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From satsuma <karijak...@hotmail.com>
Subject Re: Where do I get javax.persistence package?
Date Tue, 23 Oct 2007 18:52:01 GMT

I got rid off the compilation errors, although I have errors while deploying,
but I'll try to read about EJB 3.0 and solve these issues myself. I'll get
back to the forum, if I can not solve the problems.

I installed Netbeans on my computer, because I heard that it's the best for
Java EE development, but it runs so darn slowly that it's painful to use.
I'll give Eclipse a try also, maybe that'll be faster.

Thanks to all for their help.



Dain Sundstrom wrote:
> 
> If you're not using Eclipse (free) or Intellij ($$$)  IDE, I suggest  
> you give one of them a try as they will catch all of these errors for  
> you, and will automatically perform annoying tasks like managing  
> imports.
> 
> -dain
> 
> On Oct 23, 2007, at 3:21 AM, Karan Malhi wrote:
> 
>> You will need to add the import for the javax.annotation package.
>> Please also add geronimo-annotation_1.0_spec-1.1.jar to the classpath.
>>
>> On 10/23/07, satsuma <karijakari@hotmail.com> wrote:
>>>
>>> Thanks for the help Dain, but still not working.
>>>
>>> @Resources does not work either. The error message is the same  
>>> "Cannot find
>>> symbol: class Resources". I also tried with @Resource inside the  
>>> class like
>>> you said, but no success. I added geronimo-activation...jar to my  
>>> classpath
>>> so that the compiler won't give error about the DataSource.
>>>
>>>
>>>
>>> Dain Sundstrom wrote:
>>>>
>>>> The class level annotation for declaring resource jndi entries is
>>>> @Resources:
>>>>
>>>>    @Resources({ @Resource(name="PostgreSQL Database",
>>>> type=DataSource.class) })
>>>>
>>>> Also the type attribute is a java.lang.Class object not a
>>>> java.lang.String object.
>>>>
>>>> BTW it is much easier to use field injection like this:
>>>>
>>>>    @Stateless
>>>>    public class HelloBean implements Hello {
>>>>      @Resource
>>>>      private DataSource dataSource;
>>>>
>>>>      public String sayHello() {
>>>>        return "Hello from EJB world!";
>>>>      }
>>>>    }
>>>>
>>>> This way you can avoid all the annoying boiler plate JNDI code.
>>>>
>>>> -dain
>>>>
>>>> On Oct 22, 2007, at 10:02 AM, satsuma wrote:
>>>>
>>>>>
>>>>> Hi,
>>>>>
>>>>> This is not actually solved yet. When I try to compile my bean
>>>>> class, I get
>>>>> an error that says:
>>>>>
>>>>> HelloBean.java:7: cannot find symbol
>>>>> symbol: class Resource
>>>>> @Resource(name = "PostgreSQL Database", type =  
>>>>> "javax.sql.DataSource")
>>>>>  ^
>>>>> 1 error
>>>>>
>>>>> My source files look like this
>>>>>
>>>>> // Remote interface
>>>>> import javax.ejb.Remote;
>>>>> import java.util.List;
>>>>>
>>>>> @Remote
>>>>> public interface Hello
>>>>> {
>>>>>   public String sayHello();
>>>>> }
>>>>>
>>>>> // Bean class
>>>>>
>>>>> import java.util.List;
>>>>> import javax.ejb.Stateless;
>>>>> import javax.persistence.*;
>>>>>
>>>>> @Resource(name = "PostgreSQL Database", type =  
>>>>> "javax.sql.DataSource")
>>>>> @Stateless
>>>>> public class HelloBean implements Hello
>>>>> {
>>>>>   public String sayHello()
>>>>>   {
>>>>>     return "Hello from EJB world!";
>>>>>   }
>>>>> }
>>>>>
>>>>> There's no database operations yet, because I'm first trying to  
>>>>> get it
>>>>> through the compiler with the Resource annotation. The
>>>>> PersistenceContext
>>>>> annotation does not cause any errors.
>>>>>
>>>>> My classpath is
>>>>>
>>>>> .:/opt/apache-tomcat-6.0.10/lib/servlet-api.jar:
>>>>> /opt/apache-tomcat-6.0.10/lib/jsp-api.jar:
>>>>> /usr/share/java/postgresql-jdbc3-8.1.jar:/opt/junit/junit-4.4.jar:
>>>>> /opt/openejb-3.0-beta-1/lib/geronimo-ejb_3.0_spec-1.0.jar:
>>>>> /opt/openejb-3.0-beta-1/lib/openejb-client-3.0-beta-1.jar:
>>>>> /opt/openejb-3.0-beta-1/lib/geronimo-jpa_3.0_spec-1.1.jar
>>>>>
>>>>> Is there something missing?
>>>>>
>>>>> Java is version 1.5.0_08.
>>>>>
>>>>>
>>>>> satsuma wrote:
>>>>>>
>>>>>> Thanks Dario, that does it!
>>>>>>
>>>>>> Allthough I have no problem with the compilation part any more, 

