spring-data-elasticsearch ReactiveMappingBuilder 源码
spring-data-elasticsearch ReactiveMappingBuilder 代码
文件路径：/src/main/java/org/springframework/data/elasticsearch/core/index/ReactiveMappingBuilder.java
/*
* Copyright 2021-2022 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.index;
import static org.springframework.util.StringUtils.*;
import reactor.core.publisher.Mono;
import org.springframework.data.elasticsearch.annotations.Mapping;
import org.springframework.data.elasticsearch.core.ReactiveResourceUtil;
import org.springframework.data.elasticsearch.core.convert.ElasticsearchConverter;
import org.springframework.data.elasticsearch.core.document.Document;
import org.springframework.data.elasticsearch.core.mapping.ElasticsearchPersistentEntity;
import org.springframework.data.mapping.MappingException;
import org.springframework.lang.Nullable;
/**
* Subclass of {@link MappingBuilder} with specialized methods To inhibit blocking calls
*
* @author Peter-Josef Meisch
* @since 4.3
*/
public class ReactiveMappingBuilder extends MappingBuilder {
public ReactiveMappingBuilder(ElasticsearchConverter elasticsearchConverter) {
super(elasticsearchConverter);
}
@Override
public String buildPropertyMapping(Class<?> clazz) throws MappingException {
throw new UnsupportedOperationException(
"Use ReactiveMappingBuilder.buildReactivePropertyMapping() instead of buildPropertyMapping()");
}
public Mono<String> buildReactivePropertyMapping(Class<?> clazz) throws MappingException {
ElasticsearchPersistentEntity<?> entity = elasticsearchConverter.getMappingContext()
.getRequiredPersistentEntity(clazz);
return getRuntimeFields(entity) //
.switchIfEmpty(Mono.just(Document.create())) //
.map(document -> {
if (document.isEmpty()) {
return buildPropertyMapping(entity, null);
} else {
return buildPropertyMapping(entity, document);
}
});
}
private Mono<Document> getRuntimeFields(@Nullable ElasticsearchPersistentEntity<?> entity) {
if (entity != null) {
Mapping mappingAnnotation = entity.findAnnotation(Mapping.class);
if (mappingAnnotation != null) {
String runtimeFieldsPath = mappingAnnotation.runtimeFieldsPath();
if (hasText(runtimeFieldsPath)) {
return ReactiveResourceUtil.readFileFromClasspath(runtimeFieldsPath).map(Document::parse);
}
}
}
return Mono.empty();
}
}
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