org.jaxen.function
public class LangFunction extends 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:lang
attributes 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:lang
attribute on the context node, or, if the context node has noxml:lang
attribute, by the value of thexml:lang
attribute on the nearest ancestor of the context node that has anxml:lang
attribute. 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"/>
See Also: XPath Specification
Field Summary | |
---|---|
static String | LANG_LOCALNAME |
static String | XMLNS_URI |
Constructor Summary | |
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LangFunction()
Create a new LangFunction object. |
Method Summary | |
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Object | call(Context context, List args)
Determines whether or not the context node is written in the language specified
by the XPath string-value of |
static Boolean | evaluate(List contextNodes, Object lang, Navigator nav) |
static boolean | evaluate(Object node, String lang, Navigator nav) |
static boolean | isSublang(String sublang, String lang) |
LangFunction
object.
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 nearest xml:lang
attribute in scope.
Parameters: context the context in which to evaluate the lang()
function args the arguments to the lang function
Returns: a Boolean
indicating whether the context node is written in
the specified language
Throws: FunctionCallException if args
does not have length one