Bug 165188 logging per report
Setting up a dedicated (birt) report server, which serves all our web apps, leads to a logging desaster. Birtegine logs all messages to one file. There's no info which rptdesign caused the logmessage or who (e.g. user) caused the logmessage. Retrieving who/which rpt caused some logmessage is not possible! There are two possible solutions: (a) prefixing each logmessage with a userdefineable message (task.setLogprefix("myprefix")) (b) set an outputstream for each task (task.setLoggingOutputStream(outputstream)) to split the huge logfile to many small pieces.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/ReportEngine.java
IReportRunnable reportRunnable )
	{
		logger.log( Level.FINE,
				"ReportEngine.createGetParameterDefinitionTask: reportRunnable={0} ", reportRunnable );
		return helper.createGetParameterDefinitionTask( reportRunnable );
	}
	/**
	 * returns all supported output formats through BIRT engine emitter
	 * extensions
	 * 
	 * @return all supported output formats through BIRT engine emitter
	 *         extensions
	 */
	public String[] getSupportedFormats( )
	{
		return helper.getSupportedFormats( );
	}
	
	/**
	 * Return all the emitter information which BIRT Engine can load.
	 * 
	 * @return the emitter information
	 */
	public EmitterInfo[] getEmitterInfo( )
	{
		return helper.getEmitterInfo( );
	}
	/**
	 * the MIME type for the specific formatted supported by the extension.
	 *