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/*
* 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); };
}
}
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