How to get the property name of a srop down menu in the Actiion Class

Question

Hi All!
I am trying to build two drop down menu in the jsp!When the page first loads the first menu is populated with the data from the database.Depending on the choise made in the first menu the second gets populated!
As of now I am using these codes!
The JSP contains:
function getCorrespondingSkills(obj)
          document.forms[0].target="_self";          
          document.forms[0].action='<%=request.getContextPath()%>/jsp/resume/Skill.do?method=getSkillsList&technologyId='+obj.value+'&selectedField='+obj.property;
          document.forms[0].submit();
     function submitTechSkills(obj)
          document.forms[0].target="_self";
          document.forms[0].action='<%=request.getContextPath()%>/jsp/resume/Skill.do?method=getSkillsValue&skillId='+obj.value;
          //document.forms[0].submit();
<td class="brdrInput">
                                                        <%--<html:select name="SkillsForm" property="technologies1" onchange='getCorrespondingSkills(this)'>--%>
                                                        <html:select name="SkillsForm" property="technologies1"onchange='getCorrespondingSkills(this)'>
                                                             <html:optionsCollection  property="technologyList" value="technologyId" label="technology" />
                                                            </html:select>
                                                        </td>
                                                              <td class="brdrInput">
                                                              <html:select name="SkillsForm" property="skills1"onchange='submitTechSkills(this)' >
                                                        <html:optionsCollection  property="skillList" value="skillId" label="skill" />
                                                            </html:select>
                                                        </td>The action class is something like this:
public ActionForward unspecified(ActionMapping mapping, ActionForm form,
                         HttpServletRequest request, HttpServletResponse response)
                    HttpSession session=request.getSession();
                    String str=(String)session.getAttribute("employeeId");
                    System.out.println("this is the employeeId"+str);
                    SkillsForm formObject=(SkillsForm)form;
                    List technologyList;
                    technologyList=(List)TechnologyDelegate.getTechnologyFromDB();
                    for (Iterator iter = technologyList.iterator(); iter.hasNext();) {
                         Technology tech= (Technology) iter.next();
                         System.out.println("Technology"+tech.getTechnology());
                         System.out.println("TechnologyId"+tech.getTechnologyId());
                    formObject.setTechnologyList(technologyList);
                    //Populate a Skills drop menu corresponding to the first technologyId
                    int var=1;
                    Integer var1=new Integer(var);
                    List skillsList;
                    skillsList=(List)SkillsDelegate.getSkillFromDB(var1);               
                    formObject.setSkillList(skillsList);
                    System.out.println("associated Skills"+formObject.getSkillList().size());
                    System.out.println("=============>");
                    session.setAttribute("employeeId",str);
                    return mapping.findForward("skillsPopulation");
               public ActionForward getSkillsList(ActionMapping mapping, ActionForm form,
                         HttpServletRequest request, HttpServletResponse response)
                    HttpSession session=request.getSession();                    
                    SkillsForm formObject=(SkillsForm)form;
                    List technologyList;
                    technologyList=(List)TechnologyDelegate.getTechnologyFromDB();
                    for (Iterator iter = technologyList.iterator(); iter.hasNext();) {
                         Technology tech= (Technology) iter.next();
                         System.out.println("Technology"+tech.getTechnology());
                         System.out.println("TechnologyId"+tech.getTechnologyId());
                    formObject.setTechnologyList(technologyList);                    
                    Integer techId=new Integer(formObject.getTechnologyId());                    
                    String technologyId=formObject.getTechnologyId();                    
                    List skillsList;
                    skillsList=(List)SkillsDelegate.getSkillFromDB(techId);
                    //All the skillList being set along with the one that has to be!                    
                    formObject.setSkillList(skillsList);
                    //the SkillLsit that is being used to populate the drop down is being reset
                    //every time a new technology is set!
                    //to overcome this we need to define seperate SkillList for each row!
                    List var=formObject.getSkillList();
                    for (Iterator iter = var.iterator(); iter.hasNext();)
                         Skills vari= (Skills) iter.next();
                         System.out.println("SKILLS IDSFASDFGAGFG "+vari.getSkillId());
                    System.out.println("skillsList"+skillsList.size());
                    System.out.println("associated Skills"+formObject.getSkillList().size());
                    session.setAttribute("employeeId",session.getAttribute("employeeId"));
                    session.setAttribute("technologyList",technologyList);
                    session.setAttribute("technologyId",technologyId);
                    System.out.println("TECHNOLOGY ID"+technologyId);
                    System.out.println("TECHNOLOGY ID"+techId);
                    return mapping.findForward("refreshAgain");
               }* The first function id used to populate the form with the first technology in the databse and its corresponding skills! The second function fetches the skills wrt the selected technology!
My prob is that when ever I change the technology in the dropdown My all skills menu gets populated with the skills associated with the selected technology!
I have 5 rows of such tech and skills columns! And the prob is that if I select tech inthe 2nd row then all the skills rows gets changed! all I want is that the 2nd row only be populated!
Is there a way in which I can know in my action class ,'which row has been selected'.
I am a newbie to Java and am just learning things!
Pls do help! I am desperate!!!!!!!1

Answer 1

So far as I'm aware, you can't get metadata information about the underlying tables in a query from Oracle and/or the Oracle drivers. I suspect, in fact, that the driver would have to have its own SQL parser to get this sort of information.
I'm curious though-- how do you have application logic that depends on the name of the source table but not know in the application what table is involved? Could you do something "cheesy" like
SELECT 'tbl_customerRegistration' AS tbl1_name,
       tbl_customerRegistration.*
...Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC