public static RequestOp CreateOp(object model, long timeMs)
{
return(new RequestOp(
timeMs,
model.GetType(),
RequestVerb.Create,
CascadeTypeUtils.GetCascadeId(model),
model
));
}
public async Task <OpResponse> Fetch(RequestOp requestOp)
{
if (requestOp.Type != typeof(Model))
{
throw new Exception("requestOp.Type != typeof(Model)");
}
switch (requestOp.Verb)
{
case RequestVerb.Get:
var id = (IdType?)CascadeTypeUtils.ConvertTo(typeof(IdType), requestOp.Id); // ((IdType)requestOp.Id)!;
if (id == null)
{
throw new Exception("Unable to get right value for Id");
}
if (models.ContainsKey(id))
{
return(new OpResponse(
requestOp,
Cascade.NowMs,
connected: true,
exists: true,
result: models[id].Item1,
arrivedAtMs: models[id].Item2
));
}
else
{
return(new OpResponse(
requestOp,
Cascade.NowMs,
connected: true,
exists: false,
result: null,
arrivedAtMs: null
));
}
break;
case RequestVerb.Query:
if (collections.ContainsKey(requestOp.Key !))
{
return(new OpResponse(
requestOp,
Cascade.NowMs,
connected: true,
exists: true,
result: collections[requestOp.Key !].Item1,
public async Task TestCollections()
{
var path = System.IO.Path.GetTempFileName();
var conn = new SQLite.SQLiteAsyncConnection(path);
var db = new TestDatabase(conn);
await db.Reset();
var sqliteThingCache = new SqliteClassCache <Parent, long>(db);
await sqliteThingCache.Setup();
var sqliteGadgetCache = new SqliteClassCache <Child, string>(db);
await sqliteGadgetCache.Setup();
var cache = new ModelCache(aClassCache: new Dictionary <Type, IModelClassCache>()
{
{ typeof(Parent), sqliteThingCache },
{ typeof(Child), sqliteGadgetCache }
});
var cascade = new CascadeDataLayer(origin, new ICascadeCache[] { cache }, new CascadeConfig()
{
DefaultFreshnessSeconds = 1
});
var collection_key = "my_things";
var ids = ImmutableArray.Create <object>(1, 2, 3);
var response = await cache.Fetch(RequestOp.QueryOp <Parent>(collection_key, new JsonObject(), 0));
Assert.AreEqual(false, response.Exists);
Assert.AreEqual(null, response.Result);
await cache.StoreCollection(typeof(Parent), collection_key, ids, 0);
response = await cache.Fetch(RequestOp.QueryOp <Parent>(collection_key, null, 0));
Assert.IsTrue(CascadeTypeUtils.IsEqualEnumerable(ids, response.ResultIds));
response = await cache.Fetch(RequestOp.QueryOp <Parent>("not_my_key", null, 0));
Assert.IsFalse(response.Exists);
response = await cache.Fetch(RequestOp.QueryOp <Child>(collection_key, null, 0));
Assert.IsFalse(response.Exists);
}
//
//
// // special case for enums
// if (targetType.IsEnum) {
// // we could be going from an int -> enum so specifically let
// // the Enum object take care of this conversion
// if (value != null) {
// value = Enum.ToObject(targetType, value);
// }
// }
// else {
// // returns an System.Object with the specified System.Type and whose value is
// // equivalent to the specified object.
// value = Convert.ChangeType(value, targetType);
// }
// set the value of the property
// propertyInfo.SetValue(target, value, null);
// }
private async Task processHasMany(SuperModel model, Type modelType, PropertyInfo propertyInfo, HasManyAttribute attribute)
{
var propertyType = CascadeTypeUtils.DeNullType(propertyInfo.PropertyType);
var isEnumerable = (propertyType?.Implements <IEnumerable>() ?? false) && propertyType != typeof(string);
var foreignType = isEnumerable ? CascadeTypeUtils.InnerType(propertyType !) : null;
foreignType = foreignType != null?CascadeTypeUtils.DeNullType(foreignType) : null;
if (foreignType == null)
{
throw new ArgumentException("Unable to get foreign model type. Property should be of type ImmutableArray<ChildModel>");
}
// var typeLayers = GetTypeLayers(propertyType);
// var nonNullableType = DeNullType(propertyType);
//
// typeLayers.FirstOrDefault(t => t.Name != "Nullable`1");
//
// var foreignType = isEnumerable ? propertyType.GetGenericArguments().FirstOrDefault() : null;
object modelId = CascadeTypeUtils.GetCascadeId(model);
var key = $"HasMany__{foreignType.Name}__{attribute.ForeignIdProperty}__{modelId}";
var requestOp = new RequestOp(
NowMs,
foreignType,
RequestVerb.Query,
null,
null,
0,
new Dictionary <string, object>()
{
[attribute.ForeignIdProperty] = modelId
},
key
);
var opResponse = await ProcessRequest(requestOp);
CascadeTypeUtils.SetModelCollectionProperty(model, propertyInfo, opResponse.Results);
//propertyInfo.SetValue(model,opResponse.Results);
}
private async Task processBelongsTo(object model, Type modelType, PropertyInfo propertyInfo, BelongsToAttribute attribute)
{
var foreignModelType = CascadeTypeUtils.DeNullType(propertyInfo.PropertyType);
var idProperty = modelType.GetProperty(attribute.IdProperty);
var id = idProperty.GetValue(model);
if (id == null)
{
return;
}
var requestOp = new RequestOp(
NowMs,
foreignModelType,
RequestVerb.Get,
id,
freshnessSeconds: Config.DefaultFreshnessSeconds
);
var opResponse = await ProcessRequest(requestOp);
SetModelProperty(model, propertyInfo, opResponse.Result);
}
public async Task <OpResponse> Fetch(RequestOp requestOp)
{
if (requestOp.Type != typeof(Model))
{
throw new Exception("requestOp.Type != typeof(Model)");
}
switch (requestOp.Verb)
{
case RequestVerb.Get:
var id = (IdType?)CascadeTypeUtils.ConvertTo(typeof(IdType), requestOp.Id); // ((IdType)requestOp.Id)!;
if (id == null)
{
throw new Exception("Unable to get right value for Id");
}
if (await _database.Exists <Model>(id))
{
var meta = await _database.Get <CascadeModelMeta>(CascadeModelMeta.GenerateId <Model>(id));
return(new OpResponse(
requestOp,
Cascade !.NowMs,
connected: true,
exists: true,
result: await _database.Get <Model>(id),
arrivedAtMs: meta?.arrived_at
));
}
else
{
return(new OpResponse(
requestOp,
Cascade !.NowMs,
connected: true,
exists: false,
result: null,
arrivedAtMs: null
));
}
break;
case RequestVerb.Query:
var collection = await _database.Get <CascadeCollection>(CascadeCollection.GenerateId <Model>(requestOp.Key !));
if (collection != null)
{
return(new OpResponse(
requestOp,
Cascade !.NowMs,
connected: true,
exists: true,
result: collection.objectIds,
arrivedAtMs: collection.arrived_at
));
}
else
{
return(new OpResponse(
requestOp,
Cascade !.NowMs,
connected: true,
exists: false,
result: null,
arrivedAtMs: null
));
}
break;
default:
throw new NotImplementedException($"Unsupported {requestOp.Verb}");
}
}