Struts bc4j

Sometimes i got the following error:
oracle.jbo.PCollException: JBO-28012: Could not add key column keycont to table PS_KimModule_1
..... at oracle.jbo.pcoll.OraclePersistManager.createKeyInfoTable(....)
in conjunction with:
ORA-00054:resource busy and ayquire with NOWAIT specified
This is within a STRUTS/JSP/BC4J application.
The BC4J Application Module is named KimModule.
The error occures when querying a set of 1500 rows from a table and presenting the result as a table.
No Bc4J Tags are used.
BTW: i find the design of BC4J a bad choice, since it relies on the creation of (randomly) sequentially generated tables E.g. PS_KimModule_1

This means that you have put the <controller> element in the wrong order in the XML file. If you look in the struts-config_1_1.dtd, you'll see declared there the expected order of child elements for the <struts-config> element. You need to respect this order correctly or your XML file is not valid.

Similar Messages

Generated STRUTS BC4J App not able to create view row

I have build a BC4J AppModul with JDeveloper 9.03. The AppModul works fine in the testerapp and also with a UIX generated application. However, with the generated STRUTS BC4J app i allways get the following error message JBO-25013: Too many objects match the primary key oracle.jbo.Key[78 ] when creating a new entry (Browse/New/Update). The exception is thrown in the oracle.jbo.html.struts11.actions.UpdateAction.java populateRow() method. The related entity class builds the primary key with oracle.jbo.server.SequenceImpl in its create() method. Any idea ?

I think the ViewObject you operated in your ApplicationModule contains two or more Rows has the same
primary_keys.Check that!!

Anyone deploy ADF(UIX,Struts,BC4J) to 9iAS 9.02?

Has anyone been successful in deploying a ADF 10g app using UIX/Struts/BC4J to Oracle 9iAS 9.02?

Deploying a UIX application directly from JDeveloper 10g to iAS 9.0.2 isn't supported out of the box. You can deploy directly to iAS 10g (9.0.4), standalone OC4J 10g (9.0.4) instances (one is included with JDeveloper 10g), iAS 9.0.3 Java edition, standalone OC4J 9.0.3, and selected third party servlet engines.
There are two issues that you would need to workaround to deploy a 10g ADF application to iAS 9.0.2. One issue is that 9.0.2 versions of some of the ADF libraries (BC4J and UIX for example) are on the global application.xml classpath of the iAS 9.0.2 customer home OC4J instance. You would need to manually upgrade your 9.0.2 instance to have all of the ADF 10g libraries. The second issue is that some of the ADF 10g libraries (like BC4J) require JDK 1.4, and iAS 9.0.2 shipped with an earlier version of the JDK. I personally don't know if using iAS 9.0.2 with JDK 1.4 is a supported combination, but I will try to find out for you.
By the way, you might wonder why we don't have these same problems with with iAS 9.0.3 and 9.0.4 since the ADF 10g libraries are more recent than what shipped with those releases. In OC4J 9.0.3 and 9.0.4 there is a "search-local-classes-first" option in orion-web.xml that allows classes provided as part of a web application to be loaded in preference to what is on the global application.xml classpath. We use this feature to deploy ADF 10g applications (and include the JARs for some of the ADF libraries in the WEB-INF/lib of the application). In addition, there is a tool called the ADF Installer that is part of JDeveloper that will upgrade versions of some of the backward compatible ADF libraries (like BC4J) in the global application.xml.

Struts+ bc4j insensitive case search using queryAction

I'm working in a new project using Struts+bc4j.
the queryAction, when it executes a query using this attributes and applying a new viewcritteria, it works in a case-sensitive mode. I'm looking for a way to make it non-case-sensitive in a View OBject level.
Regards
Daniel Gonzalez

Change the query to do this e.g.
where lower(Emp.ENAME) = lower(:1) or whatever

10g UIX / Struts / BC4J

We are searching for best practices for developping secure web applications using uix / struts / bc4j that demonstrates different login scenario and connection pooling with the database. Did somebody find something in documentation ? or a great book that expose this problematic ?

