Use of TopLink with EntityBeans

Hi,
In one of my applications, they have used TopLink with Entity Beans. Can any one tell me what's use of toplink here.(I think it's for Object relational mapping). As of now we want to get rid of toplink. What could be the alternative.
Thanks.

Why would you want to get rid of TopLink? Are you having some issues or are just unaware of the benefits of using a top of the class ORM provider like TopLink? TopLink is a robust, mature and very scallable framework with a large, active and approachable community.
--Gordon

Similar Messages

Problem using Toplink with JUnit

Hi,
I have a problem using Toplink with JUnit. Method under test is very simple: it use a static EntityManager object to open a transaction and persists data to db. When I invoke the method from a test method, it gives me the exception:
java.lang.AssertionError
     at oracle.toplink.essentials.ejb.cmp3.persistence.PersistenceUnitProcessor.computePURootURL(PersistenceUnitProcessor.java:248)
     at oracle.toplink.essentials.ejb.cmp3.persistence.PersistenceUnitProcessor.findPersistenceArchives(PersistenceUnitProcessor.java:232)
     at oracle.toplink.essentials.ejb.cmp3.persistence.PersistenceUnitProcessor.findPersistenceArchives(PersistenceUnitProcessor.java:216)
     at oracle.toplink.essentials.internal.ejb.cmp3.JavaSECMPInitializer.initialize(JavaSECMPInitializer.java:239)
     at oracle.toplink.essentials.internal.ejb.cmp3.JavaSECMPInitializer.initializeFromMain(JavaSECMPInitializer.java:278)
     at oracle.toplink.essentials.internal.ejb.cmp3.JavaSECMPInitializer.getJavaSECMPInitializer(JavaSECMPInitializer.java:81)
     at oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.createEntityManagerFactory(EntityManagerFactoryProvider.java:119)
     at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83)
     at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:60)
     at it.valerio.electromanager.model.EntityFacade.<clinit>(EntityFacade.java:12)
     at it.valerio.electromanager.business.ClienteBiz.insertIntoDatabase(ClienteBiz.java:36)
     at it.valerio.electromanager.test.model.ClienteTest.insertDBTest(ClienteTest.java:30)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at org.junit.internal.runners.TestMethodRunner.executeMethodBody(TestMethodRunner.java:99)
     at org.junit.internal.runners.TestMethodRunner.runUnprotected(TestMethodRunner.java:81)
     at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)
     at org.junit.internal.runners.TestMethodRunner.runMethod(TestMethodRunner.java:75)
     at org.junit.internal.runners.TestMethodRunner.run(TestMethodRunner.java:45)
     at org.junit.internal.runners.TestClassMethodsRunner.invokeTestMethod(TestClassMethodsRunner.java:66)
     at org.junit.internal.runners.TestClassMethodsRunner.run(TestClassMethodsRunner.java:35)
     at org.junit.internal.runners.TestClassRunner$1.runUnprotected(TestClassRunner.java:42)
     at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)
     at org.junit.internal.runners.TestClassRunner.run(TestClassRunner.java:52)
     at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:38)
     at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Where is the problem???
Regards,
Valerio

EntityFacade class is very simple and it uses a static EntityManager object. Here the code:
public class EntityFacade {
     private static EntityManager em = Persistence.createEntityManagerFactory("ElectroManager").createEntityManager();
     private static Logger logger=Logger.getLogger(EntityFacade.class);
     public static void insertCliente(Cliente c)
          logger.debug("Inserisco cliente nel db: " + c);
          em.getTransaction().begin();
          c.setId(getNextIdForTable("Cliente"));
          em.persist(c);
          em.getTransaction().commit();
If I call the method from inside a main it works well, so I think the problem is not the classpath neither the URL in the persistence.xml. However the URL is:
<property name="toplink.jdbc.url" value="jdbc:derby:c:/programmi/ElectroManager/db/electroManager"/>
I use the latest build version of TopLink.
Thanks.

