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Custom ObjectMapper
Peter-Josef Meisch edited this page Jan 2, 2021 · 3 revisions
ObjectMapper was removed in Spring Data Elasticsearch 4.0! |
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How to use custom ObjectMapper?
- Create new Class and implement Interface EntityMapper
public class CustomEntityMapper implements EntityMapper { public CustomEntityMapper(){ //custom configuration/implementation (e.g. FasterXML/jackson) } @Override public String mapToString(Object object) throws IOException { //mapping Object to String return null; } @Override public <T> T mapToObject(String source, Class<T> clazz) throws IOException { //mapping String to Object return null; } } - Define new bean and inject it into ElasticsearchTemplate
<bean name="elasticsearchTemplate" class="org.springframework.data.elasticsearch.core.ElasticsearchTemplate"> <constructor-arg name="client" ref="client"/> <constructor-arg name="entityMapper" ref="entityMapper"/> </bean> <bean name="entityMapper" class="org.springframework.data.elasticsearch.core.CustomEntityMapper"/> - Inject your custom implementation to template
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:elasticsearch="http://www.springframework.org/schema/data/elasticsearch" xsi:schemaLocation="http://www.springframework.org/schema/data/elasticsearch http://www.springframework.org/schema/data/elasticsearch/spring-elasticsearch-1.0.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd"> <elasticsearch:repositories base-package="com.xyz.acme"/> <elasticsearch:transport-client id="client" cluster-nodes="localhost:9300,someip:9300" /> <bean name="elasticsearchTemplate" class="org.springframework.data.elasticsearch.core.ElasticsearchTemplate"> <constructor-arg name="client" ref="client"/> <constructor-arg name="resultsMapper" ref="resultMapper"/> </bean> <bean name="entityMapper" class="org.springframework.data.elasticsearch.core.DefaultEntityMapper"/> <bean name="resultMapper" class="org.springframework.data.elasticsearch.core.CustomResultMapper"> <constructor-arg ref="entityMapper"/> </bean> </beans>Default implementation for EntityMapper used in project can be found here https://github.com/spring-projects/spring-data-elasticsearch/blob/master/src/main/java/org/springframework/data/elasticsearch/core/DefaultEntityMapper.java