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How to retrieve a list of objects which are a property of a class with JDOQL?


By : egraham
Date : October 17 2020, 11:12 AM
hope this fix your issue Why use getSimpleName() since that just puts the class name? JDOQL requires the class name, including package as per the JDO spec (getName() is better). Also you do NOT need @Persistent on String fields no matter what Google tells you :-P Saludos
code :


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Declarative JDOQL vs Single-String JDOQL : performance


By : echojeff
Date : March 29 2020, 07:55 AM
this one helps. No performance difference at all. The only thing that happens is that the single-string form is parsed into the components. Use which you find most convenient. Alternatively use QueryDSL's JDOQL. JDO3.x has slated the provision of a type-safe refactorable query API, but something that is usable (unlike JPA2 Criteria) akin to QueryDSL

How can I retrieve all property values from a list of common objects?


By : user2684752
Date : March 29 2020, 07:55 AM
this will help I want to retrieve all single properties from a collection as an array: , You can use:
code :
string[] allBars = list.Select(foo => foo.Bar).ToArray();
var allBars = list.Select(foo => foo.Bar); // Will produce IEnumerable<string>
foreach(var bar in allBars)
{
    // Do something with bar
}

How can I retrieve a list of objects from a class relation?


By : user3420660
Date : March 29 2020, 07:55 AM
I wish this helpful for you The relation answers a query. Run that query to get the related elements.
code :
Parse.Cloud.define("retrieveNearbyLocationsAndItemsWithCurrentLocation", function(request, response) {
    var Store = Parse.Object.extend("Store");
    var store = new Store();
    var query = new Parse.Query(Store);
    var userGeoPoint = new Parse.GeoPoint(request.params.lat, request.params.long);
    query.near("geopoint", userGeoPoint);
    query.limit(1);

    query.find().then(function(stores) {
        if (stores.length && stores[0].relation("itemsInStore")) {
            var itemQuery = stores[0].relation("itemsInStore").query();
            return itemQuery.find();
        } else {
            return [];
        }
    }).then(function(items) {
        response.success(items);
    }, function(error) {
        response.error(error);
    });
});

Cannot retrieve property from list of objects


By : Lilyputter
Date : March 29 2020, 07:55 AM
hop of those help? .Select is similar to the SQL select, you get a list of results back and not a single string. Once you called .toString() you are getting the default Enumerable toString() and not just the result you wanted. you can try using First or Single (in case it is unique) instead
code :
tenderName = _vfpTenderTypes.First(x => x.ID == tenderCode).Name

How do I retrieve data from a list<> containing class objects


By : Albert Augustin
Date : March 29 2020, 07:55 AM
hope this fix your issue Please show us the code for the Recipe class. Besides that, you're most of the way there...
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