Class Translate

    • Constructor Detail

      • Translate

        public Translate()
    • Method Detail

      • typeCheck

        public Expression typeCheck​(ExpressionVisitor visitor,
                                    ExpressionVisitor.ContextItemType contextItemType)
                             throws XPathException
        Description copied from class: FunctionCall
        Type-check the expression. This also calls preEvaluate() to evaluate the function if all the arguments are constant; functions that do not require this behavior can override the preEvaluate method.
        Overrides:
        typeCheck in class FunctionCall
        Parameters:
        visitor - an expression visitor
        contextItemType - the static type of "." at the point where this expression is invoked. The parameter is set to null if it is known statically that the context item will be undefined. If the type of the context item is not known statically, the argument is set to Type.ITEM_TYPE
        Returns:
        the original expression, rewritten to perform necessary run-time type checks, and to perform other type-related optimizations
        Throws:
        XPathException - if an error is discovered during this phase (typically a type error)
      • evaluateItem

        public Item evaluateItem​(XPathContext context)
                          throws XPathException
        Evaluate the function
        Overrides:
        evaluateItem in class Expression
        Parameters:
        context - The context in which the expression is to be evaluated
        Returns:
        the node or atomic value that results from evaluating the expression; or null to indicate that the result is an empty sequence
        Throws:
        XPathException - if any dynamic error occurs evaluating the expression
      • getStaticMap

        public IntToIntMap getStaticMap()
        Get the translation map built at compile time if there is one
      • translateUsingMap

        public static java.lang.CharSequence translateUsingMap​(java.lang.CharSequence in,
                                                               IntToIntMap map)
        Implement the translate() function using an index built at compile time
        Parameters:
        in - the string to be translated
        map - index built at compile time, mapping input characters to output characters. The map returns -1 for a character that is to be deleted from the input string, Integer.MAX_VALUE for a character that is to remain intact
        Returns:
        the translated character string