Allow spring data couchbase annotations to be used in meta-annotation context

As a developer, I want to be able to easily choose between using Couchbase or other simplar repositories that all use the same document and change the implementing repository at runtime, for example by profile configuration. This can be achieved by adding annotations required by each repository implementation to each field in the document.

For example, if I wanted to support both Couchbase and DynamoDB, I might have the following

class Entity {

   @Id

   @DynamoDBHashKey

   @DynamoDBAutoGeneratedKey

   public String id;

   @Field

   @DynamoDBAttribute

   public String field1;

   @Field

   @DynamoDBAttribute

   public String field2;

}

The annotation on the field is repetitive. (The same idea applies to the ID if I have multiple entity definitions).

To eliminate the repetition and reduce the opportunity for defects, I would like to be able to define my own annotation, for example:

 @Id

 @DynamoDBHashKey

 @DynamoDBAutoGeneratedKey

 @Retention(RetentionPolicy.RUNTIME)

 @Target({ ElementType.FIELD })

 public @interface MyId {}

AND

 @Field

 @DynamoDBAttribute

 public @interface MyField {}

Then, I an write the simpler

class Entity {

 @MyId

 public String id;

 @MyField

 public String field1;

 @MyField

 public String field2;

}

This is currently not possible because the target for the annotations only permits fields, but it is trivial to change.

NOTE While this is not my current use case, it would also be possible to use this capability to create combinations that include JSR 380 annotations (for example @NotNull), again for the objective of not repeating yourself.