Отсутствует поставщик сущности для EntityManager в RCP Проект Pulgin

Question

Я получаю провайдер отсутствия сущности для EntityManager для именованного X в приложении RCP Plugin, над которым я работаю. Я использовал hibernate как ORM и javax.persistence. Я использую Derby для моей базы данных. Все hibernate Jar и поддерживающие jars я сгруппированы в плагин и добавлены к текущему проекту, в который я вступаю. Я нахожусь на своем пути. Любая помощь будет оценена по достоинству. я теперь смотрел на разные места для ответов, но не нашел.

Я поместил файл Persistence.xml в путь к классу в/META-INF/persistence.xml. Я попытался поместить persistence.xml на эти места - /RCMSecond/src/persistence.xml и /RCMSecond/src/META-INF/persistence.xml и /RCMSecond/META-INF/persistence.xml все же проект RCP бросает ту же самую ошибку stacktrace.

persistence.xml

<?xml version="1.0" encoding="UTF-8" ?> 
 
<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"> 
 
    <persistence-unit name="RCMSecond" transaction-type="RESOURCE_LOCAL"> 
 
    <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider> 
 
    <class>entity.ColumnMeta</class> 
 
    <class>entity.DataBase_CompositeID</class> 
 
    <class>entity.Files</class> 
 
    <class>entity.Database</class> 
 
    <class>entity.LookUpCols</class> 
 
    <class>entity.Project</class> 
 
    <class>entity.QueryEntity</class> 
 
    <properties> 
 
     <property name="hibernate.dialect" value="org.hibernate.dialect.DerbyDialect" /> 
 
     <property name="hibernate.archive.autodetection" value="class, hbm" /> 
 
     <property name="javax.persistence.jdbc.driver" value="org.apache.derby.jdbc.EmbeddedDriver" /> 
 
     <property name="javax.persistence.jdbc.url" value="jdbc:derby:simpleDB;create=true" /> 
 
     <property name="javax.persistence.jdbc.user" value="root" /> 
 
     <property name="javax.persistence.jdbc.password" value="root" /> 
 
     <property name="hibernate.hbm2ddl.auto" value="update" /> 
 
     <property name="eclipselink.ddl-generation" value="create-tables" /> 
 
     <property name="eclipselink.ddl-generation.output-mode" value="database" /> 
 
     <property name="eclipselink.logging.level" value="SEVERE" /> 
 
     <property name="show_sql" value="true" /> 
 
     <property name="format_sql" value="true"></property> 
 
    </properties> 
 
    </persistence-unit> 
 
</persistence>

GenericDAOImpl.java

package daoImpl; 
 

 
import java.io.Serializable; 
 
import java.util.List; 
 

 
import javax.persistence.EntityManager; 
 
import javax.persistence.EntityManagerFactory; 
 
import javax.persistence.EntityTransaction; 
 
import javax.persistence.Persistence; 
 
import javax.persistence.TypedQuery; 
 

 
import org.hibernate.Criteria; 
 
import org.hibernate.Session; 
 

 
import dao.GenericDAO; 
 
import exceptions.EntityNotPresent; 
 

 
public class GenericDAOImpl < T, ID extends Serializable > implements GenericDAO < T, ID > { 
 

 
    protected EntityManager entityManager; 
 

 
    protected EntityTransaction entityTransaction; 
 

 
    public GenericDAOImpl() { 
 
    super(); 
 

 
    EntityManagerFactory factory = Persistence.createEntityManagerFactory("RCMSecond"); 
 
    this.entityManager = factory.createEntityManager(); 
 
    entityTransaction = this.entityManager.getTransaction(); 
 

 
    } 
 

 
    @ 
 
    Override 
 
    public T save(T t) { 
 
    entityTransaction.begin(); 
 
    entityManager.persist(t); 
 
    entityManager.flush(); 
 
    entityTransaction.commit(); 
 
    return t; 
 
    } 
 

 
    @ 
 
    SuppressWarnings({ 
 
    "unchecked", "rawtypes" 
 
    })@ Override 
 
    public List <T> readAll(String namedQueryName, Class clazz) { 
 
    TypedQuery <T> query = entityManager.createNamedQuery(namedQueryName, clazz); 
 
    return query.getResultList(); 
 
    } 
 

 
    @ 
 
    SuppressWarnings("unchecked")@ Override 
 
    public T readById(@SuppressWarnings("rawtypes") Class clazz, ID id) { 
 
    entityTransaction.begin(); 
 
    T t = (T) entityManager.find(clazz, id); 
 
    entityTransaction.commit(); 
 
    return t; 
 
