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GWT RequestFactory compilation fail in NetBeans

I have a trouble with make a simple GWT application using RequestFactory. GWT-RPC application works great. I'm using NetBeans, Maven, GWT 2.4.0. Compilation always fails.

Here's some compilation steps with error at the end:

Apache Maven 3.0.4 (r1232337; 2012-01-17 10:44:56+0200)
Maven home: C:\Programs\NetBeans 7.1.1\java\maven\bin\..
Java version: 1.6.0_26, vendor: Sun Microsystems Inc.
Java home: C:\Programs (x86)\Java\jdk1.6.0_26\jre
Default locale: ru_RU, platform encoding: Cp1251
OS name: "windows 7", version: "6.1", arch: "x86", family: "windows"

......................................................

[gwt:compile]
org.codehaus.mojo:gwt-maven-plugin:jar:2.2.0:
   com.google.gwt:gwt-user:jar:2.4.0:runtime
      javax.validation:validation-api:jar:1.0.0.GA:runtime
      javax.validation:validation-api:jar:sources:1.0.0.GA:runtime
   com.google.gwt:gwt-dev:jar:2.4.0:runtime
   com.google.gwt:gwt-servlet:jar:2.4.0:runtime
   com.google.web.bindery:requestfactory-server:jar:2.4.0:runtime
      org.json:json:jar:20090211:runtime
   com.google.web.bindery:requestfactory-apt:jar:2.4.0:runtime
   org.hibernate:hibernate-validator:jar:4.1.0.Final:runtime
      org.slf4j:slf4j-api:jar:1.5.6:runtime
   org.apache.maven:maven-project:jar:2.0.9:compile
      org.apache.maven:maven-settings:jar:2.0.9:compile
      org.apache.maven:maven-profile:jar:2.0.9:compile
      org.apache.maven:maven-artifact-manager:jar:2.0.9:compile
         org.apache.maven:maven-repository-metadata:jar:2.0.9:compile
      org.apache.maven:maven-plugin-registry:jar:2.0.9:compile
   org.apache.maven:maven-model:jar:2.0.9:compile
   org.apache.maven:maven-artifact:jar:2.0.9:compile
   org.apache.maven:maven-plugin-api:jar:2.0.9:compile
   org.apache.maven.reporting:maven-reporting-api:jar:3.0:compile
   org.apache.maven.reporting:maven-reporting-impl:jar:2.1:compile
      org.apache.maven.doxia:doxia-core:jar:1.1.2:compile
         commons-httpclient:commons-httpclient:jar:3.1:compile
            commons-codec:commons-codec:jar:1.2:compile
      commons-validator:commons-validator:jar:1.2.0:compile
         commons-beanutils:commons-beanutils:jar:1.7.0:compile
         commons-digester:commons-digester:jar:1.6:compile
         oro:oro:jar:2.0.8:compile
   org.codehaus.plexus:plexus-container-default:jar:1.0-alpha-9-stable-1:compile
   org.apache.maven.doxia:doxia-sink-api:jar:1.0:compile
   org.apache.maven.doxia:doxia-site-renderer:jar:1.1.4:compile
      org.apache.maven.doxia:doxia-logging-api:jar:1.1.4:compile
      org.apache.maven.doxia:doxia-decoration-model:jar:1.1.4:compile
      org.apache.maven.doxia:doxia-module-xhtml:jar:1.1.4:compile
      org.apache.maven.doxia:doxia-module-fml:jar:1.1.4:compile
      org.codehaus.plexus:plexus-i18n:jar:1.0-beta-7:compile
      org.codehaus.plexus:plexus-velocity:jar:1.1.7:compile
      org.apache.velocity:velocity:jar:1.5:compile
      commons-collections:commons-collections:jar:3.2:compile
   org.springframework:spring-core:jar:3.0.5.RELEASE:compile
