com.icl.saxon.functions
Class StringFn
java.lang.Object
|
+--com.icl.saxon.expr.Expression
|
+--com.icl.saxon.expr.Function
|
+--com.icl.saxon.functions.StringFn
- public class StringFn
- extends Function
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 |
StringFn
public StringFn()
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.STRING
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
reduceIntrinsic
protected Expression reduceIntrinsic(int dependencies,
Context context)
throws org.xml.sax.SAXException
- Remove intrinsic dependencies.
- Overrides:
reduceIntrinsic
in class Function
simplify
public Expression simplify()
throws org.xml.sax.SAXException
- Description copied from class:
Function
- Simplify an expression
- Overrides:
simplify
in class Function
- Following copied from class:
com.icl.saxon.expr.Function
- Returns:
- the simplified expression
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.