protected override RequestHandler DispatchHandler()
{
if (this.QueryContext.QueryPath.LastSegment is OperationSegment || this.QueryContext.QueryPath.LastSegment is OperationImportSegment)
{
return(new OperationHandler(this, HttpMethod.POST));
}
if (this.QueryContext.QueryPath.LastSegment is BatchSegment)
{
return(new BatchHandler(this));
}
if (!this.QueryContext.Target.IsReference && Utility.IsMediaEntity(EdmClrTypeUtils.GetInstanceType(this.QueryContext.Target.ElementType.FullTypeName())))
{
return(new MediaStreamHandler(this, this.HttpMethod));
}
return(null);
}
public virtual object Create(string fullTypeName, object source)
{
if (string.IsNullOrEmpty(fullTypeName))
{
throw new ArgumentNullException("fullTypeName");
}
if (source == null)
{
throw new ArgumentNullException("source");
}
var type = EdmClrTypeUtils.GetInstanceType(fullTypeName);
var instance = Utility.QuickCreateInstance(type);
this.pendingChanges.Add(() => ((IList)source).Add(instance));
return(instance);
}
protected override RequestHandler DispatchHandler()
{
if (!this.QueryContext.Target.IsReference)
{
if (this.QueryContext.Target.Type is IEdmCollectionType)
{
if (Utility.IsMediaEntity(EdmClrTypeUtils.GetInstanceType(this.QueryContext.Target.ElementType.FullTypeName())))
{
return(new MediaStreamHandler(this, this.HttpMethod));
}
}
else
{
if (Utility.IsMediaEntity(EdmClrTypeUtils.GetInstanceType(this.QueryContext.Target.Type.FullTypeName())))
{
return(new MediaStreamHandler(this, this.HttpMethod));
}
}
}
return(null);
}
private void ProcessUpdateRequestBody(IODataRequestMessage requestMessage, IODataResponseMessage responseMessage, object targetObject, bool isUpsert)
{
if ((this.QueryContext.Target.NavigationSource != null &&
(this.QueryContext.Target.TypeKind == EdmTypeKind.Entity || this.QueryContext.Target.TypeKind == EdmTypeKind.Complex)) ||
(this.QueryContext.Target.Property != null && this.QueryContext.Target.TypeKind == EdmTypeKind.Complex))
{
using (var messageReader = new ODataMessageReader(requestMessage, this.GetReaderSettings()))
{
var entryReader = messageReader.CreateODataResourceReader(this.QueryContext.Target.NavigationSource, (IEdmStructuredType)this.QueryContext.Target.Type);
// Need to handle complex property or collection of complex property
var odataItemStack = new Stack <ODataItem>();
var entityStack = new Stack <IEdmNavigationSource>();
var parentInstances = new Stack <object>();
var currentTargetEntitySet = this.QueryContext.Target.NavigationSource;
int levelOfUndeclaredProperty = 0;
while (entryReader.Read())
{
switch (entryReader.State)
{
case ODataReaderState.ResourceStart:
{
if (levelOfUndeclaredProperty > 0)
{
break;
}
var entry = (ODataResource)entryReader.Item;
if (entry == null)
{
break;
}
odataItemStack.Push(entryReader.Item);
entityStack.Push(currentTargetEntitySet);
if (parentInstances.Count == 0)
{
parentInstances.Push(targetObject);
}
else
{
var parent2 = parentInstances.Peek();
if (parent2 == null)
{
// Here is for collection, we need to create a brand new instance.
var valueType = EdmClrTypeUtils.GetInstanceType(entry.TypeName);
parentInstances.Push(Utility.QuickCreateInstance(valueType));
}
else
{
parentInstances.Push(parent2);
}
}
break;
}
case ODataReaderState.ResourceEnd:
{
if (levelOfUndeclaredProperty > 0)
{
break;
}
var entry = (ODataResource)entryReader.Item;
if (entry == null)
{
break;
}
object newInstance = parentInstances.Pop();
currentTargetEntitySet = entityStack.Pop();
foreach (var property in entry.Properties)
{
if (Utility.IsETagProperty(targetObject, property.Name))
{
continue;
}
// the property might be an open property, so test null first
var propertyInfo = newInstance.GetType().GetProperty(property.Name);
if (propertyInfo != null)
{
if (!isUpsert && Utility.IsReadOnly(propertyInfo))
{
continue;
}
}
this.DataSource.UpdateProvider.Update(newInstance, property.Name, property.Value);
}
var boundNavPropAnnotation = odataItemStack.Pop().GetAnnotation <BoundNavigationPropertyAnnotation>();
if (boundNavPropAnnotation != null)
{
foreach (var boundProperty in boundNavPropAnnotation.BoundProperties)
{
var isCollection = boundProperty.Item1.IsCollection == true;
var propertyValue = isCollection ? boundProperty.Item2 : ((IEnumerable <object>)boundProperty.Item2).Single();
this.DataSource.UpdateProvider.Update(newInstance, boundProperty.Item1.Name, propertyValue);
}
}
var parentItem = odataItemStack.Count > 0 ? odataItemStack.Peek() : null;
if (parentItem != null)
{
// This new entry belongs to a navigation property and/or feed -
// propagate it up the tree for further processing.
