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
}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.api.IEngineTask#getParameterValue(java.lang.String)
	 */
	public Object getParameterValue( String name )
	{
		Object parameter = inputValues.get( name );
		if ( parameter == null )
		{
			return null;
		}
		assert parameter instanceof ParameterAttribute;
		return ( (ParameterAttribute) parameter ).getValue( );
	}
	public void setParameter( String name, Object value, String displayText )
	{
		parameterChanged = true;
		inputValues.put( name, new ParameterAttribute( value, displayText ) );
	}
	public String getParameterDisplayText( String name )
	{
		Object parameter = inputValues.get( name );
		if ( parameter != null )
		{
			assert parameter instanceof ParameterAttribute;
			return ( (ParameterAttribute) parameter ).getDisplayText( );
		}
		return null;