Ankit Mishra

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since Jul 15, 2009

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Recent posts by Ankit Mishra

Best way of handling multiple search Criteria

Hi,
Thanks for your replies!
Ya that would be a performance hit that's why i put up this question. I am working with dynamic queries now searching on criteria basis now.

13 years ago

JDBC and Relational Databases

Best way of handling multiple search Criteria

Thanks Bear, Sorry for the trouble!

@ Vijitha

I give you an example - I have 4 fields say date, name, age and marks.

now i have combinations to give me desired results for example:
Only date [gives a longer search result]
date + name
date + age
date + marks
date + name + age
date + name + marks
.................

I have one single query to get the desired search result!

What I am doing is extracting the complete result once which is say will get on the date search criteria a bigger chunk.

now, for other combinations I am currently maintaining one list in which i have the search result [bigger chunk] and then I am removing elements not needed with other combinations
for example:

I have got this list
name - a, b, c,d, e ,f
age - 12,13, 12,, 13, 14
marks- 78, 78, 78 ,78 ,78

so above is one complete list when i say on date say 10 oct 2010 and search only by age which is 12 so my result set should be:
name - a, d
age -12,12
marks-78,78

for this i am removing unwanted items

Any help in this regard will be helpful for me!

Please, Its urgent for me ...

13 years ago

JDBC and Relational Databases

Best way of handling multiple search Criteria

Hi All,

I have one requirement - There are say 4 search criteria and using permutation I can have combination of these search criteria to drill down my search results.

What will be the best way to achieve this in the backend. I have used query to get the search results now how can I get the desired search result using java!

13 years ago

JDBC and Relational Databases

Drop Down Menu Problem

Hi!

This may be of some help for identifying the problem:

Following is the header.jsp :

<%@ page contentType="text/html; charset=utf-8" language="java"
import="java.sql.*" errorPage=""%>
<%@ page import="java.util.*"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ page import="com.dpcm.data.DPCMLoginResult"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>DPCM</title>
<link rel="stylesheet" href="header_navigation.css" />
<link rel="stylesheet" href="css/dpcm_style.css" />
<script type='text/javascript' src='javascript/jquery.js'></script>
<link rel="stylesheet" href="css/jquery-ui.css" />
<link rel="stylesheet" href="css/jquery.ui.datepicker.css" />
<script type='text/javascript' src='javascript/jquery-ui.js'> </script>
<script type="text/javascript" src="javascript/jquery.ui.datepicker.js"></script>
<script type='text/javascript' src='javascript/jquery.ui.core.js'> </script>
<script type='text/javascript'>
var timeout = 500;
var closetimer = 0;
var ddmenuitem = 0;
function jsddm_open()
{
jsddm_canceltimer();
jsddm_close();
ddmenuitem = $(this).find('ul').css('visibility', 'visible');}
function jsddm_close()
{
if(ddmenuitem) ddmenuitem.css('visibility', 'hidden');
}
function jsddm_timer()
{ closetimer = window.setTimeout(jsddm_close, timeout);}
function jsddm_canceltimer()
{ if(closetimer)
{ window.clearTimeout(closetimer);
closetimer = 0;}}
$(document).ready(function()
{ $('#jsddm > li').bind('mouseover', jsddm_open)
$('#jsddm > li').bind('mouseout', jsddm_timer)});
document.onclick = jsddm_close;
</script>
</head>
<body>
<div id="header">
<%
DPCMLoginResult loginBean = new DPCMLoginResult();
loginBean = (DPCMLoginResult)session.getAttribute("getData");
%>
<table border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td></td>
<td align="right">
<div class="underlinemenu" align="right">
<ul>
<li><a href="dpcm_login.jsp"> Logout </a> | <a href="#">FAQs</a></li>
</ul>
</div>
</td>
</tr>
<tr>
<td align="left">
<h2>D P C M</h2>
</td>
<td align="right">Welcome,${getData.firstName}
${getData.lastName}</td>
<td></td>
</tr>
</table>
</div>
<c:forEach var="role" items="${getData.roleID}">
<ul id="jsddm">
<c:if test="${role=='1'}">
<li><a href="#">Moderator</a>
<ul>
<li><a href="redirect.do?operationType=search">Assign SPRs</a></li>
<li><a href="#">View SPRs</a></li>
<li><a href="dpcm_moderator_dashboard.jsp">Dashboard</a></li>
<li><a href="#">Reports</a></li>
</ul>
</li>
</c:if>

Below is the page I am using the header.jsp for having menu on this page.

Any kind of help in this is much appreciated by me. Thanks for Vijitha for seeing it

13 years ago

JSP

Drop Down Menu Problem

Hi All,

I have one problem in displaying a drop down menu.
I have created one header.jsp in which there is a drop down menu code.

Now, there is second jsp say home.jsp in which i am including header.jsp. But the problem is my drop down menu is getting hidden behind the page elements say a table having form.

