How to use Q.js with breeze - breeze

Question

This is my first attempt at using q.js. It appears to work, I have data being retrieved and then my function is called. The problem is the data is not being passed to the function. Is it a syntax problem or am I misusing Q?
getCategories = function (observable) {
var query = breeze.EntityQuery
.from("Categories")
.orderBy('Order');
Q(executeLocalQuery(query))
.then(processResult);
function processResult(data) { //data = undefined
if (data.results.length)
return observable(data.results)
else
return observable(create('Item', { CategoryId: id, Name: 'Add12', ImageName: 'icon.png', Order: '999' })); //create add thumbnail if zero records
};
},
executeLocalQuery = function (query) {
manager.executeQuery(query.using(breeze.FetchStrategy.FromLocalCache))
.then(localFetchSucceeded)
.fail(queryFailed);
function localFetchSucceeded(data) {
return data;
}
},

Answer 1

Solved it! No need to use Q when at executeLocalQuery. Changes are in the called function. Deferred waits for data.results and the resolves the defer. Then a promise is returned back to the caller. The caller can then process the .then and retrieve the data.
getCategories = function (observable) {
var query = breeze.EntityQuery
.from("Categories")
.orderBy('Order');
executeLocalQuery(query)
.then(processResult);
function processResult(data) {
if (data.results.length)
return observable(data.results)
else {
var addThumbnail = create('Category', { CategoryId: generateGUID(), Name: 'Add', ImageName: 'icon.png', Order: '999' });
observable(addThumbnail);
}
};
},
executeLocalQuery = function (query) {
var deferred = Q.defer();
manager.executeQuery(query.using(breeze.FetchStrategy.FromLocalCache))
.then(localFetchSucceeded)
.fail(queryFailed);
function localFetchSucceeded(data) {
deferred.resolve(data);
};
return deferred.promise;
},