internal SnapshotBuilder(Snapshot snapshot, SnapshotCollection collection)
{
_snapshot = snapshot;
_collection = collection;
}
public static void Report(Output output, List <NamedTimeRange> ranges, Snapshot before, Snapshot after, SnapshotDifferences snapshotDifferences)
{
bool HasDate(RowDifference rowDifference, FieldDifference fieldDifference)
{
var isDate = fieldDifference.After?.GetType() == typeof(DateTime) ||
fieldDifference.Before?.GetType() == typeof(DateTime);
if (isDate)
{
return(true);
}
var beforeOriginal = rowDifference.Before?.GetField(fieldDifference.Name);
var afterOriginal = rowDifference.After?.GetField(fieldDifference.Name);
var isSubstitutedDate = beforeOriginal?.GetType() == typeof(DateTime) ||
afterOriginal?.GetType() == typeof(DateTime);
return(isSubstitutedDate);
}
output.WrapLine("====> Date diagnostics begin");
output.FormatTable(ranges.Select(r => new { Snapshot = r.Name, r.Start, r.End }), title: "Snapshot date ranges");
var tablesThatHaveDateDifferences = snapshotDifferences
.TableDifferences
.Select(t => new
{
t.TableDefinition, //For a table
Diffs = t.RowDifferences.Select(r => new
{
RowDifference = r, //Each set of differences for an individual row
DateDiffs = r.Differences.Differences
.Where(d => HasDate(r, d)).ToList() //and whichever of the differences includes a date
})
.Where(d => d.DateDiffs.Any()) //but only if there is at least one date difference
.ToList()
})
.Where(t => t.Diffs.Any()) //but only tables where there are dates in the row differences
.ToList(); //so now we have a list of tables that have row differences (with dates), and their actual rows that contain the date differences
var cols = tablesThatHaveDateDifferences.SelectMany(t => t.Diffs.SelectMany(d => d.DateDiffs.Select(dd => dd.Name))).Distinct();
var keyCols = tablesThatHaveDateDifferences.SelectMany(t => t.Diffs.SelectMany(d => d.RowDifference.Key.GetFieldNames())).Distinct();
var rep = tablesThatHaveDateDifferences
.AsReport(r => r.Title("Dates From Difference Set")
.AddColumn(t => t.TableDefinition.TableName)
.AddChild(t => t.Diffs, crep =>
{
crep.RemoveBufferLimit();
foreach (var keyCol in keyCols)
{
crep.AddColumn(crep.Lambda(cr => GetKeyValue(keyCol, cr.RowDifference)),
cc => cc.Heading(keyCol));
}
foreach (var col in cols)
{
crep.AddColumn(crep.Lambda(cr => GetDateValue(col, cr.DateDiffs, cr.RowDifference, true)),
cc => cc.Heading($"{col} Before"));
crep.AddColumn(crep.Lambda(cr => GetDateValue(col, cr.DateDiffs, cr.RowDifference, false)),
cc => cc.Heading($"{col} After"));
}
}));
output.WriteLine();
output.FormatTable(rep);
output.WrapLine("====> Date diagnostics end");
}
internal static SnapshotDifferences ExtractDifferences(SnapshotCollection collection, Snapshot before, Snapshot after, ChangeReportOptions changeReportOptions = ChangeReportOptions.Default)
{
var tableDiffs = SnapshotDifferenceCalculator.GetDifferences(collection, before, after);
tableDiffs = SnapshotDifferenceSorter.SortDifferences(collection, tableDiffs);
tableDiffs = DifferenceRegulator.CleanDifferences(collection, tableDiffs, before, (changeReportOptions & ChangeReportOptions.NoSubs) == 0);
return(new SnapshotDifferences(tableDiffs));
}
public static List <SnapshotTableDifferences> RequireColumns(SnapshotCollection collection, List <SnapshotTableDifferences> diffs, TableDefinition table, IEnumerable <string> requiredColumns, Snapshot before)
{
var result = new List <SnapshotTableDifferences>();
var columnList = requiredColumns.ToList();
foreach (var differences in diffs)
{
if (differences.TableDefinition.TableName == table.TableName)
{
var rowDiffs = differences.RowDifferences.Select(r => RequireColumns(r, columnList)).ToList();
var newDiffs = new SnapshotTableDifferences(rowDiffs, differences.TableDefinition);
result.Add(newDiffs);
}
else
{
result.Add(differences);
}
}
return(result);
}