spring-data-elasticsearch PropertyValueConverter 源码
spring-data-elasticsearch PropertyValueConverter 代码
文件路径：/src/main/java/org/springframework/data/elasticsearch/core/mapping/PropertyValueConverter.java
/*
* Copyright 2019-2022 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.elasticsearch.core.mapping;
/**
* Interface defining methods to convert the value of an entity-property to a value in Elasticsearch and back.
*
* @author Peter-Josef Meisch
* @author Sascha Woo
*/
public interface PropertyValueConverter {
/**
* Converts a property value to an elasticsearch value. If the converter cannot convert the value, it must return a
* String representation.
*
* @param value the value to convert, must not be {@literal null}
* @return The elasticsearch property value, must not be {@literal null}
*/
Object write(Object value);
/**
* Converts an elasticsearch property value to a property value.
*
* @param value the elasticsearch property value to convert, must not be {@literal null}
* @return The converted value, must not be {@literal null}
*/
Object read(Object value);
}
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