NoSuchElementException when using sequence table in Toplink with Oracle 9i

Hi,
UnitOfWork(11608452)--Connection(15933498)--UPDATE SEQUENCE SET SEQ_COUNT = SEQ_COUNT + 1000 WHERE SEQ_NAME = 'ABN_NOTIF_SEQ'
UnitOfWork(11608452)--Connection(15933498)--SELECT SEQ_COUNT FROM SEQUENCE WHERE SEQ_NAME = 'ABN_NOTIF_SEQ'
ClientSession(17794660)--Connection(15933498)--commit transaction
java.util.NoSuchElementException
     at java.lang.Throwable.fillInStackTrace(Native Method)
     at java.lang.Throwable.fillInStackTrace(Compiled Code)
     at java.lang.Throwable.<init>(Compiled Code)
     at java.lang.Exception.<init>(Compiled Code)
     at java.lang.RuntimeException.<init>(Compiled Code)
     at java.util.NoSuchElementException.<init>(NoSuchElementException.java:35)
     at java.util.Vector.firstElement(Compiled Code)
     at TOPLink.Private.DatabaseAccess.DatabasePlatform.sequenceTableGetSequenceNumberNamed(Compiled Code)
     at TOPLink.Private.DatabaseAccess.DatabasePlatform.getSequenceNumberNamed(Compiled Code)
     at TOPLink.Public.PublicInterface.Session.getNextSequenceNumberValue(Compiled Code)
     at TOPLink.Public.PublicInterface.UnitOfWork.getNextSequenceNumberValue(Compiled Code)
     at TOPLink.Private.Descriptors.ObjectBuilder.assignSequenceNumber(Compiled Code)
This is the error I am getting occasionally. I am using Toplink with custom sequence table and pre-allocation size is 1000.
Can you Please advise me on this problem.
Thanks in Advance,
Durga

hello,
i m using msync for synchronization on Pocket PC 2003 with eVB. I dont know about msyncCom.
i have mentioned a part of my code where the problem is found.
rsmastbl.Open tblnm, conn, adOpenKeyset, adLockOptimistic
MsgBox tblnm & " opened"
'get the key fields to be compared in the query to get required record
MsgBox rsmastbl.Fields(1).name
keyfldnm1 = rsmastbl.Fields(1).name
MsgBox "keyfldnm got value = " & keyfldnm1
rsmastbl.Close
MsgBox "keyfldnm got value = " & keyfldnm1
Now here the value of keyfldnm1 before closing the record set is found to be correct.
But the message box after closing the record set shows no value in the keyfldnm1.
its very urgent....
if anybody can help me
thanx

Toplink with sql server

I have sucessfully used Toplink with Oracle. ow I have to use it with MS SQL server and I am having problems. First of all, in the Mapping Worbench, the only SQL server driver listed is weblogic.jdbc.mssqlserver4.Driver. Why can't I use the regular ms sql driver, com.microsoft.jdbc.sqlserver.SQLServerDriver? Why should the mapping workbench be tied to Weblogic? If one did not have Weblogic, would it be impossible to use Toplink with SQL server? Well, I have Weblogic, so I tried using the weblogic driver with the url jdbc:microsoft:sqlserver://<host ip>:1433;DatabaseName=<db name>. When I try to connect, a dialog box appears that says: "java.sql.SQLException $$$$$$$$$$ License Exception $$$$$$$$$$ Missing license for: WebLogic Server 6.1. $$$$$$$$$$ License Exception $$$$$$$$$$ Username or password could be invalid." I have weblogic.jar in the classpath. I tried adding the line SET WLS61_HOME=M:\bea610\wlserver6.1 to workbench.cmd. It didn't help. Any suggestions?

