Calling Restful Services Dynamically - biztalk

Question

I have an existing orchestration which calls the services with the below configuration.
System.Diagnostics.EventLog.WriteEntry("ABC", Message_Datasheets(FILE.ReceivedFileName));
varNewSearchDataLoadURL = System.Configuration.ConfigurationManager.AppSettings["NewSearchDataLoadURL"];
varNewXmlMsg = new System.Xml.XmlDocument();
varNewXmlMsg.LoadXml(#"<path>" + Message_Datasheets(FILE.ReceivedFileName) + #"</path>");
Message_NewUnZip = varNewXmlMsg;
Message_NewUnZip(HTTP.RequestTimeout) = 3600;
Port_NewJaxMiceSearch_API(Microsoft.XLANGs.BaseTypes.Address) = varNewSearchDataLoadURL + "?path=" + Message_Datasheets(FILE.ReceivedFileName);
Port_NewJaxMiceSearch_API(Microsoft.XLANGs.BaseTypes.TransportType) = "HTTP"
Here NewSearchDataLoadURL holds the address of the webservice that needs to be called in the config file.And the path holds the received file name.So the called URI will be "http://new.abc.org/AbcSearchWebApi/api/search/loaddatafeed?path=\share01\BizTalk\data\out\20150723"
Now I have to change that to the Restful services which uses WebHttp Adapter. I am trying to follow the here
but I dont understand the BtsVariablePropertyMapping because I dont have schema that has the value to be promoted. How can I approach this.
Any help will be greatly appreciated.

Answer 1

So your goal is to call a Rest WebService using a dynamic port, in order to do this you need to
1 - Specifiy your type of operation
<BtsHttpUrlMapping>
<Operation Name=’MyRestGET’ Method=’GET’ Url=’/XXXX/{EmpId}’ />
</BtsHttpUrlMapping>
2 - Create and Map your variables :
"BtsVariablePropertyMapping" is a powerful BizTalk technique that enables you to define a custom variable in your url and map it to any context property using its name and namespace
So you must definitely have the property schema unless it's a BizTalk context property hence its schema is already present in BizTalk
3 - Init your dynamic port with the webservice url
In this step you assign your webservice url and transport type in your dynamic solicit response port
Microsoft.XLangs.BaseTypes.Adress = /XXXX/{EmpId}
Microsoft.XLangs.Basetypes.TransportType = "WCF-WebHTTP"
And you are good to go with this

Answer 2

The below code works, without using the BtsVariablePropertyMapping
System.Diagnostics.EventLog.WriteEntry("ABC", Message_Datasheets(FILE.ReceivedFileName));
varNewSearchDataLoadURL = System.Configuration.ConfigurationManager.AppSettings["NewSearchDataLoadURL"];
varNewXmlMsg = new System.Xml.XmlDocument();
varNewXmlMsg.LoadXml(#"<path>" + Message_Datasheets(FILE.ReceivedFileName) + #"</path>");
Message_NewUnZip = varNewXmlMsg;
Message_NewUnZip(WCF.HttpMethodAndUrl) = #"<BtsHttpUrlMapping><Operation Name = 'RESTGet' Method ='GET'/></BtsHttpUrlMapping>";
Port_NewSearch_API(Microsoft.XLANGs.BaseTypes.Address) = varNewSearchDataLoadURL + "?path=" + Message_Datasheets(FILE.ReceivedFileName);
Port_NewSearch_API(Microsoft.XLANGs.BaseTypes.TransportType) = "WCF-WebHttp";
Message_NewUnZip(WCF.SuppressMessageBodyForHttpVerbs) = "GET";