How to access previous page in a database

Hi,
I am using struts now and MySQL as my database.
the problem is, I dont know how will I show the first page up to the last page of my database, using previous and next. My database consists of employees details, I want to show 10 rows of employees per page.

Maintain the beginRow and endRow concept..
use query the data from beginCounter numbet to EndCounter
I have used the same logic using JSTL <sql> tag
i have also maintain the paging

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Hi All,
I am making a report in which I need to compare my "Registration Start Date" with "Registration End Date" of previous registration of same customer. This is to check if there are gaps between any customer's registrations.
In scenario shown below, I want to filter out RegID '1' as it comes after a gap from previous registration(RegID '3') of the same customer.
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1 1 01/04/2005 07/04/2005
2 2 01/03/2005 29/05/2005
3 1 21/03/2005 29/03/2005
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Thanks & Regards,
Ahsan

I Assume the following is your sample data
Table Name: Tab1
RegID CustID Registration_Start      Registration_End
1      1      01/04/2005           07/04/2005
2      2      01/03/2005           29/05/2005
3      1      21/03/2005           29/03/2005
4      1      01/03/2005           21/03/2005
Note : For the Regid "4" I have changed the Registration_End to 21/03/2005. It was earlier 21/04/2005.
Coming to the query, you need to generate the list of regid that have gaps.
Try the following query:
SELECT c.*
FROM tab1 c
WHERE c.reg_id NOT IN (
SELECT a.reg_id
FROM tab1 a, tab1 b
WHERE a.cust_id = b.cust_id
AND a.registration_end = b.registration_start
Note: I am sorry I didn't have access to the data base to execute my query. Correct me if I am wrong.
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Edited by: Raguraman on 25-Jan-2013 08:59

How to access specific row of a database table.

hi all,
i am saving all the hr tables in a internal table.
say, mtable = 'pa0002' is the content of mtable on looping above internal table.
LOOP AT i_itf_list INTO wa_list. "wa_list contains list of hr tables.
   mtable = wa_list-tabname.
   LOOP AT persno. "persno contains list of personal numbers.
"how to acess particular row of (mtable) dynamically where pernr = persno-pernr."
   ENDLOOP.
ENDLOOP.
thanks.

Hi,
Use below code for your reference.
data : ref_table_des type ref to cl_abap_structdescr,
          dref type ref to data.
field-symbols : <itab> type standard table,
                        <wtab> type any.
data : mtable type tabname.
LOOP AT i_itf_list INTO wa_list. "wa_list contains list of hr tables.
clear mtable.
mtable = wa_list-tabname.
LOOP AT persno. "persno contains list of personal numbers.
ref_table_des ?= cl_abap_typedescr=>describe_by_name( mtable ).
create data dref type handle ref_table_des.
assign dref->* to <wtab>.
create data dref like standard table of <wtab>.
assign dref->* to <itab>.
***if you want to select multople rows use below select***********
select * from (mtable)
into table <itab>
where pernr = persno-pernr.
********if you want to select single row use below select************
select single * from (mtable)
into <wtab>
where pernr = persno-pernr.
ENDLOOP.
ENDLOOP.
Vijay

