/// <summary>
/// Merges model collection properties. May be used in cases where DbContextReflector is unable to identify all collection properties
/// </summary>
/// <typeparam name="TProperty"></typeparam>
/// <param name="entity">Entity in the context</param>
/// <param name="model">Model that contains changes</param>
/// <param name="modelProperty"></param>
/// <param name="actionOnDelete"></param>
/// <param name="referencedEntityIsDependent"></param>
protected void MergeCollectionProperty <TProperty>(TModel entity, TModel model, Expression <Func <TModel, IList <TProperty> > > modelProperty,
System.Data.Entity.Core.Metadata.Edm.OperationAction actionOnDelete, bool referencedEntityIsDependent)
where TProperty : class
{
MemberExpression mex = (MemberExpression)modelProperty.Body;
PropertyInfo property = (PropertyInfo)mex.Member;
NavigationPropertyInfo propertyInfo = new NavigationPropertyInfo(property, actionOnDelete, referencedEntityIsDependent);
ICollectionPropertyUpdater <TModel> collectionPropertyUpdater = new CollectionPropertyUpdater <TModel>(DbContext, entity, collectionMerger);
collectionPropertyUpdater.UpdateCollection <TProperty>(reflector, propertyInfo, model, entity == model, navUpdater);
}
/*public void UpdateCollection(Expression<Func<TModel, IList<TCollectionEntry>>> property, object sourceModel)
* {
* MemberExpression mex = (MemberExpression)property.Body;
* UpdateCollection((PropertyInfo)mex.Member, sourceModel);
* }*/
public void UpdateCollection <TCollectionEntry>(IDbContextReflector reflector, NavigationPropertyInfo property,
object sourceModel, bool modelIsNew, IRecursiveEntityUpdater entityUpdater)
where TCollectionEntry : class
{
Reflector = reflector;
Property = property;
EntityUpdater = entityUpdater;
if (modelIsNew)
{
AddCollection((IList <TCollectionEntry>)property.PropertyInfo.GetValue(sourceModel));
}
else
{
UpdateCollection((IList <TCollectionEntry>)property.PropertyInfo.GetValue(Model),
(IList <TCollectionEntry>)property.PropertyInfo.GetValue(sourceModel));
}
}
private void SetEntityReferenceToNullOnTargetResourceMatch(object targetResource, NavigationPropertyInfo navigationPropertyInfo, object currentEntityInstance)
{
if (navigationPropertyInfo.PropertyInfo.GetValue(currentEntityInstance, null) == targetResource)
{
this.pendingChanges.Add(delegate {
navigationPropertyInfo.PropertyInfo.SetValue(currentEntityInstance, null, null);
});
}
}
private void RemoveResourceFromCollectionOnTargetResourceMatch(object targetResource, NavigationPropertyInfo navigationPropertyInfo, object currentEntityInstance)
{
IEnumerable childCollectionObject = navigationPropertyInfo.PropertyInfo.GetValue(currentEntityInstance, null) as IEnumerable;
if (childCollectionObject.Cast <object>().Any <object>(delegate(object o) {
return(o == targetResource);
}))
{
MethodInfo removeMethod = navigationPropertyInfo.PropertyInfo.PropertyType.GetMethod("Remove");
this.pendingChanges.Add(delegate {
removeMethod.Invoke(childCollectionObject, new object[] { targetResource });
});
}
}
