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/EngineTask.java
*/
	public String getEmitterID( )
	{
		return this.emitterID;
	}
	public DataRequestSession getDataSession( )
	{
		return executionContext.getDataEngine( ).getDTESession( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.api2.IEngineTask#addScriptableJavaObject(java.lang.String,
	 *      java.lang.Object)
	 */
	public void addScriptableJavaObject( String jsName, Object obj )
	{
		executionContext.registerBean( jsName, obj );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.api2.IEngineTask#getID()
	 */
	public int getID( )
	{
		return taskID;
	}
	protected Object convertToType( Object value, String type )
	{