COMP30231程序讲解、辅导Web/HTML程序、Java，Python编程语言讲解

日期：2021-02-02 11:28

School of Science and Technology

COURSEWORK ASSESSMENT ELEMENT

MODULE CODE COMP30231

MODULE TITLE Service-Centric Cloud Computing

MODULE LEADER Taha Osman

COMPONENT Coursework

TITLE Software Applications Integration using Web Services

LEARNING OUTCOMES

ASSESSED

K1 to K4 & S1-S4

WEIGHTING 60% of the overall module mark

DISTRIBUTION DATE 22

nd October 2019

SUBMISSION DATE

* Program demos during week beginning 25/1/2021

* Report hand-in Wed 04/02/2021

SUBMISSION METHOD

* Upload zipped development code folder(s) to the module

dropbox

* Submit the report to the module dropbox

NOTE

The usual University penalties apply for late submission

and plagiarism. Please consult your student handbook for

further details.

? Copyright 2020

ISYS40061: Service-Oriented Cloud Computing

Software Applications Integration using Web Services

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I. Assessment Requirements

The practical element (sections A & B) of the coursework will be viva examined. Please

have a top-level schematic diagram ready for the viva.

You should submit a coursework report documenting your solution and answers to the

research elements (sections C & D). The structure of the report should contain:

1. Self-evaluation of the achieved implementation (please be brief and precise, no

introductions or background information needed) including functional description of

your program, and discussion of your major design decisions. Please include toplevel

design diagrams only. Try to fit in 2-3 pages.

2. Maximum of 600 words for Section-C and any charts describing the results of your

experiments.

3. Maximum of 1000 words for Section-D. Again, please adhere to the required

comparison, with minimum introductory information.

4. List of references and appendices.

II. Assessment Scenario/Problem

The goal of this coursework is to demonstrate an understanding of using Service Oriented

Architecture principles in software applications integration. In the first section, you will

utilise web services to compose a Shares Brokering system. The Shares Brokering system

consists of a shares acquisition service that you should build yourself and an external

currency conversion service that you need to consume and integrate with the shares

acquisition service; both services can be complemented by consuming external APIs. The

research element of the coursework investigates using advanced (semantic-based)

techniques to further extend your application.

A - Core Web Service (weighting - 35%)

1. Implement Shares Brokering service

a) Current shares on trade should be held in an XML file based on an XSD schema

containing: company name, company symbol on the stock exchange, number of

available shares, a complex ‘share_price’ element containing currency and value, and

date of the last-update of the share price.

You can opt to use conventional structures to store the data (arrays, Lists, etc.) instead of XML objects.

However, this will affect the standard of your work and also progression into Section-B.

b) The web service should allow users to list shares details and update the number of

shares on offer when a purchase is made. You might opt to utilise JAXB to generate

helper Java classes, which allow reading and populating the XML documents.

You may choose to implement the core Web Service using as a RESTful service, but for full marks you

need to evidence that you can build & communicate a Shares data structure similar to what can be

provided by an XML Schema as in 1.a) above.

Client

Application

(C#/Java/JSP)

Currency Conv

Web service Shares Brokering

Web Service

Stock Quote

REST API

Directions

Web Service

Exchange Rate

REST API

(Google,

Openstreet)

ISYS40061: Service-Oriented Cloud Computing

Software Applications Integration using Web Services

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c) Implement a search functionality allowing customers to list shares’ offerings using

various criteria such as company details, highest price, etc. More sophisticated search

functionality will merit higher marks.

The choice of client is your decision. Java GUI Apps or JSP are more appreciated but should not be

attempted at the expense of providing core functionality.

B – Web Service Composition (weighting - 35%)

2. Integrate currency conversion service

Download the pre-coded project with the currency conversion web service from the

module’s NOW room site and deploy it. Consume the currency conversion service in the

shares brokering service to auto-convert the share price rate to the rate preferred by the

customer.

3. Extend functionality by utilising external REST APIs

a) Research and utilise external RESTful service to extend the functionality of your shares

brokering system. Example of such service can be:

? A service that returns up-to-date currency exchange rate.

? A service that returns the latest share value quote for a particular company.

b) Implement your own RESTful service to persist the output of the consumed REST API

for off-line use. For instance, your RESTful service can update the exchange rate of

your currency conversion service or the latest value of the share price.

