Bug 182680 Use feature of new Aggregation framework of Data Engine.
DataEngine will implement new aggregation framework in 2.2.0RC0. After the implementation is finished Engine should go ahead to use new column bindings in definition of map/highlight.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/LogUtil.java
{
			Map publicProperties = dataSource.getPublicProperties( );
			String logMsg = " PulicProperties : ";
			Iterator iterator = publicProperties.keySet( ).iterator( );
			while ( iterator.hasNext( ) )
			{
				String propName = (String) iterator.next( );
				
				String lcPropName = propName.toLowerCase( );
				String propVal;
				if ( lcPropName.indexOf( "password" ) >= 0
						|| lcPropName.indexOf( "pwd" ) >= 0 )
					propVal = "***";
				else
					propVal = publicProperties.get( propName ).toString( );
				logMsg += propName + "=" + propVal + ";";
			}
			stringBuffer.append( logMsg + "\r\n" );
		}
		stringBuffer.append( ")" );
		return stringBuffer.toString();
	}
	private static boolean isEmpty( Object source )
	{
		if ( source == null || "".equals( toString( source ) ) )
			return true;
		else
			return false;
	}
}