| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.syncope.core.persistence.neo4j.entity; |
| |
| import java.util.Collection; |
| import java.util.Comparator; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.ListIterator; |
| import java.util.SortedSet; |
| import java.util.Spliterator; |
| import java.util.function.BiFunction; |
| import java.util.function.Consumer; |
| import java.util.stream.Stream; |
| import org.apache.syncope.core.persistence.api.entity.Entity; |
| |
| public class SortedSetList<E extends Entity, R extends Neo4jSortedRelationsihip<E>> implements List<E> { |
| |
| private class SortedSetListIterator implements Iterator<E> { |
| |
| private final Iterator<R> ditor; |
| |
| SortedSetListIterator(final Iterator<R> ditor) { |
| this.ditor = ditor; |
| } |
| |
| @Override |
| public boolean hasNext() { |
| return ditor.hasNext(); |
| } |
| |
| @Override |
| public E next() { |
| return ditor.next().getEntity(); |
| } |
| |
| @Override |
| public void remove() { |
| ditor.remove(); |
| } |
| } |
| |
| private class SortedSetListSplitIterator implements Spliterator<E> { |
| |
| private final Spliterator<R> ditor; |
| |
| SortedSetListSplitIterator(final Spliterator<R> ditor) { |
| this.ditor = ditor; |
| } |
| |
| @Override |
| public boolean tryAdvance(final Consumer<? super E> action) { |
| return ditor.tryAdvance(t -> action.accept(t.getEntity())); |
| } |
| |
| @Override |
| public Spliterator<E> trySplit() { |
| return new SortedSetListSplitIterator(ditor.trySplit()); |
| } |
| |
| @Override |
| public long estimateSize() { |
| return ditor.estimateSize(); |
| } |
| |
| @Override |
| public int characteristics() { |
| return ditor.characteristics(); |
| } |
| |
| @Override |
| public Comparator<? super E> getComparator() { |
| throw new UnsupportedOperationException("NOT FOR NOW"); |
| } |
| } |
| |
| private final SortedSet<R> delegate; |
| |
| private final BiFunction<Integer, E, R> builder; |
| |
| public SortedSetList( |
| final SortedSet<R> delegate, |
| final BiFunction<Integer, E, R> builder) { |
| |
| this.delegate = delegate; |
| this.builder = builder; |
| } |
| |
| @Override |
| public int size() { |
| return delegate.size(); |
| } |
| |
| @Override |
| public boolean isEmpty() { |
| return delegate.isEmpty(); |
| } |
| |
| @Override |
| public boolean contains(final Object o) { |
| return delegate.stream().anyMatch(e -> e.getEntity().equals(o)); |
| } |
| |
| @Override |
| public Iterator<E> iterator() { |
| return new SortedSetListIterator(delegate.iterator()); |
| } |
| |
| @Override |
| public Spliterator<E> spliterator() { |
| return new SortedSetListSplitIterator(delegate.spliterator()); |
| } |
| |
| @Override |
| public Object[] toArray() { |
| return delegate.stream(). |
| sorted(Comparator.comparing(Neo4jSortedRelationsihip::getIndex)). |
| map(Neo4jSortedRelationsihip::getEntity).toList().toArray(); |
| } |
| |
| @Override |
| public <T> T[] toArray(final T[] a) { |
| return delegate.stream(). |
| sorted(Comparator.comparing(Neo4jSortedRelationsihip::getIndex)). |
| map(Neo4jSortedRelationsihip::getEntity).toList().toArray(a); |
| } |
| |
| @Override |
| public boolean add(final E e) { |
| return delegate.add(builder.apply( |
| delegate.stream().map(Neo4jSortedRelationsihip::getIndex). |
| max(Comparator.naturalOrder()).orElse(0) + 1, |
| e)); |
| } |
| |
| @Override |
| public boolean remove(final Object o) { |
| return delegate.removeIf(o::equals); |
| } |
| |
| @Override |
| public boolean containsAll(final Collection<?> c) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public boolean addAll(final Collection<? extends E> c) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public boolean addAll(final int index, final Collection<? extends E> c) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public boolean removeAll(final Collection<?> c) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public boolean retainAll(final Collection<?> c) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public void clear() { |
| delegate.clear(); |
| } |
| |
| @Override |
| public E get(final int index) { |
| if (index < 0 || index >= delegate.size()) { |
| throw new IndexOutOfBoundsException(); |
| } |
| |
| int idx = 0; |
| for (Iterator<R> itor = delegate.iterator(); |
| idx <= index && itor.hasNext(); idx++) { |
| |
| Neo4jSortedRelationsihip<E> next = itor.next(); |
| if (idx == index) { |
| return next.getEntity(); |
| } |
| } |
| |
| throw new IndexOutOfBoundsException(); |
| } |
| |
| @Override |
| public Stream<E> stream() { |
| return delegate.stream().map(Neo4jSortedRelationsihip::getEntity); |
| } |
| |
| @Override |
| public String toString() { |
| return delegate.toString(); |
| } |
| |
| @Override |
| public E set(final int index, final E element) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public void add(final int index, final E element) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public E remove(final int index) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public int indexOf(final Object o) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public int lastIndexOf(final Object o) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public ListIterator<E> listIterator() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public ListIterator<E> listIterator(final int index) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public List<E> subList(final int fromIndex, final int toIndex) { |
| throw new UnsupportedOperationException(); |
| } |
| } |