JAXB - ECLIPSE

Question

Hello,
I am a new user of JAXB. And I have a problem for one week.
At fisrt, I execute jaxb with command line:
"/java/jwsdp-1.3/jaxb/bin/xjc.sh -p test.jaxb books.xsd -d Lundi"
(books.xsd is the example of JAXB)
It works perfectly after copy all endorsed files.
Then I have tried to use eclipse and to make the same command line with a build.xml file. It does'nt work.
I have tried again to make it with command line"/java/jwsdp-1.3/jaxb/bin/xjc.sh -p test.jaxb books.xsd -d Lundi"
And now it doesn't work too. It is strange because I didn't touch any jaxb file.
Errors was:
"[WARNING] Unable to validate your schema. Most likely, the JVM has loaded an incompatible XML parser implementations.."
So I 've understood I need ti copy xercesImpl.jar from jwsdp-1.3/jaxp/lib/endorsed to $JAVA_HOME/jre/lib/endorsed
But now I have a new problem:
==============================
[flefevre@mars flefevre]$ /java/jwsdp-1.3/jaxb/bin/xjc.sh -p test.jaxb JAXB/books.xsd -d JAXB/Lundi
parsing a schema...
compiling a schema...
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.commons.launcher.ChildMain.run(ChildMain.java:269)
Caused by: java.lang.NullPointerException
at com.sun.tools.xjc.generator.SkeletonGenerator.generateStaticRuntime(SkeletonGenerator.java:233)
at com.sun.tools.xjc.generator.SkeletonGenerator.<init>(SkeletonGenerator.java:128)
at com.sun.tools.xjc.generator.SkeletonGenerator.generate(SkeletonGenerator.java:108)
at com.sun.tools.xjc.Driver.generateCode(Driver.java:366)
at com.sun.tools.xjc.Driver.run(Driver.java:215)
at com.sun.tools.xjc.Driver._main(Driver.java:80)
at com.sun.tools.xjc.Driver.access$000(Driver.java:46)
at com.sun.tools.xjc.Driver$1.run(Driver.java:60)
=========================================
So I have tried to do make it directly with the jar file:
$ java -jar $JAXB_HOME/lib/jaxb-xjc.jar ./JAXB/books.xsd
It parse the schema but noway to compile it.
================
parsing a schema...
compiling a schema...
Exception in thread "main" java.lang.NullPointerException
at com.sun.tools.xjc.generator.SkeletonGenerator.generateStaticRuntime(SkeletonGenerator.java:233)
at com.sun.tools.xjc.generator.SkeletonGenerator.<init>(SkeletonGenerator.java:128)
at com.sun.tools.xjc.generator.SkeletonGenerator.generate(SkeletonGenerator.java:108)
at com.sun.tools.xjc.Driver.generateCode(Driver.java:366)
at com.sun.tools.xjc.Driver.run(Driver.java:215)
at com.sun.tools.xjc.Driver._main(Driver.java:80)
at com.sun.tools.xjc.Driver.access$000(Driver.java:46)
at com.sun.tools.xjc.Driver$1.run(Driver.java:60)
===============================
echo $CLASSPATH
echo $JAVA_HOME
/usr/java/j2sdk1.4.2_04
echo $JAXB_HOME
/java/jwsdp-1.3/jaxb
Do you have any idea? What do I need to do?
Thanks a lot for your help
Francois from Paris in France.

Answer 1

Hey,
At fisrt thanks you to be still there.
So I am sorry I don't understand what you tell me.
I give you at this end my build file.
I can't run Ant with eclipse because it tell me that "taskdef A class needed by class "com.sun.tools.xjc.XJCTask" cannot be found: org/apache/tools/ant/Task
So when I open External tools (run>external tools), I have
Ant buildMain>buildfile = ${workspace_loc:/Jaxp_Build/build.xml}
Main> base directory = nothing
Main>arguments= nothing
Refresh = no available
Target = no target
ClassPath>ANT_HOME (default) = many .jar , with ant.jar but no optional.jar ( path= /user/local/eclipse/plugins/org.apache.ant_1.6.1/ant.jar
When you told me to setup JAVA_HOME and JAXB_HOME in you environmental variables, it is not in the build.xml. But with export JAVA_HOME=...
If it is the case, I have already done it in my .bashrc.
I am totaly lost. Could we restart the discussion?
I will reinstall jwsdp and eclipse in windows xp and linux.
what do I have to extra configure?
then I will use your build.xml
Thanks again
Francois
[email protected]
build.xml
================
<?xml version="1.0" encoding="ISO-8859-1" ?>
<project basedir="." name="Test_JAXB" default="all">
<description>
Gion de JAXB books
</description>
<property name="projet" location="/home/flefevre/Projets/workspace/Jaxp_Build"/>
<property name="bin" location="${projet}/bin"/>
<property name="src" location="${projet}/src"/>
<!--property name="data" location="${projet}/data"/-->
<path id="classpath_jaxb">
     <pathelement location="."/>
     <fileset dir="/java/jwsdp-1.3/jaxb/lib" includes="*.jar"/>
     <fileset dir="/java/jwsdp-1.3">
          <include name="jaxp/**/*.jar"/>
          <include name="jaxp/lib/endorsed/xercesImpl.jar"/>
          <include name="jwsdp-shared/lib/**/*.jar"/>
     </fileset>
</path>
<taskdef name="xjc" classname="com.sun.tools.xjc.XJCTask">
     <classpath refid="classpath_jaxb" />     
</taskdef>
<target name="jaxb" description="Generate JAXB classes" >
     <!-- generate the Java content classes from the schema -->
     <echo message="Compiling the schema..."/>
     <property name="build.src" value="." />
     <xjc schema="books.xsd" target="${build}" package="org.test.jaxb"/>
</target>
<target name="init" description="Initialisation">
<tstamp/>
<buildnumber file="numerobuild.txt" />
<echo message="Generation numero : ${build.number} du ${TODAY}"/>
</target>
<target name="compil" depends="init" description="Compilation">
<javac srcdir="${src}" destdir="${bin}">
     <classpath refid="classpath.base"/>
</javac>
</target>
<target name="all" depends="init, jaxb, compil" description="Generation complete">
<echo message="Generation complete."/>
</target>
</project>