/// <summary>
/// Removes a whole tree under input, this is the 'inverse' of Clone but this is too slow for a whole Canton...
/// </summary>
public void Remove(IPocoBase input, IAgrideaService service)
{
if (input == null)
{
return;
}
var pocoType = ObjectContext.GetObjectType(input.GetType());
var pocoTypeName = pocoType.Name;
if (excludedPocos_.Contains(pocoType))
{
return;
}
if (input.GetType().IsReferenceEntity())
{
return;
}
if (deleted_.ContainsKey(input))
{
return;
}
Log.Verbose("CloningHelper.Remove ({0})", input);
deleted_.Add(input, true);
foreach (var referenceProperty in input.GetType().GetReferenceProperties())
{
var reference = referenceProperty.GetValue(input) as IPocoBase;
if (reference == null)
{
continue;
}
Remove(reference, service);
}
foreach (var collectionProperty in input.GetType().GetCollectionProperties())
{
var inputCollection = collectionProperty.GetValue(input) as IList;
if (inputCollection.Count == 0)
{
continue;
}
foreach (IPocoBase inputItem in new ArrayList(inputCollection)) //to avoid collection change during iteration
{
Remove(inputItem, service);
}
}
service.RemoveItem(input); //Must be at the end otherwise all relationships are cleared
}
private IQueryable <TPoco> GetQueryForDiscriminantProperties <TPoco>(IQueryable <TPoco> items, IPocoBase item) where TPoco : class, IPocoBase
{
var type = typeof(TPoco);
Asserts <InvalidOperationException> .IsTrue(item.HasDiscriminant(), String.Format("Poco {0} has no discriminant property", type.Name));
var discriminantProperties = type.GetRecursiveDiscriminantProperties();
var parameterExpression = Expression.Parameter(type, "item");
foreach (var discriminant in discriminantProperties)
{
Expression memberExpression = parameterExpression;
object value = null;
type = typeof(TPoco);
var curItem = item;
foreach (var propertyName in discriminant.Split('.'))
{
var pi = type.GetProperty(propertyName);
value = pi.GetValue(curItem, null);
memberExpression = Expression.Property(memberExpression, pi);
type = pi.PropertyType;
if (pi.PropertyType.IsReference())
{
curItem = value as PocoBase;
}
}
items = items.Where(Expression.Lambda <Func <TPoco, bool> >(
Expression.Equal(memberExpression, Expression.Constant(value)),
new[] { parameterExpression }));
}
return(items);
}
/// <summary>
/// Clones a whole tree under input.
/// ReferenceEntity are copied by ref, all others by values
/// Dicrimimants are changed to maintain UC, except when pragmatic condition is met
/// </summary>
public IPocoBase Clone(IPocoBase input, IAgrideaService service)
{
if (input == null)
{
return(null);
}
var pocoType = ObjectContext.GetObjectType(input.GetType());
var pocoTypeName = pocoType.Name;
if (excludedPocos_.Contains(pocoType))
{
return(null);
}
if (input.GetType().IsReferenceEntity())
{
return(input);
}
if (clones_.ContainsKey(input))
{
return(clones_[input]);
}
Log.Verbose("CloningHelper.Clone ({0})", input);
IPocoBase result = Activator.CreateInstance(input.GetType()) as IPocoBase;
result.CreatedBy = service.UserName;
result.CreationDate = DateTime.Now;
clones_.Add(input, result);
var discriminantProperties = input.GetType().GetPrimitiveDiscriminantProperties().ToList();
var generateNewDiscriminant = discriminantProperties.All(m => m.IsPrimitive() || discriminantProperties.Count() == 1);
foreach (var primitiveProperty in input.GetType().GetPrimitiveProperties())
{
var val = primitiveProperty.GetValue(input);
if (primitiveProperty.IsDiscriminant())
{
//bug for BankAccount Ccp Number and Iban => discriminant but potentially null
val = val is string && string.IsNullOrWhiteSpace(val.ToString()) ? "-" : val;
val = generateNewDiscriminant ? NextDicriminantValue(primitiveProperty, val) : val;
}
primitiveProperty.SetValue(result, val);
}
foreach (var referenceProperty in input.GetType().GetReferenceProperties())
{
var reference = referenceProperty.GetValue(input) as IPocoBase;
if (reference == null)
{
continue;
}
referenceProperty.SetValue(result, Clone(reference, service));
}
foreach (var collectionProperty in input.GetType().GetCollectionProperties())
{
var inputCollection = collectionProperty.GetValue(input) as IList;
if (inputCollection.Count == 0)
{
continue;
}
IList inputCollectionClone = Activator.CreateInstance(typeof(List <>).MakeGenericType(collectionProperty.PropertyType.GenericTypeArguments[0])) as IList;
collectionProperty.SetValue(result, inputCollectionClone);
foreach (IPocoBase inputItem in inputCollection)
{
inputCollectionClone.Add(Clone(inputItem, service));
}
}
return(result);
}
