org.springframework.data.redis.core.convert.ReferenceResolver Maven / Gradle / Ivy
/*
* Copyright 2015-2018 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
*
* http://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.core.convert;
import java.util.Map;
import org.springframework.data.annotation.Reference;
import org.springframework.lang.Nullable;
/**
* {@link ReferenceResolver} retrieves Objects marked with {@link Reference} from Redis.
*
* @author Christoph Strobl
* @author Mark Paluch
* @since 1.7
*/
public interface ReferenceResolver {
/**
* @param id must not be {@literal null}.
* @param keyspace must not be {@literal null}.
* @return {@literal null} if referenced object does not exist.
*/
@Nullable
Map resolveReference(Object id, String keyspace);
}