private static void SnapExpandedEntry(List <DeltaSnapshotEntry> results, object element, IEdmNavigationSource edmParent, IEnumerable <ExpandedNavigationSelectItem> expandedNavigationItems, string parentId)
{
foreach (var navigationProperty in ((IEdmEntityType)EdmClrTypeUtils.GetEdmType(DataSourceManager.GetCurrentDataSource().Model, element)).NavigationProperties())
{
var expandedNavigationItem = GetExpandedNavigationItem(expandedNavigationItems, navigationProperty.Name);
if (expandedNavigationItem != null)
{
bool isCollection = navigationProperty.Type.IsCollection();
ExpandSelectItemHandler expandItemHandler = new ExpandSelectItemHandler(element);
expandedNavigationItem.HandleWith(expandItemHandler);
var propertyValue = expandItemHandler.ExpandedChildElement;
if (propertyValue != null)
{
IEdmNavigationSource targetSource = edmParent.FindNavigationTarget(navigationProperty);
if (isCollection)
{
SnapResults(results, propertyValue as IEnumerable, targetSource as IEdmEntitySetBase, expandedNavigationItem.SelectAndExpand, parentId, navigationProperty.Name);
}
else
{
SnapResult(results, propertyValue, targetSource, expandedNavigationItem.SelectAndExpand, parentId, navigationProperty.Name);
}
}
}
}
}
private static void SnapExpandedEntry(List<DeltaSnapshotEntry> results, object element, IEdmNavigationSource edmParent, IEnumerable<ExpandedNavigationSelectItem> expandedNavigationItems, string parentId)
{
foreach (var navigationProperty in ((IEdmEntityType)EdmClrTypeUtils.GetEdmType(DataSourceManager.GetCurrentDataSource().Model, element)).NavigationProperties())
{
var expandedNavigationItem = GetExpandedNavigationItem(expandedNavigationItems, navigationProperty.Name);
if (expandedNavigationItem != null)
{
bool isCollection = navigationProperty.Type.IsCollection();
ExpandSelectItemHandler expandItemHandler = new ExpandSelectItemHandler(element);
expandedNavigationItem.HandleWith(expandItemHandler);
var propertyValue = expandItemHandler.ExpandedChildElement;
if (propertyValue != null)
{
IEdmNavigationSource targetSource = edmParent.FindNavigationTarget(navigationProperty);
if (isCollection)
{
SnapResults(results, propertyValue as IEnumerable, targetSource as IEdmEntitySetBase, expandedNavigationItem.SelectAndExpand, parentId, navigationProperty.Name);
}
else
{
SnapResult(results, propertyValue, targetSource, expandedNavigationItem.SelectAndExpand, parentId, navigationProperty.Name);
}
}
}
}
}
/// <summary>
/// Writes an OData entry.
/// </summary>
/// <param name="writer">The ODataWriter that will write the entry.</param>
/// <param name="element">The item from the data store to write.</param>
/// <param name="navigationSource">The navigation source in the model that the entry belongs to.</param>
/// <param name="model">The data store model.</param>
/// <param name="targetVersion">The OData version this segment is targeting.</param>
/// <param name="selectExpandClause">The SelectExpandClause.</param>
public static void WriteEntry(ODataWriter writer, object element, IEdmNavigationSource entitySource, ODataVersion targetVersion, SelectExpandClause selectExpandClause, Dictionary<string, string> incomingHeaders = null)
{
var entry = ODataObjectModelConverter.ConvertToODataEntry(element, entitySource, targetVersion);
entry.ETag = Utility.GetETagValue(element);
if (selectExpandClause != null && selectExpandClause.SelectedItems.OfType<PathSelectItem>().Any())
{
ExpandSelectItemHandler selectItemHandler = new ExpandSelectItemHandler(entry);
foreach (var item in selectExpandClause.SelectedItems.OfType<PathSelectItem>())
{
item.HandleWith(selectItemHandler);
}
entry = selectItemHandler.ProjectedEntry;
}
CustomizeEntry(incomingHeaders, entry);
writer.WriteStart(entry);
// gets all of the expandedItems, including ExpandedRefernceSelectItem and ExpandedNavigationItem
var expandedItems = selectExpandClause == null ? null : selectExpandClause.SelectedItems.OfType<ExpandedReferenceSelectItem>();
WriteNavigationLinks(writer, element, entry.ReadLink, entitySource, targetVersion, expandedItems);
writer.WriteEnd();
}
/// <summary>
/// Writes an OData entry.
