| /* |
| * Copyright (c) 2019, 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. |
| */ |
| |
| package org.reactivestreams; |
| |
| /** |
| * A {@link Publisher} is a provider of a potentially unbounded number of sequenced elements, publishing them according to |
| * the demand received from its {@link Subscriber}(s). |
| * <p> |
| * A {@link Publisher} can serve multiple {@link Subscriber}s subscribed {@link #subscribe(Subscriber)} dynamically |
| * at various points in time. |
| * |
| * @param <T> the type of element signaled. |
| */ |
| public interface Publisher<T> { |
| |
| /** |
| * Request {@link Publisher} to start streaming data. |
| * <p> |
| * This is a "factory method" and can be called multiple times, each time starting a new {@link Subscription}. |
| * <p> |
| * Each {@link Subscription} will work for only a single {@link Subscriber}. |
| * <p> |
| * A {@link Subscriber} should only subscribe once to a single {@link Publisher}. |
| * <p> |
| * If the {@link Publisher} rejects the subscription attempt or otherwise fails it will |
| * signal the error via {@link Subscriber#onError}. |
| * |
| * @param s the {@link Subscriber} that will consume signals from this {@link Publisher} |
| */ |
| public void subscribe(Subscriber<? super T> s); |
| } |
