Importing an ANT build that uses Maven ANT Tasks into Eclipse?

[Andrew Leer]

Hello,

I'm reading the book Harnessing Hibernate, and though my project compiles just fine from the command line, I'd like to use it in Eclipse.

The project uses the Maven ANT Tasks, and though I've used both ANT and Maven by themselves with Eclipse, I've never used the Maven ANT Tasks along with Eclipse.

I tried importing my existing project into my eclipse workspace by way of the File -> New -> Project ... and then selecting Java Project from Existing Ant Buildfile, then I select my ANT build file, and I am presented with the following error:

Error occurred creating project

Problem setting the classpath of the project from the javac classpath: Reference dependecy.class.path not found.

The project appears in Eclipse, but there's obviously something wrong.

I've tried adding an environment variable in my project to point to the maven repo (M2_REPO), without any luck, although eclipse appears to acknowledge that the classes withint the jars are present.

Here is the build file from Harnessing Hibernate:

<?xml version="1.0" ?>
<project name="Harnessing Hibernate 3 (Developer's Notebook Second Edition)"
	 default="db" basedir="."
	 xmlns:artifact="antlib:org.apache.maven.artifact.ant">

	<!-- Set up properties containing important project directories -->
	<property name="source.root" value="src"/>
	<property name="class.root" value="classes"/>
	<property name="data.dir" value="data"/>

	<artifact:dependencies pathId="dependency.class.path">
		<dependency groupId="hsqldb" artifactId="hsqldb"   version="1.8.0.7"/>
		<dependency groupId="org.hibernate" artifactId="hibernate"
			    version="3.2.5.ga">
			<exclusion groupId="javax.transaction" artifactId="jta"/>
	     </dependency>
		<dependency groupId="org.hibernate" artifactId="hibernate-tools"
			    version="3.2.0.beta9a"/>
		<dependency groupId="org.apache.geronimo.specs"
			    artifactId="geronimo-jta_1.1_spec" version="1.1"/>
		<dependency groupId="log4j" artifactId="log4j" version="1.2.14"/>
	</artifact:dependencies>

	<!-- Setup the class path for compilation and execution -->
	<path id="project.class.path">
		<!-- Include our own classes, of course -->
		<pathelement location="${class.root}" />
		
		<!-- Add the dependencies classpath -->
		<path refid="dependency.class.path"/>
	</path>

	<!-- Teach Ant how to use the Hibernate Tools -->
	<taskdef name="hibernatetool"
		 classname="org.hibernate.tool.ant.HibernateToolTask"
		 classpathref="project.class.path"/>

	<target name="db" description="Runs HSQLDB database management UI 
against the database file--use when application is not running">
		<java classname="org.hsqldb.util.DatabaseManager"
		      fork="yes">
			<classpath refid="project.class.path"/>
			<arg value="-driver"/>
			<arg value="org.hsqldb.jdbcDriver"/>
			<arg value="-url"/>
			<arg value="jdbc:hsqldb:${data.dir}/music"/>
			<arg value="-user"/>
			<arg value="sa"/>
		</java>
	</target>

	<!-- Generate the java code for all mapping files in our source tree -->
	<target name="codegen" depends="prepare"
		description="Generate Java source from the O/R mapping files">
		<hibernatetool destdir="${source.root}">
			<configuration configurationfile="${source.root}/hibernate.cfg.xml"/>
			<hbm2java/>
                </hibernatetool>
	</target>

	<!-- Create our runtime subdirectories and copy resources into them  -->
	<target name="prepare" description="Sets up build structures">
		<mkdir dir="${class.root}"/>
		
		<!-- Copy our property files and O/R mappings for use at runtime  -->
		<copy todir="${class.root}">
			<fileset dir="${source.root}" >
				<include name="**/*.properties"/>
				<include name="**/*.xml"/>
			</fileset>
		</copy>
	</target>

	<!-- Generate the schemas for all mapping files in our class tree -->
	<target name="schema" depends="prepare"
		description="Generate DB schema from the O/R mapping files">
		<hibernatetool destdir="${source.root}">
			<configuration configurationfile="${source.root}/hibernate.cfg.xml"/>
			<hbm2ddl drop="yes" />
		</hibernatetool>
	</target>

        <!-- Compile the java source of the proejct -->
        <target name="compile" depends="prepare"
                description="Compiles all Java classes">
                <javac srcdir="${source.root}"
                       destdir="${class.root}"
                       debug="on"
                       optimize="off"
                       deprecation="on">
                   <classpath refid="project.class.path" />
                </javac>
        </target>

        <target name="ctest" description="Creates and persists some
        sample data." depends="compile">
                <java classname="com.oreilly.hh.CreateTest"
                fork="true">
                        <classpath refid="project.class.path" />
                </java>
        </target>

	<target name="print-classpath" description="Show the dependency class path">
		<property name="class.path" refid="dependency.class.path" />
		<echo>${class.path}</echo>
	</target>
</project>

As you can see the dependency.class.path classpath entry that eclipse complained about, is that which specifies the list of dependencies from the maven ant tasks.

[Andrew Leer]

*bump*