Hi Pieter,
Thanks for the reply
and to take that particular entity i need a key a primary key which i
have made but how to use and get that key
and i m using servlet for handling my submissions
Here is the code for that
package com.purchase.sample.client;
import java.io.IOException;
import javax.jdo.PersistenceManager;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@SuppressWarnings("serial")
public class purchase extends HttpServlet
{
public void doPost(HttpServletRequest req, HttpServletResponse
resp) throws IOException
{
String itemname = req.getParameter("itemname");
int itemqty = Integer.parseInt(req.getParameter("itemqty"));
int unitprice =
Integer.parseInt(req.getParameter("unitprice"));
int totprice = itemqty * unitprice;
String comments = req.getParameter("comments");
String mgrcomments = req.getParameter("mgrcomments");
String itcomments = req.getParameter("itcomments");
java.text.DateFormat timedate
=java.text.DateFormat.getDateInstance(java.text.DateFormat.FULL);
String timedate1 = timedate.format( new java.util.Date() );
PurchaseInfo pinfo = new PurchaseInfo(itemname, itemqty,
unitprice, totprice, comments, mgrcomments, itcomments, timedate1);
PersistenceManager pm = PMF.get().getPersistenceManager();
try
{
pm.makePersistent(pinfo);
}
finally
{
pm.close();
}
resp.sendRedirect("/UserType.jsp");
}
}
and this the code of JSP file from which it will get values
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ page import="java.util.List" %>
<%@ page import="javax.jdo.JDOHelper" %>
<%@ page import="javax.jdo.PersistenceManager" %>
<%@ page import="javax.jdo.PersistenceManagerFactory" %>
<%@ page import="com.purchase.sample.client.PurchaseInfo" %>
<%@ page import="com.purchase.sample.client.PMF" %>
<%@ page import="com.google.gwt.i18n.client.DateTimeFormat"%>
<%@ page import= "java.util.Date"%>
<html>
<head>
<link type="text/css" rel="stylesheet" href="/stylesheets/
main.css" />
<script type="text/javascript">
funtion funedit()
{
<%
PersistenceManager pm1 = PMF.get().getPersistenceManager();
String query1 = "select item from " + PurchaseInfo.class.getName() +
"where key = 12";
List<PurchaseInfo> purchase1 = (List<PurchaseInfo>)
pm1.newQuery(query1).execute();
for (PurchaseInfo p1 : purchase1)
{
%>
document.getElementById("itemname").value = <!--%=p1.getitem()%>
<%
}
%>
}
</script>
</head>
<body class="body">
<div class="marginleft">
<a href="UserType.jsp" style="font-size: medium;font-weight: 20;text-
decoration: none;">HOME </a>|
<span style="font-size: medium;font-weight: 20;">Welcome, Employee
</
span>
</div>
<%
PersistenceManager pm = PMF.get().getPersistenceManager();
String query = "select from " + PurchaseInfo.class.getName();
List<PurchaseInfo> purchase = (List<PurchaseInfo>)
pm.newQuery(query).execute();
if (purchase.isEmpty())
{
%>
<p>There are no requests</p>
<%
}
else
{
for (PurchaseInfo p : purchase)
{
%>
<table border="1" width="600">
<caption align="left"><b>Request Made</b></caption>
<tr>
<th> Key Value</th>
<th> Item Name</th>
<th> Item Quantity</th>
<th> Item UnitPrice</th>
<th> Item TotalPrice</th>
<th> Employee Remarks</th>
<th> Press to Edit </th>
<!-- th> Employee date</th-->
</tr>
<tr>
<td>
<blockquote><%= p.getkey()%></blockquote>
</td>
<td>
<blockquote><%= p.getitem()%></blockquote>
</td>
<td>
<blockquote><%= p.getqty()%></blockquote>
</td>
<td>
<blockquote><%= p.getunit_price()%></blockquote>
</td>
<td>
<blockquote><%= p.gettotal_price()%></blockquote>
</td>
<td>
<%= p.getcomments()%>
</td>
<td >
<blockquote><input type="button" value="Edit"
id="editbtn"
onclick="javascript:funedit();">
</blockquote>
</td>
<!--td>
<blockquote><!--%= p.getdatetime()%></blockquote>
</td-->
</tr>
</table>
<br/>
<%
}
}
pm.close();
%>
<form action="/purchase1/sign" method="post" name="gui">
<table>
<tr>
<td>Enter Item Name</td>
<td><div><input type="text" name="itemname"></div></td>
</tr>
<tr>
<td>Enter Item Quantity</td>
<td><div><input type="text" name="itemqty"></div></td>
</tr>
<tr>
<td>Enter Unit Price</td>
<td><div><input type="text" name="unitprice"></div></td>
</tr>
<tr>
<td>Employee Remarks</td>
<td>
<div><input type="text" name="comments"></div>
</td>
</tr>
<tr>
<td> </td>
<td>
<div class="Button" align="center"><input type="submit" id="add"
value="ADD" width="25" height="10"/>
</div>
</td>
</tr>
</table>
</form>
<div class="marginleft">
<a href="UserType.jsp" style="font-size: medium;font-weight: 20;"
>HOME</a>
</div>
</body>
</html>
PLease see the code and suggest me the edit and also update
functionality how to implement
Thank You So Much
On Aug 12, 12:02 pm, Pieter Coucke <[email protected]> wrote:
> If you want to edit an entity, you just need to get it from the datastore,
> set some properties on it and the PersistenceManager will save this changes
> when you call pm.close().