I already tried this. It does not work. I put the following jars in the classpath in workbench.cmd: msbase.jar;mssqlserver.jar;msutil.jar. Then I start workbench. When I try to enter com.microsoft.jdbc.sqlserver.SQLServerDriver as the driver, I get an exception. Here is the stacktrace:
Exception occurred during event dispatching:
java.lang.ClassCastException: com.webgain.openapi.foundation.uitools.WGDefaultListModel
     at com.webgain.workbench.ui.db.BldrLoginInfoPanel.actionPerformed(Unknown Source)
     at com.webgain.openapi.foundation.uitools.WGListChooser.fireActionEvent(WGListChooser.java:664)
     at com.webgain.openapi.foundation.uitools.WGListChooser$ListDataHandler.contentsChanged(WGListChooser.java:473)
     at javax.swing.AbstractListModel.fireContentsChanged(Unknown Source)
     at com.webgain.openapi.foundation.uitools.WGDefaultListModel.setSelectedItem(WGDefaultListModel.java:740)
     at com.webgain.openapi.foundation.uitools.WGListChooser.setSelectedItem(WGListChooser.java:1446)
     at com.webgain.openapi.foundation.plaf.basic.WGBasicListChooserUI$ListChooserModel.setSelectedItem(WGBasicListChooserUI.java:527)
     at javax.swing.JComboBox.actionPerformed(Unknown Source)
     at javax.swing.plaf.basic.BasicComboBoxUI$EditorFocusListener.focusLost(Unknown Source)
     at java.awt.AWTEventMulticaster.focusLost(Unknown Source)
     at java.awt.AWTEventMulticaster.focusLost(Unknown Source)
     at java.awt.Component.processFocusEvent(Unknown Source)
     at javax.swing.JComponent.processFocusEvent(Unknown Source)
     at java.awt.Component.processEvent(Unknown Source)
     at java.awt.Container.processEvent(Unknown Source)
     at java.awt.Component.dispatchEventImpl(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.LightweightDispatcher.setFocusRequest(Unknown Source)
     at java.awt.Container.proxyRequestFocus(Unknown Source)
     at java.awt.Container.proxyRequestFocus(Unknown Source)
     at java.awt.Container.proxyRequestFocus(Unknown Source)
     at java.awt.Container.proxyRequestFocus(Unknown Source)
     at java.awt.Container.proxyRequestFocus(Unknown Source)
     at java.awt.Container.proxyRequestFocus(Unknown Source)
     at java.awt.Container.proxyRequestFocus(Unknown Source)
     at java.awt.Container.proxyRequestFocus(Unknown Source)
     at java.awt.Component.requestFocus(Unknown Source)
     at javax.swing.JComponent.grabFocus(Unknown Source)
     at javax.swing.JComponent.requestFocus(Unknown Source)
     at javax.swing.text.DefaultCaret.mousePressed(Unknown Source)
     at java.awt.AWTEventMulticaster.mousePressed(Unknown Source)
     at java.awt.AWTEventMulticaster.mousePressed(Unknown Source)
     at java.awt.AWTEventMulticaster.mousePressed(Unknown Source)
     at java.awt.Component.processMouseEvent(Unknown Source)
     at com.webgain.openapi.foundation.uitools.WGPasswordField.processMouseEvent(WGPasswordField.java:99)
     at java.awt.Component.processEvent(Unknown Source)
     at java.awt.Container.processEvent(Unknown Source)
     at java.awt.Component.dispatchEventImpl(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Window.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.EventQueue.dispatchEvent(Unknown Source)
     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.run(Unknown Source)
If I ignore the exception and try to connect to the database anyway, it tries to use the weblogic driver.
Next I manually edited the database xml file and put in the driver name automatically. When I bought up the mapping workbench again, it again threw an exception. However, the correct driver name was in the file, so it did finally let me connect to the database. So it seems there IS a bug, although it has to do with the GUI and not SQL server per se.

Configuring toplink with EJB to transactional control "CMT"

I try to use the EJB transaction CMT but I need to configure toplink to use a transactional control of my EJB container. some body knows how can i do this? and how can I configure the toplink to get JNDI datasource?
Best Regards

I dont think there is anything in Toplink you need to configure for CMT. All the transactional attributes are specified in the ejb-jar.xml file and I dont think you can edit this file using the Workbench or the Sessions Editor. With CMP the Workbench gives you an option to either overwrite this file or update but there is no way to "update" for transactional attributes. You can look at the examples for CMP (under folder advanced) that shows you how to use entity beans with Toplink in a CMP environment and you can look at the ejb-jar.xml file for more information.
Configuring Toplink to get JNDI data source is easy-thats defined in the sessions.xml. Just open the sessions.xml using the sessions editor and click on login tab and then enter in the data source information.
I try to use the EJB transaction CMT but I need to
configure toplink to use a transactional control of
my EJB container. some body knows how can i do this?
and how can I configure the toplink to get JNDI
datasource?
Best Regards

