Server-side dependencies have to go into your WAR's WEB-INF/lib, not (not
necessarily) your build path.
On Tuesday, August 27, 2013 9:37:20 PM UTC+2, luca ardizzoni wrote:
>
> I'm writing a project with Eclipse using EclipseLink ,hsqldb and GWT .
> When I try a do a RPC I always get stuck on this exception :
>
> SEVERE: javax.servlet.ServletContext log: Exception while dispatching
> incoming RPC call com.google.gwt.user.server.rpc.UnexpectedException:
> Service method 'public abstract void
> it.myProject.client.service.EmployeeService.createEmployee()' threw an
> unexpected exception: javax.persistence.PersistenceException: No
> persistence providers available for >"myDB" after trying the following
> discovered implementations: org.datanucleus.api.jpa.PersistenceProviderImpl
>
> This is my main file *myProject.java* where I execute the RPC:
>
> public class MyProject implements EntryPoint {
>
> private final EmployeeServiceAsync aService = (EmployeeServiceAsync)
> GWT.create(EmployeeService.class);
>
> @Override
> public void onModuleLoad() {
>
> aService.createEmployee(new AsyncCallback<Void>() {
> @Override
> public void onFailure(Throwable caught) {
> Window.alert("Creation Employees failed!");
> }
> @Override
> public void onSuccess(Void result) {
> Window.alert("Creation success!");
> }
> });
>
> I've specified the name of my Database and the provider in *
> persistence.xml* :
>
> <persistence-unit name="myDB" transaction-type="RESOURCE_LOCAL">
>
> <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
>
> In my *build path* I've put: eclipselink.jar ; gwt-servlet.jar ;
> hsqldb.jar ; javax.persistence_2.0.4.jar ; persistence-api-sources-2.0.jar
> ; smartgwt.jar
>
> Please give any advices you think and feel free to ask if you need other
> code or anything.
> I'm blocked on this since a week and noone in the web seems to have the
> same problem .
>
>
>
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