Package org.apache.xalan.extensions

Interface ExpressionContext

  • All Known Implementing Classes:
    XPathContext.XPathExpressionContext
    public interface ExpressionContext
    An object that implements this interface can supply information about the current XPath expression context.

    • Method Detail

      • getContextNode

        org.w3c.dom.Node getContextNode()
        Get the current context node.
        Returns:
        The current context node.

      • getContextNodes

        org.w3c.dom.traversal.NodeIterator getContextNodes()
        Get the current context node list.
        Returns:
        An iterator for the current context list, as defined in XSLT.

      • getErrorListener

        javax.xml.transform.ErrorListener getErrorListener()
        Get the error listener.
        Returns:
        The registered error listener.

      • toNumber

        double toNumber​(org.w3c.dom.Node n)
        Get the value of a node as a number.
        Parameters:
        n - Node to be converted to a number. May be null.
        Returns:
        value of n as a number.

      • toString

        java.lang.String toString​(org.w3c.dom.Node n)
        Get the value of a node as a string.
        Parameters:
        n - Node to be converted to a string. May be null.
        Returns:
        value of n as a string, or an empty string if n is null.

      • getVariableOrParam

        XObject getVariableOrParam​(QName qname)
                    throws javax.xml.transform.TransformerException
        Get a variable based on it's qualified name.
        Parameters:
        qname - The qualified name of the variable.
        Returns:
        The evaluated value of the variable.
        Throws:
        javax.xml.transform.TransformerException

      • getXPathContext

        XPathContext getXPathContext()
                      throws javax.xml.transform.TransformerException
        Get the XPathContext that owns this ExpressionContext. Note: exslt:function requires the XPathContext to access the variable stack and TransformerImpl.
        Returns:
        The current XPathContext.
        Throws:
        javax.xml.transform.TransformerException