AddChildInstanceAnnotation(parentItem, newInstance);
}
}
break;
case ODataReaderState.ResourceSetStart:
if (levelOfUndeclaredProperty > 0)
{
break;
}
odataItemStack.Push(entryReader.Item);
//"null" here indicate that we need to create a new instance for collection to replace the old one.
parentInstances.Push(null);
break;
case ODataReaderState.ResourceSetEnd:
{
if (levelOfUndeclaredProperty > 0)
{
break;
}
parentInstances.Pop();
var childAnnotation = odataItemStack.Pop().GetAnnotation <ChildInstanceAnnotation>();
var parentNavLink = odataItemStack.Count > 0 ? odataItemStack.Peek() as ODataNestedResourceInfo : null;
if (parentNavLink != null)
{
// This feed belongs to a navigation property or complex property or a complex collection property.
// propagate it up the tree for further processing.
AddChildInstanceAnnotations(parentNavLink, childAnnotation == null ? new object[0] : (childAnnotation.ChildInstances ?? new object[0]));
}
}
break;
case ODataReaderState.NestedResourceInfoStart:
{
object parent = parentInstances.Peek();
var nestedResourceInfo = (ODataNestedResourceInfo)entryReader.Item;
var property = parent.GetType().GetProperty(nestedResourceInfo.Name);
if (property == null || levelOfUndeclaredProperty > 0)
{
levelOfUndeclaredProperty++;
}
// skip undeclared property
if (levelOfUndeclaredProperty > 0)
{
break;
}
odataItemStack.Push(entryReader.Item);
var propertyInstance = property.GetValue(parent);
parentInstances.Push(propertyInstance);
IEdmNavigationProperty navigationProperty = currentTargetEntitySet == null ? null : currentTargetEntitySet.EntityType().FindProperty(nestedResourceInfo.Name) as IEdmNavigationProperty;
// Current model implementation doesn't expose associations otherwise this would be much cleaner.
if (navigationProperty != null)
{
currentTargetEntitySet = this.DataSource.Model.EntityContainer.EntitySets().Single(s => s.EntityType() == navigationProperty.Type.Definition);
}
else
{
currentTargetEntitySet = null;
}
entityStack.Push(currentTargetEntitySet);
break;
}
case ODataReaderState.NestedResourceInfoEnd:
{
// check: skip or not
int theLevelOfUndeclaredProperty = levelOfUndeclaredProperty;
if (levelOfUndeclaredProperty > 0)
{
levelOfUndeclaredProperty--;
}
// skip undeclared property
if (theLevelOfUndeclaredProperty > 0)
{
break;
}
var navigationLink = (ODataNestedResourceInfo)entryReader.Item;
parentInstances.Pop();
var childAnnotation = odataItemStack.Pop().GetAnnotation <ChildInstanceAnnotation>();
if (childAnnotation != null)
{
// Propagate the bound resources to the parent resource.
