public Task <IEnumerable <T> > QueryAsync <T>(string queryName, IEnumerable <QueryParameter> queryParameters, Dictionary <string, object> stepBagItems, IGraphRequestContext graphRequestContext) where T : class
{
Dictionary <string, object> collection = GetCollection <T>();
var parameters = queryParameters.ToList();
if (parameters.Count > 0)
{
return(Task.FromResult(_inMemoryComparerProvider.Query(queryParameters, collection.Values.ToList()).Select(x => (T)x)));
}
return(Task.FromResult(collection.Values.Select(x => (T)x).AsEnumerable()));
}
private QueryStep QuerySource(Action <QueryExecutionContext> mapper)
{
var queryStep = _source.NewQueryStep();
var type = typeof(TSource);
var typeAccessor = TypeAccessor.Create(type);
var members = typeAccessor.GetMembers().ToList();
// TODO: Support multiple keys
var idMember = members.Single(x => x.GetAttribute(typeof(KeyAttribute), false) != null);
queryStep.QueryParameters.Add(new QueryParameter
{
MemberModel = new ModelMember(type, typeAccessor, idMember, false),
Rule = new ContextValueSetRule {
ForceCreateContextValueIfNull = true
}
});
queryStep.InMemoryFilterQueryParameters = GetInMemoryFilterQueryParameters();
queryStep.StepMapper = (ctx) =>
{
var connectionEdges = ctx.Context.GetQueryResults <ConnectionEdge>();
if (mapper != null)
{
var items = connectionEdges.Select(x => JsonConvert.DeserializeObject(
x.MetaValue, Type.GetType(x.MetaType))).ToList();
if (ctx.QueryStep.InMemoryFilterQueryParameters != null &&
ctx.QueryStep.InMemoryFilterQueryParameters.Count > 0)
{
items = _inMemoryComparerProvider.Query(ctx.QueryStep.InMemoryFilterQueryParameters, items);
var metaValues = items.Select(JsonConvert.SerializeObject).ToList();
connectionEdges = connectionEdges.Where(c => metaValues.Contains(c.MetaValue)).ToList();
}
// Override result.
ctx.Context.SetQueryResult(items);
mapper(ctx.Context);
}
return(connectionEdges.Select(x => (object)x.SourceId).ToList());
};
return(queryStep);
}