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Hi,
For creating record I am using multi-step flow (train).
I have three page and I want to navigate the page via multi-step flow (train).
I followed the steps given in the Toolbox Tutorial of create purchase order and
Locator Element: Page/Record Navigation in developer's guide.
page1=/uttara/oracle/apps/uttaraimc/createcitizen/webui/PropertyCreatePG
page2=/uttara/oracle/apps/uttaraimc/createcitizen/webui/HouseDetailsCreatePG"
page3=/uttara/oracle/apps/uttaraimc/createcitizen/webui/EducationCreatePG"
The page1 is navigated via 'Create' button in CitizenSearchPG
Now on this Page1, when I clicks on the 'Next' button (to navigate to the next page in the same multi-step flow) I am getting following exception and its not navigating to page2.
Error: Cannot Display Page
You cannot complete this task because one of the following events caused a loss of page data:
* You accessed this page using the browser's navigation buttons (the browser Back button, for example).
* Your login session has expired.
* A system failure has occurred.
To proceed, please select the Home link at the top of the application page to return to the main menu. Then, access this page again using the application's navigation controls (menu, links, and so on) instead of using the browser's navigation controls like Back and Forward.
Here is the code for CreateFooterCO,
public void processRequest(OAPageContext pageContext, OAWebBean webBean)
super.processRequest(pageContext, webBean);
OANavigationBarBean navBean =
(OANavigationBarBean)webBean.findChildRecursive("NavBar");
if (navBean == null)
MessageToken[] tokens = { new MessageToken("OBJECT_NAME", "NavBar") };
throw new OAException("AK", "FWK_TBX_OBJECT_NOT_FOUND", tokens);
// Determine which page we're on so we can set the selected value. Each
// time we navigate to and within the flow, the URL includes a parameter
// telling us what page we're on.
int step = Integer.parseInt(pageContext.getParameter("ccStep"));
navBean.setValue(step);
// Figure out whether the "Submit" button should be rendered or not;
// this should appear only on the final page (Step 3).
OASubmitButtonBean submitButton =
(OASubmitButtonBean)webBean.findIndexedChildRecursive("Submit");
if (submitButton == null)
MessageToken[] tokens = { new MessageToken("OBJECT_NAME", "Submit") };
throw new OAException("AK", "FWK_TBX_OBJECT_NOT_FOUND", tokens);
if (step != 3)
submitButton.setRendered(false);
public void processFormRequest(OAPageContext pageContext, OAWebBean webBean)
super.processFormRequest(pageContext, webBean);
OAApplicationModule am = pageContext.getApplicationModule(webBean);
int currentStep = Integer.parseInt(pageContext.getParameter("ccStep"));
// This button should only be displayed on the final page...
if (pageContext.getParameter("Submit") != null)
// Simply telling the transaction to commit will cause all the Entity Object validation
// to fire.
// Note that you must commit before asking WF for the next page, because
// asking for the next page at this point will transition the WF to a
// completed state, which means you won't be able to navigate back
// if there are errors during the commit processing.
am.invokeMethod("apply");
TransactionUnitHelper.endTransactionUnit(pageContext, "citizenCreateTxn");
// Don't forget to call this even on the last page so the activity associated with
// this page completes and the Workflow transitions appropriately.
String nextPage = OANavigation.getNextPage(pageContext);
// For the final page, Workflow should be returning null -- and the user
// can select the "Submit" button only on the last page. Something's
// wrong.
if (nextPage != null)
throw new OAException("AK", "FWK_TBX_T_WF_UNEXPECTED_TRANS");
else // we've just completed the flow
// Assuming the "commit" succeeds, we'll display a Confirmation dialog that takes
// the user back to the main "Purchase Orders".
/* String poNumber = (String)pageContext.getTransactionValue("PO_NUMBER");
MessageToken[] tokens = { new MessageToken("PO_NUMBER", poNumber),
new MessageToken("PO_APPROVER", pageContext.getUserName()) };
OAException confirmMessage = new OAException("AK", "FWK_TBX_T_PO_CREATE_CONFIRM", tokens);
OADialogPage dialogPage = new OADialogPage(OAException.CONFIRMATION,
confirmMessage,
null,
pageContext.getApplicationJSP() + "?OAFunc=FWK_TOOLBOX_PO_SUMMARY_CR&retainAM=Y",
null);
pageContext.redirectToDialogPage(dialogPage);
else if ("goto".equals(pageContext.getParameter(EVENT_PARAM)) &&
"NavBar".equals(pageContext.getParameter(SOURCE_PARAM)))
// Note that the OANavigationBean publishes a "goto" event paremeter when
// either the Back or Next button is pressed. You need to determine which way to
// go based on the related "value" parameter.
// Also note the check of "source" above to ensure we're dealing with the
// page-level navigation here and not table-level navigation which is
// implemented with the same Bean configured differently.
int target = Integer.parseInt(pageContext.getParameter("value"));
String workflowResult;
if (target < currentStep)
workflowResult = "PREVIOUS";
else
workflowResult = "NEXT";
String nextPage = OANavigation.getNextPage(pageContext, workflowResult);
if (nextPage != null)
HashMap params = new HashMap(1);
params.put("ccStep", IntegerUtils.getInteger(target));
pageContext.setForwardURL(pageContext.getApplicationJSP() + "?" + nextPage, // target page
null,
KEEP_MENU_CONTEXT,
"", // No need to specify since we're keeping menu context
params, // Page parameters
true, // Be sure to retain the AM!
ADD_BREAD_CRUMB_NO, // Do not display breadcrumbs
OAException.ERROR); // Do not forward w/ errors
else
throw new OAException("AK", "FWK_TBX_T_WF_NO_NEXT_PAGE");
else if (pageContext.getParameter("Cancel") != null)
am.invokeMethod("rollbackCitizenInfo");
// Remove the "in transaction" indicator
TransactionUnitHelper.endTransactionUnit(pageContext, "citizenCreateTxn");
pageContext.forwardImmediately("OA.jsp?page=/uttara/oracle/apps/uttaraimc/createcitizen/webui/CreateCitizenSearchPG",
null,
OAWebBeanConstants.KEEP_MENU_CONTEXT,
null,
null,
true, // retain AM
OAWebBeanConstants.ADD_BREAD_CRUMB_NO);
How to resolve this issue?
please suggest.
Thanks & Regards,
Sagarika

