Toplink 11 & JPA: advisable way going forward?

Hi,
We're considering the Toplink configuration choices of a new major information system.
This system will not be in production for at least a year or more.
I think we have a few options:
- keep on using Toplink Workbench ORM 10.1.3
- start using Toplink JPA 11. I get the impression that this is the preferred way forward for J2EE applications on Oracle AS. It makes me wonder whether all Toplink specific value added functionality, like historical queries f.i., will be available using this annotation based approach. Another concern obviously is how many problems we'll encounter because the product is in preview. Is it suitable for development yet? Will there be regular preview updates? Will Toplink 11 work under OC4J 10.1.3?
- start using Toplink JPA 10.1.3. If I understand the documentation correctly this is an implementation of a preview of the JPA/EJB spec and is not recommended.
- start using Toplink Essentials. I get the impression that this precludes us from using Oracle Toplink specific functionality like historical queries.
Thanks for your advice.
Regards,
Joost

Do I understand correctly that all Toplink specific functionality is available when using Toplink 11 JPA? Can you give me a clue how this will work? TopLink exposes its' functionality beyond the JPA specification in several ways:
- Extended annotations are provided in the oracle.toplink.annotations package. These allow you to configure functionality like caching, locking and additional mappings not included in the JPA spec.
- The TopLink sessions.xml and project.xml files can be used in place of the JPA orm.xml (or annotations), this gives you access to using the TopLink Mapping Workbench and all of TopLink's mapping functionality. You just need to set the sessions XML property in your JPA persistence.xml to do this.
- You can customize your JPA generated TopLink descriptors or session using the DescriptorCustomizer or SessionCustomizer from your persistence.xml or using the @Customizer annotation.
- You can cast your JPA EntityManager to the TopLink EntityManager interface, which exposes additional API. The JPA Query can also be cast to the TopLink Query interface. You can also access the underlying TopLink Session and DatabaseQuery from these to make use of any TopLink functionality that is not exposed.
As you can imagine it's much harder organizationally to migrate server infrastructure to Oracle AS 11 then that it is to migrate the TopLink library used by an application. What is Oracle's policy in that respect? Oracle TopLink has always done its best to be portable across ALL application servers. It is our goal that TopLink 11g could be used in OC4J 10.1.3, and it should work, but I have not tested this myself.
James Sutherland

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My wife and I share an iTunes account. Is there any way to set up a seperate one for her to sync her phone contacts, iCloud and music to without having to purchase all her music again and then share going forward?

My wife and I share an iTunes account. Is there any way to set up a seperate one for her to sync her phone contacts, iCloud and music to without having to purchase all her music again and then share going forward?
It would be so much easier having seperate accounts but we have hundreds of her purchased songs on my account and she would need to be able to access these from her account. Possible?
Also, if we bought a song in future we would want to be able to both have access to it.
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Thank you in advance.

FYI: iTunes account (used to make purchases) is not the same as iTunes library (iTunes on your computer with music, movies, etc.).
ecbclb wrote:
Will we have to create a seperate account for her, or can we all have the same one?
You can but you will not be able to limit what she syncs.
I would like to avoid 'checking' and 'unchecking' individual songs every time one of us tries to synch our ipods to the library.
I don't recommend using (only) the checkmarks to select what to sync.
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Then add/delete from your own playlists to change iPod content.
The only time I uncheck items is if I rarely/never want to sync them to anything, such as Christmas music or old audiobooks.
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It's a bad idea to post your email address - it's an invitation to spam - even though in fact you haven't posted them in full; I've asked the hosts to remove them.

Toplink JPA forces database table and column names to UPPERCASE! Why?

I have recently experienced using Toplink JPA while using glassfish ... migrating an existing application to EJB 3.0 persistence. Toplink JPA, as implemented in glassfish, forces tablenames and column names from my code to be uppercase in select statements, etc. as then submitted to the database. Why? I cannot find anything in the EJB 3.0 specs on persistence that even suggests this.
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In both Unix/Linux and Java, which are both case sensitive, If I wanted names of files or other items to be uppercase, I would have written them that way. I do not expect some middleware piece of software to muck around with the case of text I have put into my code.
I am hopeful this 'feature' of the reference implementation of the EJB Persistence API will be corrected in a subsequent version. [Maybe you can tell I am not happy!]
Thanks for listening to my rant.

