/// <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>
/// Calls the base class method to process the primitive collection.
/// </summary>
/// <param name="payloadElement">The primitive collection to process.</param>
public override void Visit(PrimitiveCollection payloadElement)
{
ODataCollectionStart collectionStart = new ODataCollectionStart();
var annotation = new ODataCollectionItemsObjectModelAnnotation();
foreach (var primitive in payloadElement)
{
annotation.Add(primitive.ClrValue);
}
collectionStart.SetAnnotation <ODataCollectionItemsObjectModelAnnotation>(annotation);
}
/// <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);
}
}
/// <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>
/// Calls the base class method to process the instance collection.
/// </summary>
/// <param name="payloadElement">The complex instance collection to process.</param>
public override void Visit(ComplexInstanceCollection payloadElement)
{
ODataCollectionStart collectionStart = new ODataCollectionStart();
this.items.Push(collectionStart);
var annotation = new ODataCollectionItemsObjectModelAnnotation();
foreach (var complex in payloadElement)
{
this.items.Push(new ODataComplexValue()
{
TypeName = complex.FullTypeName
});
this.Recurse(complex);
annotation.Add(this.items.Pop());
}
collectionStart.SetAnnotation <ODataCollectionItemsObjectModelAnnotation>(annotation);
}
/// <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>
/// Read a collection as the message content.
/// </summary>
/// <param name="collectionReader">The collection reader to use for reading.</param>
/// <returns>An <see cref="ODataCollectionStart"/>, possibly with annotations.</returns>
public object ReadCollection(ODataCollectionReader collectionReader)
{
try
{
// read the start of the collection
collectionReader.Read();
this.assert.AreEqual(ODataCollectionReaderState.CollectionStart, collectionReader.State, "Reader states don't match.");
// NOTE: collection names are only present in ATOM; for JSON the name will be 'null'
ODataCollectionStart collectionStart = (ODataCollectionStart)collectionReader.Item;
ODataCollectionItemsObjectModelAnnotation itemsAnnotation = new ODataCollectionItemsObjectModelAnnotation();
while (collectionReader.Read())
{
if (collectionReader.State == ODataCollectionReaderState.Value)
{
object item = collectionReader.Item;
itemsAnnotation.Add(item);
}
else
{
break;
}
}
this.assert.AreEqual(ODataCollectionReaderState.CollectionEnd, collectionReader.State, "Reader states don't match.");
collectionReader.Read();
this.assert.AreEqual(ODataCollectionReaderState.Completed, collectionReader.State, "Reader states don't match.");
// attach the items to the collection and return it
collectionStart.SetAnnotation(itemsAnnotation);
return collectionStart;
}
catch (Exception e)
{
if (ExceptionUtilities.IsCatchable(e))
{
this.assert.AreEqual(ODataCollectionReaderState.Exception, collectionReader.State, "Expected the reader to be in 'Exception' state.");
}
throw;
}
}
/// <summary>
/// Calls the base class method to process the primitive collection.
/// </summary>
/// <param name="payloadElement">The primitive collection to process.</param>
public override void Visit(PrimitiveCollection payloadElement)
{
ODataCollectionStart collectionStart = new ODataCollectionStart();
var annotation = new ODataCollectionItemsObjectModelAnnotation();
foreach (var primitive in payloadElement)
{
annotation.Add(primitive.ClrValue);
}
collectionStart.SetAnnotation<ODataCollectionItemsObjectModelAnnotation>(annotation);
}
/// <summary>
/// Calls the base class method to process the instance collection.
/// </summary>
/// <param name="payloadElement">The complex instance collection to process.</param>
public override void Visit(ComplexInstanceCollection payloadElement)
{
ODataCollectionStart collectionStart = new ODataCollectionStart();
this.items.Push(collectionStart);
var annotation = new ODataCollectionItemsObjectModelAnnotation();
foreach (var complex in payloadElement)
{
this.items.Push(new ODataComplexValue()
{
TypeName = complex.FullTypeName
});
this.Recurse(complex);
annotation.Add(this.items.Pop());
}
collectionStart.SetAnnotation<ODataCollectionItemsObjectModelAnnotation>(annotation);
}
/// <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);
}
