Replacing Objects in Collections - Teradata Meta Data Services

Replacing Objects in Collections

This section shows example code to replace objects in collections. The example code uses:

CMetaObject::ReplaceDestCollection

CMetaObject::GetDestCollection

//////////////////////////////////////////////////////////////////////

// ReplaceCollection function

//

// Example of using the CMetaObject::ReplaceDestCollection and 

//	ReplaceOrigCollection functions

//////////////////////////////////////////////////////////////////////

HRESULT ReplaceCollection(CMetaRepository &repos)

{

	LLCMetaObject	objectList;

	LLOBJECTID_t inLoids;   // list of loids 

	HRESULT result = S_OK;   // return value

	CMetaObject obj;

	OBJECTID_t

		loidEuroDiv			= NULLLOID,

		loidAmericanAutos	= NULLLOID,

		loidHurricane		= NULLLOID,

		loidYearling			= NULLLOID,

		loidTortoise		= NULLLOID,

		loidTurtle			= NULLLOID;

	// Get the ObjectIDs 

	result = repos.GetObjectID(OBJGUID_Hurricane, &loidHurricane);

	if (SUCCEEDED(result))

		result = repos.GetObjectID(OBJGUID_Turtle, &loidTurtle);

	if (SUCCEEDED(result))

		result = repos.GetObjectID(OBJGUID_AmericanAutos, &loidAmericanAutos);

	if (SUCCEEDED(result))

		result = repos.GetObjectID(OBJGUID_Yearling, &loidYearling);

	if (SUCCEEDED(result))

		result = repos.GetObjectID(OBJGUID_Tortoise, &loidTortoise);

	if (SUCCEEDED(result))

		result = repos.GetObjectID(OBJGUID_EuroDivision, &loidEuroDiv);

	if (SUCCEEDED(result))

	{

		//add Hurricane and Turtle ObjectIDs to a list

		inLoids.push_back(loidHurricane); 

		inLoids.push_back(loidTurtle); 

		// Set local object objectID to that of AmericanAutos

		obj.SetObjectID(loidAmericanAutos);

		// Call ReplaceDestCollection to replace the DivMakesAutos 

		// of AmericanAutos with Hurricane, Turtle

		result = obj.ReplaceDestCollection(inLoids, 

			RELGUID_DivMakesAutos);

		if (SUCCEEDED(result))

		{

			// Get and display the Dest Collection to see results

			result = obj.GetDestCollection(objectList, 

				RELGUID_DivMakesAutos);

			if(SUCCEEDED(result))

			{

				cout << endl;

				cout << ">>> AmericanAutos Collection after replace" << endl;

				PrintObjectList(objectList);

				CLEARVECTOR(objectList);

			}

		}

	}

	if (SUCCEEDED(result))

	{

		// Initialize input list

		CLEARVECTOR(inLoids);

		//add AmericanAutos objectID to list.

		inLoids.push_back(loidAmericanAutos); 

		// Initialize local object

		obj.Initialize();

		// Set local object objectID to that of Turtle

		obj.SetObjectID(loidTurtle);

		// Call ReplaceOrigCollection to replace the origin 

		// DivMakesAutos collection of Turtle from EuroDiv to AmericanAutos

		result = obj.ReplaceOrigCollection(inLoids, 

			RELGUID_DivMakesAutos);

		if (SUCCEEDED(result))

		{

			// Get and display the Orig Collection to see results

			result = obj.GetOrigCollection(objectList, 

				RELGUID_DivMakesAutos);

			if(SUCCEEDED(result))

			{

				cout << endl;

				cout << ">>> EuroDivision collection after replace" << endl;

				PrintObjectList(objectList);

				CLEARVECTOR(objectList);

			}

		}

	}

	);

	return result;

} // ReplaceCollection