How to verify OC4J uses Oracle Toplink 10.x and not Toplink Essentials

Hi,
We dont want to use the default JPA provider "Toplink *Essentials*" that comes with OC4J. Rather we want to use Oracle Toplink 10.x
I downloaded [Oracle Toplink 10.x|http://www.oracle.com/technology/software/products/ias/htdocs/1013topsoft.html] and followed the installation instructions:- http://www.oracle.com/technology/products/ias/toplink/doc/10131/install/install.html#CHDBBIFB
When i deploy my EJB 3.0 appliation and invoke a JPA Entity, i can see the server log:- NOTIFICATION TopLink, version: Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007))
Do i have to do any other configuration/setting to ensure that i use Oracle Toplink and not Toplink Essentials in OC4J?
Thanks in Advance,
Prashant Tejura
Edited by: user1186295 on May 26, 2009 10:33 AM

rashant,
Hi, there are currently the following providers to choose from - you may want to consult your rep for any details on moving from 10.1.3.4 to 10.1.3.5.
1) TopLink or EclipseLink using EclipseLink JPA - the RI for JPA for WebLogic, OC4J and GlassFish
- EclipseLink JPA is focus of all current JPA development as part of EclipseLink and TopLink
2) Another open-source JPA implementation like OpenJPA or Hibernate
Deprecated:
3) TopLink using TopLink JPA - replaced by (1) TopLink using EclipseLink JPA
4) TopLink using TopLink Essentials JPA - replaced by (1) TopLink using EclipseLink JPA
Changes to server.xml as follows:
http://wiki.eclipse.org/EclipseLink/Examples/JPA/OC4J_Web_Tutorial#Modify_server.xml
<shared-library name="oracle.persistence" version="1.0" library-compatible="true">
          <code-source path="../../../eclipselink/eclipselink.jar"/>
          <code-source path="../../../eclipselink/javax.persistence_*.jar"/>
          <import-shared-library name="oracle.jdbc"/>
     </shared-library>
Changes to persistence.xml as follows: (container-managed JTA datasource)
http://wiki.eclipse.org/EclipseLink/Examples/JPA/OC4J_Web_Tutorial#Persistence.xml
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
<persistence-unit name="example" transaction-type="JTA">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<jta-data-source>jdbc/OracleDS</jta-data-source>
<class>org.eclipse.persistence.example.jpa.server.business.Cell</class>
<properties>
<property name="eclipselink.target-server" value="OC4J"/>
<property name="eclipselink.logging.level" value="FINEST"/>
</properties>
</persistence-unit>
</persistence>
You should see output similar to the following in your server log:
http://wiki.eclipse.org/EclipseLink/Examples/JPA/OC4J_Web_Tutorial#Console_Output
[EL Finest]: 2009-02-26 14:04:34.464--ServerSession(8634980)--Thread(Thread[HTTPThreadGroup-4,5,HTTPThreadGroup])--Begin deploying Persistence Unit example; state Predeployed; factoryCount 1
[EL Info]: 2009-02-26 14:04:34.542--ServerSession(8634980)--Thread(Thread[HTTPThreadGroup-4,5,HTTPThreadGroup])--EclipseLink, version: Eclipse Persistence Services - ***
[EL Fine]: 2009-02-26 14:04:35.213--Thread(Thread[HTTPThreadGroup-4,5,HTTPThreadGroup])--Detected Vendor platform: org.eclipse.persistence.platform.database.oracle.Oracle10Platform
[EL Config]: 2009-02-26 14:04:35.26--ServerSession(8634980)--Connection(5230779)--Thread(Thread[HTTPThreadGroup-4,5,HTTPThreadGroup])--Connected: jdbc:oracle:thin:@//1y.yyy.yy.yy:1521/ORCL
     User: SCOTT
     Database: Oracle Version: Oracle Database 11g Release 11.1.0.0.0 - Production
     Driver: Oracle JDBC driver Version: 10.1.0.5.0
[EL Finest]: 2009-02-26 14:04:35.385--UnitOfWork(5746770)--Thread(Thread[HTTPThreadGroup-4,5,HTTPThreadGroup])--PERSIST operation called on: org.eclipse.persistence.example.jpa.server.business.Cell@9107088( id: null state: null left: null right: null parent: null references: null).
[EL Fine]: 2009-02-26 14:04:35.807--ClientSession(5748500)--Connection(6653899)--Thread(Thread[HTTPThreadGroup-4,5,HTTPThreadGroup])--INSERT INTO EL_CELL (ID, STATE, TSEQ, RIGHT_ID) VALUES (?, ?, ?, ?)
     bind => [551, null, null, null]
thank you
/michael
www.eclipselink.org

