001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.juneau.rest.server.mcp;
018
019/**
020 * The non-notification result of one {@link McpRevision#dispatch(McpExchange, McpServerConfig, org.apache.juneau.commons.inject.BeanStore)}
021 * call: either a complete JSON-RPC response envelope ({@link McpResponseResult}) or a held-open streaming
022 * publisher ({@link McpStreamResult}, for a revision-specific method whose successful result is not a
023 * single JSON-RPC envelope, e.g. the {@code 2026-07-28} {@code subscriptions/listen} method).
024 *
025 * <p>
026 * {@code dispatch(...)} may still return plain <jk>null</jk> (neither variant) for a notification
027 * request, which the HTTP layer renders as an empty body — see {@link McpRevision#dispatch}.
028 *
029 * <p>
030 * Introduced so callers {@code switch}/{@code instanceof}-pattern-match over a closed, compiler-checked
031 * set of outcomes instead of casting the historical {@code Object}-typed return value.
032 *
033 * @since 10.0.0
034 */
035public sealed interface McpDispatchResult permits McpResponseResult, McpStreamResult {}