public DataComparer(DataComparerConfig config, ISorter sorter, IRowComparerFactory rowComparerFactory,
IKeyMapperFactory keyMapperFactory, IValueMapperFactory valueMapperFactory)
{
_sorter = sorter;
_rowComparerFactory = rowComparerFactory;
_keyMapperFactory = keyMapperFactory;
_valueMapperFactory = valueMapperFactory;
Config = config;
_stopwatch = new Stopwatch();
}
public IKeyMapper Create(DataComparerConfig config, DataTable left, DataTable right)
{
var mapper = new KeyColumnMapper();
var leftCols = left.Columns.Cast <DataColumn>().ToDictionary(x => x.ColumnName);
var rightCols = right.Columns.Cast <DataColumn>().ToDictionary(x => x.ColumnName);
foreach (var key in config.Keys)
{
if (!leftCols.TryGetValue(key, out var leftCol))
{
continue;
}
if (!rightCols.TryGetValue(key, out var rightCol))
{
continue;
}
mapper.Add(leftCol, rightCol);
}
if (mapper.LeftColumns.Count > 0)
{
return(mapper);
}
// TODO: 5-Improve DataTables do not contain any specified keys warning message.
Log.Warn($"Warning: Collections do not contain any key. Using first matching column.");
foreach (DataColumn leftCol in left.Columns)
{
if (!rightCols.TryGetValue(leftCol.ColumnName, out var rightCol))
{
continue;
}
mapper.Add(leftCol, rightCol);
break;
}
if (mapper.LeftColumns.Count == 0)
{
// TODO: 5-Improve no matching Key Columns message exception
throw new InvalidOperationException("Could not find any mathcing Columns");
}
return(mapper);
}
public IColumnMapper Create(DataComparerConfig config, IKeyMapper keyMap, DataTable left, DataTable right)
{
var mapper = new ColumnMapper();
var leftCols = left.Columns.Cast <DataColumn>().ToDictionary(x => x.ColumnName);
var rightCols = right.Columns.Cast <DataColumn>().ToDictionary(x => x.ColumnName);
foreach (DataColumn leftCol in left.Columns)
{
var name = leftCol.ColumnName;
if (config.Keys.Contains(name))
{
continue;
}
if (config.Skip.Contains(name))
{
continue;
}
if (!rightCols.TryGetValue(name, out var rightCol))
{
continue;
}
mapper.Add(leftCol, rightCol);
break;
}
if (mapper.LeftColumns.Count == 0)
{
// TODO: 5-Improve no matching Value Columns message exception
throw new InvalidOperationException("Could not find any mathcing Value Columns");
}
return(mapper);
}
