inherit problem

Hello!! I have a problem witth retrieve two classes in a two tables. Classes: A and B. B estends A. When I have one class (example: A) I see if Id (getId()) is null. If its true, I do select MAX and I assing to class (setId()). This work ok, always. In the new case (A and B), when I retrieve

Re: inherit problem

Hi, auto-retrieve does not require auto-increment to be set. You likely made a misstake in your class-definitions and or repository declarations. Stefan Carles Duque wrote: Hello!! I have a problem witth retrieve two classes in a two tables. Classes: A and B. B estends A. When I have one

RE: inherit problem

My repository.xml has this lines as new In class descriptor of A: extent-class class-ref=x.B / In class descriptor of B: reference-descriptor name=super class-ref=x.A auto-retrieve=true auto-update=true auto-delete=true foreignkey field-ref=idB /

Please help me!!!

Hi All, Please read carefully and suggest me solution. I am working with one MNC s/w company.My application is web-based client-server application in which client and server are on different machines and uses same database. One imp thing one client might connect to more than one servers.Each

RE: Collection creation and sorting

Hi Tino, Did you try something like this? class-descriptor class=Company table=tblCompany ... collection-descriptor name=companyTeams element-class-ref=CompanyTeam orderby name=pos / orderby name=c.name / inverse-foreignkey field-ref=CompanyID/

How to test db connection on application startup

Hi, when launching my ojb app I'd like to test if the db connection is available. I thought I can do something like this: try { pb = PersistenceBrokerFactory.defaultPersistenceBroker(); pb.beginTransaction(); pb.commitTransaction(); } catch (Exception e) { throw

Re: How to test db connection on application startup

I changed the code to obtain the connection from the serviceConnectionManager, but the problem remains, I can't catch the thrown java.sql.SQLException. Any ideas? try { pb = PersistenceBrokerFactory.defaultPersistenceBroker(); pb.serviceConnectionManager().getConnection(); } catch

RE: How to test db connection on application startup

Hi Sebastian, I think it would be wiser to specify a validation query in the database repository descriptor to check if the connection is valid *each* time it is used. This will deal with not only the database being unavailable at startup, but throughout the operation of the application. BTW, I

Re: How to test db connection on application startup

Wie würde denn eine generische ValidationQuery aussehen, die einfach überprüft, ob mit einer bestimmten DB/Instanz eine Verbindung hergestellt werden kann? Gelhar, Wallace Joseph wrote: Hi Sebastian, I think it would be wiser to specify a validation query in the database repository descriptor

Re: Second try: (ODMG) Transaction.abort() vs. object rollback

Armin, The Javadocs are admittedly not very clear. From org.odmg.Transaction#abort(): Abort and close the transaction. Calling abort abandons all persistent object modifications and releases the associated locks. Aborting a transaction does not restore the state of modified

Re: Perhaps a little fix for the doc

Hi, thanks for the hint! I will add a note deployment doc. regards, Armin Nouguier Olivier wrote: Hi all, I've just spend few hours to try to retrieve a Transaction with currenTransaction() from an Implementation issued from OJB.getInstance() in a managed environement ( jboss ), it was alway

Re: How to test db connection on application startup

Sorry, forgot to switch to English ... What would a generic ValidationQuery look like, that simply checks if a certain database instance can be connected to? Thanks. Sebastian wrote: Wie würde denn eine generische ValidationQuery aussehen, die einfach überprüft, ob mit einer bestimmten

RE: How to test db connection on application startup

Hi Sebastian, With SQL Server I use something like follows: jdbc-connection-descriptor ... connection-pool maxActive=10 testOnBorrow=true testOnReturn=false testWhileIdle=true timeBetweenEvictionRunsMillis=1

Re: questions: api, old objects, list to column mapping

Hi Robert, Robert wrote: Hi, I have some questions about OJB. There are three APIs that you can use: Persistence Broker, ODMG and JDO. Do you have to choose one of these APIs to use in your project, or is it normal to mix them and use the one that is most convenient at the moment? You have to

Re: Second try: (ODMG) Transaction.abort() vs. object rollback

Hi Steve, Steve Clark wrote: Armin, The Javadocs are admittedly not very clear. From org.odmg.Transaction#abort(): Abort and close the transaction. Calling abort abandons all persistent object modifications and releases the associated locks. Aborting a transaction does not restore

Problem with boolean

Hi!!! I try to mapping a boolean field in oracle. I have put in field-descriptor: jdbc-type=BIT the field in DB is NUMBER(1) the attributte in class is boolean. I use a fieldconversion: conversion=org.apache.ojb.broker.accesslayer.conversions.Boolean2IntFieldConversion in the field-descriptor.

Re: How to test db connection on application startup

Ok, I added the same validationQuery it works with mySQL as well. But when I now turn of the db and start my application it simply exits and now exception is thrown at all. How can I control the behaviour, when the validationQuery doesn't validate? thanks. Gelhar, Wallace Joseph wrote: Hi

Re: Second try: (ODMG) Transaction.abort() vs. object rollback

Steve So what are others doing about this situation? Does Steve everybody write their own snapshot/rollback code? Armin You can simply request the object again after abort. Does Transaction.abort() remove all of its registered objects from the cache? If so, then this solution will

client-server Object Caching

Hi All, Please read carefully and suggest me solution. I am working with one MNC s/w company.My application is web-based client-server application in which client and server are on different machines and uses same database. One imp thing one client might connect to more than one servers.Each

dynamic proxy problem

hi all sir I have a problem with dynamic proxy. can you help me now lock this code after Best regards Ngo Quyet Thang ,dListId=,position=0,identity=,realSubject=unmaterialized[EMAIL PROTECTED]null,dListId=null,position=0,identity=null,realSubject=unmaterialized proxy for UsersBean{1}],]] file

java.lang.ExceptionInInitializerError

I get the following error, which has been driving me crazy for over a week now. I know I am getting connected to the database. I have a datasource in JBoss, and before I got this error, I got other errors that showed that it was connecting to the database, like Access Denied to user blah.