Slide2:
Platform Overview The DILIGENT architecture is distributed across a stack of logical layers built on top of EGEE middleware to achieve modularity and independence from hosting system. Service layers Digital Library Creation and Management EGEE in DILIGENT is the next generation middleware for grid computing, born from the collaborative efforts of several academic and industrial research centres funded by the EU as part of the EGEE Project. gLite provides a framework for building grid applications tapping into the power of distributed computing and storage resources across the Internet.
Slide3:
A Digital Library Infrastructure on Grid Enabled Technology Architecture, Services, Applications and Middleware in DILIGENT Created by G.Kakaletris @ di.UoA (2006) Process Management Content and Metadata Management Indexing and Searching Application Specific Services The Globus Toolkit is an open source software toolkit used for building Grid systems and applications. It is being developed by the Globus Alliance and several other parties all over the world.
The toolkit includes software for security, information infrastructure, resource management, data management, communication, fault detection, and portability. It is packaged as a set of components that can be used either independently or together to develop applications. Globus Toolkit in DILIGENT
Slide4:
Features @ a glance DILIGENT is partially funded by the European Union under the Sixth Framework Program, Information Society Technologies priority (2002-2006)
The European Union is established in accordance with the Treaty on European Union (Maastricht). There are currently 25 Member States of the Union. It is based on the European Communities and the member states cooperation in the fields of Common Foreign and Security Policy and Justice and Home Affairs. The five main institutions of the European Union are the European Parliament, the Council of Ministers, the European Commission, the Court of Justice and the Court of Auditors. (http://europa.eu.int/) Disclaimer: This publication has been produced with the assistance of the European Union. The contents of this publication is the sole responsibility of DILIGENT consortium and can in no way be taken to reflect the views of the European Union. Material presented in here by no means binds the DILIGENT consortium to future technological decisions and products.
Images sources: ARTE archives, EU and ESA public image galleries. Styling: UoA, ENG. Production: UoA.
** Work teams of marked partners moved to other organisations inside the project. On-demand Digital Library creation, hosting and management;
Security integration through virtual organisation and virtual community support;
Content security handling (access and watermarking policies);
Semantic content management over a gLite superimposed storage management layer;
Metadata management and indexing;
Annotation management and visualisation;
Dynamic Digital Library resources reallocation;
Shared resource usage optimisation;
Complex process visual design, verification, optimisation and execution;
Advanced feature extraction through pluggable components and services;
Text, image, sound, video and multimedia content processing;
Information visualisation;
Information retrieval out of structured, semi-structured and unstructured data;
Support for application-specific extensions;
Provision of pluggable management and access web components;
Service Oriented Architecture paradigm based design;
Built on WSRF compliant service elements;
EGEE gLite middleware compliancy;
Implementation level homogeneity. European Research Consortium for Informatics and Mathematics – France
Istituto di Scienza e Tecnologie dell'Informazione "A. Faedo“– Italy
National & Kapodistrian University of Athens – Greece
Swiss Federal Institute of Technology, Zurich** – Switzerland
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. – Germany
University of Health Informatics and Technology Tyrol ** – Austria
University of Basel - Switzerland
European Organization for Nuclear Research – Switzerland
Engineering Ingegneria Informatica SpA Rome – Italy
University of Strathclyde – United Kingdom
Fast Search & Transfer ASA – Norway
European Space Agency – Italy
Scuola Normale Superiore – Italy
4D SOFT Software Development Ltd. – Hungary
RAI Radio Televisione Italiana – Italy @ http://www.diligentproject.org/
mailto:info@diligentproject.org
Contact Person:
Donatella Castelli
donatella.castelli@isti.cnr.it
Istituto di Scienza e Tecnologie dell'Informazione "A. Faedo" - CNR
Via Moruzzi, 1 , 56124, Pisa - Italy
Tel: +39 050 3152902
Fax: +39 050 3153464 DILIGENT design and implementation is built around the vision to provide a robust stable system capable of supporting production level Digital Libraries.
In order to make this possible procedures followed by industrial / commercial software development lines have been adopted and internal homogeneity has become a primary rule since the beginning of project, leading to:
full adoption of the Service Oriented Architecture as dictated by the OGSA paradigm;
adoption of JAVA as the sole development language and of WS-Core as the WSRF enabling toolkit;
application of common design patterns for families of problems;
development of horizontal mechanisms to support common tasks throughout the system;
provision of common terminology;
compliance with commonly accepted coding and documentation guidelines;
consistency in reuse of technologies and external components.
Despite the internal homogeneity, the Service Oriented nature of the system allows its full or partial reuse and extensibility by a diversity of heterogeneous systems that fit the industrial interfacing standards adopted by DILIGENT. The framework