Multiple channel's message comes into single channel

Multiple channel's message comes into single channel

i am fresher of Spring Integration, i am confuing one question which i
have multiple channels but now i want to assemble messages from those
channel into single channel, how to implement it ? my senario is that i
have lots of businees modues and each module will corresponding to one
channel, those channels will receive the request then assemble the message
into one single channel , then output to the jms server:
is below code possible ?
<channel id='a'/> <bridge input-channel='a' out-channel='assembled'/>
<channel id='b'/> <bridge input-channel='b' out-channel='assembled'/>
<channel id='b'/> <bridge input-channel='c' out-channel='assembled'/>
<channel id='c'/> <bridge input-channel='d' out-channel='assembled'/>
<channel id='assembled'/>
<!-- the router will desicde which jms gateway to be sent -->
<router input-channel='assembled' >
<channel id='to_jms1'/>
<channel id='to_jms2'/>
<jms-outbound-gateway id='jms1' channel='to_jms1'/>
<jms-outbound-gateway id='jms2' channel='to_jms2'/>