/// <summary>
/// Invokes the Count extension method on the wrapped query via reflection
/// </summary>
/// <typeparam name="TElement">The element type of the wrapped query</typeparam>
/// <param name="query">The wrapped query</param>
/// <returns>The results of the count extension method</returns>
public static int Count <TElement>(this WrappedDataServiceQuery <TElement> query) where TElement : WrappedObject
{
ExceptionUtilities.CheckArgumentNotNull(query, "query");
var countMethod = typeof(Queryable).GetMethods(true, true).SingleOrDefault(m => m.Name == "Count" && m.GetParameters().Length == 1);
ExceptionUtilities.CheckObjectNotNull(countMethod, "Could not find method 'Count' on type 'Queryable'");
countMethod = countMethod.MakeGenericMethod(query.ElementType);
var product = query.Product;
return((int)countMethod.Invoke(null, new object[] { product }));
}
/// <summary>
/// Invokes the Skip extension method on the wrapped query via reflection
/// </summary>
/// <typeparam name="TElement">The element type of the wrapped query</typeparam>
/// <param name="query">The wrapped query</param>
/// <param name="count">The number of elements to skip</param>
/// <returns>The wrapped query after calling Skip</returns>
public static WrappedDataServiceQuery <TElement> Skip <TElement>(this WrappedDataServiceQuery <TElement> query, int count) where TElement : WrappedObject
{
ExceptionUtilities.CheckArgumentNotNull(query, "query");
var skipMethod = typeof(Queryable).GetMethod("Skip", true, true);
ExceptionUtilities.CheckObjectNotNull(skipMethod, "Could not find method 'Skip' on type 'Queryable'");
skipMethod = skipMethod.MakeGenericMethod(query.ElementType);
var product = query.Product;
product = skipMethod.Invoke(null, new object[] { product, count });
return(query.Scope.Wrap <WrappedDataServiceQuery <TElement> >(product));
}
/// <summary>
/// Initializes a new instance of the EventsTracker class.
/// </summary>
/// <param name="wrapType">The wrapper type.</param>
public EventsTracker(WrappedDataServiceQuery wrapType)
{
this.wrapperType = wrapType;
}
/// <summary>
/// Initializes a new instance of the EventsTracker class.
/// </summary>
/// <param name="wrapType">The wrapper type.</param>
public EventsTracker(WrappedDataServiceQuery wrapType)
{
this.wrapperType = wrapType;
}
/// <summary>
/// Extension method to perform sync/async version of DataServiceQuery.Execute dynamically
/// </summary>
/// <typeparam name="TElement">The element type of the wrapped results</typeparam>
/// <param name="query">The query to execute</param>
/// <param name="continuation">The asynchronous continuation</param>
/// <param name="async">A value indicating whether or not to use async API</param>
/// <param name="onCompletion">A callback for when the call completes</param>
public static void Execute <TElement>(this WrappedDataServiceQuery <TElement> query, IAsyncContinuation continuation, bool async, Action <WrappedIEnumerable <TElement> > onCompletion) where TElement : WrappedObject
{
ExceptionUtilities.CheckArgumentNotNull(query, "query");
AsyncHelpers.InvokeSyncOrAsyncMethodCall <WrappedIEnumerable <TElement> >(continuation, async, () => query.Execute(), c => query.BeginExecute(c, null), r => query.EndExecute(r), onCompletion);
}
