Spring Data Elasticsearch @Document indexName defined at runtime

Question

Is it possible to specify dynamically (at runtime) the indexName for each @Document, for example, via a configuration file? Or is it possible to make @Document Spring environment (dev, prod) dependant?

Thank you!

Answer 1

The @Document annotation does not permit to pass the indexname in parameter directly. However I found a work around.

In my configuration class I created a Bean returning a string. In this string I injected the name of the index with @Value :

@Value("${etrali.indexname}")
private String indexName;

@Bean
public String indexName(){
    return indexName;
}

Afterward it is possible to inject the index into the @Documentation annotation like this :

@Document(indexName="#{@indexName}",type = "syslog_watcher")

It works for me, I hope it will help you.

Best regards

Answer 2

The solution from Bruno probably works but the "I created a Bean returning a string" part is a bit confusing.

Here is how I do it :

• Have the "index.name" key valued in an application.properties file loaded by "<context:property-placeholder location="classpath:application.properties" />"

• Create a bean named ConfigBean annotated with @Named or @Component

    @Named
    public class ConfigBean {

      @Value("${index.name}")
      private String indexName;

      public String getIndexName() {
        return indexName;
      }

      public void setIndexName(String indexName) {
        this.indexName = indexName;
      }      

    }

• Inject the value of configBean.getIndexName() into the "@Document" annotation using Spring EL : @Document(indexName = "#{ configBean.indexName }", type = "myType")

P.S. : You may achieve the same result directly using the implicit bean "systemProperties" (something like #{ systemProperties['index.name'] }) but it didn't work for me and it's pretty hard to debug since u can't resolve systemProperties in a programmatic context (https://jira.spring.io/browse/SPR-6651)