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17 lines
736 B
SQL
17 lines
736 B
SQL
-- NIP-AR current heads and acceptance ledger are independent of event retention.
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CREATE TABLE artifact_heads (
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community_id UUID NOT NULL REFERENCES communities(id),
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artifact_id UUID NOT NULL,
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event_id BYTEA NOT NULL CHECK (length(event_id) = 32),
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channel_id UUID NOT NULL,
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artifact_type TEXT NOT NULL,
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root BYTEA,
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deleted BOOLEAN NOT NULL DEFAULT false,
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PRIMARY KEY (community_id, artifact_id)
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);
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CREATE INDEX artifact_heads_event ON artifact_heads (community_id, event_id);
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-- The relay does not expire events. Any future row retention or partition
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-- retirement must skip payloads referenced by `artifact_heads.event_id`
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-- (NIP-AR: expiring earlier revisions MUST NOT remove the current revision).
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