Sagarika,
Please go thru the dev guide which explains the train flow in the multistep update exercise. Compare the steps with ur implementation.
- Senthil

VB 2008, CR component and MS Acc: how to access with database(not user) pwd

These are the detail of the query:
1. MS Access 2003 and later database via OLE DB provide for entry of a u201Cdatabase passwordu201D to provide additional protection.
2. In VB 2005 and in VB2008 environment I have managed to establish a connection with a database password and open recordsets using ADO connection. See code below.
Note. stPassword is user password and stDBPassword is database password with the following code:
With cnn
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          .ConnectionString "Provider=Microsoft.Jet.OLEDB.4.0; Password=" & stPassword & ";Data Source=T:\CPI.mdb;User ID=" & stUser & ";Persist Security Info=False;" & "Jet OLEDB:System database=t:\cpi.mdw;Jet OLEDB:Database Password=" & stDBPassword
          .Open()
End With
3. When using Crystal Reports component supplied with VS 2008 I can only provide USER NAME and USER PASSWORD. No information is available how and where to enter DATABASE PASSWORD to the Crystal Reports component. As a result, Crystal Reports Viewer starts to run. Obviously access is denied because no DATABASE PASSWORD has been provided to the component. A common dialog comes up to enter database password.
4. User does not necessarily need know the DATABASE password and I am not interested in providing the database password to every user who runs reports. In this project database password serves as a form of protection from tampering with the database structure and contents through the use MS Access to access the database.
5. Here is the code to demonstrate logon via Crystal Component described above:
Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.Shared
And then in a sub:
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    cnnInfo.UserID = stUser
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No place to input DATABASE password!!!
Does anyone know how can I input database password or provide a connection string or maybe ADO connection object which is opened within the project code.

It seems like it is not possible to set the DB level password with the CR Visual Studio bundled version (as stated in the following KB c2010267). You would need to use the full version, and use the code below:
Symptom
A VB .NET application uses Crystal Reports for Visual Studio .NET as the reporting development tool.
A report is created that connects to a password protected Microsoft Access Database.
How do you pass a password (for database level security) or a password and user ID (for user level security) at runtime using the different connection methods(Native/ODBC/OLEDB)?
Resolution
To pass the database level password or a user level
userid/password at runtime, use the following code
sample:
'Add the following namespaces to the top of the code
'page
Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.Shared
Dim crReportDocument As New ReportDocument()
Dim crConnectionInfo as New ConnectionInfo
Dim crtableLogoninfo As New TableLogOnInfo()
Dim CrTables As Tables
Dim CrTable As Table
crReportDocument = New CrystalReport1()
With crConnectionInfo
<**Insert code from below depending on the type of
connection and the version of Crystal Reports you are
using**>
End With
CrTables = crReportDocument.Database.Tables
For Each crTable in crTables
crTableLogonInfo.ConnectionInfo =
crConnectionInfo
CrTable.ApplyLogOnInfo(crTableLogOnInfo)
Next
CrystalReportViewer1.ReportSource =
crReportDocument
Database Level Security
" For Native and ODBC connections, use the following
code:
.Password = "Password"
" For OLEDB connections, use the following code:
.Password = chr(10) + "Password"
====================
NOTE:
You cannot set a database level password when
using Crystal Reports for Visual Studio .NET 2002 or
2003.
====================
User Level Security
" For ODBC and OLEDB connections, use the following
code:
.Password = "Password"
.UserID = "UserID"
For ODBC connections, in the ODBC data source, you
have to point the system database to the appropriate
MDW file. In addition, click the 'Advanced' button and
specify the User ID and password.
====================
NOTE:
You cannot set a user level password when using
a native connection with Crystal Reports 9.2 and
Crystal Reports for Visual Studio .NET 2002 or 2003.
This KB is valid for:
CRYS REPORTS VS .NET.9.1
CR FOR VS .NET 2005
CR FOR VS .NET 2008

How to access previous page in a database

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