/// <summary>
/// Adds an item to the <see cref="T:System.Collections.Generic.ICollection`1"></see>.
/// </summary>
/// <param name="item">The object to add to the <see cref="T:System.Collections.Generic.ICollection`1"></see>.</param>
internal void Add(DataPage item)
{
item.Parent = this;
DateTime.Now.GetTimestamp();
item.Children = new DataPageCollection(Parent, ChangeSetHelper, DatabaseHelper);
_internalList.Add(item);
var exists = _internalNameList.TryGetValue(item.SchemaName, out var subList);
if (!exists)
{
subList = new List <string>();
_internalNameList.Add(item.SchemaName, subList);
}
subList?.Add(item.Name);
Dirty = true;
ChangeSetHelper.AddChange(ChangeSet.Insert(item));
}
/// <summary>
/// Deletes the first occurrence of a specific object from the
/// <see cref="T:System.Collections.Generic.ICollection`1"></see>.
/// </summary>
/// <param name="item">The object to remove from the <see cref="T:System.Collections.Generic.ICollection`1"></see>.</param>
/// <returns>
/// true if <paramref name="item">item</paramref> was successfully removed from the
/// <see cref="T:System.Collections.Generic.ICollection`1"></see>; otherwise, false. This method also returns false if
/// <paramref name="item">item</paramref> is not found in the original
/// <see cref="T:System.Collections.Generic.ICollection`1"></see>.
/// </returns>
internal bool Delete(DataPage item)
{
var itemRemoveResult = _internalList.Remove(item);
_internalNameList.TryGetValue(item.SchemaName, out var nameListFiltered);
var nameListRemoveResult = nameListFiltered?.Remove(item.Name);
if (itemRemoveResult && nameListRemoveResult.HasValue && nameListRemoveResult.Value)
{
Dirty = true;
ChangeSetHelper.AddChange(ChangeSet.Delete(item));
}
if (nameListFiltered?.Count == 0)
{
_internalNameList.Remove(item.SchemaName);
}
return(itemRemoveResult && nameListRemoveResult.HasValue && nameListRemoveResult.Value);
}