    } 
 

 
    @ 
 
    Override 
 
    public T update(@SuppressWarnings("rawtypes") Class clazz, ID id, T updated) throws EntityNotPresent { 
 
    if (isEntityExists(clazz, id)) { 
 
     entityManager.merge(updated); 
 
     return updated; 
 
    } else { 
 
     throw new EntityNotPresent("Entity Not found, So Could not be updated"); 
 
    } 
 

 
    } 
 

 
    @ 
 
    Override 
 
    public void delete(@SuppressWarnings("rawtypes") Class clazz, ID removeId) { 
 

 
    if (isEntityExists(clazz, removeId)) { 
 
     T old = readById(clazz, removeId); 
 
     entityTransaction.begin(); 
 
     entityManager.remove(old); 
 
     entityTransaction.commit(); 
 
    } 
 
    } 
 

 
    @ 
 
    SuppressWarnings("unchecked")@ Override 
 
    public boolean isEntityExists(@SuppressWarnings("rawtypes") Class clazz, ID id) { 
 
    return entityManager.find(clazz, id) != null; 
 
    } 
 

 
    @ 
 
    SuppressWarnings("unchecked")@ Override 
 
    public T getFirstRecord(Class <? > clazz) { 
 
    entityTransaction.begin(); 
 
    Session session = entityManager.unwrap(Session.class); 
 
    Criteria queryCriteria = session.createCriteria(clazz); 
 
    queryCriteria.setFirstResult(0); 
 
    queryCriteria.setMaxResults(1); 
 
    T t = (T) queryCriteria.list().get(0); 
 
    entityTransaction.commit(); 
 
    return t; 
 

 
    } 
 

 
    @ 
 
    Override 
 
    public List <T> getByQuery(String queryExecute, Object[] pars, @SuppressWarnings("rawtypes") Class clazz) { 
 

 
    entityTransaction.begin();@ 
 
    SuppressWarnings("unchecked") 
 
    TypedQuery <T> query = entityManager.createQuery(queryExecute, clazz); 
 
    for (int i = 0; i < pars.length; i++) { 
 
     query.setParameter("arg" + i, pars[i]); 
 
    } 
 
    List <T> results = query.getResultList(); 
 
    entityTransaction.commit(); 
 
    return results; 
 

 
    } 
 
}

StackTrace

org.eclipse.e4.core.di.InjectionException: javax.persistence.PersistenceException: No Persistence provider 
 
for EntityManager named RCMSecond 
 
at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java: 68) 
 
at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java: 898) 
 
at org.eclipse.e4.core.internal.di.InjectorImpl.inject(InjectorImpl.java: 121) 
 
at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java: 345) 
 
at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java: 264) 
 
at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java: 162) 
 
at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java: 104) 
 
at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java: 73) 
 
at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java: 55) 
 
at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java: 129) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java: 971) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java: 640) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java: 746) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$0(PartRenderingEngine.java: 717) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java: 711) 
 
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java: 42) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java: 695) 
 
at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.showTab(StackRenderer.java: 1306) 
 
at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer$1.handleEvent(LazyStackRenderer.java: 72) 
 
at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java: 40) 
 
at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java: 186) 
 
at org.eclipse.swt.widgets.Display.syncExec(Display.java: 4761) 
 
at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java: 211) 
 
at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java: 36) 
 
at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java: 197) 
 
at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java: 197) 
 
at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java: 1) 
 
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java: 230) 
 
at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java: 148) 
 
at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java: 135) 
 
at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java: 78) 
 
at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java: 39) 
 
at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java: 85) 
 
at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java: 59) 
 
at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java: 374) 
 
at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl.setSelectedElement(ElementContainerImpl.java: 171) 
 
at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer.postProcess(LazyStackRenderer.java: 108) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java: 658) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java: 746) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$0(PartRenderingEngine.java: 717) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java: 711) 
 
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java: 42) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java: 695) 
 
at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.processContents(SWTPartRenderer.java: 71) 
 
at org.eclipse.e4.ui.workbench.renderers.swt.SashRenderer.processContents(SashRenderer.java: 151) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java: 654) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java: 746) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$0(PartRenderingEngine.java: 717) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java: 711) 
 
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java: 42) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java: 695) 
 
at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.processContents(SWTPartRenderer.java: 71) 
 
at org.eclipse.e4.ui.workbench.renderers.swt.PerspectiveRenderer.processContents(PerspectiveRenderer.java: 49) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java: 654) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java: 746) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$0(PartRenderingEngine.java: 717) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java: 711) 
 
