Cognos Web Services
Business Intelligence
SOA
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SOA (Service Oriented Architecture)
The SOA approach involves seven key principles:
-- Coarse -grained
-- Platform neutral
-- Location transparent
-- Peer-to-peer
-- Loosely coupled
-- Interface-based
-- Open and Standard Based
SOA
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SOA is the foundation for the Cognos 8 BI platform
instead of the client-server approach or the web
services wrappers to provide a more effective
enterprise BI solution.
SOA is more efficient, reliable and agile compare
with the client-server approach and the wrapper
approach.
Cognos Web Services
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Services communicate using the BI Bus API.
For each service, there are two corresponding Java
interface definitions:
-- <service>_Service
-- <service>_Port
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Implementation and usage:
-- <service>_ServiceLocator: acquire the port
information for the associated service.
-- <service>Stub: to access the functionality provided by
the service.
Sample Code: Access and Read a Report
from Cognos Content Store
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To add jars from Cognos installation directory:
-- specify directory of jars in your CLASSPATH
-- IDE (Elipse): add jars to the project
Add Jars in Elipse IDE
Right click in the Package Explorer, select ‘Build Path’,
then ‘Configure Build Path’ to add the jar files if they are
not in there.
RunMultiQuery.java
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Java application retrieves multiple query definitions
from a report specification, execute the query and
print out the XML formatted report to the output or
write the output in a single file.
Take 1 argument:
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-- search path of the report (see slide 8)
Set parameter(s) required for this report:
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Value for the parameter
Name of the parameter
RunMultiQuery.java
Open the properties for the object, then click on View the search path, ID and URL
Copy the Search path and feed it to RunMultiQuery.java
RunMultiQuery.java
Output – xml formatted
report
Pass a Date Range – PassDateRange.java
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Use Cognos specially defined class –
BoundRangeParmValueItem for date ranges which
use one parameter takes one start date and one
end date as in Audit reports.
SaveReportAndExtractOutput.java
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Access a archived XML report in the content store
and read its content or save it to a local directory.
Take 3 Arguments:
-- search path of the report (see slide 8)
-- path of local directory if that is desired
-- name of the report