commons-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From joern turner <joern.tur...@web.de>
Subject Re: [jxpath] using the last() function? (repost)
Date Sat, 17 Jan 2004 11:33:54 GMT
Dmitri Plotnikov wrote:
> Joern,
> 
> The last() function is now fixed.
thanks so much. i tried to debug it myself but got lost in the contexts ;)

Joern
> 
> - Dmitri
> 
> ----- Original Message ----- 
> From: "joern turner" <joern.turner@web.de>
> To: "Jakarta Commons Users List" <commons-user@jakarta.apache.org>
> Sent: Sunday, January 04, 2004 7:02 PM
> Subject: [jxpath] using the last() function? (repost)
> 
> 
> 
>>Hello,
>>
>>first of all, thanks for this great piece of code - its a vital part of
>>our own open-source project.
>>
>>but i have a problem using the last() function in jxpath. i'm using the
>>following xml:
>>
>><instance>
>>   <my:order my:money="4711">
>>     <my:item my:money="50">
>>       <my:amount>500</my:amount>
>>       <my:discount>100</my:discount>
>>     </my:item>
>>     <my:item my:money="4711">
>>       <my:amount>77</my:amount>
>>       <my:discount>77</my:discount>
>>     </my:item>
>>   </my:order>
>></instance>
>>
>>i'm trying to get the last element of a nodeset like this:
>>
>>JXPathContext context = JXPathContext.newContext(doc);
>>
>>Pointer pointer1 = context.getPointer("//my:order/my:item[2]");
>>
> 
> assertTrue(pointer1.asPath().equals("/instance[1]/my:order[1]/my:item[2]"));
> 
>>works ok.
>>
>>Pointer pointer2
>>   =context.getPointer("//my:order/my:item[position()=count(../*)]");
>>
> 
> assertTrue(pointer2.asPath().equals("/instance[1]/my:order[1]/my:item[2]"));
> 
>>works ok.
>>
>>Pointer pointer3 =
>>   context.getPointer("//my:order/my:item[position()=2]");
>>
> 
> assertTrue(pointer3.asPath().equals("/instance[1]/my:order[1]/my:item[2]"));
> 
>>works ok.
>>
>>Pointer pointer4 = context.getPointer("//my:order/my:item[last()]");
>>
> 
> assertTrue(pointer4.asPath().equals("/instance[1]/my:order[1]/my:item[2]"));
> 
>>fails with stacktrace. what am i doing wrong? please help. i've
>>investigated the problem but cannot find a way to get it working.
>>
>>any help appreaciated.
>>
>>Joern
>>
>>
> 
> testLast(org.chiba.xml.xforms.xpath.test.JXPathTest)java.lang.NullPointerExc
> eption
> 
>>     at
>>
> 
> org.apache.commons.jxpath.ri.model.dom.DOMNodeIterator.previous(DOMNodeItera
> tor.java:131)
> 
>>     at
>>
> 
> org.apache.commons.jxpath.ri.model.dom.DOMNodeIterator.setPosition(DOMNodeIt
> erator.java:121)
> 
>>     at
>>
> 
> org.apache.commons.jxpath.ri.axes.ChildContext.setPosition(ChildContext.java
> :152)
> 
>>     at
>>
> 
> org.apache.commons.jxpath.ri.compiler.CoreFunction.functionLast(CoreFunction
> .java:335)
> 
>>     at
>>
> 
> org.apache.commons.jxpath.ri.compiler.CoreFunction.computeValue(CoreFunction
> .java:259)
> 
>>     at
>>
> 
> org.apache.commons.jxpath.ri.axes.PredicateContext.nextNode(PredicateContext
> .java:127)
> 
>>     at
>>
> 
> org.apache.commons.jxpath.ri.EvalContext.getSingleNodePointer(EvalContext.ja
> va:333)
> 
>>     at
>>org.apache.commons.jxpath.ri.compiler.Path.searchForPath(Path.java:211)
>>     at
>>
> 
> org.apache.commons.jxpath.ri.compiler.Path.getSingleNodePointerForSteps(Path
> .java:192)
> 
>>     at
>>
> 
> org.apache.commons.jxpath.ri.compiler.LocationPath.computeValue(LocationPath
> .java:128)
> 
>>     at
>>
> 
> org.apache.commons.jxpath.ri.JXPathContextReferenceImpl.getPointer(JXPathCon
> textReferenceImpl.java:366)
> 
>>     at
>>
> 
> org.apache.commons.jxpath.ri.JXPathContextReferenceImpl.getPointer(JXPathCon
> textReferenceImpl.java:362)
> 
>>     at
>>org.chiba.xml.xforms.xpath.test.JXPathTest.testLast(JXPathTest.java:162)
>>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>     at
>>
> 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39
> )
> 
>>     at
>>
> 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
> .java:25)
> 
>>     at
>>
> 
> com.intellij.rt.execution.junit.TextTestRunner.main(TextTestRunner.java:12)
> 
>>
>>
>>
>>
>>
>>---------------------------------------------------------------------
>>To unsubscribe, e-mail: commons-user-unsubscribe@jakarta.apache.org
>>For additional commands, e-mail: commons-user-help@jakarta.apache.org
>>
>>
>>
>>
> 
> 
> 
> 
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: commons-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: commons-user-help@jakarta.apache.org
> 
> 



---------------------------------------------------------------------
To unsubscribe, e-mail: commons-user-unsubscribe@jakarta.apache.org
For additional commands, e-mail: commons-user-help@jakarta.apache.org


Mime
View raw message