Wireless environment for Wireless environment for data access on a serverdata access on a server

Auteur:Auteur: Vincent ClaesVincent ClaesPromotor (Vigo):Promotor (Vigo): Eng. Luís M. Álvarez SabucedoEng. Luís M. Álvarez SabucedoPromotor (Vigo):Promotor (Vigo): Ph.D. Luís E. Anido RifónPh.D. Luís E. Anido RifónPromotor (HL):Promotor (HL): Dr. Ing.Dr. Ing. Jan BoutsenJan BoutsenAcademiejaar:Academiejaar: 2003 - 20042003 - 2004

UNIVERSIDADE DE VIGO

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PresentatiePresentatie

OverzichtOverzicht

Gebruikte technologieënGebruikte technologieën

Ontwikkeld projectOntwikkeld project

ConclusiesConclusies

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Universidade de VigoUniversidade de Vigo

44

OverzichtOverzicht

55

Gebruikte technologieënGebruikte technologieën

Wireless devicesWireless devices

HTTP connectionHTTP connection

Database ServerDatabase Server

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Wireless devicesWireless devices

HTTP connectionHTTP connection

Database ServerDatabase Server

Gebruikte technologieënGebruikte technologieën

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Wireless devicesWireless devices

extremely limited memoryextremely limited memory

Small screen sizesSmall screen sizes

Alternative input methodsAlternative input methods

Slow processorsSlow processors

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Java technologyJava technology

Enterprise Edition (J2EE)Enterprise Edition (J2EE)

ServersServers Standard Edition (J2SE)Standard Edition (J2SE)

DesktopsDesktops Micro Edition (J2ME)Micro Edition (J2ME)

Small devicesSmall devices

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J2MEJ2ME

ConfigurationsConfigurations

Hardware capabilities of mobile devicesHardware capabilities of mobile devices

ProfilesProfiles

Define the full set of API classesDefine the full set of API classes

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J2ME - ConfigurationsJ2ME - Configurations

Connected Device Configuration (CDC)Connected Device Configuration (CDC) 2MB of memory2MB of memory

32-bit microprocessor or controlller32-bit microprocessor or controlller

an available network connection, preferably high bandwidthan available network connection, preferably high bandwidth

Connected Limited Device Configuration (CLDC)Connected Limited Device Configuration (CLDC)Minimum of 160KB total memoryMinimum of 160KB total memory

Minimum 16-bit 25 MHz-processorMinimum 16-bit 25 MHz-processor

Limited user-interface facilitiesLimited user-interface facilities

No (or intermittent) low-bandwidth network connectionNo (or intermittent) low-bandwidth network connection

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J2ME – Profiles (CLDC)J2ME – Profiles (CLDC)

Mobile Information Device Profile (MIDP)Mobile Information Device Profile (MIDP)

today’s mobile devicestoday’s mobile devices

limited subset of J2SE’s feature setlimited subset of J2SE’s feature set

custom interface and input/output classescustom interface and input/output classes

Personal Digital Assistant Profile (PDAP)Personal Digital Assistant Profile (PDAP)

a superset of the MIDPa superset of the MIDP

PIM,…PIM,…

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J2ME – MIDPJ2ME – MIDP

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Programs usedPrograms used

JCreatorJCreator

Wireless Toolkit 2.0Wireless Toolkit 2.0

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Gebruikte technologieënGebruikte technologieën

Wireless devicesWireless devices

HTTP connectionHTTP connection

Database ServerDatabase Server

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HTTPHTTP

Just an interface on the clientJust an interface on the client

a kind of ‘browser’a kind of ‘browser’

Data is on the serverData is on the server

Connection is neededConnection is needed

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HTTPHTTP

HyperText Transfer ProtocolHyperText Transfer Protocol

HTTP transactionHTTP transaction request send by the client to the serverrequest send by the client to the server

response returned from the server to the response returned from the server to the clientclient

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XMLXML

eXtensible Markup Language is a meta-eXtensible Markup Language is a meta-language that describes the content of the language that describes the content of the document (self describing data)document (self describing data)

XML does not specify the tag set or grammar of XML does not specify the tag set or grammar of the languagethe language

XML is a cross-platform ,software and hardware XML is a cross-platform ,software and hardware independent tool for transmitting informationindependent tool for transmitting information

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XMLXML

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XML ParsingXML Parsing

Reading the data out of the tagsReading the data out of the tags

kXMLkXML

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Gebruikte technologieënGebruikte technologieën

Wireless devicesWireless devices

HTTP connectionHTTP connection

Database ServerDatabase Server

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Database ServerDatabase Server

Information was stored in a SQL Information was stored in a SQL databasedatabase

SQL= Structured Query LanguageSQL= Structured Query Language

ASP (Active Server Pages)ASP (Active Server Pages)Used to generate the XML filesUsed to generate the XML files

aspx – VB.NETaspx – VB.NET

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Final overviewFinal overview

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Developed ProjectDeveloped Project

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ConclusionsConclusions

J2ME will be the dominant platform for J2ME will be the dominant platform for mobile devicesmobile devices

450 million handsets (2007)450 million handsets (2007)

Data processing on the server sideData processing on the server side

Limitations of the devicesLimitations of the devices

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ResourcesResources

IBM developerworksIBM developerworks

http://www.ibm.com/developerworks/http://www.ibm.com/developerworks/ Nokia ForumNokia Forum

http://www.forum.nokia.comhttp://www.forum.nokia.com Sun WebsiteSun Website

http://www.sun.comhttp://www.sun.com

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Bedankt voor uw aandacht.Bedankt voor uw aandacht.

Vragen ?Vragen ?

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