/// <summary>
/// Visits a collection start.
/// </summary>
/// <param name="collection">The collection start to visit.</param>
protected virtual void VisitCollectionStart(ODataCollectionStart collectionStart)
{
ODataCollectionItemsObjectModelAnnotation items = collectionStart.GetAnnotation <ODataCollectionItemsObjectModelAnnotation>();
if (items != null)
{
foreach (object item in items)
{
this.Visit(item);
}
}
}
/// <summary>
/// Visits a collection start.
/// </summary>
/// <param name="collection">The collection start to visit.</param>
protected override ODataPayloadElement VisitCollectionStart(ODataCollectionStart collection)
{
ExceptionUtilities.CheckArgumentNotNull(collection, "collection");
// NOTE the Taupo OM does not currently support heterogenous collections; we determine the
// type of the collection by looking at the first non-null item
ODataCollectionItemsObjectModelAnnotation itemsAnnotation = collection.GetAnnotation <ODataCollectionItemsObjectModelAnnotation>();
ExceptionUtilities.Assert(itemsAnnotation != null, "itemsAnnotation != null");
// NOTE we assume that it is a primitive collection; if we find a collection of only null items we treat it as primitive
bool isComplexCollection = false;
foreach (object item in itemsAnnotation)
{
if (item != null)
{
isComplexCollection = item is ODataComplexValue;
break;
}
}
if (isComplexCollection)
{
ComplexInstanceCollection complexCollection = PayloadBuilder.ComplexCollection(collection.Name);
foreach (object item in itemsAnnotation)
{
ComplexInstance complexInstance = item == null
? new ComplexInstance(null, /*isNull*/ true)
: (ComplexInstance)this.Visit((ODataComplexValue)item);
complexCollection.Add(complexInstance);
}
return(complexCollection);
}
else
{
PrimitiveCollection primitiveCollection = PayloadBuilder.PrimitiveCollection(collection.Name);
foreach (object item in itemsAnnotation)
{
PrimitiveValue primitiveValue = (PrimitiveValue)this.Visit(item);
primitiveCollection.Add(primitiveValue);
}
return(primitiveCollection);
}
}
private void WriteCollection(ODataCollectionWriter collectionWriter, ODataCollectionStart collection)
{
collectionWriter.WriteStart(collection);
var annotation = collection.GetAnnotation <ODataCollectionItemsObjectModelAnnotation>();
if (annotation != null)
{
foreach (var item in annotation)
{
collectionWriter.WriteItem(item);
}
}
collectionWriter.WriteEnd();
}
/// <summary>
/// Visits a collection start.
/// </summary>
/// <param name="collection">The collection start to visit.</param>
protected override ODataPayloadElement VisitCollectionStart(ODataCollectionStart collection)
{
ExceptionUtilities.CheckArgumentNotNull(collection, "collection");
// NOTE the Taupo OM does not currently support heterogenous collections; we determine the
// type of the collection by looking at the first non-null item
ODataCollectionItemsObjectModelAnnotation itemsAnnotation = collection.GetAnnotation <ODataCollectionItemsObjectModelAnnotation>();
ExceptionUtilities.Assert(itemsAnnotation != null, "itemsAnnotation != null");
PrimitiveCollection primitiveCollection = PayloadBuilder.PrimitiveCollection(collection.Name);
foreach (object item in itemsAnnotation)
{
PrimitiveValue primitiveValue = (PrimitiveValue)this.Visit(item);
primitiveCollection.Add(primitiveValue);
}
return(primitiveCollection);
}
/// <summary>
/// Visits a collection of parameters.
/// </summary>
/// <param name="parameters">The parameters to visit.</param>
protected override ODataPayloadElement VisitParameters(ODataParameters parameters)
{
ExceptionUtilities.CheckArgumentNotNull(parameters, "parameters");
ComplexInstance result = new ComplexInstance();
result.IsNull = parameters.Count == 0;
foreach (var parameter in parameters)
{
if (parameter.Value == null)
{
result.Add(new PrimitiveProperty(parameter.Key, null, null));
continue;
}
ODataCollectionStart odataCollectionStart = parameter.Value as ODataCollectionStart;
if (odataCollectionStart != null)
{
ODataCollectionItemsObjectModelAnnotation annotation = odataCollectionStart.GetAnnotation <ODataCollectionItemsObjectModelAnnotation>();
PrimitiveMultiValue primitiveCollection = PayloadBuilder.PrimitiveMultiValue();
foreach (var value in annotation)
{
primitiveCollection.Item(value);
}
PrimitiveMultiValueProperty primitiveCollectionProperty = new PrimitiveMultiValueProperty(parameter.Key, primitiveCollection);
result.Add(primitiveCollectionProperty);
}
else
{
result.Add(new PrimitiveProperty(parameter.Key, null, PayloadBuilder.PrimitiveValue(parameter.Value).ClrValue));
}
}
return(result);
}
/// <summary>
/// Visits a collection of parameters.
/// </summary>
/// <param name="parameters">The parameters to visit.</param>
protected override ODataPayloadElement VisitParameters(ODataParameters parameters)
{
ExceptionUtilities.CheckArgumentNotNull(parameters, "parameters");
ComplexInstance result = new ComplexInstance();
result.IsNull = parameters.Count == 0;
foreach (var parameter in parameters)
{
if (parameter.Value == null)
{
result.Add(new PrimitiveProperty(parameter.Key, null, null));
continue;
}
ODataComplexValue odataComplexValue = parameter.Value as ODataComplexValue;
ODataCollectionStart odataCollectionStart = parameter.Value as ODataCollectionStart;
if (odataCollectionStart != null)
{
ODataCollectionItemsObjectModelAnnotation annotation = odataCollectionStart.GetAnnotation <ODataCollectionItemsObjectModelAnnotation>();
if (annotation.OfType <ODataComplexValue>().FirstOrDefault() != null)
{
ComplexMultiValue complexCollection = PayloadBuilder.ComplexMultiValue();
foreach (var value in annotation)
{
complexCollection.Item(this.VisitComplexValue(value as ODataComplexValue) as ComplexInstance);
}
ComplexMultiValueProperty complexCollectionProperty = new ComplexMultiValueProperty(parameter.Key, complexCollection);
result.Add(complexCollectionProperty);
}
else
{
PrimitiveMultiValue primitiveCollection = PayloadBuilder.PrimitiveMultiValue();
foreach (var value in annotation)
{
primitiveCollection.Item(value);
}
PrimitiveMultiValueProperty primitiveCollectionProperty = new PrimitiveMultiValueProperty(parameter.Key, primitiveCollection);
result.Add(primitiveCollectionProperty);
}
}
else if (odataComplexValue != null)
{
ComplexInstance complexInstance = PayloadBuilder.ComplexValue(odataComplexValue.TypeName);
complexInstance.IsNull = false;
foreach (ODataProperty odataProperty in odataComplexValue.Properties)
{
complexInstance.Property(odataProperty.Name, this.Visit(odataProperty.Value));
}
result.Add(new ComplexProperty(parameter.Key, complexInstance));
}
else
{
result.Add(new PrimitiveProperty(parameter.Key, null, PayloadBuilder.PrimitiveValue(parameter.Value).ClrValue));
}
}
return(result);
}
