Re: GWT with JPA

I don't do anything in my .gwt.xml for compiling my project. Are you compile with gwt-maven-plugin?

Here is my pom.xml and my .gwt-xml.

Juan

.gwt.xml:

<module rename-to='...'>

<!-- Inherit the core Web Toolkit stuff. -->

<inherits name='com.google.gwt.user.User' />

<!-- Inherit the default GWT style sheet. You can change -->

<!-- the theme of your GWT application by uncommenting -->

<!-- any one of the following lines. -->

<inherits name='com.google.gwt.user.theme.standard.Standard' />

<!-- <inherits name='com.google.gwt.user.theme.chrome.Chrome'/> -->

<!-- <inherits name='com.google.gwt.user.theme.dark.Dark'/> -->

<!-- Other module inherits -->

<inherits name="com.google.gwt.activity.Activity" />

<inherits name="com.google.gwt.place.Place" />

<!-- Specify the app entry point class. -->

<entry-point class='...' />

<!-- Specify the paths for translatable code -->

<source path='client' />

<source path='shared' />

</module>

pom.xml:

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">

<!-- POM file generated with GWT webAppCreator -->

<modelVersion>4.0.0</modelVersion>

<groupId></groupId>

<artifactId></artifactId>

<packaging>war</packaging>

<version></version>

<properties>

<!-- Convenience property to set the GWT version -->

<gwtVersion>2.1.1</gwtVersion>

<hibernate.version>3.6.1.Final</hibernate.version>

<!-- GWT needs at least java 1.5 -->

<maven.compiler.source>1.6</maven.compiler.source>

<maven.compiler.target>1.6</maven.compiler.target>

<webappDirectory>${project.build.directory}/${project.build.finalName}</webappDirectory>

<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

</properties>

<dependencies>

<dependency>

<groupId>com.google.gwt</groupId>

<artifactId>gwt-servlet</artifactId>

<version>${gwtVersion}</version>

<scope>runtime</scope>

</dependency>

<dependency>

<groupId>com.google.gwt</groupId>

<artifactId>gwt-user</artifactId>

<version>${gwtVersion}</version>

<scope>provided</scope>

</dependency>

<!-- Persistencia -->

<dependency>

<groupId>org.hibernate.javax.persistence</groupId>

<artifactId>hibernate-jpa-2.0-api</artifactId>

<version>1.0.0.Final</version>

</dependency>

<dependency>

<groupId>org.hibernate</groupId>

<artifactId>hibernate-core</artifactId>

<version>${hibernate.version}</version>

<exclusions>

<exclusion>

<groupId>cglib</groupId>

<artifactId>cglib</artifactId>

</exclusion>

<exclusion>

<groupId>net.sf.ehcache</groupId>

<artifactId>ehcache</artifactId>

</exclusion>

<exclusion>

<groupId>asm</groupId>

<artifactId>asm</artifactId>

</exclusion>

<exclusion>

<groupId>asm</groupId>

<artifactId>asm-attrs</artifactId>

</exclusion>

<exclusion>

<groupId>javax.transaction</groupId>

<artifactId>jta</artifactId>

</exclusion>

</exclusions>

</dependency>

<dependency>

<groupId>org.hibernate</groupId>

<artifactId>hibernate-entitymanager</artifactId>

<version>${hibernate.version}</version>

<exclusions>

<exclusion>

<groupId>cglib</groupId>

<artifactId>cglib</artifactId>

</exclusion>

<exclusion>

<groupId>dom4j</groupId>

<artifactId>dom4j</artifactId>

</exclusion>

</exclusions>

</dependency>

<dependency>

<groupId>javax.transaction</groupId>

<artifactId>jta</artifactId>

<version>1.1</version>

</dependency>

<!-- Test -->

<dependency>

<groupId>junit</groupId>

<artifactId>junit</artifactId>

<version>4.8.2</version>

<scope>test</scope>

</dependency>

</dependencies>

<build>

<!-- Generate compiled stuff in the folder used for developing mode -->

<outputDirectory>${webappDirectory}/WEB-INF/classes</outputDirectory>

<plugins>

<plugin>

<groupId>org.apache.maven.plugins</groupId>

<artifactId>maven-compiler-plugin</artifactId>

<version>2.3.2</version>

<configuration>

<source>1.6</source>

<target>1.6</target>

</configuration>

</plugin>

<!-- GWT Maven Plugin -->

<plugin>

<groupId>org.codehaus.mojo</groupId>

<artifactId>gwt-maven-plugin</artifactId>

<version>2.1.0-1</version>

<executions>

<execution>

<goals>

<goal>compile</goal>

<goal>test</goal>

<goal>i18n</goal>

<!-- goal>generateAsync</goal -->

</goals>

</execution>

</executions>

<!-- Plugin configuration. There are many available options, see gwt-maven-plugin 

