public void MapOutput(string outputName, string externalColumnName, Lookup.MapType mapType)
{
ComponentInstance.InsertOutputColumnAt(
Component.OutputCollection[0].ID,
Component.OutputCollection[0].OutputColumnCollection.Count,
outputName,
outputName);
string property = (mapType == MapType.JoinToReferenceColumn)
? "JoinToReferenceColumn"
: "CopyFromReferenceColumn";
ComponentInstance.SetOutputColumnProperty(
Component.OutputCollection[0].ID,
Component.OutputCollection[0].OutputColumnCollection[outputName].ID,
property,
externalColumnName
);
}
public static Lookup CreateLookupFromXml(Packages.VulcanPackage vulcanPackage, IDTSComponentMetaData90 parentComponent, MainPipe dataFlowTask, XPathNavigator lookupNav)
{
if (lookupNav == null || lookupNav.Name.ToUpperInvariant() != "Lookup".ToUpperInvariant())
{
return null;
}
string lookupName = lookupNav.SelectSingleNode("@Name", vulcanPackage.VulcanConfig.NamespaceManager).Value;
Message.Trace(Severity.Debug, "Begin: Lookup Transformation {0}", lookupName);
Connection sourceConnection =
Connection.GetExistingConnection(
vulcanPackage,
lookupNav
);
string query = lookupNav.SelectSingleNode("rc:Query", vulcanPackage.VulcanConfig.NamespaceManager) == null
? null
: lookupNav.SelectSingleNode("rc:Query", vulcanPackage.VulcanConfig.NamespaceManager).Value;
string table = lookupNav.SelectSingleNode("rc:Table", vulcanPackage.VulcanConfig.NamespaceManager) == null
? null
: lookupNav.SelectSingleNode("rc:Table", vulcanPackage.VulcanConfig.NamespaceManager).Value;
if (table != null)
{
SelectEmitter se = new SelectEmitter(vulcanPackage, table, "*");
se.Emit(out query);
}
Lookup l = new Lookup(vulcanPackage, dataFlowTask, parentComponent, lookupName, lookupName, sourceConnection, query);
foreach (XPathNavigator inputNav in lookupNav.Select("rc:Input", vulcanPackage.VulcanConfig.NamespaceManager))
{
string inputName = inputNav.SelectSingleNode("@Name", vulcanPackage.VulcanConfig.NamespaceManager).Value;
string joinToName = inputNav.SelectSingleNode("rc:JoinToReferenceColumn", vulcanPackage.VulcanConfig.NamespaceManager) == null
? null
: inputNav.SelectSingleNode("rc:JoinToReferenceColumn", vulcanPackage.VulcanConfig.NamespaceManager).Value;
string copyFromName = inputNav.SelectSingleNode("rc:CopyFromReferenceColumn", vulcanPackage.VulcanConfig.NamespaceManager) == null
? null
: inputNav.SelectSingleNode("rc:CopyFromReferenceColumn", vulcanPackage.VulcanConfig.NamespaceManager).Value;
if (joinToName != null)
{
l.MapInput(inputName, joinToName, Lookup.MapType.JoinToReferenceColumn);
}
else if (copyFromName != null)
{
l.MapInput(inputName, copyFromName, Lookup.MapType.CopyFromReferenceColumn);
}
else
{
Message.Trace(Severity.Error, "Adding Lookup Type: Must supply either a JoinToName or CopyFromName when mapping inputs.");
}
}
foreach (XPathNavigator outputNav in lookupNav.Select("rc:Output", vulcanPackage.VulcanConfig.NamespaceManager))
{
string outputName = outputNav.SelectSingleNode("@Name", vulcanPackage.VulcanConfig.NamespaceManager).Value;
string joinToName = outputNav.SelectSingleNode("rc:JoinToReferenceColumn", vulcanPackage.VulcanConfig.NamespaceManager) == null
? null
: outputNav.SelectSingleNode("rc:JoinToReferenceColumn", vulcanPackage.VulcanConfig.NamespaceManager).Value;
string copyFromName = outputNav.SelectSingleNode("rc:CopyFromReferenceColumn", vulcanPackage.VulcanConfig.NamespaceManager) == null
? null
: outputNav.SelectSingleNode("rc:CopyFromReferenceColumn", vulcanPackage.VulcanConfig.NamespaceManager).Value;
if (joinToName != null)
{
l.MapOutput(outputName, joinToName, Lookup.MapType.JoinToReferenceColumn);
}
else if (copyFromName != null)
{
l.MapOutput(outputName, copyFromName, Lookup.MapType.CopyFromReferenceColumn);
}
else
{
throw new Exception("Vulcan: ETLPattern: Adding Lookup Type: Must supply either a JoinToName or CopyFromName when mapping outputs.");
}
}
return l;
}
public void MapInput(string inputName, string externalColumnName, Lookup.MapType mapType)
{
this.SetInputUsageType(inputName, DTSUsageType.UT_READONLY);
string property = (mapType == MapType.JoinToReferenceColumn)
? "JoinToReferenceColumn"
: "CopyFromReferenceColumn";
ComponentInstance.SetInputColumnProperty(
Component.InputCollection[0].ID,
Component.InputCollection[0].InputColumnCollection[inputName].ID,
property,
externalColumnName
);
}
