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org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set	at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:100)	at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:54)	at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:137)	at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35)	at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:88)	at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:254)	at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:228)	at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:207)	at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:51)	at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:94)	at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237)	at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:207)	at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.handleTypes(MetadataBuildingProcess.java:352)	at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:111)	at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.build(MetadataBuildingProcess.java:83)	at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:418)	at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:87)	at org.hibernate.boot.MetadataSources.buildMetadata(MetadataSources.java:183)	at org.hibernate.tool.util.MetadataHelper.buildFromMetadataSources(MetadataHelper.java:49)	at org.hibernate.tool.util.MetadataHelper.getMetadata(MetadataHelper.java:21)	at org.jboss.tools.hibernate.runtime.v_5_2.internal.ConfigurationFacadeImpl.getMetadata(ConfigurationFacadeImpl.java:168)	at org.jboss.tools.hibernate.runtime.v_5_2.internal.ConfigurationFacadeImpl.buildMappings(ConfigurationFacadeImpl.java:106)	at org.jboss.tools.hibernate.runtime.v_5_2.internal.ConfigurationFacadeImpl.createMappings(ConfigurationFacadeImpl.java:100)	at org.hibernate.eclipse.jdt.ui.wizards.ConfigurationActor.createConfiguration(ConfigurationActor.java:171)	at org.hibernate.eclipse.jdt.ui.wizards.ConfigurationActor.createConfigurations(ConfigurationActor.java:120)	at org.hibernate.eclipse.jdt.ui.wizards.NewHibernateMappingFileWizard.createConfigurations(NewHibernateMappingFileWizard.java:559)	at org.hibernate.eclipse.jdt.ui.wizards.NewHibernateMappingFileWizard.getPlaces2Gen(NewHibernateMappingFileWizard.java:316)	at org.hibernate.eclipse.jdt.ui.wizards.NewHibernateMappingFileWizard.handlePageChanging(NewHibernateMappingFileWizard.java:172)	at org.eclipse.jface.wizard.WizardDialog$7.run(WizardDialog.java:1540)	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)	at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)	at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173)	at org.eclipse.jface.wizard.WizardDialog.firePageChanging(WizardDialog.java:1537)	at org.eclipse.jface.wizard.WizardDialog.doPageChanging(WizardDialog.java:890)	at org.eclipse.jface.wizard.WizardDialog.showPage(WizardDialog.java:1177)	at org.eclipse.jface.wizard.WizardDialog.nextPressed(WizardDialog.java:876)	at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:419)	at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:618)	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:249)	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5219)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1340)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4553)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4143)	at org.eclipse.jface.window.Window.runEventLoop(Window.java:818)	at org.eclipse.jface.window.Window.open(Window.java:794)	at org.eclipse.ui.internal.handlers.WizardHandler$New.executeHandler(WizardHandler.java:269)	at org.eclipse.ui.internal.handlers.WizardHandler.execute(WizardHandler.java:290)	at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:295)	at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:90)	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:498)	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:54)	at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:282)	at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:264)	at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132)	at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:152)	at org.eclipse.core.commands.Command.executeWithChecks(Command.java:494)	at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:488)	at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:210)	at org.eclipse.ui.internal.handlers.LegacyHandlerService.executeCommand(LegacyHandlerService.java:353)	at org.eclipse.ui.internal.actions.CommandAction.runWithEvent(CommandAction.java:155)	at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:565)	at org.eclipse.jface.action.ActionContributionItem.lambda$4(ActionContributionItem.java:397)	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5219)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1340)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4553)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4143)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022)	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150)	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:687)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:604)	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138)	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:388)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)	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:498)	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673)	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610)	at org.eclipse.equinox.launcher.Main.run(Main.java:1519)	at org.eclipse.equinox.launcher.Main.main(Main.java:1492)