Vaadin Migration from 7 to 8

Recently we have migrated from Vaadin 7 to 8.5.2 in compatibility mode and facing performence issue. During Heap Dump analysis

com.vaadin.cdi.internal.UIScopedContext @ 0xfffffffbef232d60 is not released the memory to 21 GB with concurrent hashmap.

Request to suggest
17633840.png

Have you updated the Spring add-on version to the one supported by Vaadin 8?

<dependency>
   <groupId>com.vaadin</groupId>
   <artifactId>vaadin-cdi</artifactId>
   <version>3.0.1</version>
</dependency>

Hi,

We have added the below, whether we need to change kindly confirm.


<dependency>
			<groupId>com.vaadin</groupId>
			<artifactId>vaadin-cdi</artifactId>
			<version>2.0.0</version>
				</dependency>

Have you tried updating that to 3.0.1?

Will try and update.

My recollection is that 2.0.0 was infested by memory leakage problem. That has been fixed in 3.0.1 and also the fix has been backported in CDI add-on 1.0.5 for Vaadin 7.

Hi,
After the changes am getting the below exception:

Caused by: org.jboss.weld.exceptions.DefinitionException: Exception List with 1 exceptions:
Exception 0 :
[CDIUI_WITHOUT_UI]
 Inconsistent deployment: The non-abstract class com.shaic.***
with @CDIUI should extend com.vaadin.ui.UI
	at com.vaadin.cdi.internal.VaadinExtension.throwInconsistentDeployment(VaadinExtension.java:93)

Error seems to say you have the @CDIUI annotation on a class that does not extend UI. Is this the case?

Yes,import com.vaadin.cdi.CDIUI;

No, I mean, which class do you have the @CDIUI annotation on? You should have something like this:

@CDIUI("myui")
public class MyUI extends UI {
    ...
@CDIUI
public abstract class GBaseTable<T> extends ViewComponent {
	
	}

Ok, then that is your problem. Like the error message says, the @CDIUI annotation should only be placed on a class that extends UI. You have the @CDIUI annotation on a class that extends ViewComponent, which I assume is not a UI.

Hi,

Now we are facing the below exception,

SEVERE [com.vaadin.server.DefaultErrorHandler]
(default task-8) : java.lang.NullPointerException
at com.vaadin.cdi.internal.AnnotationUtil.getUiBeans(AnnotationUtil.java:80)
at com.vaadin.cdi.CDIUIProvider.getUIBeanWithMapping(CDIUIProvider.java:176)
at com.vaadin.cdi.CDIUIProvider.getUIClass(CDIUIProvider.java:118)

Kindly suggest.

So what does your @CDIUI-annotated class look like now?

We are now using @CDIUI anotation only for classes that extends UI

Dineshkumar Mohan:
Hi,

Now we are facing the below exception,

SEVERE [com.vaadin.server.DefaultErrorHandler]
(default task-8) : java.lang.NullPointerException
at com.vaadin.cdi.internal.AnnotationUtil.getUiBeans(AnnotationUtil.java:80)
at com.vaadin.cdi.CDIUIProvider.getUIBeanWithMapping(CDIUIProvider.java:176)
at com.vaadin.cdi.CDIUIProvider.getUIClass(CDIUIProvider.java:118)

Kindly suggest.

Kindly update.

There has been some API and usage changes between 2.0 and 3.0 versions of the CDI add-on.

I have one demo app which covers most of the cases how to use 3.0 with Vaadin 8 https://github.com/TatuLund/cdi-demo

Hi,

Thanks,We will check and update.

Hi,

The below exception message
com.vaadin.cdi.internal.AnnotationUtil.getUiBeans(AnnotationUtil.java:80) at

shows me that BeanManager is null, when i debug. Is there any way to make sure
BeanManager is available and instantiated???

