bool IsHasManyThrough(KeyValuePair <RelationshipProxy, IEnumerable> kvp,
out IEnumerable entities,
out RelationshipProxy proxy)
{
proxy = kvp.Key;
entities = (kvp.Value);
return(kvp.Key.Attribute is HasManyThroughAttribute);
}
/// <summary>
/// Parses all relationships from <paramref name="type"/> to
/// other models in the resource resourceGraphs by constructing RelationshipProxies .
/// </summary>
/// <param name="type">The type to parse</param>
private void RegisterRelationshipProxies(RightType type)
{
foreach (RelationshipAttribute attr in _resourceGraph.GetRelationships(type))
{
if (!attr.CanInclude)
{
continue;
}
if (!_relationshipProxies.TryGetValue(attr, out _))
{
RightType rightType = GetRightTypeFromRelationship(attr);
bool isContextRelation = false;
var relationshipsToUpdate = _targetedFields.Relationships;
if (relationshipsToUpdate != null)
{
isContextRelation = relationshipsToUpdate.Contains(attr);
}
var proxy = new RelationshipProxy(attr, rightType, isContextRelation);
_relationshipProxies[attr] = proxy;
}
}
}
/// <summary>
/// Reflective helper method to create an instance of <see cref="RelationshipGroup{TRight}"/>;
/// </summary>
private IRelationshipGroup CreateRelationshipGroupInstance(Type thisLayerType, RelationshipProxy proxy, List <IIdentifiable> leftEntities, List <IIdentifiable> rightEntities)
{
var rightEntitiesHashed = TypeHelper.CreateInstanceOfOpenType(typeof(HashSet <>), thisLayerType, rightEntities.Cast(thisLayerType));
return((IRelationshipGroup)TypeHelper.CreateInstanceOfOpenType(typeof(RelationshipGroup <>),
thisLayerType, proxy, new HashSet <IIdentifiable>(leftEntities), rightEntitiesHashed));
}
private void AddToRelationshipGroup(Dictionary <RelationshipProxy, List <IIdentifiable> > target, RelationshipProxy proxy, IEnumerable <IIdentifiable> newEntities)
{
if (!target.TryGetValue(proxy, out List <IIdentifiable> entities))
{
entities = new List <IIdentifiable>();
target[proxy] = entities;
}
entities.AddRange(newEntities);
}
public RelationshipGroup(RelationshipProxy proxy, HashSet <IIdentifiable> leftEntities, HashSet <TRight> rightEntities)
{
Proxy = proxy;
LeftEntities = leftEntities;
RightEntities = rightEntities;
}
public RelationshipGroup(RelationshipProxy proxy, HashSet <IIdentifiable> principalEntities, HashSet <TDependent> dependentEntities)
{
Proxy = proxy;
PrincipalEntities = principalEntities;
DependentEntities = dependentEntities;
}