problem with multiple seam component jars in a WAR

[zjsun]

i want to divide my web application into some modules, so i have some seam component jar each with Entity classes, my problem is that Entity in module jar can not be loaded or mapped by JPA, why?

my WAR looks like :
---------------------------------------------

my-application.war/
 META-INF/
 MANIFEST.MF
 WEB-INF/
 web.xml
 components.xml
 faces-config.xml
 pages.xml
 lib/
 jboss-seam.jar
 jboss-seam-ui.jar
 jboss-el.jar
 jsf-facelets.jar
 jsf-api.jar
 jsf-impl.jar
 ...
 classes/
 persistence.xml

 my-module1.jar/
 META-INF/
 MANIFEST.MF
 components.xml(blank)
 org/
 jboss/
 module1/
 User.class
 Login.class
 LoginBean.class
 Register.class
 RegisterBean.class
 seam.properties
 ...
 my-module2.jar/
 META-INF/
 MANIFEST.MF
 components.xml(blank)
 org/
 jboss/
 module2/
 Entity2.class
 seam.properties
 ...
 login.jsp
 register.jsp
 ...

[zjsun]

my WAR looks like :
---------------------------------------------

my-application.war/
 META-INF/
 MANIFEST.MF
 WEB-INF/
 web.xml
 components.xml
 faces-config.xml
 pages.xml
 lib/
 jboss-seam.jar
 jboss-seam-ui.jar
 jboss-el.jar
 jsf-facelets.jar
 jsf-api.jar
 jsf-impl.jar
 ...
 classes/
 META-INF/
 persistence.xml

 my-module1.jar/
 META-INF/
 MANIFEST.MF
 components.xml(blank)
 org/
 jboss/
 module1/
 User.class
 Login.class
 LoginBean.class
 Register.class
 RegisterBean.class
 seam.properties
 ...
 my-module2.jar/
 META-INF/
 MANIFEST.MF
 components.xml(blank)
 org/
 jboss/
 module2/
 Entity2.class
 seam.properties
 ...
 login.jsp
 register.jsp
 ...

[zjsun]

my WAR looks like :
---------------------------------------------

my-application.war/
 META-INF/
 MANIFEST.MF
 WEB-INF/
 web.xml
 components.xml
 faces-config.xml
 pages.xml
 lib/
 jboss-seam.jar
 jboss-seam-ui.jar
 jboss-el.jar
 jsf-facelets.jar
 jsf-api.jar
 jsf-impl.jar
 my-module1.jar/
 META-INF/
 MANIFEST.MF
 components.xml(blank)
 org/
 jboss/
 module1/
 User.class
 Login.class
 LoginBean.class
 Register.class
 RegisterBean.class
 seam.properties
 ...
 my-module2.jar/
 META-INF/
 MANIFEST.MF
 components.xml(blank)
 org/
 jboss/
 module2/
 Entity2.class
 seam.properties
 ...
 ...
 classes/
 META-INF/
 persistence.xml
 login.jsp
 register.jsp
 ...

[nickarls]

Well, I'm no expert but I'm guessing that the same classloader that picks up persistence.xml need to see all the entities that should be used by that persistence context.

[zjsun]

then, any idea about solving my problem?

[techieexchange]

Hi,
If you want to load your Entities (with or without Seam component) from a seperate JAR then you should register those entities in your persistence.xml file like this:

 <persistence-unit name="4cWebDatabase" transaction-type="RESOURCE_LOCAL">
 <provider>org.hibernate.ejb.HibernatePersistence</provider>
 <class>com.fpc.carconfig.frontoffice.entity.Allocation</class>
 <class>com.fpc.carconfig.frontoffice.entity.LoginData</class>
 <class>com.fpc.carconfig.frontoffice.entity.EndUser</class>
 <class>com.fpc.carconfig.frontoffice.entity.TestClass</class>
 <class>com.fpc.carconfig.frontoffice.entity.UserData</class>
 <class>com.fpc.carconfig.frontoffice.entity.Offer</class>
 <properties>
 <property name="hibernate.hbm2ddl.auto" value="update"/>
 <property name="hibernate.show_sql" value="true"/>
 <property name="hibernate.cache.provider_class" value="org.hibernate.cache.HashtableCacheProvider"/>
 <property name="hibernate.dialect" value="org.hibernate.dialect.SQLServerDialect"/>


 </properties>
 </persistence-unit>

Hope this helps.

http://techieexchange.wordpress.com

[zjsun]

i want to use <jar-file> config element with a relative path, instead of the element, how to config a <jar-file> in a relative path?

Thanks!

[srini.ragu]

try this...

<jar-file>file:../lib/myapp1.jar</jar-file>

i.e. file:<relative-path> in the entry for jar file.

or something like file:/WEB-INF/lib/myapp.jar

[zjsun]

"srini.ragu" wrote:
try this...

<jar-file>file:../lib/myapp1.jar</jar-file>

i.e. file:<relative-path> in the entry for jar file.

or something like file:/WEB-INF/lib/myapp.jar

i have all tries, only absolute path works!

[srini.ragu]

in case you want relative path

try this..
<jar-file>file:my-application.war!/WEB-INF/lib/myapp1.jar</jar-file>

otherwise the best/cleaner option is to bundle your application as ear, with the entity jars directly inside the ear

myapp.ear
---entity.jar
---mywebapp.war
------WEB-INF
---------lib

on that case you will just need to specify as <jar-file>entity.jar<jar-file> in the persistence.xml

or just bundle your persistence.xml inside the entity.jar/META-INF

post this question in hibernate forum, you could get better answers.