Classpath problems(?)

[Mike Himstead]

First some code:

<?xml version="1.0" encoding="UTF-8"?>
<project name="Harnessing Hibernate: The Developer's Notebook"
default="db" basedir=".">
 
<path id="toolslib">
<path location="lib/hibernate-tools.jar"/>
<path location="lib/hibernate3.jar"/>
<path location="lib/freemarker.jar" />
</path>
 
<taskdef name="hibernatetool" classname="org.hibernate.tool.ant.HibernateToolTask" 
         classpathref="toolslib" />
 
<!-- Set up properties containing important project directories -->
<property name="source.root" value="src"/>
<property name="class.root" value="classes"/>
<property name="lib.dir" value="lib"/>
<property name="data.dir" value="data"/>
 
<!-- Set up the class path for compilation and execution -->
<path id="project.class.path">
<!-- Include our own classes, of course -->
<pathelement location="${class.root}"/>
<!-- Include jars in the project library directory -->
<fileset dir="${lib.dir}">
<include name="**/*.jar"/>
</fileset>
</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" description="Generate Java source from the O/R mapping files">
<hibernatetool destdir="${source.root}">
<classpath refid="project.class.path"/>
<configuration>
<fileset dir="${source.root}">
<include name="**/*.hbm.xml" />
</fileset>
</configuration>
<hbm2java jdk5="true" />
</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="**/*.hbm.xml"/>
</fileset>
</copy>
</target>
 
<!-- Compile the Java source of the project -->
<target name="compile" depends="prepare" description="Compiles all the Java classes">
<javac srcdir="${source.root}" destdir="${class.root}" 
   debug="on"
   verbose="on"
       optimize="off" 
       deprecation="on">
<classpath refid="project.class.path"/>
</javac>
</target>
 
<!-- Generate the schemas for all mapping files in our class tree -->
<target name="schema" depends="compile" description="Generate DB schema from the O/R mapping files">
<!-- Teach Ant how to use Hibernate's schema generation tool-->
<hibernatetool destdir=".">
<configuration propertyfile="hibernate.properties">
<fileset dir="${class.root}">
<include name="**/*.hbm.xml"/>
</fileset>
</configuration>
<hbm2ddl drop="no" delimiter=";"/>
</hibernatetool>
</target>
</project>
    

This is my build.xml. Sorry for posting all of it, but I want to make sure that nothing is missing. This build.xml belongs to a project I set up in Eclipse 3.2.1 to learn Hibernate (+ Hibernate tools). Everytime I try to run "codegen" I get:

Buildfile: C:\Java\Eigene Projekte\Hibernate\build.xml
codegen:
[hibernatetool] Executing Hibernate Tool with a Standard Configuration
[hibernatetool] 1. task: hbm2java (Generates a set of .java files)

BUILD FAILED
java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory

Total time: 1 second

This happens when starting from Eclipse and externally with a local Ant install. All external libraries reside in a lib folder next to the build.xml. commons-logging-1.0.4.jar IS in lib, it seems like it is not included in the classpath, but I think <path id="project.class.path"> etc... is correct.

What am I missing here? Is there a way to see the classpath Ant is using?

[Tim Holloway]

I think it's <echo message="classpath = ${class.path}"/>. In other words, Ant's a Java program and it passes on the JVM properties from the java.lang.System class.

[jj huang]

you are just missing some jar files in "toolslib" , look at below, you won't miss it!

<path id="toolslib">
<path location="lib/hibernate-tools.jar"/>
<path location="lib/hibernate3.jar"/>
<path location="lib/freemarker.jar" />
....... add your jar here ............... like commons-logging-xx.jar
</path>