Hi,
need some more info.
Please send the class-descriptor of
your 'persistentObject'
regards,
Armin
----- Original Message -----
From: "Ajitesh Das" <[EMAIL PROTECTED]>
To: "OJB Users List Armin Waibel"
<[EMAIL PROTECTED]@code-au-lait.de>; "OJB Users List"
<[EMAIL PROTECTED]>
Sent: Wednesday, February 26, 2003 11:34 AM
Subject: RE: Brrow broker from pool is failing : OptimisticLockException
in PB Api
> Hi Armin :
> Thanks for your reply.
> >first, it seems that you mix the JDO-api with the PB-api in your code
> >PersistenceManager --> JDO
> >PersistenceBroker (PB), PersistenceBrokerFactory (PBF)--> PB-api
> >maybe a typo.
> yes this is a Typo. I am just playing PB api
>
> > I get this "Brrow broker from pool is failing" exception after some
> >success write.
> >Think you forget to call the close method of the PB after use.
> >PB.close() returns
> >the broker to broker pool managed by PBF.
>
>
> Here are the tries I have made :
>
> case 1* If I put PB.close() ... I get exception saying
"OprimisticLockException: Some body using the object"
>
> case 2* If I do not use PB.close() ....I ran out of Broker pool.
>
> here is the structure I am using
>
> Loop :
>
> < condition>
>
> new PersistentObject()
>
> set values;
>
> PB = PersistenceBrokerFactory.defaultPersistenceBroker();
>
> PB.beginTx();
>
> PB.store(myObj)
>
> PB.commitTx()
>
> PB.close() // tried with and without this
>
>
> I have also tried with a static var ...holding obj reference of PB
during my application initialization.
>
> I am still getting Optimistic Lock Exception .... similar to case 2.
>
> thanks
>
> ~ajitesh
>
>
>
>
>
> ----- Original Message -----
> From: "Ajitesh Das" <[EMAIL PROTECTED]>
> To: "OJB Users List" <[EMAIL PROTECTED]>; "OJB Users List"
> <[EMAIL PROTECTED]>; "OJB Users List" <[EMAIL PROTECTED]>;
> "OJB Users List" <[EMAIL PROTECTED]>
> Sent: Wednesday, February 26, 2003 10:45 AM
> Subject: Brrow broker from pool is failing : OptimisticLockException
in
> PB Api
>
>
> > * Here is my issue :
> > - When I save the "Broker" object reference in a static
> variable and use that in multiple context
> > I get Optimistic Lock exception.
> > - If I do not save the Broker object reference :
> > // pm = PersistenceManager.getInstance(); // return
> Broker.defaultPersistenceBroker()
> > pm = PersistenceBrokerFactory.defaultPersistenceBroker();
> >
> > I get this "Brrow broker from pool is failing" exception after some
> success write. I need to import a big data set into db table from a
CSV
> file and I make this in a *big* loop.
> >
> > Please advise.