/// </summary>
/// <param name="writer">The ODataWriter that will write the entry.</param>
/// <param name="element">The item from the data store to write.</param>
/// <param name="navigationSource">The navigation source in the model that the entry belongs to.</param>
/// <param name="model">The data store model.</param>
/// <param name="targetVersion">The OData version this segment is targeting.</param>
/// <param name="selectExpandClause">The SelectExpandClause.</param>
public static void WriteEntry(ODataWriter writer, object element, IEdmNavigationSource entitySource, ODataVersion targetVersion, SelectExpandClause selectExpandClause, Dictionary <string, string> incomingHeaders = null)
{
var entry = ODataObjectModelConverter.ConvertToODataEntry(element, entitySource, targetVersion);
entry.ETag = Utility.GetETagValue(element);
if (selectExpandClause != null && selectExpandClause.SelectedItems.OfType <PathSelectItem>().Any())
{
ExpandSelectItemHandler selectItemHandler = new ExpandSelectItemHandler(entry);
foreach (var item in selectExpandClause.SelectedItems.OfType <PathSelectItem>())
{
item.HandleWith(selectItemHandler);
}
entry = selectItemHandler.ProjectedEntry;
}
CustomizeEntry(incomingHeaders, entry);
writer.WriteStart(entry);
// gets all of the expandedItems, including ExpandedRefernceSelectItem and ExpandedNavigationItem
var expandedItems = selectExpandClause == null ? null : selectExpandClause.SelectedItems.OfType <ExpandedReferenceSelectItem>();
WriteNavigationLinks(writer, element, entry.ReadLink, entitySource, targetVersion, expandedItems);
writer.WriteEnd();
}
private static void WriteNavigationLinks(ODataWriter writer, object element, Uri parentEntryUri, IEdmNavigationSource edmParent, ODataVersion targetVersion, IEnumerable <ExpandedNavigationSelectItem> expandedNavigationItems)
{
foreach (var navigationProperty in ((IEdmEntityType)EdmClrTypeUtils.GetEdmType(DataSourceManager.GetCurrentDataSource().Model, element)).NavigationProperties())
{
var expandedNavigationItem = GetExpandedNavigationItem(expandedNavigationItems, navigationProperty.Name);
// For Atom, we always manually write out the links for the navigation properties off of the entity type
// Or if the navigation is expanded, we manually write out the links for the navigation properties along with the expanded entries
if (writer.GetType().Name != "ODataJsonLightWriter" || expandedNavigationItem != null)
{
bool isCollection = navigationProperty.Type.IsCollection();
var navigationLink = new ODataNavigationLink
{
IsCollection = isCollection,
Name = navigationProperty.Name,
};
if (writer.GetType().Name == "ODataAtomWriter")
{
//If the passed in parentEntryUri is null then exception will be thrown, to avoid this, create a relative 'potato' Uri.
navigationLink.Url = (parentEntryUri == null) ? new Uri("potato", UriKind.Relative) : new Uri(new Uri(parentEntryUri.AbsoluteUri + "/"), navigationProperty.Name);
}
writer.WriteStart(navigationLink);
if (expandedNavigationItem != null)
{
ExpandSelectItemHandler expandItemHandler = new ExpandSelectItemHandler(element);
expandedNavigationItem.HandleWith(expandItemHandler);
var propertyValue = expandItemHandler.ExpandedChildElement;
if (propertyValue != null)
{
IEdmNavigationSource targetSource = edmParent.FindNavigationTarget(navigationProperty);
if (isCollection)
{
long?count = null;
var collectionValue = propertyValue as IEnumerable;
if (collectionValue != null && expandedNavigationItem.CountOption == true)
{
count = collectionValue.Cast <object>().LongCount();
}
WriteFeed(writer, collectionValue, targetSource as IEdmEntitySetBase, targetVersion, expandedNavigationItem.SelectAndExpand, count, null, null);
}
else
{
WriteEntry(writer, propertyValue, targetSource, targetVersion, expandedNavigationItem.SelectAndExpand);
}
}
}
writer.WriteEnd();
}
}
}
private static void WriteNavigationLinks(ODataWriter writer, object element, Uri parentEntryUri, IEdmNavigationSource edmParent, ODataVersion targetVersion, IEnumerable<SelectItem> expandedItems)
{
foreach (var navigationProperty in ((IEdmEntityType)EdmClrTypeUtils.GetEdmType(DataSourceManager.GetCurrentDataSource().Model, element)).NavigationProperties())
{
// give proprity to ExpandedReferenceSelectItem
var expandedItem = GetExpandedReferenceItem(expandedItems, navigationProperty.Name);
if (expandedItem == null)
{
expandedItem = GetExpandedNavigationItem(expandedItems, navigationProperty.Name);
}
// For Atom, we always manually write out the links for the navigation properties off of the entity type
// Or if the navigation is expanded, we manually write out the links for the navigation properties along with the expanded entries
if (writer.GetType().Name != "ODataJsonLightWriter" || expandedItem != null)
{
bool isCollection = navigationProperty.Type.IsCollection();
var navigationLink = new ODataNavigationLink
{
IsCollection = isCollection,
Name = navigationProperty.Name,
};
if (writer.GetType().Name == "ODataAtomWriter")
{
//If the passed in parentEntryUri is null then exception will be thrown, to avoid this, create a relative 'potato' Uri.
navigationLink.Url = (parentEntryUri == null) ? new Uri("potato", UriKind.Relative) : new Uri(new Uri(parentEntryUri.AbsoluteUri + "/"), navigationProperty.Name);
}
writer.WriteStart(navigationLink);
if (expandedItem != null)
{
ExpandSelectItemHandler expandItemHandler = new ExpandSelectItemHandler(element);
expandedItem.HandleWith(expandItemHandler);
var propertyValue = expandItemHandler.ExpandedChildElement;
if (propertyValue != null)
{
IEdmNavigationSource targetSource = edmParent.FindNavigationTarget(navigationProperty);
if (isCollection)
{
long? count = null;
var collectionValue = propertyValue as IEnumerable;
if (collectionValue != null && expandedItem.CountOption == true)
{
count = collectionValue.Cast<object>().LongCount();
}
if (expandedItem.GetType() == typeof(ExpandedReferenceSelectItem))
{
WriteReferenceLinks(writer, collectionValue, targetSource as IEdmEntitySetBase, targetVersion, navigationLink);
}
else
{
WriteFeed(writer, collectionValue, targetSource as IEdmEntitySetBase, targetVersion, ((ExpandedNavigationSelectItem)expandedItem).SelectAndExpand, count, null, null);
}
}
else
{
if (expandedItem.GetType() == typeof(ExpandedReferenceSelectItem))
{
WriteReferenceLink(writer, propertyValue, targetSource, targetVersion, navigationLink);
}
else
{
WriteEntry(writer, propertyValue, targetSource, targetVersion, ((ExpandedNavigationSelectItem)expandedItem).SelectAndExpand);
}
}
}
}
writer.WriteEnd();
}
}
}