[Hibernate] Primitive types and null
Hi, We are migrating existing project. I came across the problem I have beans with primitive type. When the corresponding persistent value in database is null. The whole application fails. Gives the error that null cannot be assigned to primitive values I totally agree with this behaviour. So I am changing my whole primitives to wrapper classes.(ie float -> Float , char -> Character). Or is there any cheeze way to bypass this. Am I doing this right Your reply would be highly appreciated. Please suggest. regards prasad chandrasekaran.
Re: [Hibernate] Primitive types and null
You *could* use a UserType to workaround Prasad Iyer wrote: Hi, We are migrating existing project. I came across the problem I have beans with primitive type. When the corresponding persistent value in database is null. The whole application fails. Gives the error that null cannot be assigned to primitive values I totally agree with this behaviour. So I am changing my whole primitives to wrapper classes.(ie float -> Float , char -> Character). Or is there any cheeze way to bypass this. Am I doing this right Your reply would be highly appreciated. Please suggest. regards prasad chandrasekaran. -- Gavin King JBoss Group +61 410534454 http://hibernate.org --- This SF.Net email sponsored by: ApacheCon 2003, 16-19 November in Las Vegas. Learn firsthand the latest developments in Apache, PHP, Perl, XML, Java, MySQL, WebDAV, and more! http://www.apachecon.com/ ___ hibernate-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/hibernate-devel
[Hibernate] EHCache and JDK1.4
Hi EHCache does require the use of JDK1.4. Specifically we use: - LinkedHashMap, which provides us with an LRU HashMap - JDK1.4 logging - SoftRefererences I guess there is a lot of production code out there on JDK1.3 and earlier. I could replace the JDK1.4 logging with commons logging and the java.util.LinkedHashMap with something similar. I was pretty keen to use the java.util.LinkedHashMap, because the combination of a doubly-linked list combined with a Hashmap in JCS was the source of the memory leak in it. The memory store code went from around 1500 lines down to a few hundred and became much simpler to understand. Greg Luck --- This SF. Net email is sponsored by: GoToMyPC GoToMyPC is the fast, easy and secure way to access your computer from any Web browser or wireless device. Click here to Try it Free! https://www.gotomypc.com/tr/OSDN/AW/Q4_2003/t/g22lp?Target=mm/g22lp.tmpl ___ hibernate-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/hibernate-devel
Re: [Hibernate] EHCache and JDK1.4
On 15 Nov (09:10), Greg Luck wrote: > I was pretty keen to use the java.util.LinkedHashMap, because the > combination of a doubly-linked > list combined with a Hashmap in JCS was the source of the memory leak > in it. The memory store code > went from around 1500 lines down to a few hundred and became much > simpler to understand. Instead of a requirement for JDK 1.4, can you replace the 1500 lines of code with something better and only use 1.3? Gavin, I'm rewriting/adding the cache documentation, and some things are not perfectly clear, like the future for JCS and our "recommended", easy to install/config bundled cache. I'd say JDK 1.3 compatibility is a must for Hibernate, it even was for the last projects I did. -- Christian Bauer [EMAIL PROTECTED] --- This SF. Net email is sponsored by: GoToMyPC GoToMyPC is the fast, easy and secure way to access your computer from any Web browser or wireless device. Click here to Try it Free! https://www.gotomypc.com/tr/OSDN/AW/Q4_2003/t/g22lp?Target=mm/g22lp.tmpl ___ hibernate-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/hibernate-devel
[Hibernate] Random object query
How can I do something like the following, the hibernate way?? select * from foo where bar='baz' order by RAND() LIMIT 0,1; Of course what I am doing here is selecting a single random row (object) Thanks, Ron --- This SF. Net email is sponsored by: GoToMyPC GoToMyPC is the fast, easy and secure way to access your computer from any Web browser or wireless device. Click here to Try it Free! https://www.gotomypc.com/tr/OSDN/AW/Q4_2003/t/g22lp?Target=mm/g22lp.tmpl ___ hibernate-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/hibernate-devel
Re: [Hibernate] EHCache and JDK1.4
We already have a dependency to commons-collections, so perhaps just use commons SequencedHashMap instead of LinkedHashMap. Greg Luck wrote: Hi EHCache does require the use of JDK1.4. Specifically we use: - LinkedHashMap, which provides us with an LRU HashMap - JDK1.4 logging - SoftRefererences I guess there is a lot of production code out there on JDK1.3 and earlier. I could replace the JDK1.4 logging with commons logging and the java.util.LinkedHashMap with something similar. I was pretty keen to use the java.util.LinkedHashMap, because the combination of a doubly-linked list combined with a Hashmap in JCS was the source of the memory leak in it. The memory store code went from around 1500 lines down to a few hundred and became much simpler to understand. Greg Luck --- This SF. Net email is sponsored by: GoToMyPC GoToMyPC is the fast, easy and secure way to access your computer from any Web browser or wireless device. Click here to Try it Free! https://www.gotomypc.com/tr/OSDN/AW/Q4_2003/t/g22lp?Target=mm/g22lp.tmpl ___ hibernate-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/hibernate-devel -- Gavin King JBoss Group +61 410534454 http://hibernate.org --- This SF. Net email is sponsored by: GoToMyPC GoToMyPC is the fast, easy and secure way to access your computer from any Web browser or wireless device. Click here to Try it Free! https://www.gotomypc.com/tr/OSDN/AW/Q4_2003/t/g22lp?Target=mm/g22lp.tmpl ___ hibernate-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/hibernate-devel
[Hibernate] JavaPolis
http://www.bejug.org/bejugPortal/appmanager/BeJUG/JP03?_nfpb=true&_pageLabel=P4022 see anyone we know? -- Gavin King JBoss Group +61 410534454 http://hibernate.org --- This SF. Net email is sponsored by: GoToMyPC GoToMyPC is the fast, easy and secure way to access your computer from any Web browser or wireless device. Click here to Try it Free! https://www.gotomypc.com/tr/OSDN/AW/Q4_2003/t/g22lp?Target=mm/g22lp.tmpl ___ hibernate-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/hibernate-devel
[Hibernate] Re: hibernate problem
hi, I solved this problem by using the new oracle driver. regards prasad chandrasekaran - Original Message - From: "Dongli Zhang" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, November 14, 2003 10:43 PM Subject: hibernate problem > hi prasad, > > I have the same problem with you. > How do you work it out? > > Thanks. > > dongli zhang > > > --- > I get this error can anyone help me in solving this > java.lang.AbstractMethodError: > oracle.jdbc.driver.OracleDatabaseMetaData.supportsResultSetType(I)Z > > at > net.sf.hibernate.impl.SessionFactoryImpl.(SessionFactoryImpl.java:163) > > at > net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:59 4) > > at org.presci.walnut.EmployeeImpl.(EmployeeImpl.java:28) > > Exception in thread "main" > > regards > prasad chandrasekaran > > --- This SF. Net email is sponsored by: GoToMyPC GoToMyPC is the fast, easy and secure way to access your computer from any Web browser or wireless device. Click here to Try it Free! https://www.gotomypc.com/tr/OSDN/AW/Q4_2003/t/g22lp?Target=mm/g22lp.tmpl ___ hibernate-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/hibernate-devel
