Re: [Xmltask-users] NullPointerException at XmlReplacement.java:65
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Re: [Xmltask-users] NullPointerException at XmlReplacement.java:65
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From: Brian A. <br...@oo...> - 2005-08-09 22:27:50
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If you've got:
<project default="test">
<taskdef name="xmltask"
classname="com.oopsconsultancy.xmltask.ant.XmlTask"
classpath="xmltask-v1.11.jar"/>
<target name="test">
<xmltask source="test.xml">
<call path="/root/element" target="target" buffer="buffer"/>
</xmltask>
</target>
<target name="target">
<xmltask> <!-- this should be fine, btw -->
<print buffer="buffer"/>
</xmltask>
</target>
</project>
(i.e. your original build.xml), then the print will give you
"<element/>". At least it does for me. Ant 1.6.x, JDK 1.4.x.
Given the above and a test.xml of:
<?xml version="1.0" encoding="UTF-8"?>
<root>
<element/>
</root>
are you getting something different ?
Brian
Michał Tkacz wrote:
> Thanks for the quick answer and for the fix. Unfortunately, although
> the exception is no longer thrown, the output is still wrong.
>
> If I leave my target unmodified (let me know if this is supposed to
> work):
>
> <target name="target">
> <xmltask>
> <print buffer="buffer"/>
> </xmltask>
> </target>
>
> I get this:
>
> [xmltask] Applying CallAction(target) to /root/element
> [xmltask] Calling target target for [element: null] (in buffer buffer
> [xmltask] Storing [element: null] against buffer (buffer)
>
> and then this:
>
> [xmltask] Processing [no output document]
> [xmltask] Applying com.oopsconsultancy.xmltask.PrintAction@13bad12
> [xmltask] Couldn't find any entries for buffer 'buffer'
> [xmltask] Applied com.oopsconsultancy.xmltask.PrintAction@13bad12
> [xmltask] Exiting C:\xmltask\build.xml.
> [xmltask] Applied CallAction(target) - 1 match(es)
>
> If I modify my target as suggested by David:
>
> <target name="target">
> <xmltask sourcebuffer="buffer">
> <print path="."/>
> </xmltask>
> </target>
>
> I get this:
>
> [xmltask] Applying CallAction(target) to /root/element
> [xmltask] Calling target target for [element: null] (in buffer buffer
> [xmltask] Storing [element: null] against buffer (buffer)
>
> and then this:
>
> [xmltask] Processing buffer [no output document]
> [xmltask] Applying com.oopsconsultancy.xmltask.PrintAction@df8ff1 to .
> [xmltask] { node output
> [xmltask] } node output
> [xmltask] Applied com.oopsconsultancy.xmltask.PrintAction@df8ff1 - 1
> match(es)
>
> [xmltask] Exiting C:\xmltask\build.xml.
> [xmltask] Applied CallAction(target) - 1 match(es)
>
> (the buffer is empty). If I change '.' to '*' or 'text()', the print
> action fails to match.
>
> Michal
>
> Brian Agnew napisał(a):
>
>> Yup. It's failing (and shouldn't do) since the second xmltask has no
>> input and no output, but is still trying to normalise() it's
>> resultant document (which of course it doesn't have).
>>
>> I'm just preparing a quick fix/test and I'll mail that out to you soon.
>>
>> Karr, David wrote:
>>
>>> I don't know why this is failing, but it might be worth trying to
>>> change
>>> the second xmltask to have a "sourcebuffer" attribute of "buffer", and
>>> then change your "print" element to just specify 'path="."'.
>>>
>>>
>>>
>>>> -----Original Message-----
>>>> From: xml...@li...
>>>> [mailto:xml...@li...] On Behalf Of
>>>> Michal Tkacz
>>>> Sent: Monday, August 08, 2005 1:59 PM
>>>> To: xml...@li...
>>>> Subject: [Xmltask-users] NullPointerException at
>>>> XmlReplacement.java:65
>>>>
>>>>
>>>> Hi,
>>>>
>>>> I'm getting a NullPointerException when using <call>. It seems that
>>>> my (fairly simple) xpath does not evaluate to what I would expect.
>>>> I saw two posts in this group that describe exactly the same
>>>> exception, which however couldn't be reproduced. Here is my case:
>>>>
>>>> I'm using xmltask 1.11, Ant 1.6.5 and Java 1.5.0_02 on Windows XP.
