Java tutorial
/* * Copyright 2002-2016 the original author or authors. * * Licensed 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 * * https://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.springframework.security.messaging.util.matcher; import org.springframework.messaging.Message; /** * API for determining if a {@link Message} should be matched on. * * @since 4.0 * @author Rob Winch */ public interface MessageMatcher<T> { /** * Returns true if the {@link Message} matches, else false * @param message the {@link Message} to match on * @return true if the {@link Message} matches, else false */ boolean matches(Message<? extends T> message); /** * Matches every {@link Message} */ MessageMatcher<Object> ANY_MESSAGE = new MessageMatcher<Object>() { @Override public boolean matches(Message<? extends Object> message) { return true; } @Override public String toString() { return "ANY_MESSAGE"; } }; }