# `Lotus.Source.Resolvers.Static`
[🔗](https://github.com/elixir-lotus/lotus/blob/v1.0.0/lib/lotus/source/resolvers/static.ex#L1)

Default source resolver that reads from static `data_sources` configuration.

Resolution priority:

  1. `source_opt` as string name — lookup in data_sources, wrap in adapter
  2. `source_opt` as module — reverse lookup (find name for module), wrap in adapter
  3. `fallback` as string name — lookup
  4. `fallback` as module — reverse lookup
  5. Both nil — use `Config.default_data_source()`
  6. Not found — `{:error, :not_found}`

## Entry forms

A `:data_sources` entry is one of:

  * an `Ecto.Repo` module — matched against the built-in Ecto adapters by
    the repo's Ecto adapter, falling back to the generic Ecto adapter.

  * `%{adapter: MyAdapter, ...}` — the **canonical** form. The named module
    is used directly; the whole map is passed to its `wrap/2` as state.
    Prefer this: it is explicit, skips `can_handle?/1` probing, and cannot
    become ambiguous.

  * any other term — offered to each module in `:source_adapters` via
    `can_handle?/1`. Exactly one must claim it. If several do, resolution
    raises rather than silently picking the first; name the adapter in the
    entry to settle it.

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*Consult [api-reference.md](api-reference.md) for complete listing*