| /* |
| * 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.tinkerpop.gremlin.process.traversal; |
| |
| import org.apache.tinkerpop.gremlin.util.iterator.IteratorUtils; |
| |
| import java.util.Collection; |
| import java.util.function.BiPredicate; |
| |
| /** |
| * {@link Contains} is a {@link BiPredicate} that evaluates whether the first object is contained within (or not |
| * within) the second collection object. If the first object is a number, each element in the second collection |
| * will be compared to the first object using {@link Compare}'s {@code eq} predicate. This will ensure, that numbers |
| * are matched by their value only, ignoring the number type. For example: |
| * <p/> |
| * <pre> |
| * gremlin Contains.within [gremlin, blueprints, furnace] == true |
| * gremlin Contains.without [gremlin, rexster] == false |
| * rexster Contains.without [gremlin, blueprints, furnace] == true |
| * 123 Contains.within [1, 2, 3] == false |
| * 100 Contains.within [1L, 10L, 100L] == true |
| * </pre> |
| * |
| * |
| * |
| * @author Pierre De Wilde |
| * @author Marko A. Rodriguez (http://markorodriguez.com) |
| */ |
| public enum Contains implements BiPredicate<Object, Collection> { |
| |
| /** |
| * The first object is within the {@link Collection} provided in the second object. |
| * |
| * @since 3.0.0-incubating |
| */ |
| within { |
| @Override |
| public boolean test(final Object first, final Collection second) { |
| return first instanceof Number |
| ? IteratorUtils.anyMatch(second.iterator(), o -> Compare.eq.test(first, o)) |
| : second.contains(first); |
| } |
| }, |
| |
| /** |
| * The first object is not within the {@link Collection} provided in the second object. |
| * |
| * @since 3.0.0-incubating |
| */ |
| without { |
| @Override |
| public boolean test(final Object first, final Collection second) { |
| return !within.test(first, second); |
| } |
| }; |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public abstract boolean test(final Object first, final Collection second); |
| |
| /** |
| * Produce the opposite representation of the current {@code Contains} enum. |
| */ |
| @Override |
| public Contains negate() { |
| return this.equals(within) ? without : within; |
| } |
| } |