Hi, I am also looking for a document or procedure like that.
Did you get any help, or found any way to do that ?
Can you share with me ?
I will appreciate if you could have some time to share the ideas ?

Help on Struts BC4J Framework

Hi Everybody,
I am new to BC4J Framework. I have enough experience in Java and JSP/Struts. Is there any guide which will explain me step by step development of an sample application using JDeveloper, Struts, BC4J and Oracle Database. I have tried to search the forum, but not able to find proper document. Please help.
Thanks & Regards,
Shailesh Joshi

Can anyone please tell me why in struts in most of the situations we are getting the error,
cannot find ActionForward and ActionMappings.You're getting the error because Struts isn't configured correctly. The solution is to configure Struts correctly.
~

Bussines rules problems using Struts + BC4J

Hi, I'm using struts + bc4j and I have some problems with the validations made on the entities.
Looks like sometimes, struts didn't shows the error message until the commit is made. But the problem is that on the navigator shows me the stack trace of the exception, but only when I do the commit of the transaction.
In the test of the application module, the business rules works perfectly.
If somebody can help me i will aprecciate it.
Thanks
Daniel Gonzalez

There are already some threads on this topic.
Unfortunately, they don't give solutions - not yet ;)
Custom Method Validator
addVetoableChangeListener for attribute doesn't seem to get fired
HTH,
Adrian

Urgent problem in struts bc4j app

The problem occurs between the Controller an the View Layer(can I debug there?) Anyway, I can see the data in the Action class, but not in the jsp page, there's just one row (the first).
Thank you.
I'm using the 9.0.3.3 build 1205
The Action class:
public class ShowneuebehauftrAction extends Action
public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response)
BC4JContext context = BC4JContext.getContext(request);
ViewObject vo = context.getApplicationModule().findViewObject("BehauftrNeu");
//here the output looks fine
Row r = vo.first();
while (r != null)
for (int i = 0; i < vo.getAttributeCount(); i++)
String attrName = vo.getAttributeDef(i).getName();
String attrVal = r.getAttribute(i).toString();
System.out.println(attrName + " = " + attrVal);
r = vo.next();
return BC4JUtils.getForwardFromContext(context, mapping);
And the jsp page:
<%@ page language="java" errorPage="errorpage.jsp" contentType="text/html;charset=windows-1252" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/webapp/DataTags.tld" prefix="jbo" %>
<html>
<head>
<META NAME="GENERATOR" CONTENT="Oracle JDeveloper">
<LINK REL=STYLESHEET TYPE="text/css" HREF="bc4j.css">
<TITLE>
<bean:message key="behauftr.title"/>
</TITLE>
</head>
<body>
<table border="0" bgcolor="#003399">
<tr>
<th><font color="white" size="3"><bean:message key="behauftr.nr"/></font></th>
<th><font color="white" size="3"><bean:message key="behauftr.wunschdatum"/></font></th>
<th><font color="white" size="3"><bean:message key="behauftr.status"/></font></th>
<th> </th>
</tr>
<jbo:RowsetIterate datasource="DataaccessModule.BehauftrNeu" userange="true" >
<tr bgcolor="#f3f3f3">
<td>
<jbo:ShowValue dataitem="Nr"/>
</td>
<td>
<jbo:ShowValue dataitem="Wunschdatum"/>
</a>
</td>
<td align="right">
<jbo:ShowValue dataitem="BasNr"/>
</td>
</tr>
</jbo:RowsetIterate>
</table>
</body>
</html>

There's another question: I tried to format a date field to SimpleDate format dd.MM.yyyy - in the Entity's and ViewObject's Attribute-Editor-Control-Hint.
It works fine in the BC-App-Module, but in the Action class there's the yyyy-MM-dd format back again (and of course in the jsp page as well). Does this have to be handled in the Action class?
But, more important, I still can't figure out why there's only one row in the jsp page - as described earlier -
Thanks in advance for your help.
Regards
gabriela

