/// <summary>
/// Get SCD configuration for a SCD table name
/// </summary>
/// <param name="tableName">SCD table name</param>
/// <param name="timeStampGranularity">timeStampGranularity</param>
/// <returns>SCDConfiguration</returns>
private SCDConfiguration GetSCD(string tableName, ColumnConfig.ScdTimeStampGranularityType timeStampGranularity)
{
if (_scdList.ContainsKey(tableName))
{
return(_scdList[tableName]);
}
SCDConfiguration newScd = new SCDConfiguration(timeStampGranularity);
_scdList.Add(tableName, newScd);
return(newScd);
}
/// <summary>
/// Creates a new list of SCDs (slowly changing dimension)
/// </summary>
/// <param name="columnConfigList">Column config list</param>
/// <param name="tableLoaderDestinationTable">TableLoader destination table (not SCD table)</param>
public SCDList(BindingList <ColumnConfig> columnConfigList, string tableLoaderDestinationTable)
{
if (tableLoaderDestinationTable == null)
{
tableLoaderDestinationTable = string.Empty;
}
SetFKColumnPrefix(tableLoaderDestinationTable);
List <SCDColumn> bkList = new List <SCDColumn>();
foreach (ColumnConfig config in columnConfigList)
{
if (config.Key)
{
bkList.Add(new SCDColumn(config.OutputColumnName, config.BulkDataType));
}
}
foreach (ColumnConfig config in columnConfigList)
{
if (!string.IsNullOrEmpty(config.ScdTable))
{
string[] scdTables = config.ScdTable.Split(",".ToCharArray());
for (int i = 0; i < scdTables.Length; i++)
{
string tableName = scdTables[i].Trim();
SCDConfiguration scd = GetSCD(tableName, config.ScdTimeStampGranularity);
scd.BkList = bkList;
scd.TableName = tableName;
scd.PrefixFK = _prefixFK;
if (config.IsScdValidFrom)
{
scd.SetranularityMaxValue(config.ScdTimeStampGranularity);
}
if (config.IsScdColumn)
{
scd.AttributeList.Add(new SCDColumn(config.BulkColumnName, config.BulkDataType));
}
if (config.IsScdValidFrom)
{
scd.ValidFrom = new SCDColumn(config.BulkColumnName, config.BulkDataType);
}
}
}
}
}
/// <summary>
/// Are all SCD configuration valid?
/// </summary>
/// <param name="message">Errors in a SCD configuration will be written into this ref parameter</param>
/// <returns>Are all SCD configuration valid?</returns>
public bool IsValid(ref string message)
{
message = "";
bool isValid = true;
foreach (string tableName in _scdList.Keys)
{
SCDConfiguration scd = _scdList[tableName];
string scdMessage = "";
isValid = isValid & scd.IsValid(ref scdMessage);
if (scdMessage != "")
{
if (message != "")
{
message += Environment.NewLine;
}
message += scdMessage;
}
}
return(isValid);
}
/// <summary>
/// Creates sql command for creating the SCD table
/// </summary>
/// <returns>sql command for creating the SCD </returns>
public string GetCreateScdTables()
{
string result = "";
foreach (string tableName in _scdList.Keys)
{
SCDConfiguration scd = _scdList[tableName];
string bks = SCDHelper.GetSqlBkListWithDataType(scd.BkList, _prefixFK, "", 2);
string attributes = SCDHelper.GetSqlColumnListWithDataType(scd.AttributeList, "", "", 2, false, "NULL", "");
string create = TEMPLATE_CREATE_SCD_TABLE.Replace("<tableName>", tableName);
create = create.Replace("<GranularityMaxValue>", scd.GranularityMaxValue);
create = create.Replace("<bks>", bks);
create = create.Replace("<attributes>", attributes);
create = create.Replace("<FK_ID>", _prefixFK + "ID");
create += Environment.NewLine + Environment.NewLine;
result += create;
}
return(result);
}
