Class ChildContext

java.lang.Object
org.apache.commons.jxpath.ri.EvalContext
org.apache.commons.jxpath.ri.axes.ChildContext
All Implemented Interfaces:
Iterator, ExpressionContext

public class ChildContext extends EvalContext
EvalContext that can walk the "child::", "following-sibling::" and "preceding-sibling::" axes.
  • Constructor Details

    • ChildContext

      public ChildContext(EvalContext parentContext, NodeTest nodeTest, boolean startFromParentLocation, boolean reverse)
      Constructs a new ChildContext.
      Parameters:
      parentContext - parent EvalContext
      nodeTest - NodeTest
      startFromParentLocation - whether to start from parent location
      reverse - whether to iterate in reverse
  • Method Details

    • getCurrentNodePointer

      Description copied from class: EvalContext
      Returns the current context node. Undefined before the beginning of the iteration.
      Specified by:
      getCurrentNodePointer in class EvalContext
      Returns:
      NodePoiner
    • getSingleNodePointer

      This method is called on the last context on the path when only one value is needed. Note that this will return the whole property, even if it is a collection. It will not extract the first element of the collection. For example, "books" will return the collection of books rather than the first book from that collection.
      Overrides:
      getSingleNodePointer in class EvalContext
      Returns:
      Pointer
    • nextNode

      public boolean nextNode()
      Description copied from class: EvalContext
      Returns true if there is another object in the current set. Switches the current position and node to the next object.
      Specified by:
      nextNode in class EvalContext
      Returns:
      boolean
    • reset

      public void reset()
      Description copied from class: EvalContext
      Sets current position = 0, which is the pre-iteration state.
      Overrides:
      reset in class EvalContext
    • setPosition

      public boolean setPosition(int position)
      Description copied from class: EvalContext
      Moves the current position to the specified index. Used with integer predicates to quickly get to the n'th element of the node set. Returns false if the position is out of the node set range. You can call it with 0 as the position argument to restart the iteration.
      Overrides:
      setPosition in class EvalContext
      Parameters:
      position - to set
      Returns:
      boolean