A Service Component Model and Implementation for Institutional Repositories - Advanced Design Approaches to Emerging Software Systems - page 79

Figure 7. Process to create an Institutional Repository

SaaS service to allow users to input the metadata
and generate a Web application for them auto-
matically to manage these kinds of digital re-
sources.
This tool has already been used in the Digital
Library on the History of Water Conservancy
in China of Tsinghua University Library, which
is used to manage the topics, images and some
other digital resources of water conservancy. We
only generate the codes for basic management,
because the front-end interfaces are too various,
which is difficult to create templates for. For the
digital library, it requires a customized interface.
Tsinghua University Library provides the Web
interfaces in HTML format; and we integrate them
into the digital library.

is crucial because the system will be most useful
at institutions with relatively weak technical sup-
port and urgent requirements. Finally, DRMS2.0
is free of charge under an academic and research
use license and the technical details of installation
are handled easily.

8. CONCLUSION AND
FUTURE WORK

This paper presents a new middleware based on
cloud services to set up an Institutional Repository.
Clouds are defined to be a large pool of easily us-
able and accessible virtualized resources. These
resources can be dynamically re-configured to
adjust to a variable load, allowing also for optimum
resource utilization. It is not economic to set up
an Institutional Repository for an organization
itself. Based on SCA, we designed a model for
managing digital resources named DRSC model,
which regards a digital resource as a composite of
five atomic service components, i.e. ID, metadata,
content, annotation and log service component.
These components provide two kinds of services:
Web service and Mashup service. In order to sup-
port the DRSC model, we design and implement
five corresponding atomic clouds. These clouds

7. REQUIREMENTS AND
INSTALLATION

In order to function, the clouds and assistant tool
in DRMS2.0 require Java Server Tomcat, MySQL
database, BerkelyDB and Mule ESB. The program
is deployed with an Apache Ant Script that runs
cross-platforms to simplify the process of instal-
lation. DRMS2.0 can be easily configured and
put into production very fast. This characteristic