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
{
					log
							.log(
									Level.WARNING,
									"Map entry {0} is invalid and ignored, because its key is a not string.",  
									entry.getKey( ).toString( ) );
				}
			}
		}
		if ( logStr != null )
			log.log( Level.FINE, "EngineTask.setAppContext: context={0}",
					logStr );
	}
	/**
	 * returns the object that encapsulates the context for running the task
	 * 
	 * @return Returns the context.
	 */
	public Map getAppContext( )
	{
		return executionContext.getAppContext( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.api2.IEngineTask#getEngine()
	 */
	public IReportEngine getEngine( )
	{
		return engine;