How to set a datasource for a BIRT report programmatically?

Question

I have a BIRT report which connects to our test database. In the productive environment I would like to supply a datasource which is provided by the container through jndi.

Answer 1

I like Adams approach. Here's how we do it:

    /*
 * Change the data sources in the .rptdesign
 */
void changeDataSource(ElementFactory designFactory,
        ReportDesignHandle designHandle, String userConnect)
        throws SemanticException {

    SlotHandle datasources = designHandle.getDataSources();
    SlotIterator iter = (SlotIterator) datasources.iterator();
    while (iter.hasNext()) {
        DesignElementHandle dsHandle = (DesignElementHandle) iter.next();
        if (dsHandle instanceof OdaDataSourceHandle && dsHandle.getName().equals("lisa")) {
            log.debug("changeDataSource: Changing datasource "
                    + dsHandle.getName() + " new url=" + getLisaDbUrl());
            dsHandle.setProperty("odaDriverClass",
                    "oracle.jdbc.driver.OracleDriver");
            dsHandle.setProperty("odaURL", getLisaDbUrl());
            dsHandle.setProperty("odaUser", getLisaUser());
            dsHandle.setProperty("odaPassword", getLisaPassword());
        } else {
            log.debug("changeDataSource: Ignoring DS " + dsHandle.getName());
        }
    }
}

Here, "lisa" ist he name of the datasource we would like to change at runtime. The get... function return the values needed at "production" run time.