Enhance Metadata OSAllLocators query to fully utilize the pagination fields.

[dwedul-figure]

Summary

The Metadata module's OSAllLocatorsRequest message contains a cosmos.base.query.v1beta1.PageRequest message, but the module's query_server OSAllLocators method does not use the query.Paginate or query.FilteredPaginate methods. So not all pagination functionality is available on that query, e.g. pagination using a next_key and key.

Problem Definition

Most of the other paginated queries have full pagination support, so not having it here can cause confusion and frustration. Additionally, there's no way to know how many results there are without getting all of them.

Proposal

Refactor the Metadata module's OSAllLocators query to use either the query.Paginate or query.FilteredPaginate function in order to enable full pagination support.

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[dwedul-figure]

These issues are all similar:

• Enhance Marker Holding query to fully utilize the pagination fields. #400
• Enhance Metadata OSLocatorsByURIRequest query to fully utilize the pagination fields. #401
• Enhance Metadata OSAllLocators query to fully utilize the pagination fields. #402