      org.springframework:spring-asm:jar:3.0.5.RELEASE:compile
      commons-logging:commons-logging:jar:1.1.1:compile
   org.codehaus.plexus:plexus-utils:jar:2.0.5:compile
   com.thoughtworks.qdox:qdox:jar:1.12:compile
   freemarker:freemarker:jar:2.3.6:compile
   org.codehaus.plexus:plexus-archiver:jar:1.0-alpha-9:compile
      org.codehaus.plexus:plexus-io:jar:1.0-alpha-1:compile
   org.apache.maven:maven-archiver:jar:2.4.1:compile
      org.codehaus.plexus:plexus-interpolation:jar:1.13:compile
   junit:junit:jar:4.8.1:compile
   org.apache.maven.surefire:surefire-booter:jar:2.4.3:compile
   org.apache.maven.surefire:surefire-api:jar:2.4.3:compile
   commons-lang:commons-lang:jar:2.5:compile
   org.jdom:jdom:jar:1.1:compile
   jaxen:jaxen:jar:1.1.1:compile
      dom4j:dom4j:jar:1.6.1:compile
      jdom:jdom:jar:1.0:compile
      xml-apis:xml-apis:jar:1.3.02:compile
      xom:xom:jar:1.0:compile
         xerces:xmlParserAPIs:jar:2.6.2:compile
         xalan:xalan:jar:2.6.0:compile
         com.ibm.icu:icu4j:jar:2.6.1:compile
   org.apache.bcel:bcel:jar:5.2:compile
      jakarta-regexp:jakarta-regexp:jar:1.4:compile
   xerces:xercesImpl:jar:2.9.1:compile
   classworlds:classworlds:jar:1.1-alpha-2:compile
   org.codehaus.plexus:plexus-compiler-api:jar:1.5.3:compile
   org.codehaus.plexus:plexus-compiler-javac:jar:1.5.3:compile
Created new class realm plugin>org.codehaus.mojo:gwt-maven-plugin:2.2.0
Importing foreign packages into class realm plugin>org.codehaus.mojo:gwt-maven-plugin:2.2.0
  Imported:  < maven.api
Populating class realm plugin>org.codehaus.mojo:gwt-maven-plugin:2.2.0
  Included: org.codehaus.mojo:gwt-maven-plugin:jar:2.2.0
  Included: com.google.gwt:gwt-user:jar:2.4.0
  Included: javax.validation:validation-api:jar:1.0.0.GA
  Included: javax.validation:validation-api:jar:sources:1.0.0.GA
  Included: com.google.gwt:gwt-dev:jar:2.4.0
  Included: com.google.gwt:gwt-servlet:jar:2.4.0
  Included: com.google.web.bindery:requestfactory-server:jar:2.4.0
  Included: org.json:json:jar:20090211
  Included: com.google.web.bindery:requestfactory-apt:jar:2.4.0
  Included: org.hibernate:hibernate-validator:jar:4.1.0.Final
  Included: org.slf4j:slf4j-api:jar:1.5.6
  Included: org.apache.maven.reporting:maven-reporting-api:jar:3.0
  Included: org.apache.maven.reporting:maven-reporting-impl:jar:2.1
  Included: org.apache.maven.doxia:doxia-core:jar:1.1.2
  Included: commons-httpclient:commons-httpclient:jar:3.1
  Included: commons-codec:commons-codec:jar:1.2
  Included: commons-validator:commons-validator:jar:1.2.0
  Included: commons-beanutils:commons-beanutils:jar:1.7.0
  Included: commons-digester:commons-digester:jar:1.6
  Included: oro:oro:jar:2.0.8
  Included: org.apache.maven.doxia:doxia-sink-api:jar:1.0
  Included: org.apache.maven.doxia:doxia-site-renderer:jar:1.1.4
  Included: org.apache.maven.doxia:doxia-logging-api:jar:1.1.4
  Included: org.apache.maven.doxia:doxia-decoration-model:jar:1.1.4
  Included: org.apache.maven.doxia:doxia-module-xhtml:jar:1.1.4
  Included: org.apache.maven.doxia:doxia-module-fml:jar:1.1.4
