public override DataTable GetSchema(string collectionName, string[] restrictionValues)
{
if (_connectionState != ConnectionState.Open)
throw new InvalidOperationException();
string[] parms = new string[5];
if (restrictionValues == null) restrictionValues = new string[0];
restrictionValues.CopyTo(parms, 0);
switch (collectionName.ToUpper(CultureInfo.InvariantCulture))
{
case "METADATACOLLECTIONS":
return Schema_MetaDataCollections();
case "DATASOURCEINFORMATION":
return Schema_DataSourceInformation();
case "DATATYPES":
return Schema_DataTypes();
case "COLUMNS":
case "TABLECOLUMNS":
return Schema_Columns(parms[0], parms[2], parms[3]);
case "INDEXES":
return Schema_Indexes(parms[0], parms[2], parms[3]);
case "TRIGGERS":
return Schema_Triggers(parms[0], parms[2], parms[3]);
case "INDEXCOLUMNS":
return Schema_IndexColumns(parms[0], parms[2], parms[3], parms[4]);
case "TABLES":
return Schema_Tables(parms[0], parms[2], parms[3]);
case "VIEWS":
return Schema_Views(parms[0], parms[2]);
case "VIEWCOLUMNS":
return Schema_ViewColumns(parms[0], parms[2], parms[3]);
case "FOREIGNKEYS":
return Schema_ForeignKeys(parms[0], parms[2], parms[3]);
case "CATALOGS":
return Schema_Catalogs(parms[0]);
case "RESERVEDWORDS":
return Schema_ReservedWords();
}
throw new NotSupportedException();
}