Use these commands in wsadmin to define the inheritance of topic roles by child topics within a topic hierarchy.
$AdminTask setInheritSenderForTopic
{-bus busName
-topicSpace topicSpaceName
-topic topicName
-inherit <true|false>}
$AdminTask setInheritReceiverForTopic
{-bus busName
-topicSpace topicSpaceName
-topic topicName
-inherit <true|false>}