private void _PopulateDimensions()
{
foreach (XPathNavigator dimNav in _tableNavigator.Select("rc:Columns/rc:Dimension", _vulcanConfig.NamespaceManager))
{
string dimName = dimNav.SelectSingleNode("@Name").Value;
string factTableDimColumnName = dimNav.SelectSingleNode("@OutputName").Value;
Message.Trace(Severity.Debug,"Mapping {0} to Dimension {1}", _name, dimName);
if (DimensionHelper.DimDictionary.ContainsKey(dimName))
{
TableHelper dimTableHelper =
new TableHelper(
dimName,
DimensionHelper.DimDictionary[dimName],
DimensionHelper.DimNavigatorDictionary[dimName].SelectSingleNode("rc:Table",_vulcanConfig.NamespaceManager));
Column dimKeyColumn = dimTableHelper.KeyColumn;
if (dimKeyColumn != null)
{
string constraintName = String.Format(System.Globalization.CultureInfo.InvariantCulture,"{0}_{1}_{2}", _name, dimName, factTableDimColumnName);
//Clone the Foreign Key Column and add it into our fact table.
Column tableColumn = (Column)dimKeyColumn.Clone();
tableColumn.Properties["Name"] = factTableDimColumnName;
this.Columns.Add(factTableDimColumnName,tableColumn);
ForeignKeyConstraint fkc = new ForeignKeyConstraint(constraintName, tableColumn, dimKeyColumn, dimName);
this.Constraints.Add(fkc);
}
else
{
dimTableHelper.TraceHelper();
Message.Trace(Severity.Error,"Dimension {0} has no key column.\n{1}", dimName,dimTableHelper.TableNavigator.OuterXml);
}
}
else
{
Message.Trace(Severity.Error,"Dimension {0} cannot be found in the Dimensions Database.", dimName);
}
}
}
private void _PopulateConstraints()
{
int index = 0;
foreach (XPathNavigator conNav in _tableNavigator.Select("rc:Constraints/rc:PrimaryKeyConstraint", _vulcanConfig.NamespaceManager))
{
_constraintList.Add(_ParseSimpleConstraint(conNav,true,index));
index++;
}
index = 0;
foreach (XPathNavigator conNav in _tableNavigator.Select("rc:Constraints/rc:Constraint", _vulcanConfig.NamespaceManager))
{
_constraintList.Add(_ParseSimpleConstraint(conNav, false, index));
index++;
}
foreach (XPathNavigator fkCon in _tableNavigator.Select("rc:Constraints/rc:ForeignKeyConstraint", _vulcanConfig.NamespaceManager))
{
Column localColumn = new Column();
Column foreignColumn = new Column();
foreach (XPathNavigator nav in fkCon.Select("rc:LocalColumn/@*", _vulcanConfig.NamespaceManager))
{
localColumn.Properties[nav.Name] = nav.Value;
}
foreach (XPathNavigator nav in fkCon.Select("rc:ForeignColumn/@*", _vulcanConfig.NamespaceManager))
{
foreignColumn.Properties[nav.Name] = nav.Value;
}
string fkName = String.Format(System.Globalization.CultureInfo.InvariantCulture,"FK_{0}_{1}_{2}_{3}",_name,localColumn.Name,foreignColumn.Properties["Table"],foreignColumn.Name);
ForeignKeyConstraint fkc = new ForeignKeyConstraint(fkName, localColumn, foreignColumn, foreignColumn.Properties["Table"]);
_constraintList.Add(fkc);
}
}