In order to achieve the highest marks, you must show initiative and inventiveness beyond

the stated specification; the contribution of the advanced functionality depends on technical

challenge in its implementation. Examples include:

– utilising additional external REST APIs (e.g. to display relevant tweets or other info about the

shares company)

– implementing non-java clients to demonstrate SOA’s platform independence

– creating user accounts for clients allowing them to sell shares back to the brokering service

C – Analysis of Quality of services ‘QoS’ (weighting - 10%)

Referring to your implementation, describe SOA Web Services’ performance and scalability

challenges, in particular with the increase in service demand - such as the number of

concurrent client connections and the size of the payload (response messages). Highest

marks will be awarded to submissions that perform physical QoS testing for the developed

application.

Explain how Cloud Computing provision can address these issues, and referring to the

deployment model, elaborate on the challenges accompanying migration to the Cloud

Infrastructure.

ISYS40061: Service-Oriented Cloud Computing

Software Applications Integration using Web Services

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D – Application of Semantic Web and Linked Data technologies (weighting - 20%)

In the NOW room, find links to two articles discussing Semantic Web technologies and their

application to publish Open Linked Data on the web; perform the following tasks:

1. Carefully read and analyse the two papers, using external resources on the subject

matter of ‘Semantic Web’ and ‘Linked Open Data’ to assist your understanding of the

subject area.

2. Explore how you can utilise Semantic technologies to extend the application you built in

sections A&B to facilitate ‘smarter’ search for companies to trade shares with in the

stock exchange. The search should enable finding suitable companies whose

name/symbol/industry-section is not explicitly provided in the search keywords.

Refer to how the workflow of Domain Analysis, Ontology engineering, Semantic Tagging,

and Reasoning, contributes to your recommender system. Also describe how you can

consume Open Linked Datasets to boost its functionality. Endeavour to use other

sources of information (papers, articles, etc.).

III. Assessment Criteria

The development element of the coursework will be assessed during your program

demonstration. A marking grid will be used to assess the standard of implementing each

detail. You are encouraged to implement and document additional functionality to improve

your marks, but be aware that the lion’ share of the marks is awarded to the specified

requirements. Hence you are not advised to embark on developing any additional

functionality before implementing the essential requirements. Marks will not be awarded for

“attempted” functionality; your code must be fully operational.

The research element is assessed based on the submitted report. You must follow academic

report writing guidelines and properly reference any quoted material. Use the Internet (e.g.

Google Scholar) and NTU library one-search to research related solutions and technologies

and give your own understanding/analysis of the problems and proposed solutions.

Marking

The separate sections of your report will each have a grade awarded to them, as given in

NTU’s assessment scheme (e.g. Exceptional Distinction, Mid Commendation, High Pass,

Marginal Fail, etc.). The grade you achieve in a section will reflect how well that section

delivered the required material.

In addition, each section has a percentage weighting (given above) to show you how

important it is in the calculation of the overall grade of your work, i.e. the grade for your

report as a whole. [Note that the weightings given above add up to 100%].

Assessment Grading Guide

Each assessment element is awarded a grade according to the scale given below. The final

grade is determined by how well the criteria have been met overall and not the sum of the

individual aspects of the work.

ISYS40061: Service-Oriented Cloud Computing

Software Applications Integration using Web Services

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Software Development Sections (A & B)

Development of core web services and integration with external services to provide valueadded

composed applications

Class/Grade General Description

Exceptional First

Solution developed to a commercial standard with respect to all aspects of

software engineering for the back-end services and the UI design for persistent

client-end and an admin interface offering a range of toolability. Demonstration

of consuming external services beyond the specification and flawless

implementation of heterogeneous client to demonstrate SOA’s platform

independence.

First

Dist | Mid | High

Excellent implementation of web services composition beyond the specification

and evidence of sophisticated consumption of the output of an external RESTful

service using a presubscribed workflow. User-friendly GUI to a heterogeneous

client offering realistic search and browsing experience.

Consideration for the quality of service issues in the application design.

Upper Second

Com | Mid | High

A sound implementation of the core/integrated services with error management

and mitigation. Good search technology in the user interface. Persistent service

provider data and evidence of consumption of an external Restful service.