Robert,
I found that the name I specify in all of my @Table, @Column, ... annotations is used with the case as it is provided.
If TopLink determines the schema information through defaults then the names it comes up with are definitely upper cased by default.
Are you specifying the schema information that you want in annotations or XML?
Doug

Toplink JPA Deployment problem in OC4J

Hi all ,
we are having problem in deployment for an toplink JPA program in OC4J 10.1.3 .. We are using toplink essesntial and our deployed EAR structure is
aaplication.xml
rmwtoplink.war
the content of application.xml is as
<display-name>rmwtoplink</display-name>
<module>
<web>
<web-uri>rmwtoplink.war</web-uri>
<context-root>rmwapplist</context-root>
</web>
</module>
the content of war file as below :
web-inf\web.xml
web-inf\classes\META-INF\persistence.xml
web-inf\classes\<classes>
web-inf\gnf\<jsp pages>
when ever a pages are called those do not use entity manager / jpa call are loading perfectly , but the pages which have used jpa are nt diplayed , we check the error messages , it just halts after following codes :
EntityManagerFactory emf =
Persistence.createEntityManagerFactory(jpaSource);
It seems there is no exception that is even thrown in page or opmn log .
The same program is running fine in Jdveloper 10.1.3 /
Is there any way where we can get the actual error message ?
we are using toplink.jdbc.url for connecting the database .

Here is little more insight for the problem , further check reveals that :
start connecting rmwtest
exception occured for connection test , Exception [TOPLINK-4002] (Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007))): oracle.toplink.essentials.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: Listener refused the connection with the following error:
ORA-12514, TNS:listener does not currently know of service requested in connect descriptor
The Connection descriptor used by the client was:
//localhost:1521/ORCL
we do not have any idea how is localhost:1521/ORCL picked up , in our persistence.xml we have
where as rmwtest defined in persistence.xml as
<persistence-unit name="rmwtest" transaction-type="RESOURCE_LOCAL">
<provider>oracle.toplink.essentials.PersistenceProvider</provider>
<class>rmw.gnf.entity.ServSesnUser</class>
<class>rmw.gnf.entity.RmwData</class>
<class>rmw.gnf.entity.GnfData</class>
<properties>
<property name="toplink.logging.level" value="FINEST"/>
<property name="toplink.jdbc.driver" value="oracle.jdbc.driver.OracleDriver"/>
<property name="toplink.jdbc.url" value="jdbc:oracle:thin:@middb.1dc.com:1621:ukdbins"/>
<property name="toplink.jdbc.user" value="****"/>
<property name="toplink.jdbc.password" value="********"/>
</properties>
</persistence-unit>

Toplink JPA and handle to a sequence

Hi All,
I am trying to figure out a way to get a handle to an Oracle sequence and use it from the java application i.e. run operations like currval/nextval.
The reason I need this flexibility is to refer 2 sequences from the java app and apply it on a single table. Currently the table i am trying to insert already has a sequence which is a primary key generator. We do refer it in our JPA annotations and this works fine.
But there was a need where another column (not part of Primary key) also needs its values from a different sequence.
When we try to refer it from Toplink JPA it does not allow and errors stating cannot have 2 sequences mapping for a single table entity.
Let me know your thoughts.
Thanks

You could use a native SQL query to get the nextval or curval from the Sequence.
TopLink/EclipseLink should support an API for this, or allow multiple sequences per object, please vote for these bugs,
https://bugs.eclipse.org/bugs/show_bug.cgi?id=267701
https://bugs.eclipse.org/bugs/show_bug.cgi?id=320456
James : http://www.eclipselink.org

Toplink\JPA vs JDBC - Toplink died for my app with 5000 users

Hi All Just a quick question about performance when comparing toplink jpa ans jdbc.
I have an app I just develpoed using toplink for all data acces that will have approx 5000 users and initial testing with 200 things look good. However after launch and going live for 5000 people the app blew up. Lot's of memory heap errors, and TopLink exceptions...
To make things work I have replaced all the toplink with traditional JDBC, this works but I am currious as to why toplink blew up? I notice when JDev creates the Toplink code that it never does any checking for open connections and never explicitly closes connections. Is this something that I have to do?
I should not that I was not using datacontrols directly, I created a datacontrol but then ised the FacesContext to create a list of results in the backing bean??
Anyway, I know that's not a great description but I thought I would throw this question out there and see what people had to say?
Thanks
J

