FOR EXPERTS ONLY ! JPA provider internals

Is there any way by using a JPA provider like Toplink essentials, to use (explicitly, ir implicitly) stored procedures ?
Is JPA capable of handling "ULTRA-MEGA-GIGA-large-scale-application" with ultra strong performance requirements ?
How much is the overhead of using a JPA provider over a low level interface ?
What is a basic architecture of a JPA provider ?

Is there any way by using a JPA provider like Toplink essentials, to use (explicitly, ir implicitly) stored procedures ?Yes, but not TopLink Essentials, either TopLink 11g or EclipseLink.
Is JPA capable of handling "ULTRA-MEGA-GIGA-large-scale-application" with ultra strong performance requirements ?Sure.
How much is the overhead of using a JPA provider over a low level interface ?Depends on how optimized your JPA and JDBC implementation is, and your application. JPA like JDBC can have poor performance if you do things the wrong way. Most JPA providers allow easy configuration of advanced JDBC optimizations, so make optimizing performance much easier. Most JPA providers also provide performance features such as caching, which most raw JDBC code does not take advantage of. Obviously JPA works on top of JDBC, so in an ideal implementation of both (ignoring caching) JPA would have an overhead, 10% is typically a good guess.
What is a basic architecture of a JPA provider ?See,
[http://wiki.eclipse.org/EclipseLink/Development/Architecture|http://wiki.eclipse.org/EclipseLink/Development/Architecture]
James - [http://www.eclipselink.org]

Similar Messages

Database optimisation ressource (for expert only :) )

Hi
Juste a (big) question,
we want to migrate our application from (linux code-grep, cut, wc.....cammande) to JAVA or PRO C
the application takes on input flat files (4 flate file per minutes) each file containes 100.000 lines to reformate with grep command and then load them into a partitionned database 10g
what do you suggeste me you experts to implement for the best use of my database
solution 1 : the use of java code rather then linux code
solution 2 : the use of C /pro C code rather then linux code and java code
solution 3 : the use of external tables in oracle (consider my flat files as external table) and contain do all the trasformation with native SQL code rather then linux code and java code and C code
I realy need your help,
we don't want to use teradata cause of the expencive price, and we ask me to make optimum developpement
Tks in advance

If pressed, I would probably go for option 3.
Te "optimum" you want is dependent on the needs and objectives of your organization, so I cannot answer what is best for you.
What's wrong with grep, sed and awk?
Yours,
Laurenz Albe

Choosing JPA provider for weblogic 11g R1

hi all,
I am confusing with JPA provider.
So far, we have choice between Toplink Essenital and Hibernate JPA.
Which one will be best choice for weblogic? any idea?
With Regards,
WP

EclipseLink is recommended as it is more complaint with JPA specification.
https://forum.hibernate.org/viewtopic.php?f=1&t=999398
EclipseLink is build on the Toplink core. EclipseLink is the intended path forward for persistence for Oracle and TopLink.
http://www.oracle.com/technology/products/ias/toplink/technical/tl11gR1_fov.htm
http://wiki.eclipse.org/EclipseLink/Examples/JPA/WebLogic_Web_Tutorial
http://download.oracle.com/docs/cd/E14545_01/help/oracle.eclipse.tools.orm.doc/html/files/libAndFacetForJPA.html#eclipselinkfacet
Also refer
http://blog.csdn.net/liujiangCE/archive/2009/12/30/5103074.aspx

