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How to Invoke a Web Service with Jaggery

Learn why developers are gravitating towards Node and its ability to retain and leverage the skills of JavaScript developers and the ability to deliver projects faster than other languages can.  Brought to you in partnership with IBM.

Here's a snippet for invoking Jaggery, a framework to write webapps and HTTP-focused web services for all aspects of the application: front-end, communication, Server-side logic and persistence in pure Javascript.

var invokeRetrieveArtifactId =  function (applicationKey,version,revision){
    var ws = require('ws');
var retrieveArtifactIdProcess = new ws.WSRequest();
var options = new Array();
options.useSOAP = 1.1;
options.action = "urn:retrieveArtifactId";
options["HTTPHeaders"] = [ { name : "Cookie", value :modManager.getAdminCookie() }];
var payload = '<p:RetrieveArtifactIdRequest xmlns:p="http://retrieve.core.appfactory.carbon.wso2.org"><p:applicationId>'+applicationKey+'</p:applicationId><p:version>'+version+'</p:version><p:revision>'+revision+'</p:revision></p:RetrieveArtifactIdRequest>';
var result;

try {
   var endPoint =getProperty('ServerUrls.AppFactory')+'RetrieveArtifactService'; // provide the endpoint
   retrieveArtifactIdProcess.open(options,endPoint, false);
   retrieveArtifactIdProcess.send(payload);
   result = retrieveArtifactIdProcess.responseE4X;
   var resultNS = new Namespace("http://retrieve.core.appfactory.carbon.wso2.org");
   var artifactDetails = result.resultNS::["return"].text()

   if(log.isDebugEnabled()){
       log.debug("Invoking service endpoint:"+endPoint+" returned result:"+result);
   }
    return artifactDetails;
} catch (e) {
   log.error("Error while retrieving the artifact id"+applicationKey + "\n"+e.message);
   throw "Error while retrieving the artifact id"+applicationKey;
   }
}

Make the transition to Node.js if you are Java, PHP, Rails or .NET developer with these resources to help jumpstart your Node.js knowledge plus pick up some development tips.  Brought to you in partnership with IBM.

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Published at DZone with permission of Achala Chathuranga Aponso, DZone MVB. See the original article here.

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