It is hard to say where a memory issue occurred. Normally usage of a memory profiler such as JRockit JRA, or JProfiler is useful in debugging such issues.
There were a couple related memory issues in previous releases, so ensure you have the latest release or patch release.
Using an isolated (shared=false) or weak cache may also help.
In general you should be able to scale to 5000 users without any issues.
James : http://www.eclipselink.org

Is Apple going to support a 5 year old computer or am I better off switching to PCs going forward?

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On the other hand, Windows XP is still supported, so my ancient laptop has now become my "Ipad" computer. Considering upgrading as that one is really slow, but I am weary on investing on another Mac, indeed, more expensive than PCs. I always thought they were worth it, but if now Apple forces us to replace our home computers every three or four years, then I no longer see the point of sticking with Macs.
Has anyone found a way to run Itunes for Ipad, AppleTV on older OS versions? or any idea if Apple plans to release an Itunes that will work on their own computers?

I'm not trying to be intentionally dismissive but no, Apple is done with PowerPC hardware. There will be no new upgrades for any software that will run on that hardware. With OS X 10.7 Lion Apple has completed their transition to Intel processors and going forward that is what they will support. If you wish to stay in the Apple eco-system you'll have to purchase new hardware; or, as you ask, you can go wtih Windows. I also would not count on WinXP being supported for very much longer either. So either way, if you wish to keep using iDevices, and iTunes and the iTunes Store you will have to upgrade to a modern, supported operating system from either Apple or MS.

Couldn't persist OneToMany JoinColumn/JoinTable (Unidir) using TopLink JPA

Hi All,
I am having a lot of difficulty deploying a OneToMany Unidirectional (Zipcode) record which consist of multiple Zipnames using TopLink on Glassfish v2r2, JDK1.6.0_06, MySQL 5.0, Netbeans 6.1 and Windows XP platform.
Below are the relevant EJBs snippets:
Zipcode class
@Entity
@Table(name="ZIPCODE")
public class Zipcode implements Serializable {
@OneToMany(cascade={CascadeType.ALL}, fetch=FetchType.EAGER)
@JoinColumn(name="ZIPCODE_ID")
             or
    @JoinTable(name="ZIPCODE_ZIPNAME",
               joinColumns={@JoinColumn(name="ZIPCODE_ID")},
               inverseJoinColumns={@JoinColumn(name="ZIPNAME_ID")})
    private Collection<Zipname> zipnames = new ArrayList<Zipname>();
    public Collection<Zipname> getNames()
     return zipnames;
    public void setZipnames(Collection<Zipname> zipnames)
     this.zipnames = zipnames;
Zipname class does not maintain relationship back to Zipcode.
public class ZipcodeApplicationClient {
@PersistenceContext(unitName="GeographicalDB-PU")
private static EntityManager manager;
    public ZipcodeApplicationClient() {
    public static void main(String[] args) {
        try {
            Zipcode zipcode_1 = new Zipcode();
            zipcode_1.setcode(9001);
            Zipname zipname_1 = new Zipname();
            zipname_1.setName("Harbour Cove");
            zipcode_1.getNames().add(zipname_1);
            // Can add one Zipname record with JoinTable but not JoinColumn
            Zipname zipname_2 = new Zipname();
            zipname_2.setName("Wonderland");
            zipcode_1.getNames().add(zipname_2);
            manager.persist(zipcode_1);   // line 45
The same deployment error message below was generated from both JoinColumn and JoinTable methods:
run-deploy:
run-display-browser:
run-ac:
Copying 1 file to C:\Documents and Settings\Jack\GeographicalBean\dist
Caught an unexpected exception!
java.lang.NullPointerException
        at client.ZipcodeApplicationClient.main(ZipcodeApplicationClient.java:45)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at com.sun.enterprise.util.Utility.invokeApplicationMain(Utility.java:266)
        at com.sun.enterprise.appclient.MainWithModuleSupport.<init>(MainWithModuleSupport.java:449)
        at com.sun.enterprise.appclient.MainWithModuleSupport.<init>(MainWithModuleSupport.java:259)
        at com.sun.enterprise.appclient.Main.main(Main.java:200)
run-InvestmentBean-app-client:The JoinColumn method would not work for one Zipname record. On the other hand, JoinTable approach would allow us to add a single Zipname record without error out.
Q1. Can you confirm whether TopLink JPA 1.0 (Glassfish v2r2) support OneToMany JoinColumn Unidirectional at all?
Q2. Does TopLink JPA 1.0 (Glassfish v2r2) support OneToMany JoinTable Unidirectional? If so, what is the cause of this issue? Otherwise, please make appropriate recommendation steps to take.
This question has been posted on http://forums.sun.com/thread.jspa?threadID=5330670&tstart=0 and http://saloon.javaranch.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic&f=78&t=004489&p=1 earlier in the hope a quicker response.
Your guidance would be very much appreciated.
Many thanks,
Jack

