How to execute HibernateToolTask from Ant when Hibernate Tools is a Maven dependency

Question

I am using Hibernate Tools to generate pojo and dao in my project. It is currently working in the Hibernate perspective using Run > Hibernate Code Generation... However, I want to automatize this as part of a more complex build where I need to do some pre-processing, running the hibernate code genaration and doing some post-processing. I have an Ant build file for doing this, but I don't know how to reference the Maven dependencies jar

<?xml version="1.0" ?>
<!DOCTYPE project>
<project name="Hibernate Tools hbm2java" default="gensrc">

    <path id="tools">
        <!--
            Here {
        -->
        <path location="lib/hibernate-tools-4.3.1.CR1.jar"/>
        <!-- more dependencies... -->
        <!--
            }
        -->
        ...
    </path>
    <taskdef name="gen-src" classname="org.hibernate.tool.ant.HibernateToolTask"
             classpathref="tools" />
    <target name="gensrc">
        ...
    </target>
</project>

I am getting this warning:

taskdef class org.hibernate.tool.ant.HibernateToolTask cannot be found using the classloader AntClassLoader[]

with the consequent build error:

BUILD FAILED
/.../hibernate-gen.xml:16: taskdef class org.hibernate.tool.ant.HibernateToolTask cannot be found using the classloader AntClassLoader[]

How can I reference the jar from Maven dependency to call the org.hibernate.tool.ant.HibernateToolTask?

score 1 · Accepted Answer · answered Jul 11 '15 at 06:39

To automatate pojo generation,you can add a maven-antrun-plugin plugin to the pom.xml file. Within this plugin, in the tasks section, you can directly invoke the Ant tasks, described by you.

<build>
    ...
    <plugins>
       <plugin>
          <artifactId>maven-antrun-plugin</artifactId>
          <executions>
            <execution>
              <phase>generate-sources</phase>
              <configuration>
                <tasks>
                  <taskdef name="hibernatetool"
                           classname="org.hibernate.tool.ant.HibernateToolTask"
                           classpathref="maven.dependency.classpath"/>

                  <hbm2java output="src/generated">
                      <fileset dir="src/hibernate">
                          <include name="**/*.hbm.xml"/>
                      </fileset>
                  </hbm2java>
                </tasks>
              </configuration>
              <goals>
                <goal>run</goal>
              </goals>
            </execution>
          </executions>
        </plugin>
     </plugins>
  </build>

Or else you can automate by generating pojo classes using Hibernate tool task pragmatically. Refer this git project to generate pojos from hbm.

How to execute HibernateToolTask from Ant when Hibernate Tools is a Maven dependency

1 Answers1