Add support for aggregations via annotated repository methods. [DATAMONGO-2153]

[spring-projects-issues]

Christoph Strobl opened DATAMONGO-2153 and commented

public interface MyRepo extends MongoRepsitory<...> {

  @Aggregate(pipeline = "{'$group': { _id: '$templateId', maxVersion : { $max : '$version'} } }" )
  MyProjectedType findTemplateWithMaxVersion();

}

The above should be able to load the pipeline from a file, just like the @Query annotation and support placeholders so that one might use input variables within the aggregation

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Issue Links:

• DATAMONGO-2116 Ability to add a comment to an aggregation pipeline
  ("is duplicated by")

Referenced from: pull request #743