Hi,
I want to configure my Thread Properties through XML file, but every time
Jmeter throwing me error " XPathFileContainer has no nodes:
D:/apache-jmeter-2.6/apache-jmeter-2.6/bin/LSMSXML/LSMSparams.xml
//project/thread[@name='PeopleTab']/rampuptime[@name='rampuptime']/@value "
even though node is there.
Below is my XML file:
<?xml version="1.0"?>
<project name="LSMS">
<thread name="DataBaseTestData" value="2">
<rampuptime name="rampuptime" value="150"/>
<holdload name="holdload" value="3600"/>
</thread>
<thread name="PeopleTab" value="1">
<rampuptime name="rampuptime" value="150"/>
<holdload name="holdload" value="3600"/>
</thread>
</project>
Thanks in Advance!
sebb-2-2 wrote:
>
> On 04/09/07, Florent Georges <[email protected]> wrote:
>> sebb wrote:
>>
>> > On 04/09/07, Florent Georges wrote:
>>
>> > > bindings:
>> > > u1=uri 1
>> > > u2=uri 2
>>
>> > > expression:
>> > > /u1:elem1/u2:elem2
>>
>> > > to get the deepest element.
>>
>> > OK, I now understand that XPath requires that the
>> > namespace must be (unambiguously) pre-defined; this is not
>> > possible when the namespace is declared on a child
>> > element.
>>
>> What child element? I speak about an XPath expression and
>> the associated set of namespace bindings. Input documents
>> are not relevant here.
>
> I was referring to the input document, see below.
>
>> > > http://xml.apache.org/xalan-j/xpath_apis.html#namespacecontext
>>
>> > I've had a look at that, but it is a bad example: it is
>> > actually not necessary to do any binding in that
>> > case.
>>
>> ? Of course it is necessary. You use the prefixes foo
>> and bar. They have to be bound in one way or another.
>
> See below.
>
>> > This can be seen by using the ApplyXPathDOM or ApplyXPath
>> > command-line tests - they work fine.
>>
>> Yes. Because it sets the right bindings when it calls
>> selectNodeIterator(). This method takes its binding from
>> the context node passed at its first parameter. In the case
>> of ApplyXPath that it the root element of the file (where
>> the bindings are declared).
>
> OK, now I understand.
>
> I had not realised that the binding was done that way; it seemed to be
> automatic in the document processing.
>
> The JMeter code uses XPathAPI.eval(doc, query).
>
> I just checked the Javadoc
>
> http://xml.apache.org/xalan-j/apidocs/org/apache/xpath/XPathAPI.html#eval(org.w3c.dom.Node,%20java.lang.String)
>
> Which says: "... Using this method, XPath namespace prefixes will be
> resolved from the namespaceNode".
>
> However, there is no such parameter.
>
> Further digging shows that what the code actually does is to use the
> contextNode as the namespaceNode.
>
>> > Also, there has to be a nicer way to declare namespaces -
>> > the example suggests that it is necessary to create ones
>> > own (hard-coded) classes. Surely there is a utility class
>> > to do this?
>>
>> I don't see the problem. You put a two-column table in
>> the GUI, allowing the user to edit the various bindings (on
>> the left the prefix, on the right the associated URI).
>
> That part is fine.
>
>> Then you use something like the following:
>>
>> public class JMeterNamespaceContext
>> implements NamespaceContext
>> {
>> // Bindings: keys=prefixes, values=uris
>> public JMeterNamespaceContext(Map<String, String> bindings)
>> {
>> myPrefixToURI = bindings;
>> }
>>
>> public String getNamespaceURI(String prefix)
>> {
>> return myBindings.get(prefix);
>> }
>>
>> public String getPrefix(String uri)
>> {
>> List<String> prefixes = getURIToPrefix().get(uri);
>> if ( prefixes == null ) {
>> return null;
>> }
>> else {
>> return prefixes.get(0);
>> }
>> }
>>
>> public Iterator getPrefixes(String uri)
>> {
>> List<String> prefixes = getURIToPrefix().get(uri);
>> if ( prefixes == null ) {
>> return null;
>> }
>> else {
>> return prefixes.iterator();
>> }
>> }
>>
>> private Map<String, List<String>> getURIToPrefix()
>> {
>> if ( myURIToPrefix == null ) {
>> myURIToPrefix = new HashMap<String, List<String>>();
>> for ( String p : bindings.keySet() ) {
>> List<String> prefixes = myURIToPrefix.get(p);
>> if ( prefixes == null ) {
>> prefixes = new ArrayList();
>> myURIToPrefix.put(p, prefixes);
>> }
>> prefixes.add(bindings.get(p));
>> }
>> }
>> else {
>> return myURIToPrefix;
>> }
>> }
>>
>> private Map<String, String> myPrefixToURI = null;
>> private Map<String, List<String>> myURIToPrefix = null;
>> }
>>
>
> What I was getting at is that the above code could (*should*) be
> provided as utility ...
>
>> This is not tested and you should refer to the javadoc of
>
> ... and then it would only have to be tested once ...
>
>> NamespaceContext to see what changes to do to enforce its
>> contract, but the (simple) idea is there, IMHO.
>>
>> Did I miss something?
>
> No, I think it's mainly my misconceptions ...
>
>> Regards,
>
> Thanks for the help and information; I think I understand a lot more
> about this now.
>
>
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