (I)





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Generated Prototype (II)



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Generated Prototype (III)



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Generated Prototype (IV)


Main Contributions• Modelling constructs for the definition of user-service interaction

• Taxonomy of XML templates tackling the different perspectives involved in interface definition

• Notion of Transformation Rule for Pattern implementation

• Case Tool to support the OO-H design process, with shortcuts for the construction of the different diagrams


Future Work • Detection of new Patterns and inclusion of correspoding TR in the CASE tool

• Inclusion of Frameworks, with the same TR philosophy

• Inclusion of Advanced Personalization Features

• Event Modelling

• Client Logic Modelling

• ...


For further comments...

THANKS FOR YOUR ATTENTION!!!

[email protected]

[email protected]

[email protected]

[email protected]

The OO-H method C. Cachero, J. Gómez, A. Párraga, O. Pastor DLSI. Universidad de Alicante DSIC. Universidad Politécnica de Valencia SPAIN June 2001Valencia.

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