  Included: org.codehaus.plexus:plexus-i18n:jar:1.0-beta-7
  Included: org.codehaus.plexus:plexus-velocity:jar:1.1.7
  Included: org.apache.velocity:velocity:jar:1.5
  Included: commons-collections:commons-collections:jar:3.2
  Included: org.springframework:spring-core:jar:3.0.5.RELEASE
  Included: org.springframework:spring-asm:jar:3.0.5.RELEASE
  Included: commons-logging:commons-logging:jar:1.1.1
  Included: org.codehaus.plexus:plexus-utils:jar:2.0.5
  Included: com.thoughtworks.qdox:qdox:jar:1.12
  Included: freemarker:freemarker:jar:2.3.6
  Included: org.codehaus.plexus:plexus-archiver:jar:1.0-alpha-9
  Included: org.codehaus.plexus:plexus-io:jar:1.0-alpha-1
  Included: org.apache.maven:maven-archiver:jar:2.4.1
  Included: org.codehaus.plexus:plexus-interpolation:jar:1.13
  Included: junit:junit:jar:4.8.1
  Included: org.apache.maven.surefire:surefire-booter:jar:2.4.3
  Included: org.apache.maven.surefire:surefire-api:jar:2.4.3
  Included: commons-lang:commons-lang:jar:2.5
  Included: org.jdom:jdom:jar:1.1
  Included: jaxen:jaxen:jar:1.1.1
  Included: dom4j:dom4j:jar:1.6.1
  Included: jdom:jdom:jar:1.0
  Included: xml-apis:xml-apis:jar:1.3.02
  Included: xom:xom:jar:1.0
  Included: xerces:xmlParserAPIs:jar:2.6.2
  Included: xalan:xalan:jar:2.6.0
  Included: com.ibm.icu:icu4j:jar:2.6.1
  Included: org.apache.bcel:bcel:jar:5.2
  Included: jakarta-regexp:jakarta-regexp:jar:1.4
  Included: xerces:xercesImpl:jar:2.9.1
  Included: org.codehaus.plexus:plexus-compiler-api:jar:1.5.3
  Included: org.codehaus.plexus:plexus-compiler-javac:jar:1.5.3
  Excluded: org.apache.maven:maven-project:jar:2.0.9
  Excluded: org.apache.maven:maven-settings:jar:2.0.9
  Excluded: org.apache.maven:maven-profile:jar:2.0.9
  Excluded: org.apache.maven:maven-artifact-manager:jar:2.0.9
  Excluded: org.apache.maven:maven-repository-metadata:jar:2.0.9
  Excluded: org.apache.maven:maven-plugin-registry:jar:2.0.9
  Excluded: org.apache.maven:maven-model:jar:2.0.9
  Excluded: org.apache.maven:maven-artifact:jar:2.0.9
  Excluded: org.apache.maven:maven-plugin-api:jar:2.0.9
  Excluded: org.codehaus.plexus:plexus-container-default:jar:1.0-alpha-9-stable-1
  Excluded: classworlds:classworlds:jar:1.1-alpha-2
Configuring mojo org.codehaus.mojo:gwt-maven-plugin:2.2.0:compile from plugin realm ClassRealm[plugin>org.codehaus.mojo:gwt-maven-plugin:2.2.0, parent: sun.misc.Launcher$AppClassLoader@d9f9c3]
Configuring mojo 'org.codehaus.mojo:gwt-maven-plugin:2.2.0:compile' with basic configurator -->
  (f) compileReport = true
  (f) disableCastChecking = false
  (f) disableClassMetadata = false
  (f) draftCompile = false
  (f) enableAssertions = false
  (f) extra = D:\proj\Java\GWT\gwtapp\target\extra
  (f) extraJvmArgs = -Xmx512m
  (f) extraParam = false
  (f) force = false
  (f) gen = D:\proj\Java\GWT\gwtapp\target\.generated
  (f) generateDirectory = D:\proj\Java\GWT\gwtapp\target\generated-sources\gwt
  (f) gwtSdkFirstInClasspath = false
  (f) inplace = false
  (f) localRepository =        id: local
      url: file:///C:/Users/casper/.m2/repository/
   layout: none

