public static DerivedColumns CreateDerivedColumnsFromXml(Packages.VulcanPackage vulcanPackage, IDTSComponentMetaData90 parentComponent, MainPipe dataFlowTask, XPathNavigator derivedNav)
{
if (derivedNav == null || derivedNav.Name.ToUpperInvariant() != "DerivedColumns".ToUpperInvariant())
{
//We don't handle this.
return null;
}
string componentName = derivedNav.SelectSingleNode("@Name", vulcanPackage.VulcanConfig.NamespaceManager).Value;
Message.Trace(Severity.Debug, "Begin: DerivedColumns Transformation {0}", componentName);
DerivedColumns dc = new DerivedColumns(vulcanPackage, dataFlowTask, parentComponent, componentName, componentName);
foreach (XPathNavigator nav in derivedNav.Select("rc:Column", vulcanPackage.VulcanConfig.NamespaceManager))
{
string colName = nav.SelectSingleNode("@Name").Value;
string typeAsString = nav.SelectSingleNode("@Type").Value;
int length = nav.SelectSingleNode("@Length").ValueAsInt;
int precision = nav.SelectSingleNode("@Precision").ValueAsInt;
int scale = nav.SelectSingleNode("@Scale").ValueAsInt;
int codepage = nav.SelectSingleNode("@Codepage").ValueAsInt;
string expression = nav.Value;
DataType type = TransformationFactory.GetDataTypeFromString(typeAsString);
dc.AddOutputColumn(colName, type, expression, length, precision, scale, codepage);
}
return dc;
}
public static DerivedColumns CreateDerivedColumnsFromXml(Packages.VulcanPackage vulcanPackage, IDTSComponentMetaData90 parentComponent, MainPipe dataFlowTask, XPathNavigator derivedNav)
{
if (derivedNav == null || derivedNav.Name.ToUpperInvariant() != "DerivedColumns".ToUpperInvariant())
{
//We don't handle this.
return(null);
}
string componentName = derivedNav.SelectSingleNode("@Name", vulcanPackage.VulcanConfig.NamespaceManager).Value;
Message.Trace(Severity.Debug, "Begin: DerivedColumns Transformation {0}", componentName);
DerivedColumns dc = new DerivedColumns(vulcanPackage, dataFlowTask, parentComponent, componentName, componentName);
foreach (XPathNavigator nav in derivedNav.Select("rc:Column", vulcanPackage.VulcanConfig.NamespaceManager))
{
string colName = nav.SelectSingleNode("@Name").Value;
string typeAsString = nav.SelectSingleNode("@Type").Value;
int length = nav.SelectSingleNode("@Length").ValueAsInt;
int precision = nav.SelectSingleNode("@Precision").ValueAsInt;
int scale = nav.SelectSingleNode("@Scale").ValueAsInt;
int codepage = nav.SelectSingleNode("@Codepage").ValueAsInt;
string expression = nav.Value;
DataType type = TransformationFactory.GetDataTypeFromString(typeAsString);
dc.AddOutputColumn(colName, type, expression, length, precision, scale, codepage);
}
return(dc);
}
public static DerivedColumns CreateIsNullPatcherFromXml(Packages.VulcanPackage vulcanPackage, IDTSComponentMetaData90 parentComponent, MainPipe dataFlowTask, XPathNavigator nullNav)
{
if (nullNav == null || nullNav.Name.ToUpperInvariant() != "IsNullPatcher".ToUpperInvariant())
{
return(null);
}
string componentName = nullNav.SelectSingleNode("@Name", vulcanPackage.VulcanConfig.NamespaceManager).Value;
Message.Trace(Severity.Debug, "Begin: IsNullPatcher variant DerivedColumns Transformation {0}", componentName);
DerivedColumns dc = new DerivedColumns(vulcanPackage, dataFlowTask, parentComponent, componentName, componentName);
IDTSVirtualInput90 vi = dc.Component.InputCollection[0].GetVirtualInput();
TemplateEmitter te = new TemplateEmitter("NullPatcherIsnullTemplate", vulcanPackage, null);
foreach (XPathNavigator nav in nullNav.Select("rc:Column", vulcanPackage.VulcanConfig.NamespaceManager))
{
string name = nav.SelectSingleNode("@Name").Value;
string defaultValue = nav.SelectSingleNode("@DefaultValue").Value;
dc.SetInputUsageType(vi, vi.VirtualInputColumnCollection[name], DTSUsageType.UT_READWRITE);
IDTSInputColumn90 inputCol = dc.Component.InputCollection[0].InputColumnCollection[name];
string expression;
te.SetParameters("#" + vi.VirtualInputColumnCollection[name].LineageID.ToString(), defaultValue);
te.Emit(out expression);
string friendlyExpression;
te.SetParameters(name, defaultValue);
te.Emit(out friendlyExpression);
inputCol.CustomPropertyCollection["Expression"].Value = expression;
inputCol.CustomPropertyCollection["FriendlyExpression"].Value = friendlyExpression;
}
return(dc);
}
public static DerivedColumns CreateIsNullPatcherFromXml(Packages.VulcanPackage vulcanPackage, IDTSComponentMetaData90 parentComponent, MainPipe dataFlowTask, XPathNavigator nullNav)
{
if (nullNav == null || nullNav.Name.ToUpperInvariant() != "IsNullPatcher".ToUpperInvariant())
{
return null;
}
string componentName = nullNav.SelectSingleNode("@Name", vulcanPackage.VulcanConfig.NamespaceManager).Value;
Message.Trace(Severity.Debug, "Begin: IsNullPatcher variant DerivedColumns Transformation {0}", componentName);
DerivedColumns dc = new DerivedColumns(vulcanPackage, dataFlowTask, parentComponent, componentName, componentName);
IDTSVirtualInput90 vi = dc.Component.InputCollection[0].GetVirtualInput();
TemplateEmitter te = new TemplateEmitter("NullPatcherIsnullTemplate", vulcanPackage, null);
foreach (XPathNavigator nav in nullNav.Select("rc:Column", vulcanPackage.VulcanConfig.NamespaceManager))
{
string name = nav.SelectSingleNode("@Name").Value;
string defaultValue = nav.SelectSingleNode("@DefaultValue").Value;
dc.SetInputUsageType(vi, vi.VirtualInputColumnCollection[name], DTSUsageType.UT_READWRITE);
IDTSInputColumn90 inputCol = dc.Component.InputCollection[0].InputColumnCollection[name];
string expression;
te.SetParameters("#" + vi.VirtualInputColumnCollection[name].LineageID.ToString(), defaultValue);
te.Emit(out expression);
string friendlyExpression;
te.SetParameters(name, defaultValue);
te.Emit(out friendlyExpression);
inputCol.CustomPropertyCollection["Expression"].Value = expression;
inputCol.CustomPropertyCollection["FriendlyExpression"].Value = friendlyExpression;
}
return dc;
}