Please, help me out solving this.

[code of header.jsp includes javascript code]

13 years ago

JSP

Storing input labels in database

Hi Thank you both of you for the resolution. I was thinking about the database, so that if I have to make any change I can directly change in the database. But there will be an additional overhead of data fetching.
Yes Jeanne I am aware of JDBC.

I was unaware of <fmt:message> tag. Thank you both of you for guidance

13 years ago

JSP

Storing input labels in database

Hi All,

I have one issue :

I have a form say for login and I have two fields login id and password. Now what I want is to save the labels attached to these fields in database. Can anyone help me regarding this how to fetch the associated lables from database.

I want some thing like below:

Example:

13 years ago

JSP

Best way to capture HTML form data

Thank you guys for your replies. I have understood your points. Just one clarification will following be a worth for a small web application

JSP (View) - sending data
1 servlet controller which will redirect to different servlets based upon say some hidden parameter.
Bean classes to capture data which will then interact with database codes to do database things.

Actually I just need one servlet where requests from jsp will be redirected from that servlet will call other business logic classes.

13 years ago

Servlets

Best way to capture HTML form data

Hi All,
What is the best way to capture HTML form data in servlet. What I mean is I don't want to directly say request.getParameter("x") in servlet. I want to create one class which can capture the form data and I can use that object in that servlet class.

Is it the correct approach? and what other approach I can use it.

I have worked on MVC Design pattern earlier but need to know how can I enhance this I mean capturing of data not directly in a servlet.

Note: I dont want struts, springs, Hibernates.

13 years ago

Servlets

javax.ejb.TransactionRolledbackLocalException

Hi, I am getting the following exception. I am unable to rectify it can anyone help me in this regard. I am working with Weblogic 8.1 EJB 2.0

I was trying to work around with CMP-CMR and here I am getting this exception.

Error 500--Internal Server Error
java.rmi.RemoteException: EJB Exception: ; nested exception is:
javax.ejb.TransactionRolledbackLocalException: EJB Exception: ; nested exception is: java.lang.NullPointerException
at weblogic.ejb20.internal.EJBRuntimeUtils.throwRemoteException(EJBRuntimeUtils.java:102)
at weblogic.ejb20.internal.BaseEJBHome.handleSystemException(BaseEJBHome.java:307)
at weblogic.ejb20.internal.BaseEJBObject.postInvoke(BaseEJBObject.java:284)
at weblogic.ejb20.internal.StatelessEJBObject.postInvoke(StatelessEJBObject.java:168)
at com.order.session.order_hvhkpl_EOImpl.addOrderDetails(order_hvhkpl_EOImpl.java:108)
at com.order.session.order_hvhkpl_EOImpl_CBV.addOrderDetails(Lcom.order.dto.OMOrderDTO;)Lcom.order.dto.OMOrderDTO;(Unknown Source)
at com.order.processor.OMProcessor.doGet(OMProcessor.java:56)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1077)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:465)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:348)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:7047)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3902)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2773)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:224)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:183)
Caused by: javax.ejb.TransactionRolledbackLocalException: EJB Exception: ; nested exception is: java.lang.NullPointerException
at weblogic.ejb20.internal.EJBRuntimeUtils.throwTransactionRolledbackLocal(EJBRuntimeUtils.java:247)
at weblogic.ejb20.internal.BaseEJBLocalHome.handleSystemException(BaseEJBLocalHome.java:246)
at weblogic.ejb20.internal.BaseEJBLocalObject.postInvoke(BaseEJBLocalObject.java:326)
at com.order.entity.OrderManagementEntity_2oq38n_ELOImpl.getValues(OrderManagementEntity_2oq38n_ELOImpl.java:57)
at com.order.session.OrderManagemetBean.addOrderDetails(OrderManagemetBean.java:59)
at com.order.session.order_hvhkpl_EOImpl.addOrderDetails(order_hvhkpl_EOImpl.java:98)
... 14 more
Caused by: java.lang.NullPointerException
at com.order.entity.OrderManagementCMPBean.getValues(OrderManagementCMPBean.java:78)
at com.order.entity.OrderManagementEntity_2oq38n_ELOImpl.getValues(OrderManagementEntity_2oq38n_ELOImpl.java:45)
... 16 more

14 years ago

BEA/Weblogic

Best way to generate Primary Key with CMP- Entity Bean (EJB 2.0)

Hi,

Which is the best way to generate a primary key. Say, for example I have one table Student and in that I have a student Id. Now how can I generate it as an automated key.

I don't want to use sequencing or auto increments. I want to do with a business logic, so how can I achieve that?

14 years ago

EJB and other Jakarta /Java EE Technologies

java.lang.NoSuchMethodError

ya i have added that in remote interface and bean class.

I dont know why it is happening any idea where could be I am making mistake?

