private bool CheckPresenceValue(RelationInfo info, IRow row)
{
if (info.PresenceField is object)
{
if (!(info.PresenceField is BooleanField) &&
info.PresenceValue is bool b)
{
if (info.PresenceField.IsNull(row) == b)
{
return(false);
}
}
else
{
var newRow = row.CreateNew();
info.PresenceField.AsObject(newRow, info.PresenceField.ConvertValue(
info.PresenceValue, CultureInfo.InvariantCulture));
if (info.PresenceField.IndexCompare(row, newRow) != 0)
{
return(false);
}
}
}
return(true);
}
public static bool IsUniqueIndexException(IDbConnection connection,
Exception exception, string indexName,
IRow oldRow, IRow newRow, params Field[] indexFields)
{
if (connection == null)
{
throw new ArgumentNullException("connection");
}
if (exception == null)
{
throw new ArgumentNullException("exception");
}
if (indexFields == null ||
indexFields.Length == 0)
{
throw new ArgumentNullException("indexField");
}
if (indexName != null &&
!exception.Message.Contains(indexName))
{
return(false);
}
if (oldRow != null)
{
bool anyDifferent = false;
foreach (var field in indexFields)
{
if (field.IndexCompare(oldRow, newRow) != 0)
{
anyDifferent = true;
break;
}
}
if (!anyDifferent)
{
return(false);
}
}
var row = newRow.CreateNew();
var idField = newRow.IdField;
var query = new SqlQuery()
.Dialect(connection.GetDialect())
.From(row).Select(idField);
foreach (var field in indexFields)
{
query.WhereEqual(field, field.AsSqlValue(newRow));
}
if (!query.GetFirst(connection))
{
return(false);
}
return(idField.IndexCompare(row, newRow) != 0);
}
