throws TopicExpressionResolutionException
{
TopicSpace topicSpace = topicSpaceSet.getTopicSpace( topicPath.getNamespaceURI( ) );
if ( topicSpace == null )
{
throw new TopicExpressionResolutionException( "Topic path '" + topicPath.getPrefix( ) + ":"
+ topicPath.getLocalPart( )
+ "' references an unknown TopicSpace with namespace URI '"
+ topicPath.getNamespaceURI( ) + "'." );
}