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I've searched and tinkered around for hours in an effort to crack this one, but I'm still having problems. I have the XML data below:
<game id="2009/05/02/arimlb-milmlb-1" pk="244539"> <team id="109" name="Arizona" home_team="false"> <event number="9" inning="1" description="Felipe Lopez doubles to left fielder Chris Duffy. "/> <event number="15" inning="1" description="Augie Ojeda flies out to center fielder Mike Cameron. "/> <event number="23" inning="1" description="Chad Tracy doubles to right fielder Joe Sanchez. "/> <event number="52" inning="2" description="Mark Reynolds lines out to left fielder Chris Duffy. "/> <!-- more data here --> </team> </game> I'm trying to get the total number of event nodes that contain the text ' doubles ' in the value of the description attribute. This is what I've been trying so far, to no avail (irb throws an error):
"/game/team/event/@description[matches(.,' doubles ')]" Since I'm just trying to match a fragment of the value of the description attribute, it's possible to use the XPath 2.0 function 'matches', right? If so, what am I doing wrong?
Thanks in advance for any help!
226
We can identify elements by partially comparing to its attributes in Selenium with the help of regular expression. In xpath, there is contains () method. It supports partial matching with the value of the attributes. This method comes as useful while dealing with elements having dynamic values in their attributes.
The XPath regex plugin is used to match style which contains one or more values unique from attributes and elements in our xml documents. XPath regex is helped us using locate the part of an attribute which stays consistent for identifying the element of the web in a web page.
Definition of XPath attribute. For finding an XPath node in an XML document, use the XPath Attribute expression location path. We can use XPath to generate attribute expressions to locate nodes in an XML document.
I'm trying to get the total number of event nodes that contain the text ' doubles ' in the value of the description attribute.
matches() is a standard XPath 2.0 function. It is not available in XPath 1.0.
You can use:
count(/*/*/event[contains(@description, ' doubles ')]) To verify this, here is a small XSLT transformation which just outputs the result of evaluating the above XPath expression on the provided XML document:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:output method="text"/> <xsl:template match="/"> <xsl:value-of select= "count(/*/*/event[contains(@description, ' doubles ')])"/> </xsl:template> </xsl:stylesheet> when this transformation is applied on the provided XML document:
<game id="2009/05/02/arimlb-milmlb-1" pk="244539"> <team id="109" name="Arizona" home_team="false"> <event number="9" inning="1" description="Felipe Lopez doubles to left fielder Chris Duffy. "/> <event number="15" inning="1" description="Augie Ojeda flies out to center fielder Mike Cameron. "/> <event number="23" inning="1" description="Chad Tracy doubles to right fielder Joe Sanchez. "/> <event number="52" inning="2" description="Mark Reynolds lines out to left fielder Chris Duffy. "/> <!-- more data here --> </team> </game> the wanted, correct result is produced:
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