  (f) logLevel = INFO
  (f) optimizationLevel = -1
  (f) pluginArtifacts = {org.codehaus.mojo:gwt-maven-plugin=org.codehaus.mojo:gwt-maven-plugin:maven-plugin:2.2.0:, com.google.gwt:gwt-user=com.google.gwt:gwt-user:jar:2.4.0:runtime, javax.validation:validation-api=javax.validation:validation-api:jar:sources:1.0.0.GA:runtime, com.google.gwt:gwt-dev=com.google.gwt:gwt-dev:jar:2.4.0:runtime, com.google.gwt:gwt-servlet=com.google.gwt:gwt-servlet:jar:2.4.0:runtime, com.google.web.bindery:requestfactory-server=com.google.web.bindery:requestfactory-server:jar:2.4.0:runtime, org.json:json=org.json:json:jar:20090211:runtime, com.google.web.bindery:requestfactory-apt=com.google.web.bindery:requestfactory-apt:jar:2.4.0:runtime, org.hibernate:hibernate-validator=org.hibernate:hibernate-validator:jar:4.1.0.Final:runtime, org.slf4j:slf4j-api=org.slf4j:slf4j-api:jar:1.5.6:runtime, org.apache.maven.reporting:maven-reporting-api=org.apache.maven.reporting:maven-reporting-api:jar:3.0:compile, org.apache.maven.reporting:maven-reporting-impl=org.apache.maven.reporting:maven-reporting-impl:jar:2.1:compile, org.apache.maven.doxia:doxia-core=org.apache.maven.doxia:doxia-core:jar:1.1.2:compile, commons-httpclient:commons-httpclient=commons-httpclient:commons-httpclient:jar:3.1:compile, commons-codec:commons-codec=commons-codec:commons-codec:jar:1.2:compile, commons-validator:commons-validator=commons-validator:commons-validator:jar:1.2.0:compile, commons-beanutils:commons-beanutils=commons-beanutils:commons-beanutils:jar:1.7.0:compile, commons-digester:commons-digester=commons-digester:commons-digester:jar:1.6:compile, oro:oro=oro:oro:jar:2.0.8:compile, org.apache.maven.doxia:doxia-sink-api=org.apache.maven.doxia:doxia-sink-api:jar:1.0:compile, org.apache.maven.doxia:doxia-site-renderer=org.apache.maven.doxia:doxia-site-renderer:jar:1.1.4:compile, org.apache.maven.doxia:doxia-logging-api=org.apache.maven.doxia:doxia-logging-api:jar:1.1.4:compile, org.apache.maven.doxia:doxia-decoration-model=org.apache.maven.doxia:doxia-decoration-model:jar:1.1.4:compile, org.apache.maven.doxia:doxia-module-xhtml=org.apache.maven.doxia:doxia-module-xhtml:jar:1.1.4:compile, org.apache.maven.doxia:doxia-module-fml=org.apache.maven.doxia:doxia-module-fml:jar:1.1.4:compile, org.codehaus.plexus:plexus-i18n=org.codehaus.plexus:plexus-i18n:jar:1.0-beta-7:compile, org.codehaus.plexus:plexus-velocity=org.codehaus.plexus:plexus-velocity:jar:1.1.7:compile, org.apache.velocity:velocity=org.apache.velocity:velocity:jar:1.5:compile, commons-collections:commons-collections=commons-collections:commons-collections:jar:3.2:compile, org.springframework:spring-core=org.springframework:spring-core:jar:3.0.5.RELEASE:compile, org.springframework:spring-asm=org.springframework:spring-asm:jar:3.0.5.RELEASE:compile, commons-logging:commons-logging=commons-logging:commons-logging:jar:1.1.1:compile, org.codehaus.plexus:plexus-utils=org.codehaus.plexus:plexus-utils:jar:2.0.5:compile, com.thoughtworks.qdox:qdox=com.thoughtworks.qdox:qdox:jar:1.12:compile, freemarker:freemarker=freemarker:freemarker:jar:2.3.6:compile, org.codehaus.plexus:plexus-archiver=org.codehaus.plexus:plexus-archiver:jar:1.0-alpha-9:compile, org.codehaus.plexus:plexus-io=org.codehaus.plexus:plexus-io:jar:1.0-alpha-1:compile, org.apache.maven:maven-archiver=org.apache.maven:maven-archiver:jar:2.4.1:compile, org.codehaus.plexus:plexus-interpolation=org.codehaus.plexus:plexus-interpolation:jar:1.13:compile, junit:junit=junit:junit:jar:4.8.1:compile, org.apache.maven.surefire:surefire-booter=org.apache.maven.surefire:surefire-booter:jar:2.4.3:compile, org.apache.maven.surefire:surefire-api=org.apache.maven.surefire:surefire-api:jar:2.4.3:compile, commons-lang:commons-lang=commons-lang:commons-lang:jar:2.5:compile, org.jdom:jdom=org.jdom:jdom:jar:1.1:compile, jaxen:jaxen=jaxen:jaxen:jar:1.1.1:compile, dom4j:dom4j=dom4j:dom4j:jar:1.6.1:compile, jdom:jdom=jdom:jdom:jar:1.0:compile, xml-apis:xml-apis=xml-apis:xml-apis:jar:1.3.02:compile, xom:xom=xom:xom:jar:1.0:compile, xerces:xmlParserAPIs=xerces:xmlParserAPIs:jar:2.6.2:compile, xalan:xalan=xalan:xalan:jar:2.6.0:compile, com.ibm.icu:icu4j=com.ibm.icu:icu4j:jar:2.6.1:compile, org.apache.bcel:bcel=org.apache.bcel:bcel:jar:5.2:compile, jakarta-regexp:jakarta-regexp=jakarta-regexp:jakarta-regexp:jar:1.4:compile, xerces:xercesImpl=xerces:xercesImpl:jar:2.9.1:compile, org.codehaus.plexus:plexus-compiler-api=org.codehaus.plexus:plexus-compiler-api:jar:1.5.3:compile, org.codehaus.plexus:plexus-compiler-javac=org.codehaus.plexus:plexus-compiler-javac:jar:1.5.3:compile}
  (f) project = MavenProject: ru.itskills.gwtapp:App:1.0-SNAPSHOT @ D:\proj\Java\GWT\gwtapp\pom.xml
  (f) remoteRepositories = [       id: central
      url: http://repo.maven.apache.org/maven2
   layout: default
snapshots: [enabled => false, update => daily]
 releases: [enabled => true, update => daily]
]
  (f) skip = false
  (f) soyc = false
  (f) soycDetailed = false
  (f) strict = false
  (f) style = OBF
  (f) treeLogger = false
  (f) validateOnly = false
  (f) version = 2.2.0
  (f) warSourceDirectory = D:\proj\Java\GWT\gwtapp\src\main\webapp
  (f) webappDirectory = D:\proj\Java\GWT\gwtapp\target\App-1.0-SNAPSHOT
-- end configuration --