> >
> > =========================================
> > java.util.NoSuchElementException
> > at
>
org.apache.commons.pool.impl.GenericKeyedObjectPool.borrowObject(Generic
> KeyedObjectPool.java:758)
> > at
>
org.apache.ojb.broker.ta.PersistenceBrokerFactoryDefaultImpl.createPersi
> stenceBroker(Unknown Source)
> > at
>
org.apache.ojb.broker.ta.PersistenceBrokerFactoryDefaultImpl.defaultPers
> istenceBroker(Unknown Source)
> > at
>
org.apache.ojb.broker.PersistenceBrokerFactory.defaultPersistenceBroker(
> Unknown Source)
> > at org.apache.ojb.broker.Identity.<init>(Unknown Source)
> > at org.apache.ojb.broker.cache.ObjectCacheDefaultImpl.cache(Unknown
> Source)
> > at
> org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.storeToDb(Unknown
> Source)
> > at
org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.store(Unknown
> Source)
> > at
org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.store(Unknown
> Source)
> > at
org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.store(Unknown
> Source)
> > at
>
org.apache.ojb.broker.singlevm.DelegatingPersistenceBroker.store(Unknown
> Source)
> > at
>
org.apache.ojb.broker.util.sequence.SequenceGenerator.getNextSequence(Un
> known Source)
> > at
>
org.apache.ojb.broker.util.sequence.SequenceManagerHiLoImpl.getUniqueId(
> Unknown Source)
> > at
>
org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.getUniqueId(Unknown
> Source)
> > at
>
org.apache.ojb.broker.singlevm.DelegatingPersistenceBroker.getUniqueId(U
> nknown Source)
> > at
>
org.apache.ojb.broker.metadata.ClassDescriptor.getAutoIncrementValue(Unk
> nown Source)
> > at
>
org.apache.ojb.broker.metadata.ClassDescriptor.getKeyValuesForObject(Unk
> nown Source)
> > at
> org.apache.ojb.broker.metadata.ClassDescriptor.getKeyValues(Unknown
> Source)
> > at
> org.apache.ojb.broker.metadata.ClassDescriptor.getKeyValues(Unknown
> Source)
> > at org.apache.ojb.broker.Identity.<init>(Unknown Source)
> > at
org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.store(Unknown
> Source)
> > at
org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.store(Unknown
> Source)
> > at
>
org.apache.ojb.broker.singlevm.DelegatingPersistenceBroker.store(Unknown
> Source)
> >
> >
> > -----Original Message-----
> > From: Ajitesh Das
> > Sent: Wed 2/26/2003 1:20 AM
> > To: OJB Users List; OJB Users List; OJB Users List
> > Cc:
> > Subject: RE: OptimisticLockException in PB Api
> >
> >
> >
> > I have checked org.apache.ojb.tutorial1.UCEnterNewProduct.apply()
...
> my main2() method is also same in nature..how come urs is woking and
> mine is not :(
> >
> >
> > -----Original Message-----
> > From: Ajitesh Das
> > Sent: Wed 2/26/2003 1:14 AM
> > To: OJB Users List; OJB Users List
> > Cc:
> > Subject: OptimisticLockException in PB Api
> >
> >
> >
> > I was trying a simple Test program. where I am setting a set
> of objects and what to write them in a DB.I am using PB Api. The very
> first write is a success but throwing exception from 2nd write
onwards.
> What I am doing wrong ?
> >
> > org.apache.ojb.broker.OptimisticLockException: Object has
been
> modified by someone else
> > at Test1.main2(Test1.java:64)
> > at Test1.<init>(Test1.java:23)
> > at Test1.main(Test1.java:27)
> > Caused by: org.apache.ojb.broker.OptimisticLockException:
> Object has been modified by someone else
> > at
> org.apache.ojb.broker.accesslayer.JdbcAccess.executeUpdate(Unknown
> Source)
> > at
> org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.storeToDb(Unknown
> Source)
> > at
> org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.store(Unknown
> Source)
> > at
> org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.store(Unknown
> Source)
> > at
> org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.store(Unknown
> Source)
> > at
>
org.apache.ojb.broker.singlevm.DelegatingPersistenceBroker.store(Unknown
> Source)
> >
> > Here is my caller method:
> >
> > public Test1 ()
> > {
> > main2();
> > main2();
> > }
> >
> > And here is the called method
> >
> > public void main2 ( )
> > {
> > PersistenceManager pm = null;
> > Transaction tx = null;
> > Sample zs = new Sample();
> > zs.setAttr1((long)10);
> > zs.setAttr2(30);
> > zs.setAttr3((long)40);
> >
> > try {
> > pm = PersistenceManager.getInstance(); // return
> Broker.defaultPersistenceBroker()
> > pm.beginTransaction();
> > pm.Store(zs);
> > pm.commitTransaction();
> >
> > }
> > catch (Exception ex) {
> > ex.printStackTrace();
> > System.out.println("Error in Test1 1 ");
> > try {
> > if ( tx != null )
> > pm.abortTransaction();
> >
> > catch (Exception ex1) {
> > }
> > }
> >
> >
> >
> >
> >
> >
> >
> >
>
>
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