Using ValueHolder Indirection With Method Accessing

I am trying to use method getters/setters with value indirection member as described in the documentation
(http://download-east.oracle.com/docs/cd/B31017_01/web.1013/b28218/mapcfg.htm#CEGFHCJF).
My code modifies the mapping with the following lines:
SessionFactory sf= LocatorLocator.getPersistence().getSessionFactory();
Session s= sf.acquireUnitOfWork();
ClassDescriptor d= (ClassDescriptor)s.getDescriptors().get(CharterBusTripLeg.class);
DatabaseMapping m= d.getMappingForAttributeName("scheduledStartingLocation");
m.setGetMethodName("getScheduledStartingLocationHolder");
m.setSetMethodName("setScheduledStartingLocationHolder(oracle.toplink.indirection.ValueHolderInterface)");
The CharterBusTripLeg class has the following members:
private ValueHolderInterface scheduledStartingLocation;
public Location getScheduledStartingLocation();
public void setScheduledStartingLocation(Location scheduledStartingLocation);
public ValueHolderInterface getScheduledStartingLocationHolder();
public void getScheduledStartingLocationHolder(ValueHolderInterface scheduledStartingLocationHolder);
When I try to restore an instance of CharterBusTripLeg, I get the following Exception:
java.lang.NullPointerException
     at oracle.toplink.internal.security.PrivilegedAccessController.getMethodParameterTypes(PrivilegedAccessController.java:394)
     at oracle.toplink.internal.descriptors.MethodAttributeAccessor.getSetMethodParameterType(MethodAttributeAccessor.java:86)
     at oracle.toplink.internal.descriptors.MethodAttributeAccessor.setAttributeValueInObject(MethodAttributeAccessor.java:152)
     at oracle.toplink.mappings.DatabaseMapping.setAttributeValueInObject(DatabaseMapping.java:1119)
     at oracle.toplink.mappings.DatabaseMapping.readFromRowIntoObject(DatabaseMapping.java:1022)
     at oracle.toplink.internal.descriptors.ObjectBuilder.buildAttributesIntoObject(ObjectBuilder.java:244)
     at oracle.toplink.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:525)
     at oracle.toplink.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:381)
     at oracle.toplink.internal.descriptors.ObjectBuilder.buildObjectsInto(ObjectBuilder.java:677)
     at oracle.toplink.internal.queryframework.DatabaseQueryMechanism.buildObjectsFromRows(DatabaseQueryMechanism.java:142)
     at oracle.toplink.queryframework.ReadAllQuery.executeObjectLevelReadQuery(ReadAllQuery.java:483)
     at oracle.toplink.queryframework.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:811)
     at oracle.toplink.queryframework.DatabaseQuery.execute(DatabaseQuery.java:620)
     at oracle.toplink.queryframework.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:779)
     at oracle.toplink.queryframework.ReadAllQuery.execute(ReadAllQuery.java:451)
     at oracle.toplink.publicinterface.Session.internalExecuteQuery(Session.java:2073)
     at oracle.toplink.publicinterface.Session.executeQuery(Session.java:988)
     at oracle.toplink.internal.indirection.QueryBasedValueHolder.instantiate(QueryBasedValueHolder.java:62)
     at oracle.toplink.internal.indirection.QueryBasedValueHolder.instantiate(QueryBasedValueHolder.java:55)
     at oracle.toplink.internal.indirection.DatabaseValueHolder.getValue(DatabaseValueHolder.java:61)
     at oracle.toplink.internal.indirection.UnitOfWorkValueHolder.instantiateImpl(UnitOfWorkValueHolder.java:148)
     at oracle.toplink.internal.indirection.UnitOfWorkValueHolder.instantiate(UnitOfWorkValueHolder.java:217)
     at oracle.toplink.internal.indirection.DatabaseValueHolder.getValue(DatabaseValueHolder.java:61)
     at oracle.toplink.indirection.IndirectList.buildDelegate(IndirectList.java:202)
     at oracle.toplink.indirection.IndirectList.getDelegate(IndirectList.java:359)
     at oracle.toplink.indirection.IndirectList.size(IndirectList.java:703)
     at test.com.laidlaw.les.charter.charter.DeleteBusTest.checkLegs(DeleteBusTest.java:55)
     at test.com.laidlaw.les.charter.charter.DeleteBusTest.testAddBus(DeleteBusTest.java:79)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
Any suggestions as to what I am doing wrong?
thanks,
chas

