Class LangFunction
- java.lang.Object
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- org.jaxen.function.LangFunction
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- All Implemented Interfaces:
Function
public class LangFunction extends java.lang.Object implements Function
4.3
boolean lang(string)The lang function returns true or false depending on whether the language of the context node as specified by
xml:langattributes is the same as or is a sublanguage of the language specified by the argument string. The language of the context node is determined by the value of thexml:langattribute on the context node, or, if the context node has noxml:langattribute, by the value of thexml:langattribute on the nearest ancestor of the context node that has anxml:langattribute. If there is no such attribute, then lang returns false. If there is such an attribute, then lang returns true if the attribute value is equal to the argument ignoring case, or if there is some suffix starting with-such that the attribute value is equal to the argument ignoring that suffix of the attribute value and ignoring case. For example,lang("en")would return true if the context node is any of these five elements:<para xml:lang="en"/> <div xml:lang="en"><para/></div> <para xml:lang="EN"/> <para xml:lang="en-us"/>
- Author:
- Attila Szegedi (szegedia @ freemail.hu)
- See Also:
- XPath Specification
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Constructor Summary
Constructors Constructor Description LangFunction()Create a newLangFunctionobject.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.Objectcall(Context context, java.util.List args)Determines whether or not the context node is written in the language specified by the XPath string-value ofargs.get(0), as determined by the nearestxml:langattribute in scope.
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Method Detail
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call
public java.lang.Object call(Context context, java.util.List args) throws FunctionCallException
Determines whether or not the context node is written in the language specified by the XPath string-value of
args.get(0), as determined by the nearestxml:langattribute in scope.- Specified by:
callin interfaceFunction- Parameters:
context- the context in which to evaluate thelang()functionargs- the arguments to the lang function- Returns:
- a
Booleanindicating whether the context node is written in the specified language - Throws:
FunctionCallException- ifargsdoes not have length one
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