Any Idea on this

From AnnotationUtil.java

public static Set<Bean<?>> getUiBeans(BeanManager beanManager) {
       // The annotation @CDIUI can have a value, so using it as the type
       // parameter of AnnotationLiteral is somewhat problematic.
       Set<Bean<?>> uiBeans = beanManager.getBeans(UI.class,
               new AnnotationLiteral<Any>() {
               });
       return uiBeans;
   }

any update on the issue?
Below is my pom file

	
      <!-- <finalName>${project.artifactId}</finalName> -->
 
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<vaadin.version>8.5.2</vaadin.version>
		<vaadin.plugin.version>${vaadin.version}</vaadin.plugin.version>
		<maven.compiler.source>1.8</maven.compiler.source>
		<maven.compiler.target>1.8</maven.compiler.target>
		<vaadin.widgetset.mode>local</vaadin.widgetset.mode>
		<!-- <org.mapstruct.version>1.0.0.Beta2</org.mapstruct.version> -->

	</properties>
	<repositories>
		<repository>
			<id>public</id>
			<url>http://maven.nuxeo.org/nexus/content/repositories/public/</url>
		</repository>
		<repository>
			<id>codelds</id>
			<url>https://code.lds.org/nexus/content/groups/main-repo</url>
		</repository>
		<repository>
			<id>vaadin-addons</id>
			<url>http://maven.vaadin.com/vaadin-addons</url>
		</repository>
		<repository>
			<id>vaadin-snapshots</id>
			<url>http://oss.sonatype.org/content/repositories/vaadin-snapshots/</url>
			<releases>
				<enabled>true</enabled>
			</releases>
			<snapshots>
				<enabled>true</enabled>
			</snapshots>
		</repository>
		<repository>
			<id>local-repository</id>
			<url>file:${project.basedir}/lib</url>
			<releases>
				<enabled>true</enabled>
			</releases>
			<snapshots>
				<enabled>true</enabled>
			</snapshots>
		</repository>
		<repository>
			<id>jitpack.io</id>
			<url>https://jitpack.io</url>
		</repository>
	</repositories>
	<pluginRepositories>
		<pluginRepository>
			<id>vaadin-snapshots</id>
			<url>http://oss.sonatype.org/content/repositories/vaadin-snapshots/</url>
			<releases>
				<enabled>false</enabled>
			</releases>
			<snapshots>
				<enabled>true</enabled>
			</snapshots>
		</pluginRepository>
	</pluginRepositories>
	<dependencies>
<!-- 		<dependency>
			<groupId>com.zybnet</groupId>
			<artifactId>vaadin-autocomplete</artifactId>
			<version>1.1.1</version>
		</dependency> -->   
		<!-- J2EE Add-Ons -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>3.0.1</version>
			<scope>provided</scope>
		</dependency>
	<!--  	<dependency>
			<groupId>de.steinwedel.vaadin.addon</groupId>
			<artifactId>messagebox</artifactId>
			<version>2.0.7</version>
		</dependency>   -->
		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-mapper-asl</artifactId>
			<version>1.9.13</version>
		</dependency>
		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-jaxrs</artifactId>
			<version>1.9.13</version>
		</dependency>
		<dependency>
			<groupId>com.sun.jersey</groupId>
			<artifactId>jersey-client</artifactId>
			<version>1.9.1</version>
		</dependency>
		<dependency>
			<groupId>com.sun.jersey.contribs</groupId>
			<artifactId>jersey-multipart</artifactId>
			<version>1.9.1</version>
		</dependency>
		<dependency>
			<groupId>javax</groupId>
			<artifactId>javaee-api</artifactId>
			<version>7.0</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-lang3</artifactId>
			<version>3.0.1</version>
		</dependency>



		<dependency>
			<groupId>com.vaadin</groupId>
			<artifactId>vaadin-compatibility-server</artifactId>
			<version>${vaadin.version}</version>
		</dependency>
		<dependency>
			<groupId>com.vaadin</groupId>
			<artifactId>vaadin-compatibility-client-compiled</artifactId>
			<version>${vaadin.version}</version>
		</dependency>
		<!-- Needed when using the widgetset optimizer (custom ConnectorBundleLoaderFactory). 
			For widgetset compilation, vaadin-client-compiler is automatically added 
			on the compilation classpath by vaadin-maven-plugin so normally there is 
			no need for an explicit dependency. -->
		<dependency>
			<groupId>com.vaadin</groupId>
			<artifactId>vaadin-client-compiler</artifactId>
			<version>${vaadin.version}</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>com.vaadin</groupId>
			<artifactId>vaadin-compatibility-client</artifactId>
			<version>${vaadin.version}</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>com.vaadin</groupId>
			<artifactId>vaadin-push</artifactId>
			<version>${vaadin.version}</version>
		</dependency>
		<dependency>
			<groupId>com.vaadin</groupId>
			<artifactId>vaadin-compatibility-themes</artifactId>
			<version>${vaadin.version}</version>
		</dependency>
		