Lower Second

Pass | Mid | High

Good implementation of the core/integrated web services and workable

integration solution. Evidence of consuming an external web service and either

an element of advanced data/error processing or a user-friendly GUI

Third

Pass | Mid | High

Basic web-services implementation with ability to update server-side data upon

client requests with either fair search technology or fair integration of another

service into the application.

Marginal Fail

Basic non-XML (or JSON) web service implementation or a solution not powered

by web services but includes elements of XML or JSON processing.

Static server data and no implementation of search technology

Fail

Low | Mid

Implemented services or application program do not fulfil the basic client

specifications

ISYS40061: Service-Oriented Cloud Computing

Software Applications Integration using Web Services

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Analysis and Research Sections (C & D)

Analysis of SOA’s QoS and Contrast of workflow-based and Semantic Web / Linked Data

information enrichment and intelligent retrieval approaches

Class/Grade General Description

Exceptional First

Exceptional knowledge and understanding of role of the Semantic Web, its

development cycle, and Linked Data technologies and confidently argued

utilisation for the use-case in hand. Evidenced by references to and use of

independent reading/research to support the arguments put forward for utilising

either method in current solutions.

Exceptional analysis of several SOA QoS beyond that prescribed in the research

question backed up by critical analysis of tested QoS criteria. Outcome useful as

a methodology for selecting the suitable class of applications to implement

within a SOA infrastructure. Reported research may achieve or be close to

publishable standard.

First

Dist | Mid | High

Excellent knowledge and understanding of the role of Semantic Web in

Knowledge Management and intelligent information retrieval, adequately

exemplified by the application of the Semantic Engineering development cycle to

the use-case requirements including consumption of appropriate public datasets.

Evidenced understanding of the suitability of both approaches to the current

needs of the IT industry.

The QoS challenges are thoroughly analysed with reference to the implemented

solution, and critical analyses of the potential overheads are associated with

credible solutions to mitigate the constraints of the underlying computing

infrastructure. Evidence of extensive and critical evaluation of relevant research

material throughout and excellent reporting. Findings are beyond the

expectation of the level.

Upper Second

Com | Mid | High

A sound understanding of the Semantic Web/Linked Data development cycle,

including domain analysis, semantic tagging and intelligent reasoning. Evidence

of applying ontology engineering or consumption of Linked Datasets to the

proposed use-case.

Good analysis of SOA QoS challenges with respect to the implemented solution,

but lacks proposal of methods to reduce the incurred overheads. Evidence of

appropriate selection and critical evaluation of relevant research.

Lower Second

Pass | Mid | High

Broad knowledge and understanding of the Semantic Web/Linked Data

technologies approaches in knowledge enrichment/inference and intelligent

information retrieval, but attempt at relating the understanding to the proposed

use-case is basic and lacking critical analysis of the requirements and argument

of the improvements offered.

Basic analyses of the QoS, but lacks depth in understanding the role of SOA

design patterns and middleware infrastructure in maintaining the quality of the

provided services. Limited referencing to support the reached conclusions

Third

Pass | Mid | High

Knowledge of semantic technologies is sufficient to generically relate to an

alternative approach to information retrieval, but fails to make meaningful

synthesis.

Basic understanding of SOA QoS with no references to the related bottlenecks in

the implemented solution. Arguments are unsubstantiated.

Marginal Fail

Insufficient knowledge and understanding of the role of semantic approach to

knowledge management and information retrieval – descriptive rather than

analytical.

Basic understanding of QoS challenges, but not necessarily specific to the SOA

infrastructure.

Fail

Low | Mid

At best, some descriptive information may be present about the QoS in SOA and

basic definitions of semantic and Linked Data technologies but further

coherence, structure and study are required for it to be workable/adequate.

ISYS40061: Service-Oriented Cloud Computing

Software Applications Integration using Web Services

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IV. Feedback Opportunities

Formative (Whilst you’re working on the coursework)

You will be given the opportunity to receive informal verbal feedback from your lab tutor

regarding your coursework development during the practical sessions.

Summative (After you’ve submitted the coursework)

You tutor will give you general feedback during the program demonstrations. You will

receive specific feedback regarding your coursework submission together with your awarded

mark when it is returned to you.