Package org.jsoup.select

Class Evaluator

java.lang.Object
org.jsoup.select.Evaluator
Direct Known Subclasses:
CombiningEvaluator, Evaluator.AllElements, Evaluator.Attribute, Evaluator.AttributeKeyPair, Evaluator.AttributeStarting, Evaluator.AttributeWithValueMatching, Evaluator.Class, Evaluator.ContainsData, Evaluator.ContainsOwnText, Evaluator.ContainsText, Evaluator.ContainsWholeOwnText, Evaluator.ContainsWholeText, Evaluator.CssNthEvaluator, Evaluator.Id, Evaluator.IndexEvaluator, Evaluator.IsEmpty, Evaluator.IsFirstChild, Evaluator.IsLastChild, Evaluator.IsOnlyChild, Evaluator.IsOnlyOfType, Evaluator.IsRoot, Evaluator.Matches, Evaluator.MatchesOwn, Evaluator.MatchesWholeOwnText, Evaluator.MatchesWholeText, Evaluator.MatchText, Evaluator.Tag, Evaluator.TagEndsWith
public abstract class Evaluator extends Object
Evaluates that an element matches the selector.

  • Constructor Details

    • Evaluator

      protected Evaluator()

  • Method Details

    • asPredicate

      public Predicate<Element> asPredicate(Element root)
      Provides a Predicate for this Evaluator, matching the test Element.
      Parameters:
      root - the root Element, for match evaluation
      Returns:
      a predicate that accepts an Element to test for matches with this Evaluator
      Since:
      1.17.1

    • matches

      public abstract boolean matches(Element root, Element element)
      Test if the element meets the evaluator's requirements.
      Parameters:
      root - Root of the matching subtree
      element - tested element
      Returns:
      Returns true if the requirements are met or false otherwise

    • reset

      protected void reset()
      Reset any internal state in this Evaluator before executing a new Collector evaluation.

    • cost

      protected int cost()
      A relative evaluator cost function. During evaluation, Evaluators are sorted by ascending cost as an optimization.
      Returns:
      the relative cost of this Evaluator