		<dependency>
			<groupId>com.vaadin</groupId>
			<artifactId>vaadin-themes</artifactId>
			<version>${vaadin.version}</version>
		</dependency>
		<!-- Vaadin Add-Ons -->
		<dependency>
			<groupId>org.vaadin.addon</groupId>
			<artifactId>cdi-properties</artifactId>
			<version>0.9.2</version>
		</dependency>
		<dependency>
			<groupId>com.shaic</groupId>
			<artifactId>dms-galaxy-ejb-client</artifactId>
			<version>1.0-SNAPSHOT</version>
		</dependency>
		<dependency>
			<groupId>com.shaic</groupId>
			<artifactId>galaxy-wizard</artifactId>
			<version>1.0-SNAPSHOT</version>
		</dependency>

		<dependency>
			<groupId>org.eclipse.jdt.core.compiler</groupId>
			<artifactId>ecj</artifactId>
			<version>4.6.1</version>
		</dependency>

		<dependency>
			<groupId>org.eclipse.jdt</groupId>
			<artifactId>core</artifactId>
			<version>3.3.0-v_771</version>
			<exclusions>
				<exclusion>
					<artifactId>resources</artifactId>
					<groupId>org.eclipse.core</groupId>
				</exclusion>
			</exclusions>
		</dependency>

		<dependency>
			<groupId>com.oracle.soa</groupId>
			<artifactId>wlthint3client</artifactId>
			<version>12.1.3.0.0</version>
		</dependency>
		<dependency>
			<groupId>com.oracle.soa</groupId>
			<artifactId>xml</artifactId>
			<version>12.1.3.0.0</version>
		</dependency>
		<dependency>
			<groupId>com.oracle.soa</groupId>
			<artifactId>xmlparserv2</artifactId>
			<version>12.1.3.0.0</version>
		</dependency>
		<dependency>
			<groupId>com.oracle</groupId>
			<artifactId>ojdbc7</artifactId>
			<version>12.1.0.1</version>
		</dependency>
		<dependency>
			<groupId>com.google.guava</groupId>
			<artifactId>guava-gwt</artifactId>
			<version>18.0</version>
		</dependency>
		<dependency>
			<groupId>org.vaadin.virkki</groupId>
			<artifactId>carousel</artifactId>
			<version>0.5.2</version>
		</dependency>
 		<dependency>
			<groupId>org.vaadin.addon</groupId>
			<artifactId>cdi-mvp</artifactId>
			<version>0.9.4</version>
		</dependency> 
		<dependency>
			<groupId>com.vaadin</groupId>
			<artifactId>vaadin-cdi</artifactId>
			<version>2.0.0</version>
			<!-- <version>1.0.0.alpha1</version> -->
		</dependency>
		
		  <dependency>
            <groupId>javax.enterprise</groupId>
            <artifactId>cdi-api</artifactId>
            <version>1.2</version>
            <scope>provided</scope>
        </dependency>
        
		<dependency>
			<groupId>org.vaadin.addons</groupId>
			<artifactId>csvalidation</artifactId>
			<version>0.5.1</version>
		</dependency>

		<dependency>
			<groupId>com.google.gwt</groupId>
			<artifactId>gwt-user</artifactId>
			<version>2.8.2</version>
		</dependency>
<!-- 		<dependency>
			<groupId>org.tepi.filtertable</groupId>
			<artifactId>filteringtable</artifactId>
			<version>1.0.1.v8</version>
		</dependency> -->
		 <dependency>
		     <groupId>org.vaadin.addons</groupId>
		     <artifactId>filteringtable</artifactId>
		     <version>0.9.13.v7</version>
		</dependency>

