spring security SimpMessageTypeMatcher 源码
spring security SimpMessageTypeMatcher 代码
文件路径：/messaging/src/main/java/org/springframework/security/messaging/util/matcher/SimpMessageTypeMatcher.java
/*
* 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;
import org.springframework.messaging.MessageHeaders;
import org.springframework.messaging.simp.SimpMessageHeaderAccessor;
import org.springframework.messaging.simp.SimpMessageType;
import org.springframework.util.Assert;
import org.springframework.util.ObjectUtils;
/**
* A {@link MessageMatcher} that matches if the provided {@link Message} has a type that
* is the same as the {@link SimpMessageType} that was specified in the constructor.
*
* @author Rob Winch
* @since 4.0
*
*/
public class SimpMessageTypeMatcher implements MessageMatcher<Object> {
private final SimpMessageType typeToMatch;
/**
* Creates a new instance
* @param typeToMatch the {@link SimpMessageType} that will result in a match. Cannot
* be null.
*/
public SimpMessageTypeMatcher(SimpMessageType typeToMatch) {
Assert.notNull(typeToMatch, "typeToMatch cannot be null");
this.typeToMatch = typeToMatch;
}
@Override
public boolean matches(Message<?> message) {
MessageHeaders headers = message.getHeaders();
SimpMessageType messageType = SimpMessageHeaderAccessor.getMessageType(headers);
return this.typeToMatch == messageType;
}
@Override
public boolean equals(Object other) {
if (this == other) {
return true;
}
if (!(other instanceof SimpMessageTypeMatcher)) {
return false;
}
SimpMessageTypeMatcher otherMatcher = (SimpMessageTypeMatcher) other;
return ObjectUtils.nullSafeEquals(this.typeToMatch, otherMatcher.typeToMatch);
}
@Override
public int hashCode() {
// Using nullSafeHashCode for proper array hashCode handling
return ObjectUtils.nullSafeHashCode(this.typeToMatch);
}
@Override
public String toString() {
return "SimpMessageTypeMatcher [typeToMatch=" + this.typeToMatch + "]";
}
}
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