Re: [Xdoclet-user] How do I use XJavaDocTask?

Clifton C. Craig Mon, 22 Mar 2004 06:13:47 -0800

I'm including snippets below. What I don't understand is why it appears like taskdef only loads classes that are located int the same jar. I mean, My XJavadocUpdate task is loaded out of a jar named icstask.jar located under ant/lib. (The last sentence just gave me a clue but let me finish typing 1st.) It directly references classes found in the xjavadoc.jar under XDOCLET_HOME. Ok, so now I think I understand my problem. It's that weird ant/lib classloading issue. Since my classes are loaded into the Ant lib classloader's classpath it gets 1st crack at loading my tasks. This class loader knows nothing about the extra classpath info under the taskdef element. Now the taskdef element does dynamic classloading (I assume with it's own CLASSLOADER assembled with the given path info) to find the requested task. It delegates to the ant lib classloader which coughs when it sees my class but not the xjavadoc.jar classes. This is now starting to make sense to me. I knew I just needed to talk it out with someone intelligent. So Now I believe my issue is related to storing my custom task jar under ant/lib. Sounds like a highly suspect cause. Could you please look over what I've already included below to see if this is the likely problem?

This is a snippet from my custom task. Like I said it imports and uses XJavadoc classes directly: import xjavadoc.ant.XJavadocTask; //other imports... /** * Created by IntelliJ IDEA. * User: CliftonCraig * Date: Mar 18, 2004 * Time: 4:19:18 PM * To change this template use Options | File Templates. */ public class XJavaDocUpdate extends XJavadocTask { //Task logic }

This is my build file: <?xml version="1.0"?> <project default="test" basedir="." name="Test"> <description> This is a test script for experimental use. </description>    <property name="project.base" location="../../"/>

<target name="init" unless="init.already.called"> <property name="init.already.called" value="true"/> <property name="base.ant.folder" value="apache-ant-1.6.0"/> <property name="tools.dir" location="${project.base}/tools"/> <property name="xdoclet.base.folder" value="xdoclet-1.2"/> <property name="xdoclet.home" location="${tools.dir}/${xdoclet.base.folder}"/> <path id="xdoclet.jars"> <fileset dir="${xdoclet.home}" includes="*.jar"/> </path> <property name="xdoc.jars.prop" refid="xdoclet.jars"/> <echo>XDoclet Jars prop= ${xdoc.jars.prop}</echo> <taskdef resource="com/icsaward/award/ant/tasks/taskdef.properties"> <classpath> <pathelement location="${project.base}/tools/${base.ant.folder}/lib/icstasks.jar"/> <path refid="xdoclet.jars"/> </classpath> </taskdef> </target>

<target name="test" depends="init"> <typedef name="ejbfilter" classname="xjavadoc.ant.XJavadocFilter" classpathref="xdoclet.jars"/> <xjavadocupdate destdir="d:/misc" failonerror="no" deploydesc="ejb-jar.xml,jonas-ejb-jar.xml"> <fileset dir="${src.dir}" includes="${neware.path}/server/sb/em/address/*.java"> <or> <ejbfilter> <parameter name="implements" value="javax.ejb.EntityBean"/> </ejbfilter> <ejbfilter> <parameter name="implements" value="javax.ejb.SessionBean"/> </ejbfilter> </or> </fileset> </xjavadocupdate> </target>

</project>

Here's what the build output looks like: D:\scm\build.bat -f D:\scm\tools\scripts\test.xml -v Your environment is now configured for apache-ant-1.6.0. Using classpath: "" Apache Ant version 1.6.0 compiled on December 18 2003 Buildfile: D:\scm\tools\scripts\test.xml Detected Java version: 1.4 in: D:\j2sdk1.4.2\jre Detected OS: Windows XP parsing buildfile D:\scm\tools\scripts\test.xml with URI = file:///D:/scm/tools/scripts/test.xml Project base dir set to: D:\scm\tools\scripts Build sequence for target `test' is [init, test] Complete build sequence is [init, test, ]

init: XDoclet Jars prop= D:\scm\tools\xdoclet-1.2\commons-collections-2.0.jar;D:\scm\tools\xdoclet-1.2\commons-logging.jar;D:\scm\tools\xdoclet-1.2\log4j.jar;D:\scm\tools\xdoclet-1.2\maven-xdoclet-plugin-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-apache-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-bea-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-borland-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-caucho-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-de-locale-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-ejb-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-exolab-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-fr_FR-locale-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-hibernate-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-hp-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-ibm-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-java-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-jboss-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-jdo-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-jmx-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-libelis-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-macromedia-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-mockobjects-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-mvcsoft-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-mx4j-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-objectweb-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-oracle-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-orion-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-portlet-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-pramati-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-pt_BR-locale-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-solarmetric-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-sun-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-sybase-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-tjdo-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-web-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-webwork-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xdoclet-xdoclet-module-1.2.jar;D:\scm\tools\xdoclet-1.2\xjavadoc-1.0.2.jar

