| RE: [birt-report-engine-dev] Pass Java object to BIRT Viewer |
I am working on integrating birt reporting framework with
webwork based web
application. I am trying to solve following integration
scenario and got it
working as mentioned below:
Use case
scenario
-------------------
1. There is a search screen that has many
search parameters as input text
fields
2. The submitted request (HTTP
POST) is handled by an action class and
finally the result is made available
in the form of a collection (as an
attribute of action class)
3. Now I
want this collection result to feed to birt reporting
framework
Solution
--------
1. Action class puts the collection
object into session (say with attribute
"javaBean")
2. Now it forwards the
request to Birt viewer (i.e. viewerServlet) by
appending report name
(.rptdesign file). The reason we put collection data
in session and not in
request is because: BIRt viewer will send AJAX based
request to fetch
report data and with request we loose this data.
3. Within the report
design file, I have added following event handler code
associated with
dataset
beforeOpen: dataCollection
=
reportContext.getHttpservletRequest().getSession().getAttribute("javaBean");
fetch:
here I can traverse the dataCollection
This solution works but doesn't
work out well since we are using session to
share data. Additionally this
data cannot be removed from session (at
afterClose event) because one may
want to perform column sorting.
Is there a better way to solve this
problem ? Any pointers/code sample will
be of great help.
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