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java: 42) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java: 695) 
 
at org.eclipse.e4.ui.workbench.renderers.swt.PerspectiveStackRenderer.showTab(PerspectiveStackRenderer.java: 82) 
 
at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer$1.handleEvent(LazyStackRenderer.java: 72) 
 
at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java: 40) 
 
at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java: 186) 
 
at org.eclipse.swt.widgets.Display.syncExec(Display.java: 4761) 
 
at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java: 211) 
 
at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java: 36) 
 
at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java: 197) 
 
at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java: 197) 
 
at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java: 1) 
 
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java: 230) 
 
at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java: 148) 
 
at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java: 135) 
 
at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java: 78) 
 
at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java: 39) 
 
at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java: 85) 
 
at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java: 59) 
 
at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java: 374) 
 
at org.eclipse.e4.ui.model.application.ui.advanced.impl.PerspectiveStackImpl.setSelectedElement(PerspectiveStackImpl.java: 135) 
 
at org.eclipse.e4.ui.model.application.ui.advanced.impl.PerspectiveStackImpl.setSelectedElement(PerspectiveStackImpl.java: 1) 
 
at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer.postProcess(LazyStackRenderer.java: 108) 
 
at org.eclipse.e4.ui.workbench.renderers.swt.PerspectiveStackRenderer.postProcess(PerspectiveStackRenderer.java: 63) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java: 658) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java: 746) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$0(PartRenderingEngine.java: 717) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java: 711) 
 
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java: 42) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java: 695) 
 
at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.processContents(SWTPartRenderer.java: 71) 
 
at org.eclipse.e4.ui.workbench.renderers.swt.WBWRenderer.processContents(WBWRenderer.java: 614) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java: 654) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java: 746) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$0(PartRenderingEngine.java: 717) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java: 711) 
 
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java: 42) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java: 695) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java: 1057) 
 
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java: 337) 
 
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java: 1018) 
 
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java: 156) 
 
at org.eclipse.e4.ui.internal.workbench.swt.E4Application.start(E4Application.java: 159) 
 
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java: 196) 
 
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java: 134) 
 
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java: 104) 
 
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java: 380) 
 
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java: 235) 
 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
 
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
 
at java.lang.reflect.Method.invoke(Unknown Source) 
 
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java: 669) 
 
at org.eclipse.equinox.launcher.Main.basicRun(Main.java: 608) 
 
at org.eclipse.equinox.launcher.Main.run(Main.java: 1515) 
 
at org.eclipse.equinox.launcher.Main.main(Main.java: 1488) 
 
Caused by: javax.persistence.PersistenceException: No Persistence provider 
 
for EntityManager named RCMSecond 
 
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java: 61) 
 
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java: 39) 
 
at daoImpl.GenericDAOImpl. <init> (GenericDAOImpl.java: 30) 
 
at daoImpl.DatabaseDAOImpl. <init> (DatabaseDAOImpl.java: 14) 
 
at com.view.FirstView.createControls(FirstView.java: 31) 
 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
 
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
 
at java.lang.reflect.Method.invoke(Unknown Source) 
 
at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java: 56) 
 
    ...112 more

Я попытался поместить persistence.xml на эти места - /RCMSecond/src/persistence.xml и /RCMSecond/SRC/м- INF/persistence.xml все еще проект RCP бросает ту же самую ошибку stacktrace. Любая помощь будет оценена по достоинству. Спасибо заранее

Answer 1

https://docs.oracle.com/javaee/7/tutorial/persistence-intro003.htm

файл JAR или каталог которого META-INF каталог содержит persistence.xml называется корнем единицы сохранения. Область единицы персистентности определяется корнем элемента постоянной продолжительности.

Стойкие единицы могут быть упакованы как часть WAR, или файл JAR EJB или могут быть упакованы в JAR файл, который затем может быть включена в WAR или EAR-файла.

• If you package the persistent unit as a set of classes in an EJB JAR 
    file, persistence.xml should be put in the EJB JAR's META-INF directory. 

• If you package the persistence unit as a set of classes in a WAR file, 
    persistence.xml should be located in the WAR file's 
    WEB-INF/classes/META-INF directory. 

• If you package the persistence unit in a JAR file that will be 
    included in a WAR or EAR file, the JAR file should be located in either 
     - the WEB-INF/lib directory of a WAR Or 
     - the EAR file's library directory 

Проверьте конфигурацию. Ваш Eclipse должен иметь возможность сопоставлять файлы ресурсов и создавать все пакеты. проверьте Project-> Properties-> Build Path, чтобы настроить зависимости проекта.

---

Оффтопик советы: Вы пытаетесь получить EntityManager инъекцией:

@PersistenceContext 
    protected EntityManager entityManager 

Затем, чтобы получить EntityManager из EntityManagerFactory Например:

EntityManagerFactory factory = Persistence.createEntityManagerFactory("RCMSecond"); 
    this.entityManager = factory.createEntityManager();