Class TreeEnumeration

    • Field Detail

      • nodeTest

        protected java.util.function.Predicate<? super NodeInfo> nodeTest
      • position

        protected int position
    • Constructor Detail

      • TreeEnumeration

        public TreeEnumeration​(NodeImpl origin,
                               java.util.function.Predicate<? super NodeInfo> nodeTest)
        Create an axis enumeration for a given type and name of node, from a given origin node
        Parameters:
        origin - the node from which the axis originates
        nodeTest - test to be satisfied by the returned nodes, or null if all nodes are to be returned.
    • Method Detail

      • conforms

        protected boolean conforms​(NodeImpl node)
        Test whether a node conforms to the node type and name constraints. Note that this returns true if the supplied node is null, this is a way of terminating a loop.
        Parameters:
        node - the node to be tested
        Returns:
        true if the node matches the requested node type and name
      • advance

        protected final void advance()
        Advance along the axis until a node is found that matches the required criteria
      • step

        protected abstract void step()
        Advance one step along the axis: the resulting node might not meet the required criteria for inclusion
      • hasNext

        public boolean hasNext()
        Determine whether there are more items to come. Note that this operation is stateless and it is not necessary (or usual) to call it before calling next(). It is used only when there is an explicit need to tell if we are at the last element.
        Specified by:
        hasNext in interface LookaheadIterator
        Returns:
        true if there are more items in the sequence