Global Gateway

GWT 1.6 final officially got released yesterday. Most of you guys probably already have a GWT application sitting around that you want to upgrade from 1.5 to 1.6 to fully leverage the new features. One of the biggest changes is the structure of the WAR file. The public directory that got generated in 1.5 by running the projectCreator and applicationCreator tools does not exist anymore. HTML and CSS files will sit in the root directory of your WAR file. To convert your project have a look at the proposed project structure and apply it to your project. In your Ant build file you might have something similar to this one (assume that the WAR file got build before in a different target):

<path id="gwt.classpath">
   <pathelement location="src"/>
   <fileset dir="${libs.dir}/gwt/gwt-1.5.3">
      <include name="gwt-user.jar"/>
      <include name="gwt-dev-linux.jar"/>
      <include name="gwt-dev-mac.jar"/>
      <include name="gwt-dev-windows.jar"/>
   </fileset>
</path>

<target name="compile-gwt">
   <java classname="com.google.gwt.dev.GWTCompiler" fork="true">
      <arg line="-out ${gwt.compile.out}" />
      <arg value="${gwt.module}" />
      <arg line="-style ${gwt.style}" />
      <classpath refid="gwt.classpath"/>
   </java>
</target>

<target name="gwtify-war">
   <!-- We don't need the GWT compiler tmp files-->
   <delete dir="${gwt.compile.out}/.gwt-tmp"/>

   <zip destfile="${operations-consoleweb.path.jar}"
        update="true">
      <fileset dir="${gwt.compile.out}">
         <include name="**/*.*"/>
      </fileset>
   </zip>
</target>

With the new version of the GWT compiler the temporary directory .gwt-tmp, as a by-product of the compilation process, is not being generated anymore. Use the new compiler class name com.google.gwt.dev.Compiler and you should be done.

<path id="gwt.classpath">
   <pathelement location="src"/>
   <fileset dir="${libs.dir}/gwt/gwt-1.6.4">
      <include name="gwt-user.jar"/>
      <include name="gwt-dev-linux.jar"/>
      <include name="gwt-dev-mac.jar"/>
      <include name="gwt-dev-windows.jar"/>
   </fileset>
</path>

<target name="compile-gwt">
   <java classname="com.google.gwt.dev.Compiler" fork="true">
      <classpath>
         <path refid="operations-console.module.sourcepath"/>
         <path refid="gwt.classpath"/>
      </classpath>
      <jvmarg value="-Xmx256M"/>
      <arg value="${gwt.module}"/>
   </java>
</target>