		<dependency>
			<groupId>org.vaadin.addons</groupId>
			<artifactId>popupbutton</artifactId>
			<version>3.0.0</version>
		</dependency>
		<dependency>
			<groupId>org.vaadin.addons</groupId>
			<artifactId>pagedtable</artifactId>
			<version>0.7.0</version>
		</dependency>
		<dependency>
			<groupId>org.vaadin.addon</groupId>
			<artifactId>confirmdialog</artifactId>
			<version>3.2.0</version>
		</dependency>
		<!-- https://mvnrepository.com/artifact/com.vaadin.addon/grid -->
		<dependency>
			<groupId>com.vaadin.addon</groupId>
			<artifactId>grid</artifactId>
			<version>2.0.0</version>
		</dependency>
		
		<dependency>
			<groupId>com.zybnet</groupId>
			<artifactId>vaadin-autocomplete</artifactId>
			<version>1.1.1</version>
		</dependency>
		
		<!-- <dependency>
   <groupId>org.vaadin.addons</groupId>
   <artifactId>autocomplete</artifactId>
   <version>0.2.4</version>
</dependency> -->
		
		<dependency>
   <groupId>eu.maxschuster</groupId>
   <artifactId>vaadin-autocompletetextfield</artifactId>
   <version>3.0-alpha-2</version>
</dependency>
		<dependency>
			<groupId>de.steinwedel.vaadin.addon</groupId>
			<artifactId>messagebox</artifactId>
			<version>2.0.7</version>
		</dependency>
		
		
		<dependency>
			<groupId>net.sf.jasperreports</groupId>
			<artifactId>jasperreports</artifactId>
			<version>5.1.0</version>
			<exclusions>
				<exclusion>
					<artifactId>jdtcore</artifactId>
					<groupId>eclipse</groupId>
				</exclusion>
				<exclusion>
					<artifactId>jackson-annotations</artifactId>
					<groupId>com.fasterxml.jackson.core</groupId>
				</exclusion>
			</exclusions>
		</dependency>
		
		<dependency>
            <groupId>net.sf.jasperreports</groupId>
            <artifactId>jasperreports-fonts</artifactId>
            <version>6.8.0</version>
	    </dependency>
		<dependency>
			<groupId>xml-apis</groupId>
			<artifactId>xml-apis</artifactId>
			<version>1.4.01</version>
		</dependency>

