spring-data-elasticsearch SourceFilter 源码
spring-data-elasticsearch SourceFilter 代码
文件路径：/src/main/java/org/springframework/data/elasticsearch/core/query/SourceFilter.java
/*
* Copyright 2016-2022 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.query;
import org.springframework.data.elasticsearch.annotations.Field;
import org.springframework.lang.Nullable;
/**
* SourceFilter for providing includes and excludes. Using these helps in reducing the amount of data that is returned
* from Elasticsearch especially when the stored docuements are large and only some fields from these documents are
* needed. If the SourceFilter includes the name of a property that has a different name mapped in Elasticsearch (see
* {@link Field#name()} this will automatically be mapped.
*
* @author Jon Tsiros
* @author Peter-Josef Meisch
*/
public interface SourceFilter {
/**
* @return the name of the fields to include in a response.
*/
@Nullable
String[] getIncludes();
/**
* @return the names of the fields to exclude from a response.
*/
@Nullable
String[] getExcludes();
}
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