URISyntaxException while using GlassFish JPA provider in WebLogic

I am trying to plug in GlassFish JPA provider https://glassfish.dev.java.net/javaee5/persistence/#Java_Persistence_API in WebLogic Application Server version "EJB 3.0 Tech Preview". EJB 3 tech preview version is only available on Windows OS, so I am using Windows OS.
1. I have made GlassFish provider jar file (toplink-essentials.jar) available to WebLogic server class loader.
2. I modified the EJB 3.0 sample (reviewService.ear) to use GlassFish provider oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider in persistence.xml file.
3. I changed the build.xml so that I don't package Kodo enhanced classes in the ear file.
Now when I deploy the application, I am getting URISyntaxException thrown by GlassFish provider. The URL printed in the exception message jar:file:D:\sahoo\software\bea\weblogic_ejb30_preview\samples\domains\wl_server\.\servers\examplesServer\tmp\_WL_user\reviewService\prxy3a\domain.jar!/ is containing '\' instead of '/'. This looks like a bug in the WebLogic server. Can anyone confirm this?
Exception Stack:
Target state: deploy failed on Server examplesServer
java.net.URISyntaxException: Illegal character in opaque part at index 11: jar:file:D:\sahoo\software\bea\weblogic_ejb30_preview\samples\domains\wl_server\.\servers\examplesServer\tmp\_WL_user\reviewService\prxy3a\domain.jar!/
at java.net.URI$Parser.fail(URI.java:2809)
at java.net.URI$Parser.checkChars(URI.java:2982)
at java.net.URI$Parser.parse(URI.java:3019)
at java.net.URI.<init>(URI.java:578)
at java.net.URL.toURI(URL.java:916)
at oracle.toplink.essentials.ejb.cmp3.persistence.PersistenceUnitProcessor.convertURLToURI(PersistenceUnitProcessor.java:625)
at oracle.toplink.essentials.ejb.cmp3.persistence.PersistenceUnitProcessor.createInputStreamForFileInPersistenceUnit(PersistenceUnitProcessor.java:200)
at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl.populateORMXMLStreamList(EntityManagerSetupImpl.java:664)
at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl.buildPersistentClassSetFromXMLDocuments(EntityManagerSetupImpl.java:124)
at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl.buildEntityList(EntityManagerSetupImpl.java:162)
at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl.predeploy(EntityManagerSetupImpl.java:492)
at oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.createContainerEntityManagerFactory(EntityManagerFactoryProvider.java:154)
at weblogic.deployment.PersistenceUnitInfoImpl.createEntityManagerFactory(PersistenceUnitInfoImpl.java:140)
at weblogic.deployment.PersistenceUnitInfoImpl.<init>(PersistenceUnitInfoImpl.java:84)
at weblogic.deployment.AbstractPersistenceUnitRegistry.loadPersistenceDescriptor(AbstractPersistenceUnitRegistry.java:43)
at weblogic.deployment.ModulePersistenceUnitRegistry.<init>(ModulePersistenceUnitRegistry.java:67)
at weblogic.ejb.container.deployer.EJBModule.prepare(EJBModule.java:320)
at weblogic.application.internal.flow.ModuleListenerInvoker.prepare(ModuleListenerInvoker.java:93)
Thanks,
Sahoo

The processing steps
<OL>
<LI>1. URL passed by the container is converted by the provider to an URI.
<LI>2. The provider is passing this URI to a java.io.File(URI uri) constructor.
</OL>
<OL>
<LI>Problem 1: The container is not replacing the backslash to forward slash.
<LI>Problem 2: Even when the container replaces the backslashes, the provider fails at the File(URI uri) constructor. Because it needs to construct the file with
not the actual URI, but URI.getSchemeSpecificPart().
</OL>
 