Hi,
Below are some more error output from the OneToMany JoinTable Unidirectional approach:
pre-run-deploy:
Initial deploying InvestmentBean to C:\Documents and Settings\abc\InvestmentBean\dist\gfdeploy
Completed initial distribution of InvestmentBean
Start registering the project's server resources
Finished registering server resources
moduleID=InvestmentBean
deployment started : 0%
deployment finished : 100%
Deploying application in domain completed successfully
Trying to create reference for application in target server completed successfully
Trying to start application in target server completed successfully
WARNING:
JDO76614: Deployment encountered SQL Exceptions:
JDO76609: Got SQLException executing statement "CREATE TABLE ZIPCODE (ID INTEGER NOT NULL, DIALING_CODE VARCHAR(255), TIME_ZONE VARCHAR(255), CODE INTEGER, NEAREST_AIRPORT VARCHAR(255), LONGITUDE VARCHAR(255), NEAREST_TRAIN_STATION VARCHAR(255), NEAREST_URBAN_CENTRE VARCHAR(255), HOTELS VARCHAR(255), LATITUDE VARCHAR(255), NEARBY_FEATURES VARCHAR(255), COUNCIL VARCHAR(255), LOCALITY VARCHAR(255), PRIMARY KEY (ID))": com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'zipcode' already exists
JDO76609: Got SQLException executing statement "CREATE TABLE ZIPCODE_ZIPNAME (ZIPCODE_ID INTEGER NOT NULL, ZIPNAME_ID INTEGER NOT NULL, PRIMARY KEY (ZIPCODE_ID, ZIPNAME_ID))": com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'zipcode_zipname' already exists
JDO76609: Got SQLException executing statement "CREATE TABLE ZIPNAME (ID INTEGER NOT NULL, NAME VARCHAR(255), PRIMARY KEY (ID))": com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'zipname' already exists
JDO76609: Got SQLException executing statement "ALTER TABLE ZIPCODE_ZIPNAME ADD CONSTRAINT FK_ZIPCODE_ZIPNAME_ZIPCODE_ID FOREIGN KEY (ZIPCODE_ID) REFERENCES ZIPCODE (ID)": java.sql.SQLException: Can't create table '.\geographicaldb\#sql-434_4.frm' (errno: 121)
JDO76609: Got SQLException executing statement "ALTER TABLE ZIPCODE_ZIPNAME ADD CONSTRAINT FK_ZIPCODE_ZIPNAME_ZIPNAME_ID FOREIGN KEY (ZIPNAME_ID) REFERENCES ZIPNAME (ID)": java.sql.SQLException: Can't create table '.\geographicaldb\#sql-434_4.frm' (errno: 121)Enable of InvestmentBean in target server completed successfully
Enable of application in all targets completed successfully
All operations completed successfully
post-run-deploy:
run-deploy:
run-display-browser:
run-ac:
Copying 1 file to C:\Documents and Settings\Jack\GeographicalBean\dist
Caught an unexpected exception!
java.lang.NullPointerException
at client.ZipcodeApplicationClient.main(ZipcodeApplicationClient.java:45)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.sun.enterprise.util.Utility.invokeApplicationMain(Utility.java:266)
at com.sun.enterprise.appclient.MainWithModuleSupport.<init>(MainWithModuleSupport.java:449)
at com.sun.enterprise.appclient.MainWithModuleSupport.<init>(MainWithModuleSupport.java:259)
at com.sun.enterprise.appclient.Main.main(Main.java:200)
run-GeographicalBean-app-client:
run:
I would like to correct an earleir comment where I stated that this method did work when adding a single Zipname record. This is no true.
Thanks,
Jack

