public Difference PerformDiff(object newObj, object oldObj, string propName, Type type, Func<object, object, string, Type, Difference> diffChildCallback)
{
var newArray = newObj == null ? new List<object>() : (newObj as IEnumerable).Cast<object>().ToList();
var oldArray = oldObj == null ? new List<object>() : (oldObj as IEnumerable).Cast<object>().ToList();
var sameObjectComparer = new HashCodeEqualityComparer();
var parentDifference = new Difference(propName, newObj, oldObj)
{
ChildDiffs = newArray.Union(oldArray).Distinct(sameObjectComparer)
.Select(elem => new
{
newItem = newArray.FirstOrDefault(x => sameObjectComparer.Equals(x, elem)),
oldItem = oldArray.FirstOrDefault(x => sameObjectComparer.Equals(x, elem))
})
.Select(
change =>
diffChildCallback(change.newItem, change.oldItem, "Item", GetEnumerableElementType(type)))
.Where(d => d != null)
.ToList()
};
// assume arrays are the same if there are no child differences
return parentDifference.ChildDiffs.Any() ? parentDifference : null;
}
public Difference PerformDiff(object newObj, object oldObj, string propName, Type type, Func <object, object, string, Type, Difference> diffChildCallback)
{
var newArray = newObj == null ? new List <object>() : (newObj as IEnumerable).Cast <object>().ToList();
var oldArray = oldObj == null ? new List <object>() : (oldObj as IEnumerable).Cast <object>().ToList();
var sameObjectComparer = new HashCodeEqualityComparer();
var parentDifference = new Difference(propName, newObj, oldObj)
{
ChildDiffs = newArray.Union(oldArray).Distinct(sameObjectComparer)
.Select(elem => new
{
newItem = newArray.FirstOrDefault(x => sameObjectComparer.Equals(x, elem)),
oldItem = oldArray.FirstOrDefault(x => sameObjectComparer.Equals(x, elem))
})
.Select(
change =>
diffChildCallback(change.newItem, change.oldItem, "Item", GetEnumerableElementType(type)))
.Where(d => d != null)
.ToList()
};
// assume arrays are the same if there are no child differences
return(parentDifference.ChildDiffs.Any() ? parentDifference : null);
}