Chas,
You only need to set the method name without parameters.
m.setSetMethodName("setScheduledStartingLocationHolder");Since these methods will typically only be used by TopLink you can make them protected or private.
Doug

Toplink with mysql: problem with blob size

I'm using toplink with a mysql database. I want to store some data in a blob.
In mysql there exist different sizes of blobs (in my case I need a mediumblob).
But if I create the scheme for the database with jpa/toplink it alway creates only a column with type blob.
I can explicitly tell the database to use a mediumblob by this:
@Column("MEDIUMBLOB")
But by doing this I limit my program to mysql of course, as this data type is not known to other databases.
Does anybody know a more elegant solution to setting the blob size?
for example with hibernate it can be done this way:
@Column(length=666666)

Looks like you are using JPA, and in JPA you would set the columnDefinition to the type that you want, e.g.
@Lob
@Column(name="BLOBCOL", columnDefinition="MEDIUMBLOB")
byte[] myByteData;
As you mentioned, this does introduce a dependency on the database. However, you can always either put the Column metadata in XML, or override it with something else later in XML.
The length attribute was intended and specified for use with Strings but I guess there is no reason why it couldn't be used for BLOBs as well (please enter an enhancement request, or submit the code to add the feature to EclipseLink). Be aware, though, that doing so at this stage is going to be introducing a dependency on the provider to support a non-spec defined feature.

Can i use post-gre with ADF -BC ?

Hie
I do have postgre database with me.. and can i use ADF-BC with it?
Vik

We haven't tested ADF BC with Postgres.
Try using Toplink or JPA.
Or get the free Oracle XE database.

Which give higher performance TopLink with CMP or session facade

In our project we plan to use TopLink which one give higher performance
TopLink with CMP
Or TopLink with session faÃ§ade
thanks in advance

Which give higher performance TopLink with CMP or session Bean

How do I use your iPhone with multiple iTunes libraries

Hi, I have my music spread out between 3 seperate Itunes libraries on 3 different profiles on my computer. I have the newest generation Ipod Nano, Ipod Shuffle, and Iphone 4s. My Ipod's are both full, so I've decided to start putting music onto my phone. With my Ipod's, I can plug them into one profile on the computer, download the music on the Itunes library that exists on that profile, then do the same with the other profiles with no issue. However when I try to do this with my phone, It asks me to erase the music I have gotten from one Itunes library and sync with the current library, as soon as I plug it in to a different Itunes on one of the other profiles. I have my Iphone configured with the Manually manage music option, and I still haven't found a way to use my Iphone with multiple music libraries. PLEASE HELP

http://support.apple.com/kb/PH12113 - If you use manual syncing, you can sync items from more than one iTunes library to your iPod. (You can sync iPod touch, iPhone, and iPad with only one iTunes library.)
http://support.apple.com/kb/HT1202 - When manually managing content, you can add content from multiple libraries to your iPod or iPad. Even when manually managing music, some content may be available from only one library at time. This includes all content on iPhone and video content on iPod and iPad.
They seem inconsistent as far as the iPad is concerned but in both articles the iPhone appears to only be able to sync to one library at a time.
Troubleshooting Home Sharing - http://support.apple.com/kb/TS2972