Toplink JPA with Coherence deployment to Weblogic 10.3

Hi,
I have created an EJB application using Toplink JPA and Coherence. I would like to deploy this application to Weblogic 10.3.
During the startup of Weblogic I have specified the Java option as
-Dtangosol.coherence.cacheconfig=D:/JDEV_11g/jdeveloper/jdev/mywork/CoherenceApp/CoherenceProject/src/META-INF/coherence-cache-config.xml.
Persistence.xml and coherence-cache-config.xml are palced inside the jar file.
When I execute the ejb client program, during the method call, I can see that coherence is started but it uses the cache-config from the coherence.jar file instaed of the value I have set during startup. How can I make weblogic use my cache-config.xml? I have included the log file entries from server:
[EL Finest]: 2009.04.17 05:33:48.625--UnitOfWork(1777337)--Thread(Thread[[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)',5,Pooled Threads])--Execute query ReadObjectQuery(coherenceproject.MetadataType)
2009-04-17 05:33:54.547/258.954 Oracle Coherence 3.4.2/411 <Info> (thread=[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)', member=n/a): Loaded operational configuration from resource "zip:D:/JDEV_11g/jdeveloper/jdev/mywork/CoherenceApp/lib/coherence.jar!/tangosol-coherence.xml"
2009-04-17 05:33:54.562/258.969 Oracle Coherence 3.4.2/411 <Info> (thread=[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)', member=n/a): Loaded operational overrides from resource "zip:D:/JDEV_11g/jdeveloper/jdev/mywork/CoherenceApp/lib/coherence.jar!/tangosol-coherence-override-dev.xml"
2009-04-17 05:33:54.562/258.969 Oracle Coherence 3.4.2/411 <D5> (thread=[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)', member=n/a): Optional configuration override "/tangosol-coherence-override.xml" is not specified
2009-04-17 05:33:54.578/258.985 Oracle Coherence 3.4.2/411 <D5> (thread=[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)', member=n/a): Optional configuration override "/custom-mbeans.xml" is not specified
Oracle Coherence Version 3.4.2/411
Grid Edition: Development mode
Copyright (c) 2000-2009 Oracle. All rights reserved.
*2009-04-17 05:33:55.750/260.157 Oracle Coherence GE 3.4.2/411 <Info> (thread=[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)', member=n/a): Loaded cache configuration from resource "zip:D:/JDEV_11g/jdeveloper/jdev/mywork/CoherenceApp/lib/coherence.jar!/coherence-cache-config.xml"*
2009-04-17 05:34:17.390/281.797 Oracle Coherence GE 3.4.2/411 <D5> (thread=Cluster, member=n/a): Service Cluster joined the cluster with senior service member n/a
2009-04-17 05:34:21.890/286.297 Oracle Coherence GE 3.4.2/411 <Info> (thread=Cluster, member=n/a): Created a new cluster "cluster:0x2FFB" with Member(Id=1, Timestamp=2009-04-17 05:34:09.203, Address=141.144.90.113:8088, MachineId=18289, Location=site:sg.oracle.com,machine:rajerama-sg,process:3816, Role=WeblogicServer, Edition=Grid Edition, Mode=Development, CpuCount=2, SocketCount=1) UID=0x8D905A7100000120B0D9DD3347711F98
2009-04-17 05:34:27.000/291.407 Oracle Coherence GE 3.4.2/411 <D5> (thread=DistributedCache, member=1): Service DistributedCache joined the cluster with senior service member 1
[EL Finer]: 2009.04.17 05:34:28.343--ServerSession(32927169)--Thread(Thread[[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)',5,Pooled Threads])--Coherence(MetadataType)::Get: 2
[EL Fine]: 2009.04.17 05:34:28.703--ServerSession(32927169)--Thread(Thread[[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)',5,Pooled Threads])--Coherence(MetadataType)::Get: 2 result: null
[EL Finer]: 2009.04.17 05:34:28.703--ServerSession(32927169)--Thread(Thread[[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)',5,Pooled Threads])--Coherence(MetadataType)::Get: 2
*[EL Fine]: 2009.04.17 05:34:28.703--ServerSession(32927169)--Thread(Thread[[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)',5,Pooled Threads])--Coherence(MetadataType)::Get: 2 result: null*
null
Eventhough the method is called correctly, it does not return the value. Is there any other setup that has to be done?
Regards
Raji

