Using configurations in Ant

antexample1

<!-- resolve the job and test dependencies to different directories -->

 <target name="resolve" depends="clean-lib" description="--> resolve and retrieve dependencies with ivy">
  <mkdir dir="${job.lib.dir}"/> <!-- not usually necessary, ivy creates the directory IF there are dependencies -->
  <mkdir dir="${test.lib.dir}"/> 
  <ivy:resolve file="${ivy.file}" transitive="true"/>
  <ivy:retrieve pattern="${job.lib.dir}/[artifact]-[revision].[ext]" conf="job" />
  <ivy:retrieve pattern="${test.lib.dir}/[artifact]-[revision].[ext]" conf="test" />
</target>

<!-- create paths for job and test

<path id="lib.path.id">
  <fileset dir="${job.lib.dir}" />
</path>

<path id="test.path.id">
    <pathelement location="${test.classes.dir}" />
    <pathelement location="${classes.dir}"/>
    <pathelement location="${basedir}/src/test/conf"/>
  	<fileset dir="${test.lib.dir}"/>
    <path refid="lib.path.id"/>
</path>

<!-- use the appropriate paths for compilation -->

<target name="compile" depends="resolve" description="--> compile the project">
  <mkdir dir="${classes.dir}" />
  <javac srcdir="${src.dir}" destdir="${classes.dir}" classpathref="lib.path.id" debug="true" includeantruntime="false"/>
</target>
    
<target name="compile-test" depends="compile" description="--> compile the test classes">
  <mkdir dir="${test.classes.dir}" />
  <javac srcdir="${test.src.dir}" destdir="${test.classes.dir}" classpathref="test.path.id" debug="true" />
</target>

<!-- only include job dependencies in the final .job file -->

<target name="job" depends="jar" description="--> generate a job file for this project">
  <jar destfile="${job.file}">     
    <zipfileset dir="${job.lib.dir}" prefix="lib"
      includes="**/*.jar" excludes="hadoop-*.jar"/>
  </jar>
</target>