>>>>>> but I
>>>>>> still can't get the database connection to work. I'll make a
>>>>>> thread for
>>>>>> the new question, to keep this thread under the current subject.
>>>>>>
>>>>>>
>>>>>> Dario Laverde wrote:
>>>>>>>
>>>>>>> Hello Satsuma,
>>>>>>>
>>>>>>> Add the following 2 jars to your classpath:
>>>>>>>
>>>>>>> geronimo-ejb_3.0_spec-1.0.jar
>>>>>>> geronimo-jpa_3.0_spec-1.1.jar
>>>>>>>
>>>>>>> For an example (using Tomcat) check my blog entry at:
>>>>>>> http://javanotebook.com/2007/09/28/openejb_3_and_tomcat_6.html
>>>>>>>
>>>>>>> -Dario
>>>>>>>
>>>>>>>> Thank you Mohammad for your reply.
>>>>>>>>
>>>>>>>> I can not find such a jar file from the lib directory. The
only
>>>>>>>> ones
>>>>>>>> close
>>>>>>>> to that(containing 'persistence') are openjpa-
>>>>>>>> persistence-1.0.0.jar and
>>>>>>>> openjpa-persistence-jdbc-1.0.0.jar, so I added both of those
 
>>>>>>>> to my
>>>>>>>> classpath, but that didn't solve the problem. Any more tips?
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> Mohammad Nour El-Din wrote:
>>>>>>>>>
>>>>>>>>> Try including the persistence-api-XXXX.jar found in the
>>>>>>>>> ${openejb.home}/lib
>>>>>>>>> directory .
>>>>>>>>>
>>>>>>>>> On 10/18/07, satsuma <karijakari@hotmail.com> wrote:
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Hi,
>>>>>>>>>>
>>>>>>>>>> I have just started EJB programming and I ran into
a problem,
>>>>>>>>>> when
>>>>>>>>>> trying
>>>>>>>>>> to
>>>>>>>>>> implement a simple stateless session bean that accesses
>>>>>>>>>> database. I
>>>>>>>>>> have
>>>>>>>>>> been following the instruction in the openEJB documentation
 
>>>>>>>>>> page,
>>>>>>>>>> http://openejb.apache.org/databases.html
>>>>>>>>>>
>>>>>>>>>> When I try to compile my class, I get an error that
states
>>>>>>>>>> "package
>>>>>>>>>> javax.persistence.* does not exist" and because of
this I can
>>>>>>>>>> not use
>>>>>>>>>> annotations such as @Resource or @PersistenceContext.
The
>>>>>>>>>> @Stateless
>>>>>>>>>> annotation on the other hand, works as supposed(I
made the
>>>>>>>>>> hello world
>>>>>>>>>> tutorial from the documentation).
>>>>>>>>>>
>>>>>>>>>> I have added geronimo-ejb_3.0_spec-1.0.jar and
>>>>>>>>>> openejb-client-3.0-beta-1.jar
>>>>>>>>>> to my classpath, do I need to add something more?
>>>>>>>>>>
>>>>>>>>>> Thanks.
>>>>>>>>>> --
>>>>>>>>>> View this message in context:
>>>>>>>>>> http://www.nabble.com/Where-do-I-get-javax.persistence-
>>>>>>>>>> package--tf4648542.html#a13279676
>>>>>>>>>> Sent from the OpenEJB User mailing list archive at
Nabble.com.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>> Thanks
>>>>>>>>> - Mohammad Nour
>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> View this message in context:
>>>>>>>> http://www.nabble.com/Where-do-I-get-javax.persistence-package--
>>>>>>>> tf4648542.html#a13281604
>>>>>>>> Sent from the OpenEJB User mailing list archive at Nabble.com.
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>> --
>>>>> View this message in context: http://www.nabble.com/Where-do-I-get-
>>>>> javax.persistence-package--tf4648542.html#a13346735
>>>>> Sent from the OpenEJB User mailing list archive at Nabble.com.
>>>>>
>>>>
>>>>
>>>>
>>>
>>> --
>>> View this message in context: http://www.nabble.com/Where-do-I-get- 
>>> javax.persistence-package--tf4648542.html#a13360830
>>> Sent from the OpenEJB User mailing list archive at Nabble.com.
>>>
>>>
>>
>>
>> -- 
>> Karan Singh Malhi
> 
> 
> 

-- 
View this message in context: http://www.nabble.com/Where-do-I-get-javax.persistence-package--tf4648542.html#a13370984
Sent from the OpenEJB User mailing list archive at Nabble.com.


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