Hi Raji,
You mentioned:
>
-Dtangosol.coherence.cacheconfig=D:/JDEV_11g/jdeveloper/jdev/mywork/CoherenceApp/CoherenceProject/src/META-INF/coherence-cache-config.xml
>
and
>
Persistence.xml and coherence-cache-config.xml are palced inside the jar file.
>
It appears that these are conflicting; as the system property indicates that the config should be read from a file, whereas the file is actually deployed in a jar.
That being said, I would suggest double checking that the system property is actually being set in the JVM. In my testing, if I specify a cache config that does not exist, an exception will be thrown:
java -Dtangosol.coherence.cacheconfig=foo.xml com.tangosol.net.CacheFactory
Oracle Coherence Version 3.4.2/411p3
Grid Edition: Development mode
Copyright (c) 2000-2009 Oracle. All rights reserved.
Map (?): cache test
2009-04-22 15:33:15.310/6.917 Oracle Coherence GE 3.4.2/411p3 <Error> (thread=main, member=1):
(Wrapped: Failed to load the factory) java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
        at com.tangosol.util.ClassHelper.newInstance(ClassHelper.java:662)
        at com.tangosol.net.CacheFactory.getConfigurableCacheFactory(CacheFactory.java:602)
        at com.tangosol.coherence.component.application.console.Coherence.doCache(Coherence.CDB:9)
        at com.tangosol.coherence.component.application.console.Coherence.processCommand(Coherence.CDB:209)
        at com.tangosol.coherence.component.application.console.Coherence.run(Coherence.CDB:39)
        at com.tangosol.coherence.component.application.console.Coherence.main(Coherence.CDB:3)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at com.tangosol.net.CacheFactory.main(CacheFactory.java:1308)
Caused by: (Wrapped: Failed to load configuration resource: foo.xml) java.io.IOException: Configuration is missing: "foo.xml", loader=null
        at com.tangosol.net.DefaultConfigurableCacheFactory.loadConfigAsResource(DefaultConfigurableCacheFactory.java:386)
        at com.tangosol.net.DefaultConfigurableCacheFactory.loadConfig(DefaultConfigurableCacheFactory.java:337)
        at com.tangosol.net.DefaultConfigurableCacheFactory.loadConfig(DefaultConfigurableCacheFactory.java:309)
        at com.tangosol.net.DefaultConfigurableCacheFactory.<init>(DefaultConfigurableCacheFactory.java:137)
        ... 15 moreThanks,
Patrick

