Errors forge generated CRUD when add a child (user), to a parent (role)

[cristian.pavalasc]

Errors forge generated CRUD when add a child (user), to a parent (role):

  1. SEVERE [javax.enterprise.resource.webcontainer.jsf.application] (default task-16) Error Rendering View[/role/create.xhtml]: java.lang.NullPointerException

  2. Caused by: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0

Steps:

Environment/Configuration:

  JBoss Developper Tool Red Hat JBoss Developer Studio / Version: 10.0.0.GA

  Server: JBoss 10.0.0 WildFly

  Forge version: 3.2.2 Final embeded

  CDI 1.2

  JSF 2.2

Two table, related one to many:

CREATE TABLE role (

  role_id bigint(20) NOT NULL AUTO_INCREMENT,

  name varchar(255) DEFAULT NULL,

  description varchar(255) DEFAULT NULL,

  createdOn TIMESTAMP DEFAULT NOW(),

  createdBy varchar(255) DEFAULT NULL,

  lastUpdatedOn datetime DEFAULT NULL,

  lastUpdatedBy varchar(255) DEFAULT NULL,

  UNIQUE (name),

  PRIMARY KEY (role_id),

  UNIQUE KEY role_id (role_id)

) ENGINE=Innodb AUTO_INCREMENT=1 DEFAULT CHARSET=utf8 COLLATE utf8_general_ci;

CREATE TABLE user (

  user_id bigint(20) NOT NULL AUTO_INCREMENT,

  users_role_id bigint(20) NOT NULL ,

  fullname varchar(255) DEFAULT NULL,

  password varchar(255) DEFAULT NULL,

  email varchar(255) DEFAULT NULL,

  username varchar(255) DEFAULT NULL,

  createdOn TIMESTAMP DEFAULT NOW(),

  createdBy varchar(255) DEFAULT NULL,

  expireOn datetime DEFAULT NULL,

  lastUpdatedOn datetime DEFAULT NULL,

  lastUpdatedBy varchar(255) DEFAULT NULL,

  lastAccesOn datetime DEFAULT NULL,

  active bit(1) NOT NULL DEFAULT b'1',

  UNIQUE (username),

  PRIMARY KEY (user_id),

  UNIQUE KEY user_id (user_id),

  CONSTRAINT users_role_fk2 FOREIGN KEY (users_role_id) REFERENCES role (role_id)

) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8 COLLATE utf8_general_ci;

The next forge commands were executed:

1. project-new --top-level-package ro.procont.usersrole --named usersRole --stack JAVA_EE_7 --type war

2. jpa-setup --data-source-name usersRole --db-type MYSQL

3. jpa-generate-entities-from-tables --jdbc-url jdbc:mysql://localhost/user_role --user-name root --user-password password --driver-location /Volumes/datas/Applications/dev/jbossdevstudio10.0.0/runtimes/wildfly-10.0.0.Final/modules/system/layers/base/com/mysql/main/mysql-connector-java-5.1.33-bin.jar --hibernate-dialect org.hibernate.dialect.MySQL5InnoDBDialect --driver-class com.mysql.jdbc.Driver --database-tables *;

4. scaffold-generate --targets ro.procont.usersrole.model.* --web-root / --provider Faces;

Full stack below:

12:19:54,483 SEVERE [javax.enterprise.resource.webcontainer.jsf.application] (default task-16) Error Rendering View[/role/create.xhtml]: java.lang.NullPointerException

  at java.net.URLEncoder.encode(URLEncoder.java:204)

  at com.sun.faces.context.UrlBuilder.addValuesToParameter(UrlBuilder.java:318)

  at com.sun.faces.context.UrlBuilder.addParameters(UrlBuilder.java:127)

  at com.sun.faces.context.ExternalContextImpl.encodeBookmarkableURL(ExternalContextImpl.java:1059)

  at com.sun.faces.application.view.MultiViewHandler.getBookmarkableURL(MultiViewHandler.java:408)

  at javax.faces.application.ViewHandlerWrapper.getBookmarkableURL(ViewHandlerWrapper.java:272)

  at org.jboss.weld.jsf.ConversationAwareViewHandler.getBookmarkableURL(ConversationAwareViewHandler.java:132)

  at javax.faces.application.ViewHandlerWrapper.getBookmarkableURL(ViewHandlerWrapper.java:272)

  at com.sun.faces.renderkit.html_basic.OutcomeTargetRenderer.getEncodedTargetURL(OutcomeTargetRenderer.java:194)

