spring-data-redis ReturnType 源码
spring-data-redis ReturnType 代码
文件路径：/src/main/java/org/springframework/data/redis/connection/ReturnType.java
/*
* Copyright 2013-2022 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.connection;
import java.util.List;
import org.springframework.lang.Nullable;
import org.springframework.util.ClassUtils;
/**
* Represents a data type returned from Redis, currently used to denote the expected return type of Redis scripting
* commands
*
* @author Jennifer Hickey
* @author Christoph Strobl
* @author Mark Paluch
*/
public enum ReturnType {
/**
* Returned as Boolean
*/
BOOLEAN,
/**
* Returned as {@link Long}
*/
INTEGER,
/**
* Returned as {@link List<Object>}
*/
MULTI,
/**
* Returned as {@literal byte[]}
*/
STATUS,
/**
* Returned as {@literal byte[]}
*/
VALUE;
/**
* @param javaType can be {@literal null} which translates to {@link ReturnType#STATUS}.
* @return never {@literal null}.
*/
public static ReturnType fromJavaType(@Nullable Class<?> javaType) {
if (javaType == null) {
return ReturnType.STATUS;
}
if (ClassUtils.isAssignable(List.class, javaType)) {
return ReturnType.MULTI;
}
if (ClassUtils.isAssignable(Boolean.class, javaType)) {
return ReturnType.BOOLEAN;
}
if (ClassUtils.isAssignable(Long.class, javaType)) {
return ReturnType.INTEGER;
}
return ReturnType.VALUE;
}
}
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