One possible solution lies for the provider (without modifying the container) is to start with the URL, convert it to URL after replacing the backslashes and then passing only the scheme specific part to construct a file.
Please see the attached simple Java code
<pre>package test;
import java.io.File;
import java.net.URI;
import java.net.URL;
* @author <A HREF="mailto:[email protected]>Pinaki Poddar</A>
public class TestPath
 * @param args
 public static void main (String[ args) throws Exception
// String url = "jar:file://D:/TP5/weblogic_ejb30_preview/samples/domains/wl_server/./servers/examplesServer/tmp/_WL_user/ejax/ie9te7/ejax.jar!/";
// String url = "jar:file:D:\\TP5\\weblogic_ejb30_preview\\samples\\domains\\wl_server\\.\\servers\\examplesServer\\tmp\\_WL_user\\ejax\\ie9te7\\ejax.jar!/";
 String url = "jar:file:D:\\TP5\\weblogic_ejb30_preview\\samples\\domains\\wl_server\\.\\servers\\examplesServer\\tmp\\_WL_user\\ejax\\ie9te7\\ejax.jar!/";
 URL URL = validateURL(url);
 System.out.println("URL = " + URL);
 System.out.println("URL.protocol = " + URL.getProtocol());
 System.out.println("URL.file = " + URL.getFile());
 URI URI = URL.toURI();
 System.out.println("URI = " + URI);
 System.out.println("Scheme =" + URI.getScheme());
 System.out.println("Authority =" + URI.getAuthority());
 System.out.println("Host =" + URI.getHost());
 System.out.println("Port =" + URI.getPort());
 System.out.println("SchemePart: " + URI.getRawSchemeSpecificPart());
 System.out.println("Path: " + URI.getPath());
 System.out.println("Fragment: " + URI.getFragment());
 System.out.println("Absolute = " + URI.isAbsolute());
 System.out.println("Opaque = " + URI.isOpaque());
 File file = new File(URI.getSchemeSpecificPart());
 System.out.println("File [" + URI + "] exists = " + file.exists());
 static URL validateURL(String url) throws Exception {
 url = url.replace('\\','/');
 URL URL = new URL(url);
 String fileName = URL.getFile();
 if (fileName.startsWith("file:") && !fileName.startsWith("file://"))
 URL = new URL(URL.getProtocol(),URL.getHost(),URL.getPort(),
 "file://"+fileName.substring(5));
 return URL;
</pre>

I got the new iPhone 5C. In my cellular settings, under "Use cellular data for", it only show passbook and facetime. How can I add other apps? Also, my carrier is AT&T

I got the new iPhone 5C. In my cellular settings, under "Use cellular data for", it only show passbook and facetime. How can I add other apps? Also, my carrier is AT&T

Hello Sophie59
You should be able to see two different tabs when setting up the email if you go to Other > Add Mail Account. Once you enter in the email address and password, you should be at the next screen to provide more details about the email as far as incoming and outgoing servers and at the top there will be a blue section to add it in as a POP or IMAP email account. Check out the article below for further troubleshooting and emails setup options.
iOS: Troubleshooting Mail
http://support.apple.com/kb/ts3899
iOS: Adding an email account
http://support.apple.com/kb/ht4810
Regards,
-Norm G.

SharePoint 2010 List View Web Part not showing for read-only users?

Hello all,
I have List View Webparts on my Blank Web Part page, and it's not showing for Read-Only users.
Is this intended by Microsoft or is it a bug?
Thank you!

Hi,
According to your post, my understanding is that the read only user could not see the list view web part.
Per my knowledge, the issue may be cause that the user do not have the proper permission for the list.
1. Check whether the user can access the list.
2. Check whether the user can view all the items instead of partial items in the list.
3. Check whether there are some fields refer to other lists or terms, especially the lookup field or managed metadata filed.
If that is the case, make sure the user can access the lookup list.
Thanks,
Jason
Forum Support
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact
[email protected]
Jason Guo
TechNet Community Support

Building an Admin Console Extension for a Custom Security Provider

I am looking for an example or a description how to build an Administration Console extension for a custom Authentication Provider.
Especially the creation page for the provider is interesting because I am not able to create and register the required Authentication Provider MBean.
The call “mbeanHome.getMBeanServer().createMBean(className,objectname)” always throws the following Exception “javax.management.ReflectionException: The MBean class could not be loaded by the default loader repository”
Even if I try the class “weblogic.security.providers.authentication.IPlanetAuthenticator”, that is part of the bea distribution, the same exception is thrown.
It seams that the Problem has something to do with class loaders?
When I use the standard admin console pages to create and configure my provider everything works fine.
The only example “kennedy0208.zip” I found in the net does not deal with the creation of the MBean.
It only customizes the edit pages for the provider and at that point the MBean has already been created by the standard admin pages.
Maybe the author discovered the same Problems and gave up!?
What makes me wondering is that I have to put my MBean Classes to my console extension war file to be able to import the packages in my jsp.
If I not put the classes to my war the compiler throws an exception because he can’t resolve the package.
Because I moved my provider implementation jar to the directory “WLHOME\server\lib\mbeantypes” as described in the bea documentation it should run without putting the classes to the war!?!
I am very surprised that the bea documentation does not provide any example about this topic.

