Link

class django_musicbrainz_connector.models.Link(*args, **kwargs)

PostgreSQL Definition

The link table is defined in the MusicBrainz Server as:

CREATE TABLE link ( -- replicate
    id                  SERIAL,
    link_type           INTEGER NOT NULL, -- references link_type.id
    begin_date_year     SMALLINT,
    begin_date_month    SMALLINT,
    begin_date_day      SMALLINT,
    end_date_year       SMALLINT,
    end_date_month      SMALLINT,
    end_date_day        SMALLINT,
    attribute_count     INTEGER NOT NULL DEFAULT 0,
    created             TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
    ended               BOOLEAN NOT NULL DEFAULT FALSE
    CONSTRAINT link_ended_check CHECK (
        (
        -- If any end date fields are not null, then ended must be true
        (end_date_year IS NOT NULL OR
        end_date_month IS NOT NULL OR
        end_date_day IS NOT NULL) AND
        ended = TRUE
        ) OR (
        -- Otherwise, all end date fields must be null
        (end_date_year IS NULL AND
        end_date_month IS NULL AND
        end_date_day IS NULL)
        )
    )
);