/// <summary>
/// Compare directory level information from the two specified directory listings.
/// </summary>
public virtual void Compare(ref AdvancedDirectoryEntries entriesBef, ref AdvancedDirectoryEntries entriesAft)
{
SignalBeginProgress("Changes");
try
{
//Identify entries which are common to both before and after directory listings.
//This is accomplished using a LINQ query fashioned to implement an inner join.
List <AdvancedDirectoryEntry> innerEntries = (List <AdvancedDirectoryEntry>)(from b in entriesBef
join a in entriesAft
on new { b.StdDir, b.StdFile } equals new { a.StdDir, a.StdFile }
select new AdvancedDirectoryEntry(a.StdHlq, a.StdDir, a.StdFile, a.StdSize, a.StdDate, a.StdDate, b.StdDate, a.StdHlq, a.StdFile, b.StdHlq, b.StdFile, a.StdType, "BOTH")).ToList();
//Identify entries which have been deleted.
//This is accomplished using a LINQ query fashioned to implement a left join
//then selecting entries which only exist on the left side (before side) of the join.
List <AdvancedDirectoryEntry> deletedEntries = (List <AdvancedDirectoryEntry>)(from b in entriesBef
join a in entriesAft
on new { b.StdDir, b.StdFile } equals new { a.StdDir, a.StdFile }
into changes
from c in changes.DefaultIfEmpty(new AdvancedDirectoryEntry())
where c.CtlComparison == "EMPTY"
select new AdvancedDirectoryEntry(b.StdHlq, b.StdDir, b.StdFile, b.StdSize, b.StdDate, DateTime.MinValue, b.StdDate, this.targetHlq, b.StdFile, b.StdHlq, b.StdFile, b.StdType, "DELETED")).ToList();
//Identify entries which have been inserted.
//This is accomplished using a LINQ query fashioned to implement a left join
//then selecting entries which only exist on the left side (after side) of the join.
List <AdvancedDirectoryEntry> insertedEntries = (List <AdvancedDirectoryEntry>)(from a in entriesAft
join b in entriesBef
on new { a.StdDir, a.StdFile } equals new { b.StdDir, b.StdFile }
into changes
from c in changes.DefaultIfEmpty(new AdvancedDirectoryEntry())
where c.CtlComparison == "EMPTY"
select new AdvancedDirectoryEntry(a.StdHlq, a.StdDir, a.StdFile, a.StdSize, a.StdDate, a.StdDate, DateTime.MinValue, a.StdHlq, a.StdFile, this.targetHlq, a.StdFile, a.StdType, "INSERTED")).ToList();
//Reconstruct the before list.
entriesBef = new AdvancedDirectoryEntries();
entriesBef.AddRange(innerEntries);
entriesBef.AddRange(deletedEntries);
//Reconstruct the after list.
entriesAft = new AdvancedDirectoryEntries();
entriesAft.AddRange(innerEntries);
entriesAft.AddRange(insertedEntries);
}
catch (Exception oException)
{
System.Diagnostics.Debug.WriteLine(oException.Message);
}
finally
{
}
}
/// <summary>
/// Store details of changes to the specified change list.
/// </summary>
public void Changes(AdvancedDirectoryEntries entriesBef, AdvancedDirectoryEntries entriesAft, ref AdvancedDirectoryEntries entriesChg, ref long estimate)
{
estimate = 0;
try
{
AdvancedDirectoryEntries deletedEntries = new AdvancedDirectoryEntries((from b in entriesBef
where b.CtlComparison == "DELETED"
select b).ToList());
SignalUpdateProgress("Changes", 1);
AdvancedDirectoryEntries innerEntries = new AdvancedDirectoryEntries((from b in entriesBef
where b.CtlComparison == "BOTH"
select b).ToList());
SignalUpdateProgress("Changes", 1);
AdvancedDirectoryEntries insertedEntries = new AdvancedDirectoryEntries((from a in entriesAft
where a.CtlComparison == "INSERTED"
select a).ToList());
SignalUpdateProgress("Changes", 1);
entriesChg = new AdvancedDirectoryEntries();
entriesChg.AddRange(deletedEntries);
entriesChg.AddRange(innerEntries);
entriesChg.AddRange(insertedEntries);
SignalUpdateProgress("Changes", 1);
}
catch (OleDbException oException)
{
System.Diagnostics.Debug.WriteLine(oException.Errors[0].Message);
}
finally
{
}
SignalEndOfProgress("Changes");
//Generate comparisons collection.
GenerateComparisons(entriesChg, ref estimate);
}