  at com.sun.faces.renderkit.html_basic.OutcomeTargetLinkRenderer.renderAsActive(OutcomeTargetLinkRenderer.java:158)

  at com.sun.faces.renderkit.html_basic.OutcomeTargetLinkRenderer.encodeBegin(OutcomeTargetLinkRenderer.java:96)

  at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:865)

  at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:302)

  at com.sun.faces.renderkit.html_basic.TableRenderer.renderRow(TableRenderer.java:385)

  at com.sun.faces.renderkit.html_basic.TableRenderer.encodeChildren(TableRenderer.java:161)

  at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:890)

  at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:304)

  at com.sun.faces.renderkit.html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:114)

  at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:890)

  at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:304)

  at com.sun.faces.renderkit.html_basic.GridRenderer.renderRow(GridRenderer.java:185)

  at com.sun.faces.renderkit.html_basic.GridRenderer.encodeChildren(GridRenderer.java:129)

  at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:890)

  at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856)

  at javax.faces.render.Renderer.encodeChildren(Renderer.java:176)

  at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:890)

  at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856)

  at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)

  at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)

  at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:458)

  at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:134)

  at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)

  at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)

  at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)

  at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)

  at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)

  at javax.faces.webapp.FacesServlet.service(FacesServlet.java:659)

  at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)

  at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)

  at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)

  at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)

  at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

  at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)

  at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)

  at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

  at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)

  at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)

  at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)

  at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)

  at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)

  at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)

  at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

  at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)

  at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

  at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

  at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:284)

  at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:263)

  at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)

  at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:174)

  at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)

  at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:793)

  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

  at java.lang.Thread.run(Thread.java:745)

12:19:54,496 ERROR [io.undertow.request] (default task-16) UT005023: Exception handling request to /usersRole/faces/role/create.xhtml: javax.servlet.ServletException

  at javax.faces.webapp.FacesServlet.service(FacesServlet.java:671)

  at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)

  at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)

  at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)

  at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)

  at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

  at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)

  at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)

  at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

  at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)

  at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)

  at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)

  at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)

  at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)

  at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)

  at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

  at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)

  at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

  at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

  at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:284)

  at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:263)

  at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)

  at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:174)

  at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)

  at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:793)

  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

  at java.lang.Thread.run(Thread.java:745)

Caused by: java.lang.NullPointerException

  at java.net.URLEncoder.encode(URLEncoder.java:204)

  at com.sun.faces.context.UrlBuilder.addValuesToParameter(UrlBuilder.java:318)

  at com.sun.faces.context.UrlBuilder.addParameters(UrlBuilder.java:127)

  at com.sun.faces.context.ExternalContextImpl.encodeBookmarkableURL(ExternalContextImpl.java:1059)

  at com.sun.faces.application.view.MultiViewHandler.getBookmarkableURL(MultiViewHandler.java:408)

  at javax.faces.application.ViewHandlerWrapper.getBookmarkableURL(ViewHandlerWrapper.java:272)

  at org.jboss.weld.jsf.ConversationAwareViewHandler.getBookmarkableURL(ConversationAwareViewHandler.java:132)

  at javax.faces.application.ViewHandlerWrapper.getBookmarkableURL(ViewHandlerWrapper.java:272)

  at com.sun.faces.renderkit.html_basic.OutcomeTargetRenderer.getEncodedTargetURL(OutcomeTargetRenderer.java:194)

  at com.sun.faces.renderkit.html_basic.OutcomeTargetLinkRenderer.renderAsActive(OutcomeTargetLinkRenderer.java:158)

  at com.sun.faces.renderkit.html_basic.OutcomeTargetLinkRenderer.encodeBegin(OutcomeTargetLinkRenderer.java:96)

  at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:865)

  at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:302)

  at com.sun.faces.renderkit.html_basic.TableRenderer.renderRow(TableRenderer.java:385)

  at com.sun.faces.renderkit.html_basic.TableRenderer.encodeChildren(TableRenderer.java:161)

  at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:890)

  at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:304)

  at com.sun.faces.renderkit.html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:114)

  at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:890)

  at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:304)

  at com.sun.faces.renderkit.html_basic.GridRenderer.renderRow(GridRenderer.java:185)

  at com.sun.faces.renderkit.html_basic.GridRenderer.encodeChildren(GridRenderer.java:129)

  at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:890)

  at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856)

  at javax.faces.render.Renderer.encodeChildren(Renderer.java:176)

  at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:890)

  at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856)

  at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)

  at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)

  at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:458)

  at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:134)

  at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)

  at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)

  at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)

  at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)

  at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)

  at javax.faces.webapp.FacesServlet.service(FacesServlet.java:659)

