spring-session DelegatingIndexResolver 源码
spring-session DelegatingIndexResolver 代码
文件路径：/spring-session-core/src/main/java/org/springframework/session/DelegatingIndexResolver.java
/*
* Copyright 2014-2019 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;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* An {@link IndexResolver} that resolves indexes using multiple @{link IndexResolver}
* delegates.
*
* @param <S> the type of Session being handled
* @author Vedran Pavic
* @since 2.2.0
*/
public class DelegatingIndexResolver<S extends Session> implements IndexResolver<S> {
private final List<IndexResolver<S>> delegates;
public DelegatingIndexResolver(List<IndexResolver<S>> delegates) {
this.delegates = Collections.unmodifiableList(delegates);
}
@SafeVarargs
public DelegatingIndexResolver(IndexResolver<S>... delegates) {
this(Arrays.asList(delegates));
}
public Map<String, String> resolveIndexesFor(S session) {
Map<String, String> indexes = new HashMap<>();
for (IndexResolver<S> delegate : this.delegates) {
indexes.putAll(delegate.resolveIndexesFor(session));
}
return indexes;
}
}
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