this file captures some of the ideas used in the WSDL-like parameter definition files, but as yet is not used for validation the baseparameter definition is mimiced by the contents of a part element in the wsdl important types are defined here that would have special significance.... Base Application Description The CEA type of the application - this allows the system to determine which CEC it should be talking to. The complete list of parameters that might occur in any of the apllication interfaces The list of interfaces that an application might have This has a type of ID because it is useful to be able to put some identity constraints on the parameter refs so that some schema checking can validate the configuration file. This is not compatible any more with the standard form of name reference ivo://authority/name - it might be that the best thing to do in future is to put the authorityid in a separate attribute description of an interface The list of input paramters for an interface a reference to a parameter The list of output parameters for an interface A desciption of the interface suitable for presentation in a UI A particular application interface reference to an application parameter. Used in the interface definitions. a value of 0 implies unbounded A generalised parameter - this is a substitution point The type of the underlying application - commandline, http-get etc application is commandline, wrapped by a CEC application is a http POST/GET application is implemented "internally" in the CEA application is an external web service - will be dealt with by a proxy. A list of applications list of applications This is a generic application definition that does not take in all of the specializations for web/commandline etc Extra description necessary for describing the case where CEA acts as proxy to underlying service A direct referrence to a url of the underlying service A query using the registry query language to reference one or more registered resources that provide the underlying http GET/POST service. Description of an HTTP Application This script can be used to map the input parameters to the parameters of the underlying service. This should not usually be necessary as the application defintion will usually be a one-to-one mapping. This script can be used to post process the result returned by the http application. e.g. to perform a 'screen-scrape' Description of an HTTP get or post service The URL for an http get or post service the http method to be used to send parameters to the service. http method type: get or post a snippet of code to massage the inputs and outputs Scripting language Description of WebService