		<dependency>
			<groupId>commons-beanutils</groupId>
			<artifactId>commons-beanutils</artifactId>
			<version>1.9.1</version>
		</dependency>
		<dependency>
			<groupId>commons-collections</groupId>
			<artifactId>commons-collections</artifactId>
			<version>3.2.1</version>
		</dependency>
		<dependency>
			<groupId>commons-digester</groupId>
			<artifactId>commons-digester</artifactId>
			<version>1.8</version>
		</dependency>
		<dependency>
			<groupId>commons-logging</groupId>
			<artifactId>commons-logging</artifactId>
			<version>1.1.1</version>
		</dependency>
		<dependency>
			<groupId>commons-io</groupId>
			<artifactId>commons-io</artifactId>
			<version>2.4</version>
		</dependency>
		<dependency>
			<groupId>org.codehaus.groovy</groupId>
			<artifactId>groovy-all</artifactId>
			<version>2.0.1</version>
		</dependency>
		<dependency>
			<groupId>com.lowagie</groupId>
			<artifactId>itext-rups</artifactId>
			<version>2.1.7</version>
		</dependency>
		<dependency>
			<groupId>javassist</groupId>
			<artifactId>javassist</artifactId>
			<version>3.12.1.GA</version>
		</dependency>
		<!-- Mapper -->
		<dependency>
			<groupId>ma.glasnost.orika</groupId>
			<artifactId>orika-core</artifactId>
			<version>1.5.0</version>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-api</artifactId>
			<version>1.7.7</version>
		</dependency>
		<dependency>
			<groupId>com.thoughtworks.paranamer</groupId>
			<artifactId>paranamer</artifactId>
			<version>2.7</version>
		</dependency>
		<dependency>
			<groupId>ma.glasnost.orika</groupId>
			<artifactId>orika-eclipse-tools</artifactId>
			<version>1.5.0</version>
			<exclusions>
				<exclusion>
					<artifactId>org.eclipse.jdt.core</artifactId>
					<groupId>org.eclipse.tycho</groupId>
				</exclusion>
			</exclusions>
		</dependency>
	 	   <dependency>
			<groupId>ch.meemin</groupId>
			<artifactId>PMTable</artifactId>
			<version>1.10.0</version>
		</dependency>  
		<dependency>
			<groupId>org.vaadin.addons</groupId>
			<artifactId>tokenfield</artifactId>
			<version>7.0.1</version>
		</dependency>
		<!-- will be removed in future -->
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-core</artifactId>
			<version>4.2.16.Final</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>org.hibernate.common</groupId>
			<artifactId>hibernate-commons-annotations</artifactId>
			<version>4.0.2.Final</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-entitymanager</artifactId>
			<version>4.2.16.Final</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-c3p0</artifactId>
			<version>4.2.3.Final</version>
		</dependency>
		<dependency>
			<groupId>org.vaadin.addons</groupId>
			<artifactId>flexibleoptiongroup</artifactId>
			<version>2.3.0</version>
		</dependency>
		<dependency>
			<groupId>com.vaadin.addon</groupId>
			<artifactId>tableexport-for-vaadin</artifactId>
			<version>1.6.2</version>
		</dependency>
		<dependency>
			<groupId>atg.taglib.json</groupId>
			<artifactId>json-taglib</artifactId>
			<version>0.4.1</version>
		</dependency>
		<!-- <dependency>
			<groupId>org.vaadin.addons</groupId>
			<artifactId>pdfexport</artifactId>
			<version>1.0.1</version>
		</dependency> -->
		<!-- quartz scheduler dependency starts -->
		<dependency>
			<groupId>org.quartz-scheduler</groupId>
			<artifactId>quartz</artifactId>
			<version>2.2.1</version>
		</dependency>
		<dependency>
			<groupId>org.quartz-scheduler</groupId>
			<artifactId>quartz-jobs</artifactId>
			<version>2.2.1</version>
		</dependency>

		<!-- JBOSS EAP-6.4 dependency starts -->
		<dependency>
			<groupId>org.ajaxtags</groupId>
			<artifactId>ajaxtags</artifactId>
			<version>1.3-beta-rc7</version>
		</dependency>
		<dependency>
			<groupId>net.htmlparser</groupId>
			<artifactId>jericho-html</artifactId>
			<version>1.5-dev1</version>
		</dependency>

		<dependency>
			<groupId>org.apache.tiles</groupId>
			<artifactId>tiles-jsp</artifactId>
			<version>2.1.1</version>
		</dependency>

		<dependency>
			<groupId>org.json</groupId>
			<artifactId>json</artifactId>
			<version>20090211</version>
		</dependency>

		<dependency>
			<groupId>org.apache.pdfbox</groupId>
			<artifactId>pdfbox</artifactId>
			<version>1.8.11</version>
		</dependency>

		<dependency>
			<groupId>org.apache.poi</groupId>
			<artifactId>poi-ooxml</artifactId>
			<version>3.8-beta4</version>
		</dependency>

		<dependency>
			<groupId>com.itextpdf</groupId>
			<artifactId>itextpdf</artifactId>
			<version>5.5.6</version>
		</dependency>

		<dependency>
			<groupId>net.sf.json-lib</groupId>
			<artifactId>json-lib</artifactId>
			<version>2.4</version>
		</dependency>

		<dependency>
			<groupId>org.apache.tomcat</groupId>
			<artifactId>tomcat-util</artifactId>
			<version>8.0.0-RC1</version>
		</dependency>
		<!-- JSP validation Page to get token -->
		<dependency>
			<groupId>com.nimbusds</groupId>
			<artifactId>nimbus-jose-jwt</artifactId>
			<version>4.4</version>
		</dependency>
		<dependency>
			<groupId>org.testng</groupId>
			<artifactId>testng</artifactId>
			<version>6.8</version>
		</dependency>
		<dependency>
			<groupId>net.minidev</groupId>
			<artifactId>json-smart</artifactId>
			<version>2.1.0</version>
		</dependency>