Found it. Cut and paste error. I still had one of their example class
names in my code. Oops.

Error occurred in deployment step 'Uninstall app for SharePoint': Only users who can View Pages can list Apps

While deploying the SharePoint Hosted App I am facing the issue 'Uninstall app for SharePoint': Only users who can View Pages can list Apps"
- Provided the permissions for App Management and Subscription Services as well as DB.
- Added into Host web as SC Administrator
Thanks in Advance.

Hi,
The user you are running with Visual Studio should have read permission on the pages of SharePoint web you are trying to deploying your app.
I suggest you add the login user to the SharePoint web in the “Site Settings”->”People and Group”.
Here is a similar thread for your reference:
http://sharepoint.stackexchange.com/questions/68590/error-occurred-in-deployment-step-uninstall-app-for-sharepoint-only-users-who
More reference:
Step by step How to configure environment for app development:
http://gianespo.wordpress.com/2014/01/30/step-by-step-how-to-configure-environment-for-sharepoint-app-development/
Best regards
Zhengyu Guo
TechNet Community Support

How to Block mails for HR only

Dear   expert/guru
    Please let me know how to block mails for HR only.
   We don't want to block mails for all.....

Juan Reyes wrote:
There is no way to block mails based on a "Module", as Olivier said you can only filter mails per domain under the node config in SCOT.
>
> I don't understand why would anyone see a benefit by stopping people on an specific are from receiving mail. In anycase you can stop the SAPCONNECT job and filter the mails to be sent manually from SOST but thats a lot of work!.
>
> Regards
> Juan
>
> PS: Also you can simply stop the jobs creating the "HR mails" in the first place.... huh?
hi,
Issue is given below:
My SAP HR Team has some leave issues.
Due to which they need to stop the triggering of mails for few mins in Production system

TS4123 So what if the only Winsock Provider listed is the Bonjour Namespace Provider?

AppleMobileDeviceService.exe is constantly hogging one CPU on my machine. I've tried the Winsock command line reset (netsh winsock reset) and that seemed to work for awhile. Then the problem reappears.
I've tried stopping/starting or restarting the processes via the MS Services interface, and again, this resolves the issue temporarily. I've also, mostly out of frustration, stopped the process manually. Always comes back.
I've taken a look at Apple's suggestion (TS4123) which implies that their is some sort of conflict with another program. Back to my initial question:
So what if the only Winsock Provider listed is the Bonjour Namespace Provider?
Overall, at this point, I have to agree with the vast majority of users who are capable of both recognizing that this is a problem and troubleshooting it to this point: This is an Apple problem and it needs to be fixed by Apple, not passed off as a conflict from some other program that is "doing something wrong" in the eyes of Apple.
My next step is to continue troubleshooting on my own to come up with a workaround solution that doesn't require me resetting winsock or killing multiple processes every day in order to use a processor that shouldn't be taken hostage to begin with.
Has anyone out there explored the onset of this problem (I've seen iTunes 10.5) in relation to updating devices via WiFi network (also iTunes 10.5 feature add?).
I'm going to start by there and disable updating of all devices over WiFi to see if that prevents the CPU hogging. Hopefully that's not it, because that sure is a great feature.
As a Mac user since 1985 and a M$ programmer for more than a decade, this is an extremely disappointing problem and one that should be an easy fix considering the resources AAPL manages to accrue.