>>>>
>>>> build.xml:
>>>>
>>>> <project default="test">
>>>> <taskdef name="xmltask"
>>>> classname="com.oopsconsultancy.xmltask.ant.XmlTask"
>>>> classpath="xmltask-v1.11.jar"/>
>>>>
>>>> <target name="test">
>>>> <xmltask source="test.xml">
>>>> <call path="/root/element" target="target"
>>>> buffer="buffer"/>
>>>> </xmltask>
>>>> </target>
>>>> <target name="target">
>>>> <xmltask>
>>>> <print buffer="buffer"/>
>>>> </xmltask>
>>>> </target>
>>>> </project>
>>>>
>>>> test.xml:
>>>>
>>>> <?xml version="1.0" encoding="UTF-8"?>
>>>> <root>
>>>> <element/>
>>>> </root>
>>>>
>>>> output:
>>>>
>>>> C:\xmltask>ant -verbose
>>>> Apache Ant version 1.6.5 compiled on June 2 2005
>>>> Buildfile: build.xml
>>>> Detected Java version: 1.5 in: c:\Program
>>>> Files\Java\jdk1.5.0_02\jre Detected OS: Windows XP parsing
>>>> buildfile C:\xmltask\build.xml with URI = file:///C:/xmltask/build.xml
>>>> Project base dir set to: C:\xmltask
>>>> Build sequence for target(s) `test' is [test]
>>>> Complete build sequence is [test, target, ]
>>>>
>>>> test:
>>>> [xmltask] Reading C:\xmltask\test.xml
>>>> [xmltask] Executing xmltask 1.11
>>>> [xmltask] Processing C:\xmltask\test.xml [no output document]
>>>> [xmltask] Using predefined xml catalog
>>>> [xmltask] Applying CallAction(target) to /root/element
>>>> [xmltask] Calling target target for [element: null] (in buffer buffer
>>>> [xmltask] Storing [element: null] against buffer (buffer)
>>>>
>>>> Project base dir set to: C:\xmltask
>>>> [xmltask] calling target(s) [target] in build file
>>>> C:\xmltask\build.xml parsing buildfile C:\xmltask\build.xml with
>>>> URI = file:///C:/xmltask/build.xml
>>>> Project base dir set to: C:\xmltask
>>>> Trying to override old definition of task xmltask
>>>> Build sequence for target(s) `target' is [target]
>>>> Complete build sequence is [target, test, ]
>>>> [xmltask] Entering C:\xmltask\build.xml...
>>>> Build sequence for target(s) `target' is [target]
>>>> Complete build sequence is [target, test, ]
>>>>
>>>> target:
>>>> [xmltask] Executing xmltask 1.11
>>>> [xmltask] Processing [no output document]
>>>> [xmltask] Applying com.oopsconsultancy.xmltask.PrintAction@13bad12
>>>> [xmltask] Couldn't find any entries for buffer 'buffer'
>>>> [xmltask] Applied com.oopsconsultancy.xmltask.PrintAction@13bad12
>>>> [xmltask] java.lang.NullPointerException
>>>> [xmltask] at
>>>> com.oopsconsultancy.xmltask.XmlReplacement.apply(XmlReplacemen
>>>> t.java:65)
>>>> [xmltask] at
>>>> com.oopsconsultancy.xmltask.ant.XmlTask.processDoc(XmlTask.java:674)
>>>> [xmltask] at
>>>> com.oopsconsultancy.xmltask.ant.XmlTask.execute(XmlTask.java:643)
>>>> [xmltask] at
>>>> org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
>>>> [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.helper.SingleCheckExecutor.executeTargets
>>>> (SingleCheckExecutor.java:37)
>>>> [xmltask] at
>>>> org.apache.tools.ant.Project.executeTargets(Project.java:1068)
>>>> [xmltask] at
>>>> org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:382)
>>>> [xmltask] at
>>>> com.oopsconsultancy.xmltask.CallAction.apply(CallAction.java:129)
>>>> [xmltask] at
>>>> com.oopsconsultancy.xmltask.XmlReplace.apply(XmlReplace.java:73)
>>>> [xmltask] at
>>>> com.oopsconsultancy.xmltask.XmlReplacement.apply(XmlReplacemen
>>>> t.java:60)
>>>> [xmltask] at
>>>> com.oopsconsultancy.xmltask.ant.XmlTask.processDoc(XmlTask.java:674)
>>>> [xmltask] at
>>>> com.oopsconsultancy.xmltask.ant.XmlTask.execute(XmlTask.java:643)
>>>> [xmltask] at
>>>> org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
>>>> [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(Def
>>>>
>>>
>>> aultExecutor.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] Exiting C:\xmltask\build.xml.
>>>> [xmltask] Applied CallAction(target) - 1 match(es)
>>>>
>>>> BUILD SUCCESSFUL
>>>> Total time: 0 seconds
>>>>
>>>>
>>>>
>>>> -------------------------------------------------------
>>>> SF.Net email is Sponsored by the Better Software Conference & EXPO
>>>> September 19-22, 2005 * San Francisco, CA * Development Lifecycle
>>>> Practices Agile & Plan-Driven Development * Managing Projects &
>>>> Teams * Testing & QA Security * Process Improvement & Measurement *
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>>>> _______________________________________________
>>>> Xmltask-users mailing list
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>>>> https://lists.sourceforge.net/lists/listinfo/xmltask-users
>>>>
>>>>
>>>
>>>
>>>
>>> -------------------------------------------------------
>>> SF.Net email is Sponsored by the Better Software Conference & EXPO
>>> September 19-22, 2005 * San Francisco, CA * Development Lifecycle
>>> Practices
>>> Agile & Plan-Driven Development * Managing Projects & Teams *
>>> Testing & QA
>>> Security * Process Improvement & Measurement *
>>> http://www.sqe.com/bsce5sf
>>> _______________________________________________
>>> Xmltask-users mailing list
>>> Xml...@li...
>>> https://lists.sourceforge.net/lists/listinfo/xmltask-users
>>>
>>>
>>>
>>
>> --
>> Brian Agnew http://www.oopsconsultancy.com
>> OOPS Consultancy Ltd brian @ oopsconsultancy.com
>> Tel: +44 (0)7720 397526
>> Fax: +44 (0)20 8682 0012
>>
>
--
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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