public IDifferenceObject Compare(InfoBase target, InfoBase source)
{
IDifferenceObject root = new DifferenceObject(null, target, DifferenceType.None);
CompareLists <Namespace>(root, target.Namespaces.ToList(), source.Namespaces.ToList());
return(root);
}
private void AddTableChildren(IDifferenceObject difference)
{
Table target = (Table)difference.Target;
SetupTableParent(difference);
foreach (Field child in target.Fields)
{
DifferenceObject diff = new DifferenceObject(difference, child, difference.Difference);
SetupFieldParent(diff);
difference.Children.Add(diff);
}
}
private void AddPropertyChildren(IDifferenceObject difference)
{
Property target = (Property)difference.Target;
SetupPropertyParent(difference);
foreach (Relation child in target.Relations)
{
DifferenceObject diff = new DifferenceObject(difference, child, difference.Difference);
SetupRelationParent(diff);
difference.Children.Add(diff);
}
}
private void AddNamespaceChildren(IDifferenceObject difference)
{
Namespace target = (Namespace)difference.Target;
SetupNamespaceParent(difference);
foreach (Namespace child in target.Namespaces)
{
DifferenceObject diff = new DifferenceObject(difference, child, difference.Difference);
difference.Children.Add(diff);
AddNamespaceChildren(diff);
}
foreach (Entity child in target.Entities)
{
DifferenceObject diff = new DifferenceObject(difference, child, difference.Difference);
difference.Children.Add(diff);
AddEntityChildren(diff);
}
}
private void AddEntityChildren(IDifferenceObject difference)
{
Entity target = (Entity)difference.Target;
SetupEntityParent(difference);
foreach (Property child in target.Properties)
{
DifferenceObject diff = new DifferenceObject(difference, child, difference.Difference);
difference.Children.Add(diff);
AddPropertyChildren(diff);
}
foreach (Entity child in target.NestedEntities)
{
DifferenceObject diff = new DifferenceObject(difference, child, difference.Difference);
difference.Children.Add(diff);
AddEntityChildren(diff);
}
foreach (Table child in target.Tables)
{
DifferenceObject diff = new DifferenceObject(difference, child, difference.Difference);
difference.Children.Add(diff);
AddTableChildren(diff);
}
}
private void CompareLists <T>(IDifferenceObject parent, List <T> target_list, List <T> source_list)
where T : IPersistent, IComparable
{
int target_count = target_list.Count();
int source_count = source_list.Count();
int target_index = 0;
int source_index = 0;
int compareResult;
if (target_count == 0 && source_count == 0)
{
return;
}
target_list.Sort();
source_list.Sort();
while (target_index < target_count)
{
if (source_index < source_count)
{
compareResult = target_list[target_index].CompareTo(source_list[source_index]);
if (compareResult < 0)
{
DifferenceObject difference = new DifferenceObject(parent, target_list[target_index], DifferenceType.Delete);
parent.Children.Add(difference);
SetUpdateDifferenceType(parent);
AddChildren(difference);
target_index++;
}
else if (compareResult == 0)
{
DifferenceObject difference = new DifferenceObject(parent, target_list[target_index], DifferenceType.None);
CompareListItems(difference, target_list[target_index], source_list[source_index]);
if (difference.Difference == DifferenceType.Update)
{
parent.Children.Add(difference);
}
target_index++;
source_index++;
}
else
{
DifferenceObject difference = new DifferenceObject(parent, source_list[source_index], DifferenceType.Insert);
parent.Children.Add(difference);
SetUpdateDifferenceType(parent);
AddChildren(difference);
source_index++;
}
}
else
{
DifferenceObject difference = new DifferenceObject(parent, target_list[target_index], DifferenceType.Delete);
parent.Children.Add(difference);
SetUpdateDifferenceType(parent);
AddChildren(difference);
target_index++;
}
}
while (source_index < source_count)
{
DifferenceObject difference = new DifferenceObject(parent, source_list[source_index], DifferenceType.Insert);
parent.Children.Add(difference);
SetUpdateDifferenceType(parent);
AddChildren(difference);
source_index++;
}
}