java - EntityManager persist silently fails -

i have jax rs server correctly called when post request sent movie in xml format.

@resource(name = "movie") @path("/movie") public class movieresource {      @persistencecontext(unitname = "movieds")     private entitymanager em;      public movieresource()     {         em = persistenceprovider.createentitymanager();     }      @post     @path("/post")     @consumes(     {         mediatype.application_json, mediatype.application_xml     })     public response createmovie(movie movie)     {             if (!em.contains(newmovie))             {                 em.merge(newmovie);             }         string result = "movie created : " + movie;         return response.status(201).entity(movie).build();     } } 

debugging shows no errors whatsoever nothing persisted. datasource jta on eclipselink, here persistence.xml

<?xml version="1.0" encoding="utf-8"?> <persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xsi:schemalocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">   <!-- data source should set in glassfish -->   <persistence-unit name="moviemanager" transaction-type="jta">     <provider>org.eclipse.persistence.jpa.persistenceprovider</provider>     <jta-data-source>jdbc/movieds</jta-data-source>     <properties>       <property name="eclipselink.logging.level" value="all"/>       <property name="eclipselink.ddl-generation" value="create-tables"/>     </properties>   </persistence-unit> </persistence> 

the logs returned eclipselink show no error whatsoever while calling em.merge(), involve sequence creation:

finest: execute query valuereadquery(name="sequence" sql="select seq_count sequence seq_name = #seq_name") fine: select seq_count sequence seq_name = ?     bind => [1 parameter bound] finest: local sequencing preallocation seq_gen: objects: 50 , first: 51, last: 100 info: rar7115: unable set clientinfo connection finest: connection released connection pool [default]. finer: tx committransaction, status=status_active finer: tx internally committing finest: local sequencing preallocation copied preallocation after transaction commit finer: external transaction has committed internally finest: assign sequence object (51 -> net.plarz.entities.logininformation@91229c) 

has idea what's missing? movie class simple , has no dependencies other tables, think simple i'm missing.

edit :

if add flush() after merge() error:

javax.persistence.transactionrequiredexception:  exception description: no externally managed transaction active thread 

you shouldn't call flush() instead create enterprise bean so:

@stateless public class movieejb {   @persistencecontext(unitname = "movieds")     private entitymanager em;      @override     public movie create(movie movie) throws exception     {         em.persist(movie);         return movie;     }      @override     public void delete(movie movie)     {         em.remove(em.merge(movie));     }      @override     public movie update(movie movie) throws exception     {         return em.merge(movie);     } } 

then modify movieresource class so:

@managedbean(name = "restcontroller") @sessionscoped @resource(name = "movie") @path("/movie") public class movieresource {     @ejb     private movieejb movieejb;      public movieresource()     {      }      public movieejblocal getmovieejb()     {         return movieejb;     }      public void setmovieejb(movieejblocal movieejb)     {         this.movieejb = movieejb;     }      @post     @path("/post")     @consumes(     {         mediatype.application_json, mediatype.application_xml     })     public response createmovie(movie movie)     {         getmovieejb().create(movie);         string result = "movie created : " + movie;         return response.status(201).entity(movie).build();     } }