Dynamic Index with SpringData ElasticSearch

Question

How can I parameterize a SpringData ElasticSearch index at runtime?

For example, the data model:

@Document(indexName = "myIndex")
public class Asset {

    @Id
    public String id;

    // ...
}

and the repository:

public interface AssetRepository extends ElasticsearchCrudRepository<Asset, String> {

    Asset getAssetById(String assetId);
}

I know I can replace myIndex with a parameter, but that parameter will be resolved during instantiation / boot. We have the same Asset structure for multiple clients / tenants, which have their own index. What I need is something like this:

public interface AssetRepository extends ElasticsearchCrudRepository<Asset, String> {

    Asset getAssetByIdFromIndex(String assetId, String index);
}

or this

repoInstance.forIndex("myOtherIndex").getAssetById("123");

I know this does not work out of the box, but is there any way to programmatically 'hack' it?

I believe neither do (found and studied both before). Those are about not hard coding the index name, but I need to be able to call to many different indexes. I only know the index name via a client parameter (not at compile or boot time) — Daniel
– Daniel, Commented Feb 24, 2016 at 7:30

Tony · Accepted Answer · 2017-07-03 00:44:36Z

2

Even though the bean is init at boot time, you can still achieve it by spring expression language:

@Bean
Name name() {
    return new Name();
}

@Document(indexName="#{name.name()}")
public class Asset{}

You can change the bean's property to change the index you want to save/search:

    assetRepo.save(new Asset(...));
    name.setName("newName");
    assetRepo.save(new Asset(...));

What should be noticed is not to share this bean in multiple thread, which may mess up your index.

Here is a working example.

edited Jul 3, 2017 at 0:44

answered Jun 30, 2017 at 6:27

Tony

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2 Comments

Nimble Fungus Over a year ago

receiving Page not found on the above link.

Bilal Demir Over a year ago

This solution is not thread safe.

Rahul · Accepted Answer · 2016-02-24 07:48:02Z

0

org.springframework.data.elasticsearch.repository.ElasticSearchRepository has a method

FacetedPage<T> search(SearchQuery searchQuery);

where SearchQuery can take multiple indices to be used for searching.

I hope it answers

answered Feb 24, 2016 at 7:48

Rahul

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