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Software Development Trends 2010-2011

Software Development Trends 2010-2011



Presentation as a guest at City College of upcoming Software Development trends in 2010-2011 at 24/01/2010.

Presentation as a guest at City College of upcoming Software Development trends in 2010-2011 at 24/01/2010.



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    Software Development Trends 2010-2011 Software Development Trends 2010-2011 Presentation Transcript

    • Contact Details
        • Charalampos Arapidis
        • [email_address]
        • OTS S.A. Employee
        • Senior Software Developer
    • Past Trends that failed to pick up
        • Java FX – epic fail
        • Sun’s software platform for creating RIAs
        • OOXML – global fail
        • Office Open XML file format
    • Trends in 2010
        • Agile Project Management + OSS
        • eGif eGovernment Interoperability Framework
        • Web Applications – HTML 5
    • Agile and OSS
        • Is Agile a trend?
        • Open Source Software: maturity and stability
        • Agile principles, benefits, adoption rate increase
        • Flexible OSS enables better agile implementation
    • Agile Project Management
    • Open Source Software
    • Characteristics of the Agile Methodology
        • Based on iterative development
        • Emphasizes on building releasable software in short time periods
        • The project undergoes frequent inspection and adaptation
        • Customer collaboration – requirements’ changes are expected and welcomed.
        • Continuous delivery of working software
        • Constant communication between members of a self-organized team
        • Regular adaptation to changing circumstances
    • Agile Manifesto The Four Values of Agile
        • Individuals and interactions over processes and tools
        • Working software over comprehensive documentation
        • Customer collaboration over contract negotiation
        • Responding to change over following a plan
    • The Agile Process
    • Why Agile
        • Delivers Business value early – stakeholders are happy
        • Reactive and adaptive to changes in requirements
        • Responsiveness to changing needs and understanding
        • Predictable reliable results
        • Greater communication and interaction among team members improves skill building
        • Mature and open source Project Management Tools
    • 6 Dimensions of Economic & Organizational ROI ( these SHOULD be Measured )
        • Improved Efficiency due to optimized process
        • Higher Productivity due to improved morale
        • Cost Control due to Superior On-Time Performance
        • Higher Quality due to improved Defect Removal
        • Benefit Improvement due to Integral Customer Feedback
        • Benefit Acceleration due to Incremental Delivery
    • Conclusion
        • Agile: a misunderstood methodology
        • Companies ready to give up Command-and-Control for Agile teams
        • Flexible OSS makes easier to follow Agile practices
    • eG overnment I nteroperability F ramework
        • Today’s Information Age offers the possibility of communication across borders.
        • The need to standardise and allow for interoperability is growing.
        • IDABC stands for  I nteroperable  D elivery of European eGovernment Services to public  Administrations , Businesses  and  Citizens .
        • The European Interoperability Framework supports the European Union's strategy of providing user-centred eGovernment services by facilitating, at a pan-European level, the interoperability of services and systems 
    • eG overnment I nteroperability F ramework
        • What is eGif
        • Basic principles and standards of the framework
        • Modeling government’s infrastructure
        • O.T.S. Case Study
    • eGif A common platform for developing services
      • An effort to standardize the way e-Services are implemented in order to enable interoperability and communication.
      • Semantic representation of the Government’s Authorities at service and data level.
      • Basic Principles
        • Reusablity
        • Flexibility
        • Standards
        • Security
    • Standards of the eGif
        • XML Signature XML-Dsig & Encryption
        • Public Key Infrastructure ( PKI )
        • BPEL
        • UML 2.0
        • XSD XML XSLT – W3C
        • WSDL + SOAP
    • Modeling the real world
    • Modeling produces Common Language
        • Each European state registers by priority physical services and forms exposed to the Citizen.
      • The real world interaction between the Citizen and the Government’s Organizations translates to :
        • Business Objects ( Business Information Entities )
        • Activity Diagrams
        • Data Models ( xsd schemas )
        • Metadata ( approved Data Types and Codelists )
    • How the components connect and relate to the xsd and xml schemas.
    • Core Components & Business Information Entities example
    • The Citizen Entity
    • Qualified Datatype extension
    • Qualified Datatype base
    • Marital status Codelist <xs:simpleType name=&quot;MaritalConditionCodeContentType&quot;> <xs:restriction base=&quot;xs:token&quot;> <xs:enumeration value=&quot;1&quot;> <xs:annotation> <xs:documentation xml:lang=&quot;eng&quot;> <ccts:Name>Single</ccts:Name> </xs:documentation> <xs:documentation xml:lang=&quot;ell&quot;> <ccts:Name>Άγαμος, Ανύπανδρος</ccts:Name> </xs:documentation> </xs:annotation> </xs:enumeration> <xs:enumeration value=&quot;2&quot;> <xs:annotation> <xs:documentation xml:lang=&quot;eng&quot;> <ccts:Name>Married</ccts:Name> </xs:documentation> <xs:documentation xml:lang=&quot;ell&quot;> <ccts:Name>Έγγαμος, Παντρεμένος</ccts:Name> </xs:documentation> </xs:annotation> </xs:enumeration> .. </xs:simpleType>
    • Real use case: The Coverletter The cover letter communicated between two (or more) public authorities regarding an issue of common interest or that mutually affects them.
    • Coverletter : root of the xsd schema
