Re: Issue with running target twice

No particular thoughts spring to mind. Can you forward me a minimal copy 
of the build.xml and log4j.xml that exhibits the problem so I can run 
here and look at what's happening ?

You should be able to do the copy/attr step in one <xmltask> invocation, 
using a buffer, btw (you can't do it using properties for reasons you'll 
have discovered already).

Once I get a copy of the files I can investigate further. Which Ant/JDK 
are you using, btw ?

Brian

Rob Moore wrote:
> I'm trying to run 'ant build build' where build is a target that 
> performs an xmltask modification of a file. The first time the target 
> is invoked it performs fine. The second time it occurs it fails with 
> an exception:
>
>  [xmltask] Applying 
> AttrReplace(value=/home/rmoore/Development/workspace/foo/logs/foo.log, 
> remove=no) to 
> log4j:configuration/appender[@name='file']/param[@name='File']
>   [xmltask] javax.xml.transform.TransformerException: Prefix must 
> resolve to a namespace: log4j
>   [xmltask]     at 
> com.sun.org.apache.xpath.internal.compiler.XPathParser.error(XPathParser.java:602) 
>
>   [xmltask]     at 
> com.sun.org.apache.xpath.internal.compiler.Lexer.mapNSTokens(Lexer.java:638) 
>
>   [xmltask]     at 
> com.sun.org.apache.xpath.internal.compiler.Lexer.tokenize(Lexer.java:265)
>   [xmltask]     at 
> com.sun.org.apache.xpath.internal.compiler.Lexer.tokenize(Lexer.java:96)
>   [xmltask]     at 
> com.sun.org.apache.xpath.internal.compiler.XPathParser.initXPath(XPathParser.java:108) 
>
>   [xmltask]     at 
> com.sun.org.apache.xpath.internal.XPath.<init>(XPath.java:162)
>   [xmltask]     at 
> com.sun.org.apache.xpath.internal.XPathAPI.eval(XPathAPI.java:233)
>   [xmltask]     at 
> com.sun.org.apache.xpath.internal.XPathAPI.eval(XPathAPI.java:190)
>   [xmltask]     at 
> com.oopsconsultancy.xmltask.jdk15.XPathAnalyser15.analyse(XPathAnalyser15.java:28) 
>
>   [xmltask]     at 
> com.oopsconsultancy.xmltask.XmlReplace.apply(XmlReplace.java:67)
>   [xmltask]     at 
> com.oopsconsultancy.xmltask.XmlReplacement.apply(XmlReplacement.java:60)
>   [xmltask]     at 
> com.oopsconsultancy.xmltask.ant.XmlTask.processDoc(XmlTask.java:679)
>   [xmltask]     at 
> com.oopsconsultancy.xmltask.ant.XmlTask.execute(XmlTask.java:648)
>   [xmltask]     at org.apache.tools.ant.Task.perform(Task.java:364)
>   [xmltask]     at org.apache.tools.ant.Target.execute(Target.java:341)
>   [xmltask]     at 
> org.apache.tools.ant.Target.performTasks(Target.java:369)
>   [xmltask]     at 
> org.apache.tools.ant.Project.executeSortedTargets(Project.java:1216)
>   [xmltask]     at 
> org.apache.tools.ant.Project.executeTarget(Project.java:1185)  
> [xmltask]     at 
> org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:40) 
>
>   [xmltask]     at 
> org.apache.tools.ant.Project.executeTargets(Project.java:1068)
>   [xmltask]     at org.apache.tools.ant.Main.runBuild(Main.java:668)
>   [xmltask]     at org.apache.tools.ant.Main.startAnt(Main.java:187)
>   [xmltask]     at 
> org.apache.tools.ant.launch.Launcher.run(Launcher.java:246)
>   [xmltask]     at 
> org.apache.tools.ant.launch.Launcher.main(Launcher.java:67)
>   [xmltask] Indenting resultant document
>
> The file that is being parse is a static file and is not modified by 
> the   task -- rather the source file is used to create the target file 
> like so:
>
>   <taskdef name="xmltask" 
> classname="com.oopsconsultancy.xmltask.ant.XmlTask" 
> classpathref="master-classpath"/>
>   <xmltask source="${src.dir}/log4j.xml">
>             <xmlcatalog refid="dtds"/>
>             <copy 
> path="log4j:configuration/appender[@name='file']/param[@name='File']/@value" 
> attrValue="true" property="log.path.relative"/>
>   </xmltask>
>   <xmltask source="${src.dir}/log4j.xml" dest="${build.dir}/log4j.xml" 
> system="log4j.dtd">
>             <xmlcatalog refid="dtds"/>
>             <attr 
> path="log4j:configuration/appender[@name='file']/param[@name='File']" 
> attr="value" value="${basedir}/${log.path.relative}" />
> </xmltask>
>
> I cannot figure out why the second time it fails so I thought I'd ping 
> the list to see if anybody has a clue.
>
> Thanks,
>
> Rob
>
>
>
>
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--
Brian Agnew                  http://www.oopsconsultancy.com
OOPS Consultancy Ltd         brian @ oopsconsultancy.com
Tel: +44 (0)7720 397526
Fax: +44 (0)20 8682 0012




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that extends applications into web and mobile media. Attend the live webcast
and join the prime developer group breaking into this new coding territory!
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