Retrieve records from CRM using Odata Synchronous Operation

Hi,
 
Here is the JavaScript code for retrieving records from CRM using OData Synchronously.
 
function retrieveContactsByAccountId(accountId) {
    // Pass ‘Contact’ set name since we are reading Contacts
     var oDataSetName = “AccountSet”;
   // Column names of ‘Contact’ (Pass * to read all columns)
    var columns = “Name”;
    // Prepare filter
    var filter = “AccountId eq guid'” + accountId + “‘”;
    var requestResults = retrieveMultipleSync(oDataSetName, columns, filter);
    var account = null;
    if (requestResults != null) {
        if (requestResults.results != null && requestResults.results.length > 0) {
            for (var indxContacts = 0; indxContacts < requestResults.results.length; indxContacts++) {
                account = requestResults.results[indxContacts];
                if (account.Name) {
                    alert(account.Name);
                }
            }
        }
    }
    else {
        alert(“An error has occured. “ + service.responseText);
    }
}
 
// Retrieve Multiple Synchronous Operation.
function retrieveMultipleSync(odataSetName, select, filter) {
    // Get Server URL
    var serverUrl = “”;
    if (Xrm.Page.context.getClientUrl) {
        //Post UR 12
        serverUrl = Xrm.Page.context.getClientUrl();
    }
    else {
         //Pre UR 12
        serverUrl = Xrm.Page.context.getServerUrl();
    }
    var ODATA_ENDPOINT = “/XRMServices/2011/OrganizationData.svc”;
    var odataUri = serverUrl + ODATA_ENDPOINT + “/” + odataSetName + “?”;
    if (select) {
        odataUri += “$select=” + select;
    }
    if (filter) {
        odataUri += “&” + “$filter=” + filter;
    }
    var service = GetRequestObject();
    if (service != null) {
        service.open(“GET”, odataUri, false);
        service.setRequestHeader(“X-Requested-Width”, “XMLHttpRequest”);
        service.setRequestHeader(“Accept”, “application/json,text/javascript, */*”);
        service.send(null);
        var requestResults = eval(‘(‘ + service.responseText + ‘)’).d;
        return requestResults;
    }
}

function GetRequestObject() {

    if (window.XMLHttpRequest) {
        return new window.XMLHttpRequest;
    }
    else {
        try {
            return new ActiveXObject(“MSXML2.XMLHTTP.3.0”);
        }
        catch (ex) {
            return null;
        }
    }
}
 

Happy CRM’ing
Gopinath
 

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