Struts bc4j date pick window problem

i'm using bc4j and struts in jdeveloper 9.0.3
i generated application using the wizard
running it using the jdeveloper oc4j works fine
when i deploy it to remote stand alone oc4j
the application work fine except for the date chooser button which suppose to open a window in which the user pick up a date. the button does not appear and there is a message "calendar for date entry assistance"
when i press the link and explorer error jump telling a run time error occurred (object expected).
a) i need a solution
b) how can i customize the calendar object

I've had problems similar to this when building portlets that use BC4J. When you put the same portlet on a page twice, the portal "parallel page engine" calls the portlet renderer with two threads that share the same HttpSession. (Very similar to your multi-frame case) I had to add some code like this in my renderer class:
HttpSession sess = request.getSession();
synchronized (sess) {
// fetch appmodule, do stuff, return appmodule
This effectively single-threads the usage of your ApplicationModule so that the multiple concurrent requests don't clobber eachother by executing queries, and moving the row pointer on your RowIterators and ViewObjects. But, it only single-threads it on a per-user basis, because we synchronized on the HttpSession.
Hope this helps...

To JDev Team : SQL generated, Struts, BC4J Admin, ...

Hi,
I've followed the Tutorial 'Generating a Struts-based JSP Application for an
Application Module', where I'm working with only one table.
When I run the 'main.html', on the left side ( navigator ), there are 'Browse' and 'Query' options.
Every time I click on 'Browse', I always have this error :
Error Message: JBO-26044: Error while getting estimated row count for view object TimesheetView1, statement
SELECT count(1) FROM (SELECT Timesheet.ts_id, Timesheet.ts_user, Timesheet.ts_code, Timesheet.ts_date, Timesheet.ts_hour
FROM timesheet Timesheet) ESTCOUNT
My config are :
* Win2K
* JAVA_HOME set to j2sdk1.4.1_01
* mySQL 3.23.49 with JDBC driver mysql-connector-java-2.0.14-bin.jar
* I use ultraDevHack=true as parameter within the URL
Even with 'ultraDevHack=true' parameter, the subselect still not working.
I've seen in the forum that JDev Team have tried with that parameter, and it worked,
but it didn't mention with which version of mySQL and which JDBC driver.
I would like to modify the above SQL into a simpler one 'SELECT COUNT(*) FROM timesheet'.
Anybody know how ?
The View Object Wizard didn't help me at all for the above SQL.
In fact I would like to fully controled, modified, or cuztomised all SQL generated.
Back to main.html, the header contains two buttons 'BC4J Admin' and 'Help'.
When I click on 'BC4J Admin', I have this :
500 Internal Server Error
OracleJSP: oracle.jsp.provider.JspCompileException:
Errors compiling:C:\usr\J2EE\JDEV\system9.0.3.1035\oc4j-config\application-deployments\bc4j\webapp\persistence\_pages\_wm\_bc4j.java
error: Invalid class file format in C:\j2sdk1.4.1_01\jre\lib\rt.jar(java/lang/Object.class). The major.minor version '48.0' is too recent for this tool to understand.
C:\usr\J2EE\JDEV\system9.0.3.1035\oc4j-config\application-deployments\bc4j\webapp\persistence\_pages\_wm\_bc4j.java:0: Class java.lang.Object not found in class com.orionserver.http.OrionHttpJspPage.
package _wm;
^
2 errors
Why is that ?
Out of scope, sometimes it's very slow accessing this forum ( 'Connection timed out' or 'The specified network name is no longer available' ...).
Any of you have the same problem ?
Is it possible to put some criterias within the Search, i.e. Sort by Date ?
Any help would be appreciated.

