spring-session Hazelcast4PrincipalNameExtractor 源码
spring-session Hazelcast4PrincipalNameExtractor 代码
文件路径：/spring-session-hazelcast/hazelcast4/src/main/java/org/springframework/session/hazelcast/Hazelcast4PrincipalNameExtractor.java
/*
* Copyright 2014-2020 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.session.hazelcast;
import com.hazelcast.query.extractor.ValueCollector;
import com.hazelcast.query.extractor.ValueExtractor;
import org.springframework.session.FindByIndexNameSessionRepository;
import org.springframework.session.MapSession;
/**
* Hazelcast {@link ValueExtractor} responsible for extracting principal name from the
* {@link MapSession} to be used with Hazelcast 4.
*
* @author Eleftheria Stein
* @since 2.4.0
*/
public class Hazelcast4PrincipalNameExtractor implements ValueExtractor<MapSession, String> {
@Override
@SuppressWarnings("unchecked")
public void extract(MapSession target, String argument, ValueCollector collector) {
String principalName = target.getAttribute(FindByIndexNameSessionRepository.PRINCIPAL_NAME_INDEX_NAME);
if (principalName != null) {
collector.addObject(principalName);
}
}
}
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