NotificationConstraintSet.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2023 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
package org.turro.action.queue;
 
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
 
public class NotificationConstraintSet extends HashSet<NotificationConstraint> {
 
  public NotificationConstraintSet(Collection<? extends NotificationConstraint> c) {
    super(c == null ? Collections.EMPTY_LIST : c);
  }
 
  public boolean strongBond(String... key) {
    return meetRequired(List.of(key));
  }
  
  public boolean wideBond(String... key) {
    return meetRequired(List.of(key)) && meetOptionals(List.of(key));
  }
  
  public boolean strongBond(ConstraintKeys keys) {
    return meetRequired(keys.get());
  }
  
  public boolean wideBond(ConstraintKeys keys) {
    return meetRequired(keys.get()) && meetOptionals(keys.get());
  }
  
  public boolean meetRequired(List<String> keys) {
    return hasRequired() ? keys.containsAll(required()) : true;
  }
 
  public boolean meetOptionals(List<String> keys) {
    return hasOptional() ? optional().stream().anyMatch(keys::contains) : true;
  }
  
  public boolean isRestricted() {
    return hasRequired();
  }
  
  /* Utils */
  
  private boolean hasRequired() {
    return stream().anyMatch(nc -> !nc.isOptional());
  }
  
  private List<String> required() {
    return stream().filter(nc -> !nc.isOptional())
            .map(nc -> nc.getKeyId())
            .toList();
  }
 
  private boolean hasOptional() {
    return stream().anyMatch(nc -> nc.isOptional());
  }
  
  private List<String> optional() {
    return stream().filter(nc -> nc.isOptional())
            .map(nc -> nc.getKeyId())
            .toList();
  }
 
}