FAB doesn't really solve the issue: it just apply the Maven POM
dependency model in OSGi (using a deployer).
Really, I don't see a lot of values comparing to BND and rewrapping.
Regards
JB
On 01/29/2013 12:17 PM, Claus Ibsen wrote:
On Tue, Jan 29, 2013 at 11:50 AM, Gonzalo Aguilar Delgado
<[email protected]> wrote:
Hello all,
I'm new to this forum so please be patient.
I was googling for about 2 weeks how to solve some problems I have with
this project. Maybe someone here can throw some light into my dark.
Hi
Yes I totally agree OSGi bundles can be a library hell.
That is why there is an alternative FAB which I blogged about here
http://www.davsclaus.com/2012/08/osgi-deployment-made-easy-with-fab.html
We have users on Fuse ESB that uses Hibernate with FAB deployments and
dont have the OSGi hell.
An alternative some people have done as well, is to create one giant
uber JAR / bundle with all the Hibernate JARs and its dependencies.
And possible enable dynamic osgi imports and whatnot. But yeah its a
hell to manage...
First.
Why do we have to repackage every library is not in the form of
bundle?
It would be easier, more manageable, to wrap missing libraries (not
in the form of a bundle) around a container that describes its contents.
This way something like, say, apache.commons does not need to be
unpacked and packed with a new manifiest. This method will break signing
if any, but proposed one does not.
Second.
This project (in this case OSGi-> Felix) is supposed to be created
to resolve library mess. But I can only find references to peculiarities
to the implementation of the class loaders that makes every old project
incompatible without modifications. Say Hibernate. Do I have to use
packages that only springsource Enterprise provides? This is a little
pain because if the bundle is not there, is not anywhere.
Third.
After fighting with dependencies for a long time. I repackaged
hibernate, spring and friend into a new package. And found that nothing
works together. I was smart enough to get spring 3.0.7-RELEASE that
comes with karaf. But found following problem that I'm not able to
solve:
But the class org/hibernate/cfg/Configuration is packaged with the rest.
And it must find it. Where is the problem?
I tried package different versions of hibernate that is the thing that I
can touch. Because Spring is too much to repackage it. So I have to
stick with the two versions included in the container, 3.0.7-RELEASE and
3.1 whatever.
Any help on how to make it work?
I read everywhere: Switch to openJPA it does bundles and works better
with OSGi. But I just have much built on hibernate and don't want to
switch. I want to learn how to make every project work. Don't want to
have to do a switch to another project everytime I have some missing
package (bundle) that makes the project not to work on osgi.
Thank you in advance.
It will be a great project once this kind of problems are solved. In
effect cxf works great!
-----------------------------------
Exception in thread "SpringOsgiExtenderThread-4"
org.springframework.beans.factory.BeanCreationException: Error creating
bean with name 'crmSessionFactoryBean' defined in URL
[bundle://196.0:0/META-INF/spring/hibernate-spring-beans.xml]:
Instantiation of bean failed; nested exception is
org.springframework.beans.BeanInstantiationException: Could not
instantiate bean class
[org.springframework.orm.hibernate3.LocalSessionFactoryBean]:
Constructor threw exception; nested exception is
java.lang.NoClassDefFoundError: org/hibernate/cfg/Configuration
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:964)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:910)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:484)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:455)
at org.springframework.beans.factory.support.AbstractBeanFactory
$1.getObject(AbstractBeanFactory.java:293)
at
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:290)
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:192)
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:567)
at
org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)
at
org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.access$1600(AbstractDelegatedExecutionApplicationContext.java:69)
at
org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext$4.run(AbstractDelegatedExecutionApplicationContext.java:355)
at
org.springframework.osgi.util.internal.PrivilegedUtils.executeWithCustomTCCL(PrivilegedUtils.java:85)
at
org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.completeRefresh(AbstractDelegatedExecutionApplicationContext.java:320)
at
org.springframework.osgi.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor$CompleteRefreshTask.run(DependencyWaiterApplicationContextExecutor.java:132)
at java.lang.Thread.run(Thread.java:679)
Caused by: org.springframework.beans.BeanInstantiationException: Could
not instantiate bean class
[org.springframework.orm.hibernate3.LocalSessionFactoryBean]:
Constructor threw exception; nested exception is
java.lang.NoClassDefFoundError: org/hibernate/cfg/Configuration
at
org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:141)
at
org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:74)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:957)
... 15 more
Caused by: java.lang.NoClassDefFoundError:
org/hibernate/cfg/Configuration
at
org.springframework.orm.hibernate3.LocalSessionFactoryBean.<init>(LocalSessionFactoryBean.java:189)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at
java.lang.reflect.Constructor.newInstance(Constructor.java:532)
at
org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:126)
... 17 more
--
Jean-Baptiste Onofré
[email protected]
http://blog.nanthrax.net
Talend - http://www.talend.com
