Hi
I want to save all the versions of entities as serialized objects in the database, so to provide users with history of the full entity (I know Cuba has audit, but it is for administrators and you can see only the modified fields.
so I have an entity which stores serialized entities
public class DocumentRevision extends StandardEntity {
private static final long serialVersionUID = 421722419472421448L;
@Column(name = "ID_DOCUMENT", nullable = false)
protected UUID idDocument;
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "DATA_", nullable = false)
protected Date data;
@Column(name = "BLOB_")
protected byte[] blob;
public void setData(Date data) {
this.data = data;
}
public Date getData() {
return data;
}
public void setBlob(byte[] blob) {
this.blob = blob;
}
public byte[] getBlob() {
return blob;
}
public void setIdDocument(UUID idDocument) {
this.idDocument = idDocument;
}
public UUID getIdDocument() {
return idDocument;
}
}
than, in Oferta Entity, I have
@Override
public void onBeforeDetach(Oferta entity, EntityManager entityManager) {
byte[] data = SerializationUtils.serialize(entity);
entity.setRevision(data);
}
and
@Override
public void onAfterUpdate(Oferta entity, Connection connection) {
try (Transaction tx = persistence.createTransaction()) {
log.error("Entity after update!");
DocumentRevision docRev = metadata.create(DocumentRevision.class);
docRev.setBlob(entity.getRevision());
docRev.setIdDocument(entity.getId());
docRev.setData(entity.getCreateTs());
persistence.getEntityManager().persist(docRev);
tx.commit();
}
}
which successfully adds data to the database
when I edit Oferta Entity I want to read revision and I use
protected void testRevision(Oferta oferta){
LoadContext loadContext = LoadContext.create(DocumentRevision.class)
.setQuery(LoadContext.createQuery("Select d from spica$DocumentRevision d where d.idDocument = :id")
.setParameter("id",oferta.getId()))
.setView(View.LOCAL);
List<DocumentRevision> revisions = dataManager.loadList(loadContext);
showNotification(" " + revisions.size());
for (DocumentRevision revizie : revisions) {
if (revizie.getBlob() != null) {
Object obiect = SerializationUtils.deserialize(revizie.getBlob());
Oferta ofertaVeche = (Oferta) obiect; <---- THIS LINE GIVES THE ERROR
showNotification(" am deserializat " + ofertaVeche.getValuta());
}
}
}
and i get the error
ClassNotFoundException: com.company.spica.entity.Oferta
but com.company.spica.entity.Oferta Is actually the class of the entity and i have
import com.company.spica.entity.*;
inside the testing file …
this is the fullstack error
java.lang.ClassNotFoundException: com.company.spica.entity.Oferta
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:626)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1613)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1518)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1774)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
at org.apache.commons.lang.SerializationUtils.deserialize(SerializationUtils.java:163)
at org.apache.commons.lang.SerializationUtils.deserialize(SerializationUtils.java:193)
at com.company.spica.web.oferta.OfertaEdit.testRevision(OfertaEdit.java:136)
at com.company.spica.web.oferta.OfertaEdit.postInit(OfertaEdit.java:105)
at com.haulmont.cuba.gui.components.AbstractEditor.setItem(AbstractEditor.java:70)
at com.haulmont.cuba.gui.WindowManager.openEditor(WindowManager.java:721)
at com.haulmont.cuba.web.WebWindowManager.openEditor(WebWindowManager.java:157)
at com.haulmont.cuba.gui.components.WindowDelegate.openEditor(WindowDelegate.java:250)
at com.haulmont.cuba.web.gui.WebWindow.openEditor(WebWindow.java:444)
at com.haulmont.cuba.gui.components.actions.EditAction.internalOpenEditor(EditAction.java:232)
at com.haulmont.cuba.gui.components.actions.EditAction.actionPerform(EditAction.java:225)
at com.haulmont.cuba.web.gui.components.WebAbstractTable.handleClickAction(WebAbstractTable.java:779)
at com.haulmont.cuba.web.gui.components.WebAbstractTable.lambda$initComponent$4fd149ee$1(WebAbstractTable.java:663)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:200)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:163)
at com.vaadin.server.AbstractClientConnector.fireEvent(AbstractClientConnector.java:1037)
at com.vaadin.ui.Table.handleClickEvent(Table.java:3221)
at com.vaadin.ui.Table.changeVariables(Table.java:2998)
at com.haulmont.cuba.web.toolkit.ui.CubaTable.changeVariables(CubaTable.java:252)
at com.haulmont.cuba.web.toolkit.ui.CubaGroupTable.changeVariables(CubaGroupTable.java:144)
at com.vaadin.server.communication.ServerRpcHandler.changeVariables(ServerRpcHandler.java:634)
at com.vaadin.server.communication.ServerRpcHandler.handleInvocation(ServerRpcHandler.java:468)
at com.vaadin.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:418)
at com.vaadin.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:274)
at com.vaadin.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:90)
at com.haulmont.cuba.web.sys.CubaVaadinServletService$CubaUidlRequestHandler.lambda$synchronizedHandleRequest$0(CubaVaadinServletService.java:314)
at com.haulmont.cuba.web.sys.CubaVaadinServletService.withUserSession(CubaVaadinServletService.java:196)
at com.haulmont.cuba.web.sys.CubaVaadinServletService$CubaUidlRequestHandler.synchronizedHandleRequest(CubaVaadinServletService.java:314)
at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41)
at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1422)
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:384)
at com.haulmont.cuba.web.sys.CubaApplicationServlet.serviceAppRequest(CubaApplicationServlet.java:276)
at com.haulmont.cuba.web.sys.CubaApplicationServlet.service(CubaApplicationServlet.java:185)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at com.haulmont.cuba.web.sys.CubaHttpFilter.handleNotFiltered(CubaHttpFilter.java:108)
at com.haulmont.cuba.web.sys.CubaHttpFilter.doFilter(CubaHttpFilter.java:95)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:789)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1437)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Thank you
