Exemple #1
0
 /**
  * Add a representation of this expression to a PathMap. The PathMap captures a map of the nodes
  * visited by an expression in a source tree.
  *
  * <p>
  *
  * <p>The default implementation of this method assumes that an expression does no navigation
  * other than the navigation done by evaluating its subexpressions, and that the subexpressions
  * are evaluated in the same context as the containing expression. The method must be overridden
  * for any expression where these assumptions do not hold. For example, implementations exist for
  * AxisExpression, ParentExpression, and RootExpression (because they perform navigation), and for
  * the doc(), document(), and collection() functions because they create a new navigation root.
  * Implementations also exist for PathExpression and FilterExpression because they have
  * subexpressions that are evaluated in a different context from the calling expression.
  *
  * @param pathMap the PathMap to which the expression should be added
  * @param pathMapNodeSet the PathMapNodeSet to which the paths embodied in this expression should
  *     be added
  * @return the pathMapNodeSet representing the points in the source document that are both
  *     reachable by this expression, and that represent possible results of this expression. For
  *     an expression that does navigation, it represents the end of the arc in the path map that
  *     describes the navigation route. For other expressions, it is the same as the input
  *     pathMapNode.
  */
 public PathMap.PathMapNodeSet addToPathMap(
     PathMap pathMap, PathMap.PathMapNodeSet pathMapNodeSet) {
   PathMap.PathMapNodeSet varPath = sequence.addToPathMap(pathMap, pathMapNodeSet);
   pathMap.registerPathForVariable(this, varPath);
   return action.addToPathMap(pathMap, pathMapNodeSet);
 }