/* * (C) Copyright 2017 Pantheon Technologies, s.r.o. and others. * * Licensed 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.opendaylight.yangtools.triemap; import static com.google.common.base.Preconditions.checkArgument; import java.util.Iterator; import java.util.Map.Entry; /** * Support for EntrySet operations required by the Map interface. * * @param the type of keys * @param the type of values */ final class MutableEntrySet extends AbstractEntrySet { MutableEntrySet(final TrieMap map) { super(map); } @Override @SuppressWarnings("checkstyle:parameterName") public boolean add(final Entry e) { final K k = e.getKey(); checkArgument(k != null); final V v = e.getValue(); checkArgument(v != null); final V prev = map().putIfAbsent(k, v); return prev == null || !v.equals(prev); } @Override public void clear() { map().clear(); } @Override public Iterator> iterator() { return map().iterator(); } @Override @SuppressWarnings("checkstyle:parameterName") public boolean remove(final Object o) { if (!(o instanceof Entry)) { return false; } final Entry e = (Entry) o; final Object key = e.getKey(); if (key == null) { return false; } final Object value = e.getValue(); if (value == null) { return false; } return map().remove(key, value); } }