/// <summary>
/// Gets the audit property.
/// </summary>
/// <param name="relation">The relation.</param>
/// <returns></returns>
private TAuditProperty GetAuditProperty(System.Data.Entity.Core.Objects.DataClasses.IRelatedEnd relation)
{
Helpers.ThrowIfNull(relation != null, "relation");
string relationName = relation.RelationshipSet.Name;
string propertyName = string.Empty;
// check our list
TAuditProperty auditProperty = this.currentAuditProperties.FirstOrDefault(ap => ap.EntityName == relationName && ap.PropertyName == propertyName && ap.IsRelation == true);
if (auditProperty == null)
{
// check the database
auditProperty = this.AuditProperties.FirstOrDefault(ap => ap.EntityName == relationName && ap.PropertyName == propertyName && ap.IsRelation == true);
if (auditProperty == null)
{
// create it
auditProperty = new TAuditProperty()
{
EntityName = relationName, PropertyName = propertyName, PropertyType = string.Empty, IsRelation = true
};
}
this.currentAuditProperties.Add(auditProperty);
}
return(auditProperty);
}
/// <summary>
/// Gets the audit property.
/// </summary>
/// <param name="relation">The relation.</param>
/// <returns></returns>
private AuditProperty GetAuditProperty(System.Data.Entity.Core.Objects.DataClasses.IRelatedEnd relation)
{
Contract.Requires <ArgumentNullException>(relation != null, "relation");
Contract.Ensures(Contract.Result <AuditProperty>() != null);
string relationName = relation.RelationshipSet.Name;
string propertyName = string.Empty;
// check our list
AuditProperty auditProperty = this.currentAuditProperties.FirstOrDefault(ap => ap.EntityName == relationName && ap.PropertyName == propertyName && ap.IsRelation == true);
if (auditProperty == null)
{
// check the database
auditProperty = this.AuditProperties.FirstOrDefault(ap => ap.EntityName == relationName && ap.PropertyName == propertyName && ap.IsRelation == true);
if (auditProperty == null)
{
// create it
auditProperty = new AuditProperty()
{
EntityName = relationName, PropertyName = propertyName, PropertyType = string.Empty, IsRelation = true
};
}
this.currentAuditProperties.Add(auditProperty);
}
return(auditProperty);
}
/// <summary>
/// Creates the audit delete relation records.
/// </summary>
private void CreateAuditDeleteRelationRecords()
{
// audit deleted relationships
var deletedRelations = ((IObjectContextAdapter)this).ObjectContext.ObjectStateManager.GetObjectStateEntries(System.Data.Entity.EntityState.Deleted).Where(ose => ose.IsRelationship);
foreach (var item in deletedRelations)
{
try
{
ObjectStateEntry parentEntry = GetEntityEntryFromRelation(item, 0);
ObjectStateEntry childEntry;
IAuditable <TKey> parent = parentEntry.Entity as IAuditable <TKey>;
if (parent != null)
{
IAuditable <TKey> child;
// Find representation of the relation
System.Data.Entity.Core.Objects.DataClasses.IRelatedEnd relatedEnd = parentEntry.RelationshipManager.GetAllRelatedEnds().First(r => r.RelationshipSet == item.EntitySet);
childEntry = GetEntityEntryFromRelation(item, 1);
child = childEntry.Entity as IAuditable <TKey>;
if (child != null)
{
try
{
TAuditProperty auditProperty = GetAuditProperty(relatedEnd);
TAuditItem auditItem = new TAuditItem()
{
Audit = this.currentAudit, AuditProperty = auditProperty, Entity1 = parent, Entity2 = child, OperationType = "-", OldValue = string.Empty, NewValue = string.Empty
};
this.currentAuditItems.Add(auditItem);
}
catch (Exception ex)
{
// TODO: log the error?
System.Diagnostics.Debug.WriteLine("Error auditing a delete relation: " + ex.Message);
}
}
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("Error auditing remove relation: " + ex.Message);
}
}
}