spring-data-redis PatternTopic 源码
spring-data-redis PatternTopic 代码
文件路径：/src/main/java/org/springframework/data/redis/listener/PatternTopic.java
/*
* Copyright 2011-2022 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.data.redis.listener;
import org.springframework.util.Assert;
import org.springframework.util.ObjectUtils;
/**
* Pattern topic (matching multiple channels).
*
* @author Costin Leau
* @author Mark Paluch
* @author Christoph Strobl
*/
public class PatternTopic implements Topic {
private final String channelPattern;
/**
* Constructs a new {@link PatternTopic} instance.
*
* @param pattern must not be {@literal null}.
*/
public PatternTopic(String pattern) {
Assert.notNull(pattern, "Pattern must not be null");
this.channelPattern = pattern;
}
/**
* Create a new {@link PatternTopic} for channel subscriptions based on a {@code pattern}.
*
* @param pattern the channel pattern, must not be {@literal null} or empty.
* @return the {@link PatternTopic} for {@code pattern}.
* @since 2.1
*/
public static PatternTopic of(String pattern) {
return new PatternTopic(pattern);
}
/**
* @return channel pattern.
*/
@Override
public String getTopic() {
return channelPattern;
}
@Override
public String toString() {
return channelPattern;
}
@Override
public boolean equals(Object o) {
if (this == o)
return true;
if (o == null || getClass() != o.getClass())
return false;
PatternTopic that = (PatternTopic) o;
return ObjectUtils.nullSafeEquals(channelPattern, that.channelPattern);
}
@Override
public int hashCode() {
return ObjectUtils.nullSafeHashCode(channelPattern);
}
}
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