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ObservableInheritanceComputer.java
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ObservableInheritanceComputer.java
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// package org.genericsystem.defaults.tools;
//
// import java.util.Collection;
// import java.util.HashMap;
// import java.util.HashSet;
// import java.util.Map;
// import java.util.Set;
// import java.util.stream.Collectors;
// import java.util.stream.Stream;
//
// import org.genericsystem.defaults.DefaultGeneric;
//
// import javafx.beans.Observable;
// import javafx.beans.binding.ListBinding;
// import javafx.collections.FXCollections;
// import javafx.collections.ObservableList;
//
/// **
// * @author Nicolas Feybesse
// *
// * @param <T>
// */
//
// public class ObservableInheritanceComputer<T extends DefaultGeneric<T>> {
//
// private final Map<T, Collection<T>> inheritingsCache = new HashMap<>();
//
// private final Set<T> set = new HashSet<T>();
//
// private final T base;
// private final T origin;
// private final int level;
// private final InheritanceComputerBinding binding;
//
// public ObservableInheritanceComputer(T base, T origin, int level) {
// this.base = base;
// this.origin = origin;
// this.level = level;
// binding = new InheritanceComputerBinding();
// }
//
// public ObservableList<T> observableInheritanceList() {
// return binding;
// }
//
// private class InheritanceComputerBinding extends ListBinding<T> {
//
// Set<Observable> observables = new HashSet<>();
//
// public void toBind(Observable observable) {
// observables.add(observable);
// bind(observable);
// }
//
// private void unbindAll() {
// for (Observable observable : observables)
// unbind(observable);
// observables.clear();
// }
//
// @Override
// protected ObservableList<T> computeValue() {
// unbindAll();
// inheritingsCache.clear();
// set.clear();
// return FXCollections.unmodifiableObservableList(FXCollections.observableList((getInheringsStream(base).filter(holder -> !set.contains(holder) && !holder.equals(origin) && holder.getLevel() == level).collect(Collectors.toList()))));
// }
// }
//
// private Stream<T> getInheringsStream(T superVertex) {
// Collection<T> result = inheritingsCache.get(superVertex);
// if (result == null)
// inheritingsCache.put(superVertex, result = new Inheritings(superVertex).inheritanceStream().collect(Collectors.toList()));
// return result.stream();
// // return new Inheritings(superVertex).inheritanceStream().collect(Collectors.toList()));
// }
//
// private class Inheritings {
//
// private final T localBase;
//
// private Inheritings(T localBase) {
// this.localBase = localBase;
// }
//
// private Stream<T> inheritanceStream() {
// return fromAboveStream().flatMap(holder -> getStream(holder)).distinct();
// }
//
// private boolean hasIntermediateSuperOrIsMeta() {
// return localBase.isMeta() || localBase.getSupers().stream().filter(next -> localBase.getMeta().equals(next.getMeta())).count() != 0;
// }
//
// private Stream<T> metaAndSupersStream() {
// return Stream.concat(hasIntermediateSuperOrIsMeta() ? Stream.empty() : Stream.of(localBase.getMeta()), localBase.getSupers().stream()).distinct();
// }
//
// private Stream<T> fromAboveStream() {
// return localBase.isRoot() ? Stream.of(origin) : metaAndSupersStream().flatMap(ObservableInheritanceComputer.this::getInheringsStream).distinct();
// }
//
// private Stream<T> getStream(final T holder) {
// if (compositesBySuper(localBase, holder).count() != 0)
// set.add(holder);
// Stream<T> indexStream = Stream.concat(holder.getLevel() < level ? compositesByMeta(localBase, holder) : Stream.empty(), compositesBySuper(localBase, holder));
// return Stream.concat(Stream.of(holder), indexStream.flatMap(x -> getStream(x)).distinct());
// }
// }
//
// @SuppressWarnings("hiding")
// private <T extends DefaultGeneric<T>> Stream<T> compositesByMeta(T localBase, T holder) {
// ObservableList<T> composites = localBase.getObservableComposites().filtered(x -> !x.equals(holder) && x.getMeta().equals(holder));
// binding.toBind(composites);
// return composites.stream();
// }
//
// @SuppressWarnings("hiding")
// private <T extends DefaultGeneric<T>> Stream<T> compositesBySuper(T localBase, T holder) {
// ObservableList<T> composites = localBase.getObservableComposites().filtered(x -> x.getSupers().contains(holder));
// binding.toBind(composites);
// return composites.stream();
// }
// }