2. Building an Integrable XBRL Portal Daniel Hamm German Central Bank Daniel.Hamm@bundesbank.de

3. Background
Member of COREP project team and developer of the COREP taxonomies.
European Supervisors need XBRL application to actually use the COREP taxonomies.
Development of XBRL Supervision, an open and extensible XBRL Platform to meet the needs of Supervisors.
German Central Bank is using relevant parts of this application.

4. The underlying business process
receive data in
Excel/XML/CSV/…
receive XBRL
instance document
XBRL receiving
(= instance
creation)
transform to
XBRL instance
document
reject receipt
validate XBRL
instance document
XBRL validation
instance valid? no
yes
map XBRL to
XML or other format
store data in
existing relational
database
map multidimensional
Data to Data
Warehouse
interface to existing databases / data warehouses / CMS / …
XBRL processing
traditional processing

5. General Framework Structure
user code
user
module
user
module
user module
Framework
core
module
core
module
core module
interface
interface

6. Used Technologies J2EE-based Web Application
Uses standardised J2EE technology
Java Servlets
Java Server Pages (JSPs)
Java Beans (reusable Java components)
Uses standardised Web Technology
(X)HTML
Cascading Stylesheets (CSS)
JavaScript
Uses Open Java Frameworks
Struts
Tiles
Uses XBRLCore: Open XBRL Java Library

7. Architecture of the Application
All components are open source libraries.
XBRL Supervision
XBRL
functionality
Struts
Web
Application
Framework
Xalan
XSLT
Engine
Xerces
XML
Parser
Jakarta
Commons
reusable
components
XBRLCore
XBRL library
JDOM
XML library
Java 2 Enterprise Edition

8. Use Cases Show XBRL Taxonomies Show XBRL Instances
Transform XBRL taxonomies to human readable output.
“Validate” content of taxonomies.
Show XBRL Instances
Visualise instances.
Check content of instances.
Create XBRL Instances
Create instances for testing purposes.
Enable possibility to submit instances.
Make use of XBRL transparent.
Load Content of XBRL Instances into a Database
Make data of XBRL instances available to other applications.
Create customised reports of the submitted content.

9. Use Case: Show Taxonomies (core module)
can be replaced
by user
implementation
xbrlsv-config.xml
Process Flow
form
already
built?
Java
Servlet no
Taxonomy
Manager
getDTS()
show
form
HTTP
request
XBRL
Supervision
yes
show
trans-
formed
taxonomy
Converter
Class
apply stylesheet
xbrlsv-config.xml
can be replaced
by user
implementation

10. Use Case: Show Taxonomies (custom module)
can be replaced
by user
implementation
xbrlsv-config.xml
Process Flow
form
already
built?
Java
Servlet no
Taxonomy
Manager
getDTS()
show
form
HTTP
request
XBRL
Supervision
yes
forward HTTP request
Custom
Resource
Jave Servlet
Java Server Page …
xbrlsv-config.xml
use components
and libraries

11. Use Case: Show Instances (core module)
Process flow similar to “Show Taxonomy” use case.
Demonstration.

12. Use Case: Create Instance
Same principle: XBRL Supervision is shipped with a core module to create instances.
Custom modules can be developed and published in xbrlsv-config.xml.
Core module creates an HTML based form and builds an instance based upon the user data.
Transparent, easy-to-use solution to submit XBRL data.
Will be used in the German Central Bank to receive solvency reports.
Demonstration.

13. Use Case: Load Instance into a Database
XBRL
Supervision
object layer
Default persistent mechanism of XBRL Supervision is Hibernate.
Open Source OR-mapping framework for Java.
Can be configured to match the structure of the database.
Can be replaced by own persistent mechanisms.
object
object
ORM layer
data layer
(database)

14. Thank you for your attention
See for more details and get the application there.