Hello.

I must get some data in entity from a stored proc.
this data belons to this entity.
It is very old, legacy DB.

For this I need a DataSource.getConnection()
like this

Connection conn = ds.getConnection();
CallableStatement cs = conn.prepareCall(sql);

How can I inject DataSource, or maybe StatelesBean with this DataSource
in my Entity.

I have tried it with @EJB and @In
but it didn't work. I get:

...
Caused by: java.lang.reflect.InvocationTargetException
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:438)
 ... 61 more
Caused by: java.lang.NullPointerException
 at de.arvatoservices.web_france.entity.CatalogItem.callSP(CatalogItem.java:168)
 at de.arvatoservices.web_france.entity.CatalogItem.getPysits(CatalogItem.java:141)
 at de.arvatoservices.web_france.entity.CatalogItemHome.getPysits(CatalogItemHome.java:72)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.jboss.seam.util.Reflections.invoke(Reflections.java:20)
 at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:57)
 at org.jboss.seam.interceptors.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:47)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
 at org.jboss.seam.interceptors.ManagedEntityIdentityInterceptor.aroundInvoke(ManagedEntityIdentityInterceptor.java:37)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
 at org.jboss.seam.interceptors.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:34)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
 at org.jboss.seam.interceptors.TransactionInterceptor$1.work(TransactionInterceptor.java:32)
 at org.jboss.seam.util.Work.workInTransaction(Work.java:37)
 at org.jboss.seam.interceptors.TransactionInterceptor.aroundInvoke(TransactionInterceptor.java:27)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
 at org.jboss.seam.interceptors.MethodContextInterceptor.aro
13:32:15,028 ERROR [STDERR] undInvoke(MethodContextInterceptor.java:27)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
 at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:103)
 at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:151)
 at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:87)
 at de.arvatoservices.web_france.entity.CatalogItemHome_$$_javassist_152.getPysits(CatalogItemHome_$$_javassist_152.java)
 ... 66 more