Esempio n. 1
0
  /**
   * This method derives the content.
   *
   * @return The derived content
   */
  protected java.util.List<Object> deriveContent() {
    java.util.List<Object> ret = new java.util.ArrayList<Object>();
    ActiveCollection parent = getParent();
    Predicate pred = getPredicate();
    ActiveCollectionContext context = getContext();

    if (parent != null && pred != null) {
      for (Object value : (ActiveList) parent) {
        if (pred.evaluate(context, value)) {
          ret.add(value);
        }
      }
    }

    return (ret);
  }
Esempio n. 2
0
  /**
   * This constructor initializes the active list as a derived version of the supplied collection,
   * that applies the supplied predicate.
   *
   * @param name The name
   * @param parent The parent collection
   * @param context The context
   * @param predicate The predicate
   * @param properties The optional properties
   */
  protected ActiveList(
      String name,
      ActiveCollection parent,
      ActiveCollectionContext context,
      Predicate predicate,
      java.util.Map<String, Object> properties) {
    super(name, parent, context, predicate, properties);

    if (isActive()) {
      // Filter the parent list items, to determine which pass the predicate
      for (Object value : (ActiveList) parent) {
        if (predicate.evaluate(context, value)) {
          insert(null, value);
        }
      }
    }
  }