Hi,
I've followed the Tutorial 'Generating a Struts-based JSP Application for an
Application Module', where I'm working with only one table.
When I run the 'main.html', on the left side ( navigator ), there are 'Browse' and 'Query' options.
Every time I click on 'Browse', I always have this error :
Error Message: JBO-26044: Error while getting estimated row count for view object TimesheetView1, statement
SELECT count(1) FROM (SELECT Timesheet.ts_id, Timesheet.ts_user, Timesheet.ts_code, Timesheet.ts_date, Timesheet.ts_hour
FROM timesheet Timesheet) ESTCOUNT
My config are :
* Win2K
* JAVA_HOME set to j2sdk1.4.1_01
* mySQL 3.23.49 with JDBC driver mysql-connector-java-2.0.14-bin.jar
* I use ultraDevHack=true as parameter within the URL
Even with 'ultraDevHack=true' parameter, the subselect still not working.
I've seen in the forum that JDev Team have tried with that parameter, and it worked,
but it didn't mention with which version of mySQL and which JDBC driver.
I would like to modify the above SQL into a simpler one 'SELECT COUNT(*) FROM timesheet'.
Anybody know how ?
The View Object Wizard didn't help me at all for the above SQL.
In fact I would like to fully controled, modified, or cuztomised all SQL generated.
Back to main.html, the header contains two buttons 'BC4J Admin' and 'Help'.
When I click on 'BC4J Admin', I have this :
500 Internal Server Error
OracleJSP: oracle.jsp.provider.JspCompileException:
Errors compiling:C:\usr\J2EE\JDEV\system9.0.3.1035\oc4j-config\application-deployments\bc4j\webapp\persistence\_pages\_wm\_bc4j.java
error: Invalid class file format in C:\j2sdk1.4.1_01\jre\lib\rt.jar(java/lang/Object.class). The major.minor version '48.0' is too recent for this tool to understand.
C:\usr\J2EE\JDEV\system9.0.3.1035\oc4j-config\application-deployments\bc4j\webapp\persistence\_pages\_wm\_bc4j.java:0: Class java.lang.Object not found in class com.orionserver.http.OrionHttpJspPage.
package _wm;
^
2 errors
Why is that ?
Out of scope, sometimes it's very slow accessing this forum ( 'Connection timed out' or 'The specified network name is no longer available' ...).
Any of you have the same problem ?
Is it possible to put some criterias within the Search, i.e. Sort by Date ?
Any help would be appreciated.

UIX/Struts+BC4J Comparision

In one project, I'll develope a Thin-client Web-based appliation, this is my hypo architecture:
1. JSP+Struts+Tomcat+Oracle 9i
2. JSP+UIX+BC4J+Tomcat+Oracle 9i,
I'm a newbie to Oracle UIX, can anybody give me suggestion about the comparision between Struts and UIX ?
or How about the second architecture?
Welcome any comment/advice.
Thanks in advance.
Jack

You posted this question twice; see my answer to the other message.

