Hello,
I need to filter the response of a SOAP web-service. Since SOAP is based on
XML, I am thinking about using libxml2, but I am not able to understand how to
write an XPATH rule to achieve the desired result.
At the end of the message you'll find an example of the response, where two
NotficationMessages are sent, one has a topic
tns1:RuleEngine/LineDetector/Crossed , the other one has topic
tns1:RuleEngine/CellMotionDetector/Motion .
I am trying to write the following XPATH expressions:
* match any NotficationMessage whose topic is
tns1:RuleEngine/LineDetector/Crossed
* match any NotficationMessage whose topic is tns1:RuleEngine//.
* match any NotficationMessage whose topic is everything but
tns1:RuleEngine//.
All the examples I found match on tag attributes, not the inhalt of subtags.
So I'm asking.
1) are this kinds of matching doable with libxml2?
2) can you please give me a hint about writing the XPATH expressions?
Thank you for your help
Ottavio
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
xmlns:SOAP-ENV="http://www.w3.org/2003/05/soap-envelope";
xmlns:wsa="http://www.w3.org/2005/08/addressing";
xmlns:wstop="http://docs.oasis-open.org/wsn/t-1";
xmlns:wsnt="http://docs.oasis-open.org/wsn/b-2";
xmlns:tet="http://www.onvif.org/ver10/events/wsdl";
xmlns:tns1="http://www.onvif.org/ver10/topics";
xmlns:tt="http://www.onvif.org/ver10/schema";>
<SOAP-ENV:Header>
<wsa:Action>
http://www.onvif.org/ver10/events/wsdl/PullPointSubscription/PullMessagesResponse
</wsa:Action>
</SOAP-ENV:Header>
<SOAP-ENV:Body>
<tet:PullMessagesResponse>
<tet:CurrentTime>
2008-10-10T12:24:58
</tet:CurrentTime>
<tet:TerminationTime>
2008-10-10T12:25:58
</tet:TerminationTime>
<wsnt:NotificationMessage>
<wsnt:Topic
Dialect="http://www.onvif.org/ver10/tev/topicExpression/ConcreteSet";>
tns1:RuleEngine/LineDetector/Crossed
</wsnt:Topic>
<wsnt:Message>
<tt:Message UtcTime="2008-10-10T12:24:57.321Z">
<tt:Source>
<tt:SimpleItem Name="VideoSourceConfigurationToken"
Value="1"/>
<tt:SimpleItem Name="VideoAnalyticsConfigurationToken"
Value="2"/>
<tt:SimpleItem Value="MyImportantFence1" Name="Rule"/>
</tt:Source>
<tt:Data>
<tt:SimpleItem Name="ObjectId" Value="15" />
</tt:Data>
</tt:Message>
</wsnt:Message>
</wsnt:NotificationMessage>
<wsnt:NotficationMessage>
<wsnt:Topic
Dialect="http://www.onvif.org/ver10/tev/topicExpression/ConcreteSet";>
tns1:RuleEngine/CellMotionDetector/Motion
</wsnt:Topic>
<wsnt:Message>
<tt:Message UtcTime= "2010-10-20T12:24:57.628">
<tt:Source>
<tt:SimpleItem Name="VideoSourceConfigurationToken" Value="1"/>
<tt:SimpleItem Name="VideoAnalyticsConfigurationToken"
Value="1"/>
<tt:SimpleItem Name="Rule" Value="MotionInDefinedCells"/>
</tt:Source>
<tt:Data>
<tt:SimpleItem Name="IsMotion" Value="true"/>
</tt:Data>
</tt:Message>
</wsnt:Message>
</wsnt:NotficationMessage>
</tet:PullMessagesResponse>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
_______________________________________________
xml mailing list, project page http://xmlsoft.org/
xml@gnome.org
https://mail.gnome.org/mailman/listinfo/xml