......................................................

Failed to execute goal org.codehaus.mojo:gwt-maven-plugin:2.2.0:compile (default) on project App: GWT Module com.google.web.bindery.requestfactory.shared.RequestFactory not found in project sources or resources. -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.codehaus.mojo:gwt-maven-plugin:2.2.0:compile (default) on project App: GWT Module com.google.web.bindery.requestfactory.shared.RequestFactory not found in project sources or resources.
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
        at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
        at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
        at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
        at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:601)
        at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
        at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
        at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
        at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.MojoExecutionException: GWT Module com.google.web.bindery.requestfactory.shared.RequestFactory not found in project sources or resources.
        at org.codehaus.mojo.gwt.shell.CompileMojo.compilationRequired(CompileMojo.java:498)
        at org.codehaus.mojo.gwt.shell.CompileMojo.compile(CompileMojo.java:325)
        at org.codehaus.mojo.gwt.shell.CompileMojo.doExecute(CompileMojo.java:255)
        at org.codehaus.mojo.gwt.shell.AbstractGwtShellMojo.execute(AbstractGwtShellMojo.java:119)
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
        ... 19 more
Caused by: org.codehaus.mojo.gwt.utils.GwtModuleReaderException: GWT Module com.google.web.bindery.requestfactory.shared.RequestFactory not found in project sources or resources.
        at org.codehaus.mojo.gwt.AbstractGwtModuleMojo.readModule(AbstractGwtModuleMojo.java:205)
        at org.codehaus.mojo.gwt.GwtModule.getLocalInherits(GwtModule.java:186)
        at org.codehaus.mojo.gwt.GwtModule.getInherits(GwtModule.java:146)
        at org.codehaus.mojo.gwt.GwtModule.getEntryPoints(GwtModule.java:111)
        at org.codehaus.mojo.gwt.shell.CompileMojo.compilationRequired(CompileMojo.java:440)
        ... 24 more

