please find attached some code i want to contribute. It an implementation of the ExpressionEvaluator interface which evaluates an EndpointURI. Its currently part of the ldap transport project, but i think its not the right place for it. It does: a) ${endpointuri:endpointname.params:yyy} is evaluated to getParams().get("yyy") on the EndpointURI of the registered endpoint with the name 'endpointname'. b) ${endpointuri:endpointname.userParams:yyy} is evaluated to getUserParams().get("yyy") on the EndpointURI of the registered endpoint with the name 'endpointname'. c) ${endpointuri:endpointname.xxx} is evaluated to getXxx() on the EndpointURI of the registered endpoint with the name 'endpointname'. Example for endpoint uri: "ldap://ldap.out/payload.cn?cnprop=testprop" ${endpointuri:endpointname.host} -> "ldap.out" ${endpointuri:endpointname.params:cnprop} -> "testprop"