Below is my servlet code:

/**
*
*/
package com.order.processor;
/**
*
*/
import javax.rmi.PortableRemoteObject;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Hashtable;
import java.lang.String;
import javax.naming.*;
import com.order.session.*;
import com.order.dto.OMOrderDTO;
/**
* Servlet implementation class OMProcessor
*/
public class OMProcessor extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* Set of variables declaration.
*/
private String operation;
private OrderManagementHome home;
private OrderManagement omRemote;
private OMOrderDTO omDTO = new OMOrderDTO();
public OMProcessor() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
PrintWriter out = response.getWriter();
//operation = request.getParameter("create");
//if(operation.equals("create")){
omRemote = initialization();
//}
setInDTO(request);
String name = omRemote.sayHello("ankit");
out.println(name);
if(operation.equals("view")){
}
}
public void setInDTO(HttpServletRequest request){
omDTO.setName("ankit");
/*omDTO.setName( request.getParameter("name"));
omDTO.setCity(request.getParameter("city"));
omDTO.setState(request.getParameter("state"));
omDTO.setCountry(request.getParameter("country"));
omDTO.setContactNo(Long.valueOf(request.getParameter("contact")));
omDTO.setAddress(request.getParameter("address"));
omDTO.setZip(Integer.valueOf(request.getParameter("zip")));
omDTO.setSubscription(Integer.valueOf(request.getParameter("subscription")));
omDTO.setDate((Date)request.getParameter("country"));
*/
}
public OrderManagement initialization() {
try
{
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFactory");
env.put(Context.SECURITY_PRINCIPAL, "ankit");
env.put(Context.SECURITY_CREDENTIALS,"omsai123");
env.put(Context.PROVIDER_URL,"t3://localhost:7001");
System.out.println("Context Created");
Context initial = new InitialContext(env);
Object objref = initial.lookup("OrderApplication") ;
System.out.println("context created");
home =
(OrderManagementHome)PortableRemoteObject.narrow(objref,
com.order.session.OrderManagementHome.class);
//omRemote = home.create();
return home.create();
}
catch (Exception ex)
{
System.err.println("Caught an unexpected exception!");
ex.printStackTrace();
}
return null;
}
}

14 years ago

BEA/Weblogic

java.lang.NoSuchMethodError

hi everyone,

I am getting following exception while running my servlet. I have deployed my ejb jar and application war on weblogic server 8.1 sp6.

Using jdk 1.4 version.

It will be great if some one can help me resolve with this.

java.lang.NoSuchMethodError: com.order.session.OrderManagement.sayHello(Ljava/lang/String;)Ljava/lang/String;
at com.order.processor.OMProcessor.doGet(OMProcessor.java:57)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:971)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:402)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:305)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6350)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:317)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3635)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2585)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)

14 years ago

BEA/Weblogic

How to run a client...

Hey I finally ran my first EJB example.

Problem was I was having weblogic service file in my lib (in eclipse).

I removed that and it worked ..

Thanks a lot for your help ulf

14 years ago

EJB and other Jakarta /Java EE Technologies

How to run a client...

hmmmm thanks Ulf for your help and time. I have reached till this point:

package com.client;
import java.util.Hashtable;
import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
import com.ejb.Converter;
import com.ejb.ConverterHome;
public class ConverterClient
{
public static void main(String[] args)
{
try
{
Hashtable<String, String> env = new Hashtable<String, String>();
env.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFactory");
env.put(Context.SECURITY_PRINCIPAL, "ankit");
env.put(Context.SECURITY_CREDENTIALS,"omsai123");
env.put(Context.PROVIDER_URL,"t3://localhost:7001");
System.out.println("Context Created");
Context initial = new InitialContext(env);
Object objref = initial.lookup("MyConverter") ;
ConverterHome home =
(ConverterHome)PortableRemoteObject.narrow(objref,
com.ejb.ConverterHome.class);
Converter currencyConverter = home.create();
double amount = currencyConverter.dollarToYen(100.00);
System.out.println(String.valueOf (amount));
amount = currencyConverter .yenToEuro(100.00);
System.out.println(String.valueOf (amount));
currencyConverter.remove();
}
catch (Exception ex)
{
System.err.println("Caught an unexpected exception!");
ex.printStackTrace();
}
}
}

What's this exception now

Exception in thread "Main Thread" java.lang.NoClassDefFoundError: weblogic/kernel/KernelStatus
at weblogic.jndi.Environment.<clinit>(Environment.java:73)
at weblogic.jndi.WLInitialContextFactory.getInitialContext(WLInitialContextFactory.java:117)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:667)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:247)
at javax.naming.InitialContext.init(InitialContext.java:223)
at javax.naming.InitialContext.<init>(InitialContext.java:197)
at com.client.ConverterClient.main(ConverterClient.java:23)

I am really tired working on this from days....

I really appreciate your time and kindness

14 years ago

EJB and other Jakarta /Java EE Technologies