if ( provider == null ) return;
	protected void setIntrinsicProperty( String propName, Object value )	{		if ( EXTENSION_ID_PROP.equals( propName ) )		{			extensionID = (String) value;			if ( extensionID != null )			{				provider = ODAProviderFactory.getInstance( ).createODAProvider(						this, extensionID );				if ( !provider.isValidODADataSourceExtensionID( extensionID ) )					provider = new OdaDummyProvider( extensionID );			}			else				provider = null;		}		else		{			super.setIntrinsicProperty( propName, value );		}	}