Nevermind.
Further review indicates that two up to date (iOS 6.1.4, Build 10B350) as of 7pm CST 7/2/2013 still causing AppleMobileDeviceService.exe to peg one processor at 100%.
Going to turn off "Sync with this iPhone over WIFI" for both phones and see if that does it.
Shameful really.
Edit: iTunes up to date with 11.0.4.4
Message was edited by: shaggy19

Planning for Components to be Provided in Subcontracting

Hi all,
May I know what is the business rational to plan the requirements to be provided for the components (material provide to vendor) for one subcontractor separately from all other requirements with the use of MRP area (i.e. what is the business reason to carry out MRP with MRP areas, to define an MRP area for each individual subcontractor, and thus plan the components to be provided separately for each subcontractor).
Can you give me an example of business process (i.e. business requirement) which require this kind of setup on subcontracting process?
thanks.
tuffy

Hi Tuffy,
one example for using subcon MRP areas is the following process:
- components are usually provided by a 3rd-party vendor directly to the subcontractor
- in the tab "delivery address" of the purchasing document the subcontractor can be specified that shall receive the components
- the MRP-run can automatically create such purchase requisitions but only when it knows the subcontractor that shall receive the components. This can only be realized by subcon MRP areas.
Best Regards
Uwe

Jdeveloper 11.1.1.2 default JPA provider

hi all,
I would like to know default JPA provider for jdeveloper 11.1.1.2 default weblogic server.
With Regards,
WP

imo, there is no default JPA provider for JDeveloper. It would depend upon the techstack you choose for your project. For e.g., you could use fusion middleware components like ADF BC or you could choose to use JPA like Hibernate/Toplink with EJBs or JSP/JSF
regards,
~K

Support for Read Only EJBs ?

Hi;
I'm trying to discover if OC4J 9.0.3 provides support for Read Only Entity EJBs? If anyone can point me to docmentation on deployment descriptor elements controlling this, I'd be most grateful..
Thanks in Advance;
Simon

Simon -- We do support read-only concurrency in OC4J. Have a look at the EJB Developer's Guide (available on OTN) for more information. It is in the section on locking modes.
Thanks -- Jeff

TS2446 user its belong sales man he do it for dounloud only

user its belong sales man he do it for download only & i but my user name 2 days ago

Thanks, tt2. Yes, the brevity is a no-go for the application I have in mind. I could go straight to a podcast provider (at significant cost). But the iTalk recorder... does it record to an mp3 or something similar which I can then affix to a web page? I have one blog up and running, and another in the works (different hosting software in each case, one requiring a host (WordPress), the other doesn't (Blogger)). I can dictate to text directly with DragonSpeaking, but the idea of having a downloadable podcast of content for educational purposes is what I am after. Perhaps neither is the solution, and I will simply have to pull out the credit card and pay significant annual fees.
Give my best to London.

Is a 3845 G0/0 slot in SFP mode for HIMI only?

This was brought up in a meeting when we were debating on how to terminate an optical WAN handoff. I guess I just assumed that the G0/0 slot in the 3845 would act as any other gig port with an SFP, but someone stated they thought it might be for HIMI only. I haven't found any documentation to say one way or another, so I thought I'd throw it out to the community: Is the G0/0 slot in SFP mode for HIMI only?
By the by, we have no etherswitch modules in this router.
Thanks!
Justin

From http://www.cisco.com/en/US/docs/ios/12_4/12_4_mainline/srdescn1.html
The HIMI feature provides the capability to establish a connection between two enhanced network modules (NME) or between the onboard small-form-factor pluggable (SFP) Gigabit Ethernet module and an NME on the Cisco 3825 and Cisco 3845 routers. Currently, Cisco EtherSwitch service modules are the only NMEs that support HIMI.
Ah yeah that's what I figured. Just wanted to confirm since the seed of doubt was planted. Thanks!

FOR EXPERTS ONLY ! JPA provider internals

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