    • Coverletter : xsd definitions
    • The Services The services communicate using SOAP messages. The XML data of the messages validate against the xsd schemas to ensure data integrity and validity.
    • Conclusion
        • eGif – a complete global framework
        • A Paradigm for reusability and standardization
        • Not for eGovernment services only
        • Provides a solid ground for any project
    • HTML 5.0
        • Aim of the new spec. Is it necessary?
        • What happened in 2009?
        • Participants and Supporters
        • Features and Components
    • What happened in 2009
        • Google gears up for HTML 5
        • Mozilla Firefox 3.5 has been released with HTML 5 support
        • Microsoft joins HTML 5 standard
    • HTML 5.0 the proposed next standard for HTML 4.01, XHTML 1.0
      • HTML5 aims to
        • reduce the need for proprietary plug-in-based rich Internet application (RIA) technologies such as Adobe Flash , Microsoft Silverlight , and Sun JavaFX .
    • WHATWG : Web Hypertext Application Technology Working Group
        • The specification is an ongoing work
        • The specification’s draft became final as of October 2009
        • Incorporates Web Forms 2.0 spec
        • Main editors of the spec: Google & Apple
    • How it all started
        • Need for complex and rich interfaces
        • Presentational elements deprecated
        • Emphasis on the importance of DOM Scripting in Web Behavior
        • Introduction of new elements – semantic replacements for generic and meaningless tags
    • Some of the new features
        • Offline Storage – cookies at a whole new level
        • Document – region editing
        • Management of the browser history – the Back button was always a big problem.
        • Elements: drag’n’drop, calendar, progress, section, header etc
    • Google’s VP states: &quot;we're betting big on HTML 5.&quot;
    • Current Browser Support implemented or emulated
    • Advanced features
        • Application caches: the developer can declare which resources the browser to cache – better control over caching, less bandwidth “wasted” – ability to “save” application locally and run offline.
        • Client-side Javascript database support : easy to build offline apps 10mb local storage
        • Web Workers: Background Threading mechanisms available to the browser – 10x faster execution.
    • Features
        • Real apps in the browser . APIs for in-browser editing, drag and drop, back button “waypoints,” and other graphical user interface abilities – calendar, progressbar etc.
        • Content presentation tags will be phased out , we have CSS for this
        • Rich animations without plug-ins. The canvas element gives the browser the ability to draw vector graphics . This means configurable, automatic graphs and illustrations right in the browser without Flash or Silverlight. Some support for canvas is already in all the latest browsers except for IE
    • Features
        • Localized databases . This feature, when implemented, automatically embeds a local SQL database websites can read and write to, speeding up interactive searching , cacheing and indexing functions, or for offline use of web apps that rely on data requests.
        • A new, sensible tagging strategy. Instead of bundling all multimedia into object or embed tags, video goes in video tags . Audio goes in audio tags, and so on.
    • The canvas element it is not an image, it is a vector
    • Progress element <progress value=&quot;250&quot;max=&quot;1000&quot;>
        • Creates an autocomplete input field!
      • <input type=&quot;text&quot; name=&quot;favCharacter&quot; list=&quot;characters&quot;>
      • <datalist id=&quot;characters&quot;>
      • <option value=&quot;Homer Simpson&quot;>
      • <option value=&quot;Bart&quot;>
      • <option value=&quot;Fred Flinstone&quot;>
      • </datalist>
      • </input>
    • Datagrid
        • In a datagrid, data is structured as a set of rows representing a tree, each row being split into a number of columns.
        • Enables row selection and selection model e.g. multiple=&quot;multiple&quot; means user can select multiple rows
        • And supports all global HTML 5 attributes such as
        • contetneditable
        • contextmenu
        • draggable
        • etc..
    • Experimental Appliances
        • Youtube built entirely in HTML 5 – ( no flash )
        • Offline Gmail in mobile browser
    • HTML 5 : Good news for the developer
    • JSF – HTML
        • Date selector
        • Autocomplete input field
    • Date Selector
      • JSF
        • The component is not implemented
        • Extend UIInput
        • Create new tag and taghandler
        • Implement the renderer and the encode-decode methods – ( localization )
        • Inject and cache necessary javascript and css files – ( bandwidth )
        • Test test test
      • HTML
        • The component is built in the browser
        • UI is implemented by the browser following the spec
        • Automatic locale detection or
        • Retrieve from the offline storage
        • No bandwidth loss
    • Autocomplete input field
        • Autocomplete + much data = bad user experience
        • No need for arcane javascript and weird css,
        • It is the browser’s responsibility to create the UI
        • Suggestion values can be stored offline and observed
        • Reduce / nullify application server and DB hits
    • Conclusion
        • Designed with Web Apps in mind
        • Backed up by major software companies
        • Not another abstract W3C spec
        • Holy Grail of Web Authoring?
    • Other trends
        • jQuery: write less do more
        • JSF 2: ajax enabled, components composition
        • J2EE6: Bean Validation, CDI, Servlet 3
    • EOF
        • More companies adopt Agile, use OSS to apply best practices
        • Promotion to establish the concept of interoperable systems at pan-European level
        • HTML 5 spec targets Web Applications with user experience and ease of development being top priorities