  ... 27 more

12:19:54,511 ERROR [io.undertow.request] (default task-16) UT005022: Exception generating error page /faces/error.xhtml: javax.servlet.ServletException: Index: 0, Size: 0

  at javax.faces.webapp.FacesServlet.service(FacesServlet.java:671)

  at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)

  at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)

  at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)

  at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

  at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

  at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

  at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:265)

  at io.undertow.servlet.handlers.ServletInitialHandler.dispatchToPath(ServletInitialHandler.java:200)

  at io.undertow.servlet.spec.RequestDispatcherImpl.error(RequestDispatcherImpl.java:453)

  at io.undertow.servlet.spec.RequestDispatcherImpl.error(RequestDispatcherImpl.java:386)

  at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:311)

  at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:263)

  at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)

  at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:174)

  at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)

  at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:793)

  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

  at java.lang.Thread.run(Thread.java:745)

Caused by: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0

  at java.util.ArrayList.rangeCheck(ArrayList.java:653)

  at java.util.ArrayList.get(ArrayList.java:429)

  at javax.faces.component.AttachedObjectListHolder.restoreState(AttachedObjectListHolder.java:166)

  at javax.faces.component.UIComponentBase.restoreState(UIComponentBase.java:1612)

  at com.sun.faces.application.view.FaceletPartialStateManagementStrategy$2.visit(FaceletPartialStateManagementStrategy.java:379)

  at com.sun.faces.component.visit.FullVisitContext.invokeVisitCallback(FullVisitContext.java:151)

  at javax.faces.component.UIComponent.visitTree(UIComponent.java:1689)

  at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700)

  at com.sun.faces.application.view.FaceletPartialStateManagementStrategy.restoreView(FaceletPartialStateManagementStrategy.java:366)

  at com.sun.faces.application.StateManagerImpl.restoreView(StateManagerImpl.java:138)

  at com.sun.faces.application.view.ViewHandlingStrategy.restoreView(ViewHandlingStrategy.java:123)

  at com.sun.faces.application.view.FaceletViewHandlingStrategy.restoreView(FaceletViewHandlingStrategy.java:591)

  at com.sun.faces.application.view.MultiViewHandler.restoreView(MultiViewHandler.java:151)

  at javax.faces.application.ViewHandlerWrapper.restoreView(ViewHandlerWrapper.java:353)

  at javax.faces.application.ViewHandlerWrapper.restoreView(ViewHandlerWrapper.java:353)

  at com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:199)

  at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)

  at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:123)

  at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)

  at javax.faces.webapp.FacesServlet.service(FacesServlet.java:658)

  ... 19 more

The errors occured when I tried to add new user to an existing role.

I guess id of the new created user is null (and is normal to be null) and is used in the page (jsf) but no other ideas.

Any clues?

Thanks,

Cristian.

[gastaldi]

Hi Cristian,

Does this occur in the latest Red Hat Developer Studio version too? If so, I'd suggest you to file a bug issue in the issue tracker: - JBoss Issue Tracker

Best Regards,

George Gastaldi

[cristian.pavalasc]

Dear George,

First of all thank you for your quick response, time and patience.

I used Forge generator 1.x in the past (BTW, great tool, it is what JavaEE

was/is missing for a long time, a solid, reliable and flixible tool to

generate basic skeletons code, I'm still missing Seam generator). For a

while a had to leave Forge, but these days I came back and I tried to

generate a small CRUD app for two related tables.

It's not the latest version of JBDT, the working version is from 2016:

Red Hat JBoss Developer Studio

Version: 10.0.0.GA

Build id: GA-v20160615-1853-B33

Build date: 20160615-1853

Thanks again for your great work.

My very best regards,

[cristian.pavalasc]

Dear George,

After deleting each <f:param name="id" value="#{_item.userId}"/> from each

h:link (wich is the null value) the generated code works. Is this a bug?

Kind regards,

On 6 October 2017 at 21:01, Cristian Pavalasc <[e-mail]>

[gastaldi]

Hi Cristian,

It looks like the class represented by _item is not instantiated in this case. Mind adding that observation to the open issue?