And 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>ru.itskills.gwtapp</groupId>
  <artifactId>App</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>ru.itskills.gwtapp.App</name>

  <properties>
    <!-- Convenience property to set the GWT version -->
    <gwtVersion>2.4.0</gwtVersion>
    <!-- GWT needs at least java 1.6 -->
    <maven.compiler.source>1.6</maven.compiler.source>
    <maven.compiler.target>1.6</maven.compiler.target>
    <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>
    <dependency>
      <groupId>com.google.gwt</groupId>
      <artifactId>gwt-dev</artifactId>
      <version>${gwtVersion}</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>javax.validation</groupId>
      <artifactId>validation-api</artifactId>
      <version>1.0.0.GA</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.validation</groupId>
      <artifactId>validation-api</artifactId>
      <version>1.0.0.GA</version>
      <classifier>sources</classifier>
      <scope>provided</scope>
    </dependency>

    <!-- RequestFactory -->
    <dependency>
      <groupId>com.google.web.bindery</groupId>
      <artifactId>requestfactory-server</artifactId>
      <version>${gwtVersion}</version>
    </dependency>

    <!-- see sample projects for correct placement -->
    <dependency>
      <groupId>com.google.web.bindery</groupId>
      <artifactId>requestfactory-apt</artifactId>
      <version>${gwtVersion}</version>
    </dependency>

    <dependency>
      <groupId>org.hibernate</groupId>
      <artifactId>hibernate-validator</artifactId>
      <version>4.1.0.Final</version>
    </dependency>
  </dependencies>

  <build>
    <!-- Generate compiled stuff in the folder used for developing mode -->
    <outputDirectory>target/www/WEB-INF/classes</outputDirectory>

    <plugins>

      <!-- GWT Maven Plugin-->
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>gwt-maven-plugin</artifactId>
        <version>2.2.0</version>
        <dependencies>
          <dependency>
            <groupId>com.google.gwt</groupId>
            <artifactId>gwt-user</artifactId>
            <version>${gwtVersion}</version>
          </dependency>
          <dependency>
            <groupId>com.google.gwt</groupId>
            <artifactId>gwt-dev</artifactId>
            <version>${gwtVersion}</version>
          </dependency>
          <dependency>
            <groupId>com.google.gwt</groupId>
            <artifactId>gwt-servlet</artifactId>
            <version>${gwtVersion}</version>
          </dependency>

