ExecuteQuery WhereClause problem for first time in the session of the page

Question

I am new to OAF and I have panic problem.
I have two pages application like following..
First page “LookupTypes” and second page “LookupValues” for the selected first page Lookuptype.
The problem is when I press first time(after lunching the page/first time for the session) the button in “LookupType” page I am getting all the “Lookup Values” for all the lookup types instead of getting only for one Lookuptype and I will press “back” button in “Lookup Values” Second page to come back “LookupType” first page, Again immediately I will press the same button which I pressed first time, this time I will get correct number of records for one Lookup Type. I don’t know why its where clause is not working first time.
Please find the following code and help me.
First page is LookupTypes->second page is Lookup Values
Step 1 : I have button on “Lookup Types” page to call “Lookup values” page
Step 2 : “Lookup Values” page control to receive the parameters from lookup type page.
Step 3 : application module (AM) to execute the query..
Code :
Step 1 : I have button on “Lookup Types” page to call “Lookup values” page
Following is the code from “Lookup Types” control.
public void processFormRequest(OAPageContext pageContext, OAWebBean webBean)
super.processFormRequest(pageContext, webBean);
String paramLookupTypeAction = pageContext.getParameter(EVENT_PARAM) ;
String paramLookupType = pageContext.getParameter("paramLookupType");
OAApplicationModule PafLookupAM = pageContext.getApplicationModule(webBean);
//Adding calling LookUp Values screen
if (paramLookupTypeAction.equals("viewLookupValues") )
// PafLookupAM.invokeMethod("clearLookupValueMethod");
//Here we prepare the HashMap object, that cotains name of the parameter and the value of the parameters
HashMap phm = new HashMap() ;
phm.put("xxparamLookupType",paramLookupType);
phm.put("xxparamLookupTypeAction",paramLookupTypeAction);
pageContext.setForwardURL(
"OA.jsp?page=/oracle/apps/xxpaf/pafLookups/webui/pafLookupValuesPG"
, null //not needed as we are retaining menu context
,OAWebBeanConstants.KEEP_MENU_CONTEXT
,null //not needed as we are retaining menu context
,phm //pass the hashMap that contains values for all of the parameters
,true //retain AM
,OAWebBeanConstants.ADD_BREAD_CRUMB_NO
,OAWebBeanConstants.IGNORE_MESSAGES);
Step 2 : Following is the code from “Lookup Values” page control to receive the parameters from lookup type page.
public void processRequest(OAPageContext pageContext, OAWebBean webBean)
super.processRequest(pageContext, webBean);
String paramLookupTypeAction=pageContext.getParameter("xxparamLookupTypeAction");
String paramLookupType=pageContext.getParameter("xxparamLookupType");
OAApplicationModule PafLookupAM = pageContext.getApplicationModule(webBean);
Serializable LookupTypeParamList[]= {paramLookupTypeAction,paramLookupType};
System.out.println("viewLookupValues 3 " + paramLookupType);
System.out.println("viewLookupValues 4 " + paramLookupTypeAction);
if ( paramLookupTypeAction!=null && paramLookupTypeAction.equals("viewLookupValues"))
System.out.println("viewLookupValues 5 " + paramLookupType);
System.out.println("viewLookupValues 6 " + paramLookupTypeAction);
PafLookupAM.invokeMethod("viewLookupValuesMethod", LookupTypeParamList);
          // Assuming the controller is associated with the pageLayout region
// import oracle.apps.fnd.framework.webui.beans.layout.OAPageLayoutBean;
     //     OAPageLayoutBean page = (OAPageLayoutBean)webBean;
     //     page.setTitle("Lookup Type: " + paramLookupType);
Step 3 : Following is the code from application module (AM) to execute the query..
public void viewLookupValuesMethod( String pAction, String pLookupType)
try
OAViewObjectImpl pervo = getPafLookupValuesEOVO();
String existingWhereClause = pervo.getWhereClause();
pervo.setWhereClauseParams(null);
pervo.setWhereClause("Lookup_Type = :1");
pervo.setWhereClauseParam(0, new String (pLookupType));
pervo.executeQuery();
pervo.setWhereClauseParams(null);
pervo.setWhereClause(existingWhereClause);
catch(Exception exception1)
throw OAException.wrapperException(exception1);
Best Regards,
Pathi TVB

Answer 1

Pathi,
Please try to have the WhereClause in the VO query as part of static definition itself. So you would only need to bind the parameter and execute the Query.
Try and let me know if that helped.
Thanks
Sumit