/// <summary> Initializes comparison from any two entries. </summary>
/// <param name="left">Left entry.</param>
/// <param name="right">Right entry.</param>
/// <returns>true if comparison of two entries by this trait can be performed; false otherwise.</returns>
protected override bool InitFromEntries(Entry left, Entry right)
{
LeftSize = left.Size;
RightSize = right.Size;
return true;
}
/// <summary> Initializes comparison from any two entries. </summary>
/// <param name="left">Left entry.</param>
/// <param name="right">Right entry.</param>
/// <returns>true if comparison of two entries by this trait can be performed; false otherwise.</returns>
protected virtual bool InitFromEntries(Entry left, Entry right)
{
return false;
}
/// <summary> Initializes comparison from any two entries. </summary>
/// <param name="left">Left entry.</param>
/// <param name="right">Right entry.</param>
/// <returns>true if comparison of two entries by this trait can be performed; false otherwise.</returns>
protected override bool InitFromEntries(Entry left, Entry right)
{
LeftParent = left.ParentFolder;
RightParent = right.ParentFolder;
return true;
}
/// <summary> Initializes comparison from any two entries. </summary>
/// <param name="left">Left entry.</param>
/// <param name="right">Right entry.</param>
/// <returns>true if comparison of two entries by this trait can be performed; false otherwise.</returns>
protected override bool InitFromEntries(Entry left, Entry right)
{
LeftLastModified = left.LastModified;
RightLastModified = right.LastModified;
return true;
}
/// <summary> Initializes comparison from any two entries. </summary>
/// <param name="left">Left entry.</param>
/// <param name="right">Right entry.</param>
/// <returns>true if comparison of two entries by this trait can be performed; false otherwise.</returns>
protected override bool InitFromEntries(Entry left, Entry right)
{
LeftEntryType = Entry.Type(left);
RightEntryType = Entry.Type(right);
return true;
}
/// <summary> Finds proeprty differences between entries. </summary>
/// <param name="left">'Left' entry.</param>
/// <param name="right">'Right' entry.</param>
public static IEnumerable<EntryTraitDifference> PropertiesDiff(Entry left, Entry right)
{
Contract.Requires(left != null);
Contract.Requires(right != null);
return Comparisons
.Select(cmpType => (EntryTraitDifference)Activator.CreateInstance(cmpType, left, right))
.Where(cmp => cmp != null && cmp.ComparisonExists && cmp.DifferenceExists);
}
internal void Add(Entry entry)
{
Contract.Requires(entry != null);
_contents.Add(entry);
}