AddBoundNavigationPropertyAnnotation(odataItemStack.Peek(), navigationLink, childAnnotation == null ? new object[0] : childAnnotation.ChildInstances);
}
entityStack.Pop();
currentTargetEntitySet = entityStack.Peek();
break;
}
}
}
}
}
else
{
throw Utility.BuildException(
HttpStatusCode.NotImplemented,
string.Format("PATCH/PUT for '{0}' type is not supported.", this.QueryContext.Target.TypeKind),
null);
}
var currentETag = Utility.GetETagValue(targetObject);
// if the current entity has ETag field
if (currentETag != null)
{
if (!isUpsert)
{
this.DataSource.UpdateProvider.UpdateETagValue(targetObject);
}
this.DataSource.UpdateProvider.SaveChanges();
currentETag = Utility.GetETagValue(targetObject);
responseMessage.SetHeader(ServiceConstants.HttpHeaders.ETag, currentETag);
}
else
{
this.DataSource.UpdateProvider.SaveChanges();
}
ResponseWriter.WriteEmptyResponse(responseMessage);
}
private static void UpdateCore(object target, string propertyName, object propertyValue)
{
var odataComplexValue = propertyValue as ODataComplexValue;
var odataCollectionValue = propertyValue as ODataCollectionValue;
var odataEnumValue = propertyValue as ODataEnumValue;
var odataPrimitiveValue = propertyValue as ODataPrimitiveValue;
if (odataComplexValue != null)
{
var property = target.GetType().GetProperty(propertyName);
if (property != null)
{
var value = property.GetValue(target, null);
if (value == null)
{
var valueType = EdmClrTypeUtils.GetInstanceType(odataComplexValue.TypeName);
var propertyType = property.PropertyType;
if (valueType.IsSubclassOf(propertyType) || valueType == propertyType)
{
value = Utility.QuickCreateInstance(valueType);
}
else
{
throw new InvalidOperationException(string.Format("{0} is not equal or derived from {1}", valueType, propertyType));
}
property.SetValue(target, value, null);
}
foreach (var p in odataComplexValue.Properties)
{
UpdateCore(value, p.Name, p.Value);
}
return;
}
}
else if (odataCollectionValue != null)
{
var property = target.GetType().GetProperty(propertyName);
if (property != null)
{
var collection = Utility.QuickCreateInstance(property.PropertyType);
foreach (var item in odataCollectionValue.Items)
{
var itemType = property.PropertyType.GetGenericArguments().Single();
odataComplexValue = item as ODataComplexValue;
odataCollectionValue = item as ODataCollectionValue;
object collectionItem = null;
if (odataComplexValue != null)
{
// TODO: call Create method to new instance instead
collectionItem = Utility.QuickCreateInstance(itemType);
foreach (var p in odataComplexValue.Properties)
{
UpdateCore(collectionItem, p.Name, p.Value);
}
}
else if (odataCollectionValue != null)
{
// TODO, check should support this type or not
throw new NotImplementedException();
}
else
{
collectionItem = ODataObjectModelConverter.ConvertPropertyValue(item, itemType);
}
property.PropertyType.GetMethod("Add").Invoke(collection, new object[] { collectionItem });
}
property.SetValue(target, collection, null);
return;
}
}
else
{
var property = target.GetType().GetProperty(propertyName);
if (property != null)
{
property.SetValue(target, ODataObjectModelConverter.ConvertPropertyValue(propertyValue, property.PropertyType), null);
return;
}
}
var openClrObject = target as OpenClrObject;
if (openClrObject != null)
{
var structuredType = (IEdmStructuredType)EdmClrTypeUtils.GetEdmType(DataSourceManager.GetCurrentDataSource().Model, openClrObject);
//check if the edmType is an open type
if (structuredType.IsOpen)
{
if (odataCollectionValue != null)
{
// Collection of Edm.String
if (odataCollectionValue.TypeName == "Collection(Edm.String)")
{
var collection = new Collection <string>();
foreach (var it in odataCollectionValue.Items)
{
collection.Add(it as string);
}
openClrObject.OpenProperties[propertyName] = collection;
}
else
{
// TODO: handle other types.
