[10.1.2] Lov validate doesn't support bind params

Question

Hi forum,
We were trying to use lov validate feature with a view object LOV that has parameteres in its query. Knowing that JHeadstart has the query bind field in Application Structure file, we've filled it.
A strange behaviour occurs when the user puts a valid value in LOV field and change the field focus: the lov validate fires the LOV window, even if the value is valid. This behaviour occurs only in the first time; after that, validation seems to work fine.
We've found that the problem is with onLovValidate method. This method uses the iterator from the LOV window, but at first time this window wasn't opened yet, so the applyIterBindParams was not executed for it. When the corresponding View Object has query parameters, it throwns an exception, which causes the lov window to be opened.
We found a solution which consists of changing the ValidateCallBack javascript function: it should submit the bindParams expression that is in struts-config.xml as a form parameter. When we enter in onLovValidate method, this should execute the same steps that is done in applyIterBindParams, and only after that use the lov iterator to see if the value typed is valid or not.
Thanks,
Eduardo

Answer 1

The details...
In your UIX page:
          function ValidateCallBackTsacContratoPeriodicidadePagamento(params)
            params["searchAttribute"]= "Codigo";
            params["eventValue"]= "TsacPeriodicidadeLookup";
            params["lovValueBinding"] = "TsacPeriodicidadeLookupCodigo";
            params["baseValueBinding"] = "TsacContratoPeriodicidadePagamento";
            // added. The expression is the same that resides in struts-config.xml
            params["bindParams"] = "TsacPeriodicidadeLookupIterator=${sessionScope.CodigoEmpresaEscolhida}";
            return true;
          }In the first lines of JhsDataAction.onLovValidate, we've put this new lines:
     String bindParams = request.getParameter("bindParams");
     JhsDataActionMapping mapping = new JhsDataActionMapping();
     DataActionMapping oldMapping = daContext.getActionMapping();
     mapping.setBindParams(bindParams);In the middle of JhsDataAction.onLovValidate:
     // execute the onQuickSearch to validate the entered value
     daContext.setBindingContainer(lovContainer);
     daContext.setActionMapping(mapping); // new line
     this.applyIterBindParams(daContext); // new line
     daContext.setActionMapping(oldMapping); // new lineWe've created a fake ActionMapping just to call applyIterBindParams. Before, we save the original ActionMapping, and restores it when applyIterBindParams is done.
Eduardo