documentation at codehaus.org -->

<configuration>

<runTarget>embalajemadera.html</runTarget>

<hostedWebapp>${webappDirectory}</hostedWebapp>

<i18nMessagesBundle>${project.groupId}.client.Messages</i18nMessagesBundle>

<!-- Genera las interfaces Async -->

<!-- servicePattern>com/foo/client/services/*.java</servicePattern -->

</configuration>

</plugin>

<!-- Copy static web files before executing gwt:run -->

<plugin>

<groupId>org.apache.maven.plugins</groupId>

<artifactId>maven-war-plugin</artifactId>

<version>2.1.1</version>

<executions>

<execution>

<phase>compile</phase>

<goals>

<goal>exploded</goal>

</goals>

</execution>

</executions>

<configuration>

<webappDirectory>${webappDirectory}</webappDirectory>

</configuration>

</plugin>

<!-- IDE -->

<plugin>

<groupId>org.apache.maven.plugins</groupId>

<artifactId>maven-eclipse-plugin</artifactId>

<version>2.7</version>  <!-- Note 2.8 does not work with AspectJ aspect path -->

<configuration>

<downloadSources>true</downloadSources>

<downloadJavadocs>false</downloadJavadocs>

<wtpversion>2.0</wtpversion>

<additionalBuildcommands>

<buildCommand>

<name>org.eclipse.jdt.core.javabuilder</name>

<arguments>

</arguments>

</buildCommand>

<buildCommand>

<name>com.google.gdt.eclipse.core.webAppProjectValidator</name>

<arguments>

</arguments>

</buildCommand>

<buildCommand>

<name>com.google.gwt.eclipse.core.gwtProjectValidator</name>

<arguments>

</arguments>

</buildCommand>

</additionalBuildcommands>

<additionalProjectnatures>

<projectnature>com.google.gwt.eclipse.core.gwtNature</projectnature>

</additionalProjectnatures>

</configuration>

</plugin>

</plugins>

</build>

<repositories>

<repository>

<snapshots>

<enabled>false</enabled>

</snapshots>

<id>central (jboss)</id>

<name>Maven Repository Switchboard</name>

<url>http://repo2.maven.org/maven2</url>

</repository>

<repository>

<snapshots>

<enabled>false</enabled>

</snapshots>

<id>Public Repository Group (jboss)</id>

<url>http://repository.jboss.org/nexus/content/groups/public</url>

</repository>

</repositories>

</project>

2011/2/28 FritzTheCat <wg27_2000@hotmail.com>

Thanks Juan for your quick reply, I think I did not explain my problem
enough detailled so I try it again: My project compiles right so I
don't think it is a class-path problem in the common way: Refering to
http://code.google.com/intl/de-DE/webtoolkit/doc/latest/DevGuideServerCommunication.html#DevGuideSerializableTypes
I have to assure the following:
 # The class is annotated with a JPA javax.persistence.Entity
annotation. -> I did this in my Entity object

for example:
@Entity
public class Member implements Serializable{

       private static final long serialVersionUID = -8354006649751924339L;

       public Long id;
}

# The fully-qualified class name is listed as one of the values of the
rpc.enhancedClasses configuration property in a .gwt.xml module file
that is part of the application. -> I think this is my problem. I
don't know how to put the class into my .gwt.xml file and I cannot
find any description how to do this, I only found some comments, that
the annotation can not be read by the client gwt code (which is clear
to me), but how can I put them into the gwt.xml file?

Thanks for your help

On 28 Feb., 16:18, Juan Pablo Gardella <gardellajuanpa...@gmail.com>
wrote:
> I think you need the jpa sources in your classpath.
>
> Juan
>
> 2011/2/28 FritzTheCat <wg27_2...@hotmail.com>
>
> > Hi people,
>
> > i try to use gwt 2.2 with JPA. For this I use the @Entity annotation
> > in my shared folder and i get the error message:
> > The import javax.persistence cannot be resolved, Entity cannot be
> > resolved to a type. For me it is clear that something is missing in
> > the .gwt.xml file and I found the rpc enhanced feature but I don't
> > know how to include those classes. I used the following "<define-
> > configuration-property name="rpc.enhancedClasses" is-multi-
> > valued="true"/>" in my .gwt.xml file but I also have to define my
> > @Entity annotated classes. So how must the be defined in the .gwt.xml
> > file? Any help is appreciated,
>
> > thank you and nice greetings
>
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