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Diffstat (limited to 'lib/qualified_name.ml')
| -rw-r--r-- | lib/qualified_name.ml | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/qualified_name.ml b/lib/qualified_name.ml new file mode 100644 index 0000000..b6d01bb --- /dev/null +++ b/lib/qualified_name.ml @@ -0,0 +1,31 @@ +(** Fully qualified relation name: [multigroup:schema:relation]. + + Splits on [:], fills defaults for missing parts. + - ["relation"] -> { multigroup=""; schema="public"; relation } + - ["schema:relation"] -> { multigroup=""; schema; relation } + - ["mg:schema:relation"] -> { multigroup=mg; schema; relation } +*) + +type t = { + multigroup : string; + schema : string; + relation : string; +} + +let default_schema = "public" + +let parse s = + match String.split_on_char ':' s with + | [ rel ] -> { multigroup = ""; schema = default_schema; relation = rel } + | [ schema; rel ] -> { multigroup = ""; schema; relation = rel } + | [ mg; schema; rel ] -> { multigroup = mg; schema; relation = rel } + | _ -> { multigroup = ""; schema = default_schema; relation = s } + +let make ?(multigroup = "") ?(schema = default_schema) relation = + { multigroup; schema; relation } + +let to_string { multigroup; schema; relation } = + if multigroup = "" then schema ^ ":" ^ relation + else multigroup ^ ":" ^ schema ^ ":" ^ relation + +let to_key { schema; relation; _ } = schema ^ ":" ^ relation |