openapi-generator/code-gen/build.xml

<project name="wordnik-libs-gen" default="compile" basedir=".">
	<property environment="env" />
	<property name="version.identifier" value="1.0" />
	<condition property="build.common.dir" value="${env.BUILD_COMMON}">
		<isset property="env.BUILD_COMMON" />
	</condition>

	<echo message="using build common dir: ${build.common.dir}"/>
	<import file="${build.common.dir}/ant/ant-common.xml" />
	<import file="${build.common.dir}/ant/ant-server.xml" />
	<import file="${build.common.dir}/ant/ant-test.xml" />

    <condition property="outputPath.set">
        <and>
            <isset property="outputPath"/>
            <isset property="apiServerRootDir"/>
        </and>
    </condition>
    <!-- generates the classes -->
    <target name="generate-java" depends="compile" description="generates APIs and model classes for java language">
        <fail unless="outputPath.set">
            Must specify the parameters: outputPath and apiServerRootDir eg. -DoutputPath=../../api-server-lib/java/src/main/java/com/wordnik/
                -DapiServerRootDir=../../api-server-lib/java/
                These are the output path of the Apis and the root directory that will be created for the api server (directory where structure is created)
        </fail>
        <mkdir dir="${outputPath}/api"/>
        <mkdir dir="${outputPath}/model"/>
        <echo>
            outputPath for Api = ${outputPath}
        </echo>
        <echo>
            apiServerRootDir = ${apiServerRootDir}
        </echo>
        <delete>
          <fileset  dir="${outputPath}"  includes="*.java"/>
        </delete>
        <java classname="com.wordnik.codegen.config.java.JavaLibCodeGen">
            <classpath>
                  <pathelement location="build/main/java" />
                  <fileset dir="lib">
                     <include name="**/*.jar"/>
                  </fileset>
            </classpath>
            <arg value="${outputPath}"/>
        </java>
        <copy todir="${apiServerRootDir}" overwrite="true">
            <fileset dir="conf/java/structure"/>
        </copy>
    </target>

</project>