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Change DataObject at the runtime

bcmp

Much appreciated, if somebody share the ways to change the data object at the run time in the report. Based on the user, I need to change the data object as a data source.

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Comments

Clement Wong

In the beforeFactory event of your report design, you can change the Data Object location and file name. Here's an example:
<pre class="_prettyXprint _lang-">
importPackage( Packages.org.eclipse.birt.data.engine.api );

var myconfig = reportContext.getReportRunnable().getReportEngine().getConfig();
var de = DataEngine.newDataEngine( myconfig, null );
var dsrc = reportContext.getDesignHandle().findDataSource("Classic Models Data Source");

//var logger = java.util.logging.Logger.getLogger("birt.report.logger");
//logger.warning (dsrc.getDataMartURL());

//Example of setting
//dsrc.setDataMartURL('Data Objects/Classic Models');

var serverContext = reportContext.getAppContext().get("ServerContext");

// check to see if it's run on the server (BIRT Designer Pro or iHub)
//
if(serverContext.getVolumeName() != null) {
var theUsername = reportContext.getAppContext().get("ServerUserName");
dsrc.setDataMartURL("Data Objects/" + theUsername);
}

//logger.warning (dsrc.getDataMartURL());
</pre>

bcmp

Report prints changed data object in the console but visualisation still uses the old data object. Attaching the sample for your observation.

Clement Wong

There's a defect here, and it's not working as expected. Please open a case with Support and send them the same files in the post above so that they can log a ticket. You can ask if they can provide a fix for this in an upcoming release.
 
Meanwhile, to workaround this issue, you'll need to specify an *invalid* Data Object file path or name. It seems that only when the Data Source is not a valid path or name that the datamartURL can be changed.
 
To do this, go into the XML Source of the .rptdesign, find your Data Source definition and modify the value of the datamartURL by changing the path to an non-existent one.
<pre class="_prettyXprint _lang-">
<property name="datamartURL">Data Objects/xxxDataObjectUSxxx</property>
</pre>
Then beforeOpen code will work.
 
 
Please note that the other method of changing the datamartURL in the beforeOpen event of the data source doesn't appear to be working either. There is no workaround for it. I've filed a defect ticket for this.
<pre class="_prettyXprint">
this.setExtensionProperty("datamartURL", "path/to/file);</pre>

Iloprtiz

As a gift we gave everyone 30 days or so at the start of the year to change their display name but it is not something we normally do.