public void InsertOrUpdateReadId <TKeyProperties, TValueProperties>(
IEnumerable <TEntityInterface> newItems,
Expression <Func <TEntityInterface, TKeyProperties> > keySelector,
Expression <Func <TEntityInterface, TValueProperties> > valueSelector)
{
var keyPropertiesHandler = new PropertySelectorExpression <TEntityInterface, TKeyProperties>(keySelector);
var valuePropertiesHandler = new PropertySelectorExpression <TEntityInterface, TValueProperties>(valueSelector);
foreach (var newItem in newItems)
{
var filterOld = keyPropertiesHandler.BuildComparisonPredicate(newItem);
TEntityInterface oldItem = Reflection.Where(this.Query(), filterOld).ToList().SingleOrDefault();
if (oldItem == null)
{
_logger.Trace(() => "Creating " + EntityName + " " + keyPropertiesHandler.ToString(newItem) + ".");
Save(new[] { newItem }, null, null);
}
else
{
newItem.ID = oldItem.ID;
var compareValue = valuePropertiesHandler.BuildComparisonPredicate(newItem);
bool same = compareValue.Compile().Invoke(oldItem);
if (!same)
{
// Copy value from newItem to oldItem (instead of simply saving newItem) to keep the old value of properties that are not covered with the given interfaces.
valuePropertiesHandler.Assign(oldItem, newItem);
Save(null, new[] { oldItem }, null);
_logger.Trace(() => "Updating " + EntityName + " " + keyPropertiesHandler.ToString(newItem) + ".");
}
else
{
_logger.Trace(() => "Already exists " + EntityName + " " + keyPropertiesHandler.ToString(newItem) + ".");
}
}
}
}
public void InsertOrReadId <TProperties>(
IEnumerable <TEntityInterface> newItems,
Expression <Func <TEntityInterface, TProperties> > keySelector)
{
var keySelectorHandler = new PropertySelectorExpression <TEntityInterface, TProperties>(keySelector);
foreach (var newItem in newItems)
{
var filterLoad = keySelectorHandler.BuildComparisonPredicate(newItem);
Guid id = Reflection.Where(this.Query(), filterLoad).Select(e => e.ID).FirstOrDefault();
if (id == default(Guid))
{
_logger.Trace(() => "Creating " + EntityName + " " + keySelectorHandler.ToString(newItem) + ".");
Save(new[] { newItem }, null, null);
}
else
{
_logger.Trace(() => "Already exists " + EntityName + " " + keySelectorHandler.ToString(newItem) + ".");
newItem.ID = id;
}
}
}