protected override void ImportCore(IEnumerable <IImportItem> items)
{
using (PersistenceScope scope = new PersistenceScope(PersistenceContextType.Update))
{
IUpdateContext context = (IUpdateContext)PersistenceScope.CurrentContext;
context.ChangeSetRecorder.OperationName = this.GetType().FullName;
IMetadataBroker metaBroker = context.GetBroker <IMetadataBroker>();
IEnumBroker enumBroker = context.GetBroker <IEnumBroker>();
IList <Type> enumClasses = metaBroker.ListEnumValueClasses();
foreach (IImportItem item in items)
{
EnumerationData data = (EnumerationData)Read(item.Read(), typeof(EnumerationData));
// find the enum class
Type enumClass = CollectionUtils.SelectFirst(enumClasses,
delegate(Type ec)
{
return(ec.FullName == data.EnumerationClass);
});
if (enumClass == null)
{
Platform.Log(LogLevel.Error, string.Format("{0} is not a valid enumeration class name.", data.EnumerationClass));
continue;
}
IList <EnumValue> existingValues = enumBroker.Load(enumClass, true);
foreach (EnumerationMemberData md in data.Members)
{
// check if a conflicting value exists
// (this can happen if there is existing data in the db with the same value but different code)
EnumValue conflict = CollectionUtils.SelectFirst(existingValues,
delegate(EnumValue v) { return(v.Code != md.Code && v.Value == md.Value); });
if (conflict != null)
{
Platform.Log(LogLevel.Error, string.Format("{0} value {1} conflicts with existing value {2} and will not be imported.",
data.EnumerationClass, md.Code, conflict.Code));
continue;
}
// check if the value already exists
EnumValue value = CollectionUtils.SelectFirst(existingValues,
delegate(EnumValue v) { return(v.Code == md.Code); });
if (value == null)
{
// value does not exist - add it
value = enumBroker.AddValue(enumClass, md.Code, md.Value, md.Description, md.DisplayOrder, md.Deactivated);
existingValues.Add(value);
}
else
{
// value exists - update it
enumBroker.UpdateValue(enumClass, md.Code, md.Value, md.Description, md.DisplayOrder, md.Deactivated);
}
}
context.SynchState();
}
scope.Complete();
}
}