>
> You might consider using a framework like Spring for handling form
> submissions. You can also use a normal Servlet, but this can become
> difficult to maintain.
>
> On Thu, Aug 12, 2010 at 7:20 AM, prakhil samar <[email protected]>wrote:
>
>
>
>
>
>
>
> > Hi Ikai,
>
> > I m waiting for your reply is there anything that i didnt explained
> > correctly, please do tell me
>
> > Thanks
>
> > On Aug 11, 9:26 am, prakhil samar <[email protected]> wrote:
> > > Thanks Ikai,
>
> > > I had already read some of the docs from google code about java and
> > > data stores
> > > I had stored and retrived my data through data store but want a edit
> > > and update functionality in my application for that i have to use a
> > > primary key
>
> > > Written this code --
> > > @PrimaryKey
> > > @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
> > > private Key key;
>
> > > I made a java page in which i m writing all my setter and getter
> > > methods and this key
> > > Then, I made a jsp page and in that made a form for a user to enter
> > > the data and as he press submit it will display on the same page his
> > > data entered in a table.
> > > Now i want to edit the data and show it in the form so that user can
> > > edit and then update the data
>
> > > I have made this sample application, please visit this link
>
> > > http://pur10app.appspot.com/
>
> > > Here in Employee Form i want the edit and update functionality
>
> > > Please help me out
>
> > > Thanks, in advance
>
> > > On Aug 10, 10:38 pm, "Ikai L (Google)" <[email protected]> wrote:
>
> > > > You'll want to read the docs and do the tutorials that are available.
> > Many
> > > > new developers find that a self-guided approach is the most effective
> > for
> > > > learning a new skill.
>
> > > >http://code.google.com/appengine/docs/java/gettingstarted/https://sit.
> > ..
>
> > > > On Mon, Aug 9, 2010 at 9:15 PM, prakhil samar <[email protected]
> > >wrote:
>
> > > > > Hi all
> > > > > I m new to Google App Engine and JAVA i m building an applciation in
> > > > > which data is to be saved and retrieved as and when required (Add,
> > > > > Edit, Update functionality is must). please someone tell me how to do
> > > > > that, i m using Eclipse IDE and java language, I have Added the data
> > > > > in data store but how to edit and then update that data PLease help
> > > > > me, its urgent..........
>
> > > > > --
> > > > > You received this message because you are subscribed to the Google
> > Groups
> > > > > "Google App Engine" group.
> > > > > To post to this group, send email to
> > [email protected].
> > > > > To unsubscribe from this group, send email to
> > > > > [email protected]<google-appengine%[email protected]>
> > <google-appengine%2bunsubscrib[email protected]>
> > > > > .
> > > > > For more options, visit this group at
> > > > >http://groups.google.com/group/google-appengine?hl=en.
>
> > > > --
> > > > Ikai Lan
> > > > Developer Programs Engineer, Google App Engine
> > > > Blog:http://googleappengine.blogspot.com
> > > > Twitter:http://twitter.com/app_engine
> > > > Reddit:http://www.reddit.com/r/appengine-Hide quoted text -
>
> > > - Show quoted text -
>
> > --
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>
> --
> Pieter Coucke - Onthoo BVBA <http://www.onthoo.com/>
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