TopLink - JPA - Jdeveloper 11g

Hi All,
I am having a TopLink - JPA example. I am executing a InsertExample.java which will insert record. But as I run InsertExample.java I keep getting following error.
I am using Jdeveloper 11 g (and NOT Eclipse). How to get rid of following error ?
"C:\Program Files\Java\jdk1.6.0_22\bin\javaw.exe" -client -classpath C:\MyJdevUserHomeEnv\mywork\TopLinkDesign\.adf;C:\MyJdevUserHomeEnv\mywork\TopLinkDesign\TopLink\classes;C:\Oracle\MiddlewarePS3\modules\com.oracle.toplink_1.0.0.0_11-1-1-4-0.jar;C:\Oracle\MiddlewarePS3\modules\org.eclipse.persistence_1.0.0.0_2-1.jar;C:\Oracle\MiddlewarePS3\modules\com.bea.core.antlr.runtime_2.7.7.jar;C:\Oracle\MiddlewarePS3\oracle_common\modules\oracle.toplink_11.1.1\javax.persistence_2.0_preview.jar;C:\Oracle\MiddlewarePS3\oracle_common\modules\oracle.xdk_11.1.0\xmlparserv2.jar;C:\Oracle\MiddlewarePS3\oracle_common\modules\oracle.xdk_11.1.0\xml.jar;C:\downloads\toplink_111130_en.zip;C:\downloads\coherence-java-3.6.0.0b17229.zip;C:\downloads\coherence-java-3.6.0.0b17229\coherence\lib\coherence.jar;C:\downloads\eclipselink-2.1.1.v20100817-r8050\eclipselink\jlib\eclipselink.jar;C:\downloads\toplink_111130_en\jlib\toplink-grid.jar;C:\Oracle\MiddlewarePS3\jdeveloper\ide\macros\..\..\..\wlserver_10.3\server\lib\ojdbc6.jar;C:\Oracle\MiddlewarePS3\jdeveloper\ide\macros\..\..\..\oracle_common\modules\oracle.nlsrtl_11.1.0\orai18n.jar;C:\Oracle\MiddlewarePS3\oracle_common\modules\oracle.odl_11.1.1\ojdl.jar;C:\Oracle\MiddlewarePS3\oracle_common\modules\oracle.dms_11.1.1\dms.jar -Djavax.net.ssl.trustStore=C:\Oracle\MiddlewarePS3\wlserver_10.3\server\lib\DemoTrust.jks gridcache.example.InsertExample
[EL Info]: 2010-11-20 19:58:59.418--ServerSession(30936685)--EclipseLink, version: Eclipse Persistence Services - 2.1.2.v20101006-r8316
[EL Warning]: 2010-11-20 19:58:59.425--java.lang.ClassNotFoundException: weblogic.version
[EL Info]: 2010-11-20 19:58:59.855--ServerSession(30936685)--file:/C:/MyJdevUserHomeEnv/mywork/TopLinkDesign/TopLink/classes/_employee-pu login successful
[EL Info]: 2010-11-20 19:58:59.855--JMX MBeanServer instance found: [com.sun.jmx.mbeanserver.JmxMBeanServer@146c1d4], # of beans: [20], domain: [DefaultDomain] at index: [0].
[EL Warning]: 2010-11-20 19:58:59.861--Failed to initialize MBean threadPoolRuntime: javax.management.InstanceNotFoundException: com.bea:Name=RuntimeService,Type=weblogic.management.mbeanservers.runtime.RuntimeServiceMBean
[EL Warning]: 2010-11-20 19:58:59.862--Failed to initialize MBean threadPoolRuntime: javax.management.InstanceNotFoundException: com.bea:Name=RuntimeService,Type=weblogic.management.mbeanservers.runtime.RuntimeServiceMBean
Exception in thread "main" java.lang.IllegalArgumentException: Object: Employee(0: Smith, Bob) is not a known entity type.
*     at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNewObjectForPersist(UnitOfWorkImpl.java:4198)*
*     at org.eclipse.persistence.internal.jpa.EntityManagerImpl.persist(EntityManagerImpl.java:403)*
*     at gridcache.example.InsertExample.main(InsertExample.java:29)*
Process exited with exit code 1.

It seems this is not a Java EE deployment so is the Employee class listed in the persistence.xml file? Or have you set <exclude-unlisted-classes>false</exclude-unlisted-classes> ? Alternatively you could package the classes into a Jar referenced through the <jar-file></jar-file> element.
--Gordon

Toplink JPA: jdbc connection access required

I have a strong reason why direct access to the connections used by Toplink JPA is required: for each connection I need to execute
- a "set role" to grant permissions,
- "set lock mode" to prevent hangups,
- "set isolation" to get the correct transaction type,
- possibly a "set explain on" to get query costs info,
- and a "set constraints all deferred" to have constraints checked at commit time, not earlier.
Can the Toplink pooling mechanism be replaced?

You can use either an external data source from your container or an JDBC data source for that matter but you cannot replace the internal connection pool. Although one option may be to use a wrapped connection pool of your own I would first recommend looking at the SessionEventListener callbacks. Implementing this interface and registering it using a SessionCustomizer (persistence unit property) would allow you to be notified and get access to the JDBC connection when acquired and released from either pooling mechanism.
Here is an example:
public class JDBCConnectionListener extends SessionEventAdapter implements SessionCustomizer {
     * This method is used when this class is configured as the session customizer
     * in the persistence unit properties.
    public void customize(Session session) {
        session.getEventManager().addListener(this);
     * This event is raised after a connection is acquired from a connection pool.
    public void postAcquireConnection(SessionEvent event) {
        DatabaseAccessor da = (DatabaseAccessor)event.getResult();
        Connection con = da.getConnection();
        PreparedStatement statement;
        try {
            event.getSession().log(SessionLog.FINE, SessionLog.SQL, "POST-ACQUIRE> SELECT SYSDATE FROM DUAL");
            statement = con.prepareStatement("SELECT SYSDATE FROM DUAL");
            ResultSet rs = statement.executeQuery();
            rs.close();
        } catch (SQLException e) {
            // TODO
     * This event is raised before a connection is released into a connection pool.
    public void preReleaseConnection(SessionEvent event) {
}Doug

