The nilled() function
Smartsite 7.4 - ...
The nilled() XPath 2.0 function returns true for an element that is nilled.
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boolean fn:nilled(arg1) |
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Parameters:
- arg1: a node reference.
Example
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<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:xf="http://www.w3.org/2002/xforms"
xmlns:fn="http://www.w3.org/2005/xpath-functions"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<head>
<title>XForms Document</title>
<xf:model>
<xf:instance>
<data xmlns="">
<entry>
<strings>
<string index="1">a</string>
<string index="2">b</string>
<string index="3" xsi:nil="false">c</string>
<string index="4" xsi:nil="true"></string>
</strings>
</entry>
</data>
</xf:instance>
</xf:model>
</head>
<body>
<xf:group ref="entry" appearance="full" class="nilled">
<xf:label />
<xf:output value="fn:nilled(strings/string[@index='2'])" />
<xf:output value="fn:nilled(strings/string[@index='3'])" />
<xf:output value="fn:nilled(strings/string[@index='4'])" />
</xf:group>
</body>
</html>
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The result will be:
false
false
false
true
Namespace
This function is available within the XPath 2.0 namespace (http://www.w3.org/2005/xpath-functions).