| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code 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 General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * Performs operations upon an input object which may modify that object and/or |
| * external state (other objects). |
| * |
| * <p>All block implementations are expected to: |
| * <ul> |
| * <li>When used for aggregate operations upon many elements blocks |
| * should not assume that the {@code apply} operation will be called upon |
| * elements in any specific order.</li> |
| * </ul> |
| * |
| * @param <T> The type of input objects to {@code apply}. |
| */ |
| public interface TBlock<T> { |
| |
| /** |
| * Performs operations upon the provided object which may modify that object |
| * and/or external state. |
| * |
| * @param t an input object |
| */ |
| void apply(T t); |
| |
| /** |
| * Returns a Block which performs in sequence the {@code apply} methods of |
| * multiple Blocks. This Block's {@code apply} method is performed followed |
| * by the {@code apply} method of the specified Block operation. |
| * |
| * @param other an additional Block which will be chained after this Block |
| * @return a Block which performs in sequence the {@code apply} method of |
| * this Block and the {@code apply} method of the specified Block operation |
| */ |
| public default TBlock<T> chain(TBlock<? super T> other) { |
| return (T t) -> { apply(t); other.apply(t); }; |
| } |
| } |