The Elasticsearch backend doesn't support embeddeds prefixes properly

Description

The current IndexedEmbedded handling doesn't support prefixes in a syntax other than "<fieldname>.": it relies on each field being exactly one component in a dot-separated path, which is wrong.

Note: there are tests that should pass when this ticket is resolved, and that are currently disabled in the pom.xml of the Elasticsearch module. Those tests will be (or have been) outlined as part of HSEARCH-2390.
Also, some relevant tests are disabled using the ElasticsearchSupportInProgress category.

Environment

None

Status

Assignee

Yoann Rodière

Reporter

Yoann Rodière

Labels

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Suitable for new contributors

None

Feedback Requested

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Components

Fix versions

Affects versions

5.6.0.Beta3

Priority

Blocker