BUILD FAILED D:\scm\tools\scripts\test.xml:24: taskdef A class needed by class com.icsaward.award.ant.tasks.XJavaDocUpdate cannot be found: xjavadoc/ant/XJavadocTask at org.apache.tools.ant.taskdefs.Definer.addDefinition(Definer.java:501) at org.apache.tools.ant.taskdefs.Definer.loadProperties(Definer.java:318) at org.apache.tools.ant.taskdefs.Definer.execute(Definer.java:251) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:306) at org.apache.tools.ant.Task.perform(Task.java:401) at org.apache.tools.ant.Target.execute(Target.java:338) at org.apache.tools.ant.Target.performTasks(Target.java:365) at org.apache.tools.ant.Project.executeTarget(Project.java:1237) at org.apache.tools.ant.Project.executeTargets(Project.java:1094) at org.apache.tools.ant.Main.runBuild(Main.java:669) at org.apache.tools.ant.Main.startAnt(Main.java:220) at org.apache.tools.ant.launch.Launcher.run(Launcher.java:215) at org.apache.tools.ant.launch.Launcher.main(Launcher.java:90) Caused by: java.lang.NoClassDefFoundError: xjavadoc/ant/XJavadocTask at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:537) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123) at java.net.URLClassLoader.defineClass(URLClassLoader.java:251) at java.net.URLClassLoader.access$100(URLClassLoader.java:55) at java.net.URLClassLoader$1.run(URLClassLoader.java:194) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:187) at java.lang.ClassLoader.loadClass(ClassLoader.java:289) at java.lang.ClassLoader.loadClass(ClassLoader.java:235) at org.apache.tools.ant.AntClassLoader.findBaseClass(AntClassLoader.java:1218) at org.apache.tools.ant.AntClassLoader.loadClass(AntClassLoader.java:994) at java.lang.ClassLoader.loadClass(ClassLoader.java:235) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:219) at org.apache.tools.ant.taskdefs.Definer.addDefinition(Definer.java:471) ... 12 more

Clifton C. Craig, Software Engineer
Intelligent Computer Systems -  A Division of GBG
2101 Embassy Drive
Lancaster, PA  17603

Phone: 717-295-7977 ext. 621 Fax: 717-295-7683 [EMAIL PROTECTED] [EMAIL PROTECTED]

Konstantin Priblouda wrote:

--- "Clifton C. Craig" <[EMAIL PROTECTED]> wrote:

Hello,

I've been trying to use the XJavadoc task shipped in the xjavadoc jar with XDoclet via one of my custom tasks. This may sound like more of an Ant question but I'm sure there's an expert out there that can help me. What I'm doing is defining a custom task as an extension of the XJavadocTask. I then compile and jar this extension and define it via a taskdef element in my build. The taskdef element includes a classpath which references my custom tasks jar and the xjavadoc jar. When I run my build Ant complains that it cannot find the xjavadoc classes that my custom task directly reference. So now I say, "what's the deal?" Do I have to jar my classes in the SAME jar as XJavadoc and point the taskdef to this jar? It works if I copy the xjavadoc jar into the ant/lib folder but I thought I read some where that you shouldn't place XDoclet jars under ant/lib. I couldn't just copy that one jar there and live with it. I'd have to copy everything from XDoclet if only for the consistency of my app. Can someone tell me how you're supposed to use this stuff?
putting jars into ants lib directory is a big no no. (
unless you are calling for trouble and obscure
classloading problems )
can you show your build.xml ? errors?

regards,

===== ----[ Konstantin Pribluda ( ko5tik ) ]---------------- Zu Verst�rkung meines Teams suche ich ab Sofort einen Softwareentwickler[In] f�r die Festanstellung. Arbeitsort: Mainz Skills: Programieren, Kentnisse in OpenSource-Bereich ----[ http://www.pribluda.de ]------------------------
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Re: [Xdoclet-user] How do I use XJavaDocTask?

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