Use dojo.xhrpost to create automatically a workitem

You can do most things with XHR POSTs that you can do with any other HTTP client. Though for security, the browser restricts you to only making POSTs to the current hostname you're on (that the page was originally loaded from). So you won't be able to do it from another page on another host. Other than that you can put anything in the body and add whatever headers you need. The browser will automate some things for you, like Accept and Accept-Encoding headers (gzip support), cookies, and authentication.

Before to it in a pluggin, I have tried to custom attribut script (Calculated Values).
I trie with the following source code:
dojo.provide("org.example.workitems.providers.postrequest");
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dojo.require("com.ibm.team.workitem.api.common.WorkItemAttributes");

(function() {
var WorkItemAttributes= com.ibm.team.workitem.api.common.WorkItemAttributes;

dojo.declare("org.example.workitems.providers.postrequest", null, {
    getValue: function(attributeId, workItem, configuration) {
       
        var xhrArgs = {
          url: "https://<my server>/ccm/oslc/workitems/522/rtc_cm:com.ibm.team.scm.svn.linkType.workItem.s",
          postData: dojo.toJson({"rdf:resource":"http://www.david.com","oslc_cm:label":"add a new comment"}),
          handleAs: "json",
         // headers:
        }
        dojo.xhrPost(xhrArgs);
       
        return "system impact";
       
    }
});
})();
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This source code doesn't work. Do you think that it can work ?
What is different to execute dojo code source througth a plugin and to execute dojo code source throught custom attribut ?

In my log server, I have this error:
org.mozilla.javascript.EcmaError: TypeError: Cannot find function xhrPost in object [object Object]

So I think I must to add some require but what ?

Finally I managed to perform this source code. I have integrated it in javascript plugin and it's OK.
Also I have added some header.to accept json application.

David,

So it didn't work within the javascript API? you had to write a eclipse plugin?

Thanks,
Binoy