/// <summary>
/// Build a segment to predicate mapper
/// </summary>
/// <param name="propertyInfo"></param>
/// <returns></returns>
public virtual IRelativeRouteToPredicateMapper BuildMapper(PropertyInfo propertyInfo)
{
if (propertyInfo.PropertyType == typeof(DateTime))
{
return(new RouteDateSegmentAttribute.DateUrlSegmentMapper(DateSegmentFormat.YearMonthDay));
}
if (propertyInfo.GetCustomAttributes <ForeignKeyAttribute>().Any())
{
var foreignKeyInfo = DataReferenceFacade.GetForeignKeyProperties(propertyInfo.DeclaringType)
.FirstOrDefault(p => p.SourcePropertyName == propertyInfo.Name);
if (foreignKeyInfo != null)
{
var targetType = foreignKeyInfo.TargetType;
var dataTypeMapper = AttributeBasedRoutingHelper.GetPredicateMapper(targetType);
if (dataTypeMapper != null)
{
var typeConst = typeof(DataReferenceRelativeRouteToPredicateMapper <,>)
.MakeGenericType(targetType, foreignKeyInfo.SourcePropertyInfo.PropertyType)
.GetConstructors().Single();
return((IRelativeRouteToPredicateMapper)typeConst.Invoke(new object[] { dataTypeMapper }));
}
}
}
var type = typeof(DefaultRelativeRouteToPredicateMapper <>).MakeGenericType(propertyInfo.PropertyType);
var constructor = type.GetConstructor(new Type[0]);
return(constructor.Invoke(null) as IRelativeRouteToPredicateMapper);
}
private void Delete <T>(IEnumerable <T> dataset, bool suppressEventing, CascadeDeleteType cascadeDeleteType, bool referencesFromAllScopes, HashSet <DataSourceId> dataPendingDeletion)
where T : class, IData
{
Verify.ArgumentNotNull(dataset, nameof(dataset));
dataset = dataset.Evaluate();
foreach (var data in dataset)
{
var dataSourceId = data.DataSourceId;
if (!dataPendingDeletion.Contains(dataSourceId))
{
dataPendingDeletion.Add(dataSourceId);
}
}
if (cascadeDeleteType != CascadeDeleteType.Disable)
{
foreach (IData data in dataset)
{
Verify.ArgumentCondition(data != null, nameof(dataset), "dataset may not contain nulls");
Type interfaceType = data.DataSourceId.InterfaceType;
// Not deleting references if the data is versioned and not all of the
// versions of the element are to be deleted
if (data is IVersioned && interfaceType.GetKeyProperties().Count == 1)
{
var key = data.GetUniqueKey();
var versions = DataFacade.TryGetDataVersionsByUniqueKey(interfaceType, key).ToList();
if (versions.Count > 1 &&
(dataset.Count() < versions.Count ||
!versions.All(v => dataPendingDeletion.Contains(v.DataSourceId))))
{
continue;
}
}
using (new DataScope(data.DataSourceId.DataScopeIdentifier))
{
var allReferences = DataReferenceFacade.GetRefereesInt(data, referencesFromAllScopes, (a, b) => true);
if (allReferences.Count == 0)
{
continue;
}
Verify.IsTrue(cascadeDeleteType != CascadeDeleteType.Disallow, "One of the given datas is referenced by one or more datas");
var optionalReferences = allReferences.Where(kvp => kvp.Item2.IsOptionalReference);
var notOptionalReferences = allReferences.Where(kvp => !kvp.Item2.IsOptionalReference &&
!dataPendingDeletion.Contains(kvp.Item1.DataSourceId)).Evaluate();
foreach (var reference in optionalReferences)
{
var referee = reference.Item1;
reference.Item2.SourcePropertyInfo.SetValue(referee, null, null);
DataFacade.Update(referee, false, true, false);
}
foreach (var refereeInfo in notOptionalReferences)
{
if (!refereeInfo.Item2.AllowCascadeDeletes)
{
throw new InvalidOperationException("One of the given data items is referenced by one or more data items that do not allow cascade delete.");
}
}
var toDelete = notOptionalReferences.Select(_ => _.Item1);
Delete <IData>(toDelete, suppressEventing, cascadeDeleteType, referencesFromAllScopes);
}
}
}
Dictionary <string, Dictionary <Type, List <IData> > > sortedDatas = dataset.ToDataProviderAndInterfaceTypeSortedDictionary();
foreach (KeyValuePair <string, Dictionary <Type, List <IData> > > providerPair in sortedDatas)
{
foreach (KeyValuePair <Type, List <IData> > interfaceTypePair in providerPair.Value)
{
DataProviderPluginFacade.Delete(providerPair.Key, interfaceTypePair.Value.Select(d => d.DataSourceId));
if (DataCachingFacade.IsTypeCacheable(interfaceTypePair.Key))
{
DataCachingFacade.RemoveFromCache(interfaceTypePair.Value);
}
}
}
if (!suppressEventing)
{
foreach (IData element in dataset)
{
DataEventSystemFacade.FireDataDeletedEvent(element.DataSourceId.InterfaceType, element);
}
}
}