internal void OnCollectionChanged(object collection, NotifyCollectionChangedEventArgs eventArgs)
{
Util.CheckArgumentNull(collection, "collection");
Util.CheckArgumentNull(eventArgs, "eventArgs");
Debug.Assert(BindingEntityInfo.IsDataServiceCollection(collection.GetType()), "We only register this event for DataServiceCollections.");
#if DEBUG
Debug.Assert(this.bindingGraph.IsTracking(collection), "Collection must be part of the graph if it has the event notification registered.");
#endif
object source;
string sourceProperty;
string sourceEntitySet;
string targetEntitySet;
this.bindingGraph.GetEntityCollectionInfo(
collection,
out source,
out sourceProperty,
out sourceEntitySet,
out targetEntitySet);
switch (eventArgs.Action)
{
case NotifyCollectionChangedAction.Add:
this.OnAddToCollection(
eventArgs,
source,
sourceProperty,
targetEntitySet,
collection);
break;
case NotifyCollectionChangedAction.Remove:
this.OnDeleteFromCollection(
eventArgs,
source,
sourceProperty,
collection);
break;
case NotifyCollectionChangedAction.Replace:
this.OnDeleteFromCollection(
eventArgs,
source,
sourceProperty,
collection);
this.OnAddToCollection(
eventArgs,
source,
sourceProperty,
targetEntitySet,
collection);
break;
case NotifyCollectionChangedAction.Reset:
if (this.DetachBehavior)
{
this.RemoveWithDetachCollection(collection);
}
else
{
this.bindingGraph.RemoveCollection(collection);
}
break;
#if !ASTORIA_LIGHT
case NotifyCollectionChangedAction.Move:
break;
#endif
default:
throw new InvalidOperationException(Strings.DataBinding_CollectionChangedUnknownAction(eventArgs.Action));
}
}
/// <summary>
/// Creates a new MediaEntryAttribute attribute and sets the name
/// of the member that contains the actual data of the media entry
/// (e.g. a byte[] containing a picture, a string containing HTML, etc.)
/// </summary>
/// <param name="mediaMemberName">Name of the member that contains the data for the media entry</param>
public MediaEntryAttribute(string mediaMemberName)
{
Util.CheckArgumentNull(mediaMemberName, "mediaMemberName");
this.mediaMemberName = mediaMemberName;
}
internal void OnPropertyChanged(object source, PropertyChangedEventArgs eventArgs)
{
Util.CheckArgumentNull(source, "source");
Util.CheckArgumentNull(eventArgs, "eventArgs");
#if DEBUG
Debug.Assert(this.bindingGraph.IsTracking(source), "Entity must be part of the graph if it has the event notification registered.");
#endif
string sourceProperty = eventArgs.PropertyName;
if (String.IsNullOrEmpty(sourceProperty))
{
this.HandleUpdateEntity(
source,
null,
null);
}
else
{
BindingEntityInfo.BindingPropertyInfo bpi;
object sourcePropertyValue = BindingEntityInfo.GetPropertyValue(source, sourceProperty, out bpi);
if (bpi != null)
{
this.bindingGraph.RemoveRelation(source, sourceProperty);
switch (bpi.PropertyKind)
{
case BindingPropertyKind.BindingPropertyKindCollection:
if (sourcePropertyValue != null)
{
try
{
typeof(BindingUtils)
.GetMethod("VerifyObserverNotPresent", BindingFlags.NonPublic | BindingFlags.Static)
.MakeGenericMethod(bpi.PropertyInfo.CollectionType)
.Invoke(null, new object[] { sourcePropertyValue, sourceProperty, source.GetType() });
}
catch (TargetInvocationException tie)
{
throw tie.InnerException;
}
try
{
this.AttachBehavior = true;
this.bindingGraph.AddCollection(
source,
sourceProperty,
sourcePropertyValue,
null);
}
finally
{
this.AttachBehavior = false;
}
}
break;
case BindingPropertyKind.BindingPropertyKindEntity:
this.bindingGraph.AddEntity(
source,
sourceProperty,
sourcePropertyValue,
null,
source);
break;
default:
Debug.Assert(bpi.PropertyKind == BindingPropertyKind.BindingPropertyKindComplex, "Must be complex type if PropertyKind is not entity or collection.");
if (sourcePropertyValue != null)
{
this.bindingGraph.AddComplexProperty(
source,
sourceProperty,
sourcePropertyValue);
}
this.HandleUpdateEntity(
source,
sourceProperty,
sourcePropertyValue);
break;
}
}
else
{
this.HandleUpdateEntity(
source,
sourceProperty,
sourcePropertyValue);
}
}
}
/// <summary>Initializes a new instance of the <see cref="T:System.Data.Services.Client.DataServiceRequest`1" /> class. </summary>
/// <param name="requestUri">The URI object that contains the request string.</param>
public DataServiceRequest(Uri requestUri)
{
Util.CheckArgumentNull(requestUri, "requestUri");
this.requestUri = requestUri;
}
/// <summary>Creates and executes a DataServiceQuery based on the passed in expression</summary>
/// <typeparam name="TResult">generic type</typeparam>
/// <param name="expression">The expression for the new query</param>
/// <returns>the results</returns>
public TResult Execute <TResult>(Expression expression)
{
Util.CheckArgumentNull(expression, "expression");
return(ReturnSingleton <TResult>(expression));
}
/// <summary>Factory method for creating DataServiceOrderedQuery based on expression </summary>
/// <typeparam name="TElement">generic type</typeparam>
/// <param name="expression">The expression for the new query</param>
/// <returns>new DataServiceQuery</returns>
public IQueryable <TElement> CreateQuery <TElement>(Expression expression)
{
Util.CheckArgumentNull(expression, "expression");
return(new DataServiceQuery <TElement> .DataServiceOrderedQuery(expression, this));
}
/// <summary>
/// Initializes a new instance of the <see cref="ReadingNavigationLinkArgs" /> class.
/// </summary>
/// <param name="link">The link.</param>
public ReadingNavigationLinkArgs(ODataNavigationLink link)
{
Util.CheckArgumentNull(link, "link");
this.Link = link;
}