Using multiple desktops with a 4 finger swipe on a Mac Book Pro running Lion- is there a way that I can allow Safari open on several but not all?? Looks like I can set it for one but not others. All, one, or nothing

Using multiple desktops with a 4 finger swipe on a Mac Book Pro running Lion- is there a way that I can allow Safari open on several but not all?? Looks like I can set it for one but not others. All, one, or nothing

Hey Eric,
Thanks for taking the time. Unfortunately no that does not solve it. Same as swipe it will get me there and it will show separate programs spaced out. The issue I am having is that all my open word files are bunched up in a pile on top of each other. I can see the edges of each one but I want them to be separated from each other enough that I can visually identify what file is what.
Again, thanks for trying, it is appreciated.

Error while using between operator with sql stmts in obiee 11g analytics

Hi All,
when I try to use between operator with two select queries in OBIEE 11g analytics, I'm getting the below error:
Error Codes: YQCO4T56:OPR4ONWY:U9IM8TAC:OI2DL65P
Location: saw.views.evc.activate, saw.httpserver.processrequest, saw.rpc.server.responder, saw.rpc.server, saw.rpc.server.handleConnection, saw.rpc.server.dispatch, saw.threadpool.socketrpcserver, saw.threads
Odbc driver returned an error (SQLExecDirectW).
State: HY000. Code: 10058. [NQODBC] [SQL_STATE: HY000] [nQSError: 10058] A general error has occurred. [nQSError: 43113] Message returned from OBIS. [nQSError: 27002] Near <select>: Syntax error [nQSError: 26012] . (HY000)
can anyone help me out in resolving this issue.

Hi All,
Thank u all for ur replies, but I dint the exact solution for what I'm searching for.
If I use the condition as
"WHERE "Workforce Budget"."Used Budget Amount" BETWEEN MAX("Workforce Budget"."Total Eligible Salaries") AND MAX("Workforce Budget"."Published Worksheet Budget Amount"",
all the data will be grouped with the two columns which I'm considering in the condition.
my actual requirement with this query is to get the required date from a table to generate the report either as daily or weekly or monthly report. If I use repository variables, variables are not getting refreshed until I regenerate the server(which I should not do in my project). Hence I have created a table to hold weekly start and end dates and monthly start and end dates to pass the value to the actual report using between operator.
please could anyone help me on this, my release date is fast approaching.

Are there advantages to using Adobe Bridge with Premiere Pro?

I frequently use pictures with my videos. Normally, I use Windows Explorer with the picture viewer to browse for what I'd like to use. I've experimented with Bridge, finding it to be a memory hog and slow. It got me wondering - Are there advantages vs. Windows Explorer?

Bridge can be used to easily add hierarchical keywords to large amounts of clips (and afaik it's the only tool in the Adobe suit that can do hierarchical keywording with video files). Those keywords can then be used to find clips inside of Premiere. On large projects (1000+ clips) that can be a life saver.
Apart from this and the features you mentioned (the cross software color stuff is useless for video as of CS6), I did not find any use to Bridge for video. Plus as you said, it is a memory hog, slow and in my own experience unstable with / not adapted to video.

Using AJA IO with the FCP Voice Over Tool

Has anyone used the io with the VO tool? I have gotten it to work in the past, however, there are a number of convoluted settings to go through to get it to work. It seems intermittent. Today it doesnt want to work at all.
Does anyone have a list of the specific A/V settings, Capture presets, etc, that i need to have set in order for this to work?
FYI--I have never had a problem capturing from tape--(using log and capture with beta, digibeta, dv, vhs)--only when capturing analog audio using the VO tool.
gracias.
dk

You can do it here, in the Audio/Video settings under the Final Cut Pro menu. Click on the Capture Presets tab, then go to Generic Capture Template, duplicate it, then edit. Give it a name that you can recognize when you need to set up your project.

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