Cpx error in struts-bc4j application

First of all, sorry about my english. I have a problem with a nom existing cpx file call "Modelo.cpx", the same name of the one of my proyects which have the bussiness components and java sources. The other proyect have all of the struts files like "struts-config" and jsp´s, also the "web.xml" is here.
My problent is with a struts pluging that take an ApplicationModule, and finaly release it using configuration.class and the methods "createRootApplicationModule" and "releaseApplicationModule". The funny thing is, when I run my application, I have an error, but when I reload the page in my browser everything goes perfectly.
In my second proyect exist the real cpx file that work correctly, is the cpx call from the web.xml.
This is the error:
500 Internal Server Error
oracle.jbo.NoXMLFileException: JBO-26001: XML File not found for the Container Modelo.cpx
     oracle.jbo.mom.ContainerDefImpl oracle.jbo.mom.DefinitionManager.loadProjectDefinition(java.lang.String)
          DefinitionManager.java:751
     oracle.jbo.mom.ContainerDefImpl oracle.jbo.mom.DefinitionManager.loadProjectDefinition()
          DefinitionManager.java:793
     void oracle.jbo.mom.DefinitionManager.initManager()
          DefinitionManager.java:137
     void oracle.jbo.uicli.mom.JUMetaObjectManager.<init>()
          JUMetaObjectManager.java:57
     oracle.jbo.uicli.mom.JUMetaObjectManager oracle.jbo.uicli.mom.JUMetaObjectManager.getJUMom()
          JUMetaObjectManager.java:131
     oracle.jbo.common.ampool.SessionCookie oracle.jbo.http.HttpContainer.findSessionCookie(javax.servlet.http.HttpSession, java.lang.String, java.lang.String, java.util.Properties)
          HttpContainer.java:541
     boolean oracle.jbo.html.struts11.BC4JRequestProcessor.initPageFromPath(oracle.jbo.html.struts11.BC4JActionMapping, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
          BC4JRequestProcessor.java:222
     org.apache.struts.action.ActionMapping oracle.jbo.html.struts11.BC4JRequestProcessor.processMapping(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, java.lang.String)
          BC4JRequestProcessor.java:124
     void org.apache.struts.action.RequestProcessor.process(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
          RequestProcessor.java:234
     void org.apache.struts.action.ActionServlet.process(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
          ActionServlet.java:1292
     void org.apache.struts.action.ActionServlet.doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
          ActionServlet.java:510
     void javax.servlet.http.HttpServlet.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
          HttpServlet.java:760
     void javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
          HttpServlet.java:853
     void com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.ServletRequestDispatcher.invoke(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
          ServletRequestDispatcher.java:721
     void com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.ServletRequestDispatcher.forwardInternal(javax.servlet.ServletRequest, javax.servlet.http.HttpServletResponse)
          ServletRequestDispatcher.java:306
     boolean com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.HttpRequestHandler.processRequest(com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.ApplicationServerThread, com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.EvermindHttpServletRequest, com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.EvermindHttpServletResponse, java.io.InputStream, java.io.OutputStream, boolean)
          HttpRequestHandler.java:767
     void com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.HttpRequestHandler.run(java.lang.Thread)
          HttpRequestHandler.java:259
     void com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.HttpRequestHandler.run()
          HttpRequestHandler.java:106
     void EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run()
          PooledExecutor.java:803
     void java.lang.Thread.run()
          Thread.java:484
Thanks in advance.

provider.xml
<?xml version = '1.0' encoding = 'UTF-8' standalone='yes'?>
<?providerDefinition version="3.1"?>
<provider class="oracle.portal.provider.v2.DefaultProviderDefinition">
<session>true</session>
<passAllUrlParams>true</passAllUrlParams>
<portlet class="oracle.portal.provider.v2.DefaultPortletDefinition">
<id>1</id>
<name>MyPortlet</name>
<title>- Registration Form -</title>
<description>My Portlet Description</description>
<timeout>40</timeout>
<showEditToPublic>false</showEditToPublic>
<hasAbout>false</hasAbout>
<showEdit>false</showEdit>
<hasHelp>false</hasHelp>
<showEditDefault>false</showEditDefault>
<showDetails>false</showDetails>
<inputParameter class="oracle.portal.provider.v2.DefaultParameterDefinition">
<name>MyParam</name>
<displayName>My Portlet Parameter</displayName>
</inputParameter>
<renderer class="oracle.portal.provider.v2.render.RenderManager">
<renderContainer>true</renderContainer>
<renderCustomize>true</renderCustomize>
<autoRedirect>true</autoRedirect>
<contentType>text/html</contentType>
<showPage>/registration.jsp</showPage>
<showPage class="oracle.portal.provider.v2.render.http.StrutsRenderer">/register.do</showPage>
</renderer>
</portlet>
</provider>
I'd saw some example, which using <defaultAction>, however, wen i put in <defaultAction>/register.do</defaultAction>
i'll have error in my Provider Test Page. Validation Unsuccessful.
Error: Class oracle.portal.provider.v2.render.http.StrutsRenderer has no set or add method for tag "defaultAction"
Is <defaultAction> a necessary tag? Is tat e reason y my application isnt running?

