Creating View Objects at Runtime for Validation

Question

In Oracle® Application Development Framework
Developer’s Guide For Forms/4GL Developers tutorial there is a topic about Creating View Objects at Runtime for Validation.
Is there any sample code available for this topic?
Please help
Regards
S Karar

Answer 1

I have created a helper method . The code is given below
protected ViewObject getValidationVO(String viewObjectDefName) {
// Create a new name for the VO instance being used for validation
String name = "Validation_" + viewObjectDefName.replace('.', '_');
// Try to see if an instance of this name already exists
ViewObject vo = getDBTransaction().getRootApplicationModule().findViewObject(name);
// If it doesn't already exist, create it using the definition name
if (vo == null) {
vo = getDBTransaction().getRootApplicationModule().createViewObject(name,viewObjectDefName);
return vo;
// Validation_bc4j_project of type ApplicationModule not found
and created a validation method.
The code inside validation method is given below.
public boolean validateAvgMr(Number data) {
String batch_catg = getQuality();
// Get the view object instance for validation
ViewObject vo = getValidationVO("bc4j_project.v_sqc0150");
if (getTestStage()=="DOLLOP" && getQuality()=="DECO")
// Set it's bind variables (which it will typically have!)
vo.setNamedWhereClauseParam("batch_catg","DECO");
vo.executeQuery();
Number dol_mr_lcl=(Number)vo.first().getAttribute("DolMrLclStd");
setStdMrLcl(dol_mr_lcl);
return true;
return true;
I have checked the validation view and it is returing value with the same bind variable value but is not returning any value when using inside this method validation.
I have checked several times but can't find the fault in the code.
Please help