private void EnsureStatment()
{
if (commandText == null)
{
throw new InvalidOperationException("must set CommandText");
}
if (template == null || template.OldSql != commandText)
{
lock (syncRoot)
{
if (!templates.TryGetValue(commandText, out template))
{
if (IsNamed)
{
template = CreateNameTemplate();
}
else
{
template = CreateIndexTemplate();
}
templates.Add(commandText, template);
}
}
CreateStatement();
}
else
{
statement.clearParameters();
}
for (int index = 0; index < template.Mapping.Length; ++index)
{
collection[template.Mapping[index]].SetStatement(index + 1, statement);
}
}
