/// <summary>
/// Binds key values to a key lookup on a collection.
/// </summary>
/// <param name="collectionNode">Already bound collection node.</param>
/// <param name="namedValues">The named value tokens to bind.</param>
/// <returns>The bound key lookup.</returns>
internal QueryNode BindKeyValues(EntityCollectionNode collectionNode, IEnumerable <NamedValue> namedValues)
{
DebugUtils.CheckNoExternalCallers();
Debug.Assert(namedValues != null, "namedValues != null");
Debug.Assert(collectionNode != null, "CollectionNode != null");
IEdmEntityTypeReference collectionItemType = collectionNode.EntityItemType;
List <KeyPropertyValue> keyPropertyValues = new List <KeyPropertyValue>();
IEdmEntityType collectionItemEntityType = collectionItemType.EntityDefinition();
HashSet <string> keyPropertyNames = new HashSet <string>(StringComparer.Ordinal);
foreach (NamedValue namedValue in namedValues)
{
KeyPropertyValue keyPropertyValue = this.BindKeyPropertyValue(namedValue, collectionItemEntityType);
Debug.Assert(keyPropertyValue != null, "keyPropertyValue != null");
Debug.Assert(keyPropertyValue.KeyProperty != null, "keyPropertyValue.KeyProperty != null");
if (!keyPropertyNames.Add(keyPropertyValue.KeyProperty.Name))
{
throw new ODataException(ODataErrorStrings.MetadataBinder_DuplicitKeyPropertyInKeyValues(keyPropertyValue.KeyProperty.Name));
}
keyPropertyValues.Add(keyPropertyValue);
}
if (keyPropertyValues.Count == 0)
{
// No key values specified, for example '/Customers()', do not include the key lookup at all
return(collectionNode);
}
else if (keyPropertyValues.Count != collectionItemEntityType.Key().Count())
{
throw new ODataException(ODataErrorStrings.MetadataBinder_NotAllKeyPropertiesSpecifiedInKeyValues(collectionNode.ItemType.ODataFullName()));
}
else
{
return(new KeyLookupNode(collectionNode, new ReadOnlyCollection <KeyPropertyValue>(keyPropertyValues)));
}
}