		<!-- ComboBoxMultiSelect Addon -->
		<dependency>
			<groupId>org.vaadin.addons</groupId>
			<artifactId>vaadin-combobox-multiselect</artifactId>
			<version>1.2.2</version>
		</dependency>

		<!-- EnhancedBrowserWindowOpener Addon -->
		<dependency>
			<groupId>org.vaadin.addon</groupId>
			<artifactId>enhanced-window-opener</artifactId>
			<version>0.1.2</version>
		</dependency>


		<!-- Added for exporting the tasks from queue to excel sheet -->
		<!-- JBOSS EAP-6.4 dependency ends -->
		<dependency> 
		<groupId>org.jboss.resteasy</groupId> 
		<artifactId>resteasy-jaxrs</artifactId> 
		<version>3.0.7.Final</version> 
		<scope>provided</scope>
		</dependency>
		<!-- quartz scheduler dependency ends -->

		<!-- XMLTogregorian calendar conversion dependency -->
		<!-- <dependency> <groupId>xerces</groupId> <artifactId>xercesImpl</artifactId> 
			<version>2.11.0</version> </dependency> -->

		<dependency>
			<groupId>org.keycloak</groupId>
			<artifactId>keycloak-saml-servlet-filter-adapter</artifactId>
			<version>3.2.0.Final</version>
		</dependency>
		<dependency>
			<groupId>org.keycloak</groupId>
			<artifactId>keycloak-core</artifactId>
			<version>3.2.0.Final</version>
		</dependency>
		<dependency>
			<groupId>org.keycloak</groupId>
			<artifactId>keycloak-servlet-filter-adapter</artifactId>
			<version>3.2.0.Final</version>
			<exclusions>
				<exclusion>
					<artifactId>jackson-annotations</artifactId>
					<groupId>com.fasterxml.jackson.core</groupId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>org.keycloak</groupId>
			<artifactId>keycloak-adapter-core</artifactId>
			<version>3.2.0.Final</version>
		</dependency>
		<dependency>
			<groupId>org.keycloak</groupId>
			<artifactId>keycloak-admin-client</artifactId>
			<version>3.1.0.Final</version>
		</dependency>
		<dependency>
			<groupId>org.keycloak</groupId>
			<artifactId>keycloak-model-api</artifactId>
			<version>1.0.2.Final</version>
			<scope>provided</scope>
		</dependency>

		<!-- Newly added dependencies after wso2 removal Start -->
		<dependency>
			<groupId>org.apache.axis2</groupId>
			<artifactId>axis2-adb</artifactId>
			<version>1.6.0</version>
		</dependency>

		<dependency>
			<groupId>com.google.code.gson</groupId>
			<artifactId>gson</artifactId>
			<version>2.8.2</version>
		</dependency>

		<dependency>
			<groupId>org.apache.ws.security</groupId>
			<artifactId>wss4j</artifactId>
			<version>1.5.11</version>
		</dependency>


		<!-- Newly added dependencies after wso2 removal End -->
		<!-- HashIds for URL shortener -->
		<dependency>
			<groupId>org.hashids</groupId>
			<artifactId>hashids</artifactId>
			<version>1.0.3</version>
		</dependency>
		
		
     <dependency>
           <groupId>org.icepush</groupId>
           <artifactId>icepush</artifactId>
           <version>4.3.0</version>
        </dependency>


<dependency>
			<groupId>org.eclipse.xtend</groupId>
			<artifactId>org.eclipse.xtend.lib.gwt</artifactId>
			<version>2.4.1</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>org.eclipse.xtext</groupId>
			<artifactId>org.eclipse.xtext.xbase.lib.gwt</artifactId>
			<version>2.4.1</version>
			<scope>compile</scope>
		</dependency>
	</dependencies>