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RepoStreamer.chunk_stream -> Repo.chunk_stream

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This commit is contained in:
Maksim Pechnikov 2020-09-16 09:47:18 +03:00
commit 599f8bb152
6 changed files with 47 additions and 40 deletions
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lib/pleroma/repo.ex
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@ -49,6 +49,20 @@ defmodule Pleroma.Repo do
end
end
@doc """
Returns a lazy enumerable that emits all entries from the data store matching the given query.
`returns_as` use to group records. use the `batches` option to fetch records in bulk.
## Examples
# fetch records one-by-one
iex> Pleroma.Repo.chunk_stream(Pleroma.Activity.Queries.by_actor(ap_id), 500)
# fetch records in bulk
iex> Pleroma.Repo.chunk_stream(Pleroma.Activity.Queries.by_actor(ap_id), 500, :batches)
"""
@spec chunk_stream(Ecto.Query.t(), integer(), atom()) :: Enumerable.t()
def chunk_stream(query, chunk_size, returns_as \\ :one) do
# We don't actually need start and end funcitons of resource streaming,
# but it seems to be the only way to not fetch records one-by-one and