protected RelOptions ParseRelOptions(object value)
{
var result = new RelOptions();
var options = value as string[];
if (options == null)
{
return(result);
}
for (int i = 0; i < options.Length; i++)
{
options[i] = options[i].Trim();
string optionName;
string optionValue = "";
int pos = options[i].IndexOf('=');
if (pos >= 0)
{
optionName = options[i].Substring(0, pos).ToLower();
optionValue = options[i].Substring(pos + 1);
}
else
{
optionName = options[i];
}
ReadRelOption(optionName, optionValue, result);
}
return(result);
}
protected override void ReadSpecialIndexProperties(DbDataReader dr, Index i)
{
base.ReadSpecialIndexProperties(dr, i);
if (dr["reloptions"] != DBNull.Value)
{
RelOptions ro = ParseRelOptions(dr["reloptions"]);
i.FillFactor = ro.FillFactor;
}
}
/// <summary>
/// Reads a certain reloption value.
/// </summary>
/// <param name="optionName">The name of the option in lowercase</param>
/// <param name="optionValue">The value of the option, maybe empty, but not null</param>
/// <returns></returns>
protected virtual void ReadRelOption(string optionName, string optionValue, RelOptions options)
{
if (optionName == "fillfactor")
{
_ = byte.TryParse(optionValue, out var value);
if (value > 0)
{
options.FillFactor = value;
}
}
}