throw new NotImplementedException();
}
}
else if (odataComplexValue != null)
{
var type = EdmClrTypeUtils.GetInstanceType(odataComplexValue.TypeName);
var value = Utility.QuickCreateInstance(type);
foreach (var property in odataComplexValue.Properties)
{
UpdateCore(value, property.Name, property.Value);
}
openClrObject.OpenProperties[propertyName] = value;
}
else if (odataEnumValue != null)
{
var type = EdmClrTypeUtils.GetInstanceType(odataEnumValue.TypeName);
openClrObject.OpenProperties[propertyName] = ODataObjectModelConverter.ConvertPropertyValue(propertyValue, type);
}
else if (odataPrimitiveValue != null)
{
openClrObject.OpenProperties[propertyName] = odataPrimitiveValue.Value;
}
else
{
openClrObject.OpenProperties[propertyName] = propertyValue;
}
}
}
}
private object ProcessPostBody(IODataRequestMessage message, IEdmEntitySetBase entitySet, object queryResults)
{
object lastNewInstance = null;
using (var messageReader = new ODataMessageReader(message, this.GetReaderSettings()))
{
var odataItemStack = new Stack <ODataItem>();
var entityStack = new Stack <IEdmEntitySetBase>();
var entryReader = messageReader.CreateODataResourceReader(entitySet, entitySet.EntityType());
var currentTargetEntitySet = entitySet;
while (entryReader.Read())
{
switch (entryReader.State)
{
case ODataReaderState.ResourceStart:
{
var entry = (ODataResource)entryReader.Item;
if (entry == null)
{
break;
}
odataItemStack.Push(entryReader.Item);
entityStack.Push(currentTargetEntitySet);
break;
}
case ODataReaderState.ResourceEnd:
{
var entry = (ODataResource)entryReader.Item;
if (entry == null)
{
break;
}
// TODO: the code here will be changed to handle following scenarios
// 1: non-contained navigation, e.g. People(1)/Friends
// 2. general entity set, e.g. People
// 3. contained navigation, e.g. People(1)/Trips
// 4. complex property, e.g. Airports('KSFO')/Location
// 5. upsert, e.g. People(1)/Friends(2)
object newInstance;
currentTargetEntitySet = entityStack.Pop();
if (currentTargetEntitySet == null)
{
// For entry
var valueType = EdmClrTypeUtils.GetInstanceType(entry.TypeName);
newInstance = Utility.QuickCreateInstance(valueType);
}
else
{
// For complex property
newInstance = this.DataSource.UpdateProvider.Create(entry.TypeName, queryResults);
}
foreach (var property in entry.Properties)
{
if (Utility.IsETagProperty(newInstance, property.Name))
{
continue;
}
this.DataSource.UpdateProvider.Update(newInstance, property.Name, property.Value);
}
var boundNavPropAnnotation = odataItemStack.Pop().GetAnnotation <BoundNavigationPropertyAnnotation>();
if (boundNavPropAnnotation != null)
{
foreach (var boundProperty in boundNavPropAnnotation.BoundProperties)
{
var isCollection = boundProperty.Item1.IsCollection == true;
var propertyValue = isCollection ? boundProperty.Item2 : ((IEnumerable <object>)boundProperty.Item2).Single();
this.DataSource.UpdateProvider.Update(newInstance, boundProperty.Item1.Name, propertyValue);
}
}
var parentItem = odataItemStack.Count > 0 ? odataItemStack.Peek() : null;
if (parentItem != null)
{
// This new resource belongs to a navigation property and/or complex/complex collection property and/or feed -
// propagate it up the tree for further processing.
AddChildInstanceAnnotation(parentItem, newInstance);
}
lastNewInstance = newInstance;
}
break;
case ODataReaderState.ResourceSetStart:
odataItemStack.Push(entryReader.Item);
break;
case ODataReaderState.ResourceSetEnd:
{
var childAnnotation = odataItemStack.Pop().GetAnnotation <ChildInstanceAnnotation>();
var parentNavLink = odataItemStack.Count > 0 ? odataItemStack.Peek() as ODataNestedResourceInfo : null;
if (parentNavLink != null)
{
// This feed belongs to a navigation property -
// propagate it up the tree for further processing.
AddChildInstanceAnnotations(parentNavLink, childAnnotation == null ? new object[0] : (childAnnotation.ChildInstances ?? new object[0]));
}
}
break;
case ODataReaderState.NestedResourceInfoStart:
{
odataItemStack.Push(entryReader.Item);
var nestedResourceInfo = (ODataNestedResourceInfo)entryReader.Item;
IEdmNavigationProperty navigationProperty = currentTargetEntitySet == null ? null : currentTargetEntitySet.EntityType().FindProperty(nestedResourceInfo.Name) as IEdmNavigationProperty;
// Current model implementation doesn't expose associations otherwise this would be much cleaner.
if (navigationProperty != null)
{
currentTargetEntitySet = this.DataSource.Model.EntityContainer.EntitySets().Single(s => s.EntityType() == navigationProperty.Type.Definition);
}
else
{
currentTargetEntitySet = null;
}
entityStack.Push(currentTargetEntitySet);
}
break;
case ODataReaderState.NestedResourceInfoEnd:
{
var navigationLink = (ODataNestedResourceInfo)entryReader.Item;
var childAnnotation = odataItemStack.Pop().GetAnnotation <ChildInstanceAnnotation>();
if (childAnnotation != null)
{
// Propagate the bound entries to the parent entry.
AddBoundNavigationPropertyAnnotation(odataItemStack.Peek(), navigationLink, childAnnotation == null ? new object[0] : childAnnotation.ChildInstances);
}
entityStack.Pop();
currentTargetEntitySet = entityStack.Peek();
}
break;
}
}
}
return(lastNewInstance);
}