com.icl.saxon.functions
Class Lang
java.lang.Object
|
+--com.icl.saxon.expr.Expression
|
+--com.icl.saxon.expr.Function
|
+--com.icl.saxon.functions.Lang
- public class Lang
- extends Function
Constructor Summary |
Lang()
|
Method Summary |
Value |
eval(java.util.Vector args,
Context context)
Evaluate the function, having evaluated its arguments. |
int |
getDataType()
Determine the data type of the exprssion, if possible |
int |
getIntrinsicDependencies()
Determine which aspects of the context the expression depends on. |
java.lang.String |
getName()
Get the name of the function. |
static boolean |
isLang(java.lang.String arglang,
Context context)
Test whether the context node has the given language attribute |
Methods inherited from class com.icl.saxon.expr.Expression |
containsReferences, enumerate, evaluateAsBoolean, evaluateAsNodeSet, evaluateAsNumber, evaluateAsString, getStaticContext, isNumeric, isRelative, make, make, setStaticContext, usesCurrent |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Lang
public Lang()
getName
public java.lang.String getName()
- Description copied from class:
Function
- Get the name of the function.
This method must be implemented in all subclasses.
- Overrides:
getName
in class Function
- Following copied from class:
com.icl.saxon.expr.Function
- Returns:
- the name of the function, as used in XSL expressions, but excluding
its namespace prefix
getDataType
public int getDataType()
- Determine the data type of the exprssion, if possible
- Overrides:
getDataType
in class Expression
- Returns:
- Value.BOOLEAN
getIntrinsicDependencies
public int getIntrinsicDependencies()
- Determine which aspects of the context the expression depends on. The result is
a bitwise-or'ed value composed from constants such as Context.VARIABLES and
Context.CURRENT_NODE
- Overrides:
getIntrinsicDependencies
in class Function
eval
public Value eval(java.util.Vector args,
Context context)
throws org.xml.sax.SAXException
- Description copied from class:
Function
- Evaluate the function, having evaluated its arguments.
This method must be implemented in all subclasses.
- Overrides:
eval
in class Function
- Following copied from class:
com.icl.saxon.expr.Function
- Parameters:
arguments
- A Vector, each of whose elements is a Value containing the value of a
supplied argument to the function.context
- The context in which the function is to be evaluated- Returns:
- a Value representing the result of the function. This must be of the data type
corresponding to the result of getType().
- Throws:
org.xml.sax.SAXException
- if the function cannot be evaluated.
isLang
public static boolean isLang(java.lang.String arglang,
Context context)
throws org.xml.sax.SAXException
- Test whether the context node has the given language attribute
- Parameters:
arglang
- the language being testedcontext
- the context, to identify the context node