Class ItemMappingFeed

  • All Implemented Interfaces:
    javax.xml.transform.Result, Receiver

    public class ItemMappingFeed
    extends GroundedItemFeed
    A Feed which applies an ItemMappingFunction to each supplied item. This produces zero or one output items for each input item. The ItemMappingFunction must be one that is capable of handling streamed nodes (otherwise an UnsupportedOperationException is likely).
    • Method Detail

      • startSelectedParentNode

        public Receiver startSelectedParentNode​(FleetingParentNode node,
                                                Location locationId)
                                         throws XPathException
        Description copied from class: ItemFeed
        Signal that an element or document node has been found that matches the selection that this Watch is looking for. This method is called by the WatchManager while processing the startElement or startDocument event that matches the selection.
        Overrides:
        startSelectedParentNode in class ItemFeed
        Parameters:
        node - the element or document node whose start event has been matched
        locationId - the location associated with the element or document node (may be the location of the instruction that created it)
        Returns:
        a Receiver to be notified of all events starting with the startElement/startDocument event for the matched element, and ending with the endElement event for that element; or null if this feature is not required.
        Throws:
        XPathException - May be raised if a dynamic error occurs
      • endSelectedParentNode

        public void endSelectedParentNode​(Location locationId)
                                   throws XPathException
        Description copied from class: ItemFeed
        Signal that the endElement event has occurred for the element whose startElement event caused the Watch to be activated.
        Overrides:
        endSelectedParentNode in class ItemFeed
        Parameters:
        locationId - the location of the element
        Throws:
        XPathException - May be raised if a constraint implemented by this Watch is violated