Constructor Detail

• PredicateContext

  public PredicateContext(EvalContext parentContext,
                  Expression expression)

  Create a new PredicateContext.

  Parameters:

  parentContext - parent context

  expression - compiled Expression

Method Detail

• 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

• 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

• getCurrentNodePointer

  public NodePointer 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

• reset

  public void reset()

  Description copied from class: EvalContext
  Sets current position = 0, which is the pre-iteration state.

  Overrides:

  reset in class EvalContext

• nextSet

  public boolean nextSet()

  Description copied from class: EvalContext
  Returns true if there is another sets of objects to interate over. Resets the current position and node.

  Overrides:

  nextSet in class EvalContext

  Returns:

  boolean