MEP confusion / Providers / Consumers

[ma...@uk.bnpparibas.com]

hi alll,
 i am going thru docs for MEP here 
http://servicemix.apache.org/5-jbi.html#5.JBI-ServiceinvocationandMEP
but  i am still a little confused./...

here's my plan for my application

BC1(listens to MQ) which calls SE1 which calls SE2

messages are in one direction only, but i'd like to provide some fault 
tolerance....  therefore
i was wondering of using  Robust-In-Only as an interaction between 
components....

However, i m puzzled about roles of consumer/producers....

as far as my undestanding goes,:

BC1 looks like  a consumer, as it consumes messages from MQ
SE1 would be  a provider, as BC1 requires his services. 
But then, SE2 is a provider too as SE1 requires his services.....

is my understanding correct?

thanks and regards
        marco



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