TopLink JPA doesn't persist Clob field when useStringBinding

I'm using Toplink JPA on a JSF application deploying on Tomcat.
Everything works fine except the table with Clob field.
When insert data with size larger than 4KB, the error will occur.
I did some searching and I fixed this by using SessionCustomizer.
In my persistence.xml I put this
<property name="toplink.session.customizer" value="com.my.sessions.MySessionCustomizer"/>
and MySessionCustomizer is like this
public class MySessionCustomizer implements SessionCustomizer {
     public void customize(Session session) throws Exception {
          DatabaseLogin login = session.getLogin();
          login.useStringBinding();
          login.setShouldBindAllParameters(false);
          login.dontCacheAllStatements();
Things seem to work fine now but I found that Toplink does not persist the field that useStringBinding in database (Oracle 9i)
eg. when I update an object into a table which has 1 clob field and some other field like VARCHAR2, all the data in non-clob fields are stored perfectly in Oracle but the data in Clob field just gone blank. It just gone blank in the database but in my application, it's still there. I mean as long as my session is still alive, everything seems to work fine from the application side. But when I start a new session, the data in the Clob is lost because it's not in the database.
Why is this happening? Do I need to do anything extra when useStringBinding?
It seems to me that the field with StringBinding just don't get into the database.
Could somebody help me with this?

This is an issue with the Oracle thin JDBC driver in that it has a 4k limit for LOBS. The best workaround is to use the Oracle OCI JDBC driver, which does not have this limitation (I think this limitation was also improved in the Oracle 10.2 thin JDBC driver).
If you are using TopLink 10.1.3 a workaround to the JDBC issue is provided by using the Oracle9Platform and configuring the mapping for the CLOB to have a field-classification of java.sql.Clob.class.
If you are using TopLink Essentials unfortunately this support is not currently available. I believe there is already an issue logged for this in Glassfish. If you cannot use the OCI driver you may need to insert the CLOB data using direct JDBC code.

TopLink JPA coherence

we are using Toplink, JPA and coherence.
can anyone point me to java code that depicts "How to warm up the coherence cache and then run queries against the cache. and then what happens if the at some point object is not in cache " ?
thx
D

Warming the cache for a TopLink Grid enabled entity can be done by issuing a query for the objects you want to load into the cache along with the hint:
query.setHint(QueryHints.QUERY_REDIRECTOR, new IgnoreDefaultRedirector());
Which is discussed here: http://download.oracle.com/docs/cd/E14571_01/doc.1111/e16596/tlcgd003.htm#CHDGFCAI.
You can also use JOIN and BATCH hints on the query if you want to load a graph of objects into the grid.
With Grid Read and Grid Entity configurations all queries will be executed on the grid. Primary key queries on the grid for objects not present in the grid will result in a primary key select on the database if you've configured a CacheStore for a given entity's cache.
Non-PK queries will only return what is in the grid. With Grid Read and Grid Entity is it your responsibility to ensure the grid is warmed up.
--Shaun

Toplink JPA + Postgis

Hello,
Does TopLink JPA supports PostgreSQL together with Postgis extensions? As far as I know, for Hibernate, there is the Hibernate spatial plugin that handles geometric features. Does TopLink provide support for Postgis by default? In Google, there is not much information related to using Postgis together with Toplink.
br, Christoph

Christoph,
there is support for PostgreSQL but no explicit support for Postgis . The mapping and querying frameworks are extensible to allow you to map custom types and SQL operators. Based on customer demand we added support for Oracle DB's spatial capabilities. A similar extension could be added for Postgis. I would recommend opening an enhancement request against EclipseLink (we now develop TopLink in this open source project).
Doug

Toplink 11 & JPA: advisable way going forward?

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