            <!-- RequestFactory -->
            <dependency>
                <groupId>com.google.web.bindery</groupId>
                <artifactId>requestfactory-server</artifactId>
                <version>${gwtVersion}</version>
            </dependency>

            <!-- see sample projects for correct placement -->
            <dependency>
                <groupId>com.google.web.bindery</groupId>
                <artifactId>requestfactory-apt</artifactId>
                <version>${gwtVersion}</version>
            </dependency>
        </dependencies>
        <!-- JS is only needed in the package phase, this speeds up testing -->
        <executions>
          <execution>
            <phase>prepare-package</phase>
            <goals>
              <goal>compile</goal>
            </goals>
          </execution>
        </executions>
        <!-- Plugin configuration. There are many available options,
            see gwt-maven-plugin documentation at codehaus.org -->
        <configuration>
          <!-- URL that should be automatically opened in the GWT shell (gwt:run). -->
          <runTarget>App.html</runTarget>
          <!-- Location of the develop-mode web application structure (gwt:run). -->
          <hostedWebapp>target/www</hostedWebapp>
          <!-- Ask GWT to create the Story of Your Compile (SOYC) (gwt:compile) -->
          <compileReport>true</compileReport>
        </configuration>
      </plugin>

      <!-- Add source folders to test classpath in order to run gwt-tests as normal junit-tests -->
      <plugin>
        <artifactId>maven-surefire-plugin</artifactId>
        <version>2.5</version>
        <configuration>
          <additionalClasspathElements>
            <additionalClasspathElement>${project.build.sourceDirectory}</additionalClasspathElement>
            <additionalClasspathElement>${project.build.testSourceDirectory}</additionalClasspathElement>
          </additionalClasspathElements>
          <useManifestOnlyJar>false</useManifestOnlyJar>
          <forkMode>always</forkMode>

          <!-- Folder for generated testing stuff -->
          <systemProperties>
            <property>
              <name>gwt.args</name>
              <value>-out target/www</value>
            </property>
          </systemProperties>
        </configuration>
      </plugin>

      <!-- Copy static web files before executing gwt:run -->
      <plugin>
        <artifactId>maven-resources-plugin</artifactId>
        <version>2.4.2</version>
        <executions>
          <execution>
            <phase>compile</phase>
            <goals>
              <goal>copy-resources</goal>
            </goals>
            <configuration>
              <outputDirectory>target/www</outputDirectory>
              <resources>
                <resource>
                  <directory>src/main/webapp</directory>
                </resource>
              </resources>
            </configuration>
          </execution>
        </executions>
        <configuration>
          <encoding>${project.build.sourceEncoding}</encoding>
        </configuration>
      </plugin>

      <!-- Delete gwt generated stuff -->
      <plugin>
        <artifactId>maven-clean-plugin</artifactId>
        <version>2.3</version>
        <configuration>
          <filesets>
            <fileset><directory>src/main/webapp/app</directory></fileset>
            <fileset><directory>src/main/webapp/WEB-INF/classes</directory></fileset>
            <fileset><directory>tomcat</directory></fileset>
            <fileset><directory>www-test</directory></fileset>
            <fileset><directory>.gwt-tmp</directory></fileset>
          </filesets>
        </configuration>
      </plugin>

      <plugin>
        <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>com.google.gwt.eclipse.core.gwtProjectValidator</name>
            </buildCommand>
          </additionalBuildcommands>
          <additionalProjectnatures>
            <projectnature>com.google.gwt.eclipse.core.gwtNature</projectnature>
          </additionalProjectnatures>
        </configuration>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>2.3.2</version>
        <configuration>
          <encoding>${project.build.sourceEncoding}</encoding>
          <source>1.6</source>
          <target>1.6</target>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

Looks like there is no some plugin or library or smth like this.

You are most likely missing an inherit for requestfactory in your gwt.xml file.

Something along the lines of:

<inherits name='com.google.web.bindery.requestfactory.RequestFactory' />

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