Problem with setInvalid() (Struts/BC4J)

Hi all,
As suggested in the Developers Guide, I call an invalidateMe() method for recalculating sums in the master entity. However this refuses to work. The master page does not update its sum.
The sum is calculated in the ViewObject's query and treated as a transient attribute. I assume that the EntityObject signals all associated ViewObjects to deal with the invalidation. Or do I have to invalidate the ViewObject itself?
have a nice weekend,
Martijn Peters

Steven,
The transient attributes are actually called 'Calculated attributes' in BC4J. The sum is calculated using an SQL statement in the expression textbox of the view attribute panel of the view object editor. The sum represents the total number of hours in a week using the Weeks-Days-Hours master-detail-detail relationship. When Hours entities are modified, I expect a recalculation of the week total in the Weeks view object.
Is there a way to enforce a re-execution of the view objects query when the details are modified? Or do I have to calculate the sum with Java code?
kind regards,
Martijn Peters

Q? on best practices/techniques using BC4J/Struts

I have a jsp page that shows a bunch of detail records. Next to each detail record is an EDIT link.
When the user clicks on the edit link I would like to populate a form on the same jsp page with existing values from that detail record so that the user can update the values.
I am using struts/bc4j.
What would be the best way to accomplish this?
I was thinking if somehow I could get all the values of the clicked row in my controller and assign them to a form, then struts would take care of populating them again on the JSP.
otherwise i guess the other way is to use bc4j data tags.
Thanks in advance...

Thanks for the pointer but it seems to be asking the same questions I am. The only PDF that I could get was the one from quest. Yours from LuLu I kept getting DB errors on the LuLu site.
Also, 3rd party options are currently out of the question. I have done reorgs on R3 systems but since they don't have partitions and sub partitions and such there didn't seem to be as much to worry about.
I don't even want to mess with any BW R3 internal tables and that is why I would like to go from ODSD->Temp->ODSD. I can get the downtime to do it too.
Thanks for your help though the issue still sin't solved. And I'd like to see your book sometime.
Vince

BC4J Struts Integration

Hi, I am trying to develop a sample application based on BC4J and Struts. I used the native integration between these two framework (as it is explained in the "Building a Web Store with Struts & BC4J Frameworks") but I have a problem:
I need to access more than one applicationModule within a page. The problem is the native integration uses only one ApplicationModule per page (the one that is specified in the <set-property property="application" value="ToyStore"/> in the action tag for each action.
Is there an easy way to access more then one applicationModule from one StrutsAction and JSP page?
Thanks in advance

part 2 of posting:
<action path="/navigateEmpView1" parameter="jboEvent" type="oracle.jbo.html.struts11.actions.NavigationAction">
<set-property property="viewobject" value="EmpView1"/>
<set-property property="application" value="Mypackage1Module"/>
<set-property property="releasemode" value="Stateful"/>
</action>
Since NavigationAction is a Struts DispatchAction (instead of calling the execute method on the action, the method name to execute is passed using a request parameter), you will need to specify the event name on the request with the URL:
/nextEmpView1.do?jboEvent=next
To understand how this work, you need to look at how the BC4JContext is initialized:
The following code is extracted from BC4JrequestProcessor:
BC4JContext context = (BC4JContext)request.getAttribute(BC4JContext.ContextAttrName);
// Instantiate the context and save it on the request
if (context == null)
context = new BC4JContext();
request.setAttribute(BC4JContext.ContextAttrName, context);
if (initPageFromPath(bc4jMapping, request, response))
// First initialize context with the existing mapping values
bc4jMapping.initializeContext(request, response, context);
// Then use request para[i]Long postings are being truncated to ~1 kB at this time.

Struts bc4j

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