public IEnumerable <KeyValuePair <string, string> > Execute()
{
log.Info(string.Format("Indexed scan operation for '{0}', filter: '{1}' {2} '{3}'.", tableName, filter.Column,
OperatorConverter.ToComboString(filter.Operator).ToString(), filter.Value));
switch (filter.Operator)
{
case Operator.Equal:
var keys = index.Get(filter.Value);
foreach (var key in keys)
{
yield return(new KeyValuePair <string, string>(key, repository.Get(databaseFile, table.Name, key)));
}
break;
case Operator.NotEqual:
foreach (var row in GetNotEqual())
{
yield return(row);
}
break;
case Operator.Less:
foreach (var row in GetLess())
{
yield return(row);
}
break;
case Operator.LessOrEqual:
foreach (var row in GetLessOrEqual())
{
yield return(row);
}
break;
case Operator.Greater:
foreach (var row in GetGreater())
{
yield return(row);
}
break;
case Operator.GreaterOrEqual:
foreach (var row in GetGreaterOrEqual())
{
yield return(row);
}
break;
}
}
