Export helpers function to a separate file

initdb/02_5_signalk_api_deps.sql

@@ -156,70 +156,6 @@ COMMENT ON VIEW
     api.versions_view
     IS 'Expose as a table view app and system version to API';
 
-CREATE OR REPLACE FUNCTION public.isnumeric(text) RETURNS BOOLEAN AS
-$isnumeric$
-DECLARE x NUMERIC;
-BEGIN
-    x = $1::NUMERIC;
-    RETURN TRUE;
-EXCEPTION WHEN others THEN
-    RETURN FALSE;
-END;
-$isnumeric$
-STRICT
-LANGUAGE plpgsql IMMUTABLE;
--- Description
-COMMENT ON FUNCTION
-    public.isnumeric
-    IS 'Check typeof value is numeric';
-
-CREATE OR REPLACE FUNCTION public.isboolean(text) RETURNS BOOLEAN AS
-$isboolean$
-DECLARE x BOOLEAN;
-BEGIN
-    x = $1::BOOLEAN;
-    RETURN TRUE;
-EXCEPTION WHEN others THEN
-    RETURN FALSE;
-END;
-$isboolean$
-STRICT
-LANGUAGE plpgsql IMMUTABLE;
--- Description
-COMMENT ON FUNCTION
-    public.isboolean
-    IS 'Check typeof value is boolean';
-
-create or replace function public.isdate(s varchar) returns boolean as $$
-begin
-  perform s::date;
-  return true;
-exception when others then
-  return false;
-end;
-$$ language plpgsql;
--- Description
-COMMENT ON FUNCTION
-    public.isdate
-    IS 'Check typeof value is date';
-
-CREATE OR REPLACE FUNCTION public.istimestamptz(text) RETURNS BOOLEAN AS
-$isdate$
-DECLARE x TIMESTAMP WITHOUT TIME ZONE;
-BEGIN
-    x = $1::TIMESTAMP WITHOUT TIME ZONE;
-    RETURN TRUE;
-EXCEPTION WHEN others THEN
-    RETURN FALSE;
-END;
-$isdate$
-STRICT
-LANGUAGE plpgsql IMMUTABLE;
--- Description
-COMMENT ON FUNCTION
-    public.istimestamptz
-    IS 'Check typeof value is TIMESTAMP WITHOUT TIME ZONE';
-
 DROP FUNCTION IF EXISTS api.update_user_preferences_fn;
 -- Update/Add a specific user setting into preferences
 CREATE OR REPLACE FUNCTION api.update_user_preferences_fn(IN key TEXT, IN value TEXT) RETURNS BOOLEAN AS
@@ -255,47 +191,3 @@ $update_user_preferences$ language plpgsql security definer;
 COMMENT ON FUNCTION
     api.update_user_preferences_fn
     IS 'Update user preferences jsonb key pair value';
-
--- https://stackoverflow.com/questions/42944888/merging-jsonb-values-in-postgresql
-CREATE OR REPLACE FUNCTION public.jsonb_recursive_merge(A jsonb, B jsonb)
-RETURNS jsonb LANGUAGE SQL AS $$
-    SELECT
-        jsonb_object_agg(
-            coalesce(ka, kb),
-            CASE
-            WHEN va isnull THEN vb
-            WHEN vb isnull THEN va
-            WHEN jsonb_typeof(va) <> 'object' OR jsonb_typeof(vb) <> 'object' THEN vb
-            ELSE jsonb_recursive_merge(va, vb) END
-        )
-        FROM jsonb_each(A) temptable1(ka, va)
-        FULL JOIN jsonb_each(B) temptable2(kb, vb) ON ka = kb
-$$;
--- Description
-COMMENT ON FUNCTION
-    public.jsonb_recursive_merge
-    IS 'Merging JSONB values';
-
--- https://stackoverflow.com/questions/36041784/postgresql-compare-two-jsonb-objects
-CREATE OR REPLACE FUNCTION public.jsonb_diff_val(val1 JSONB,val2 JSONB)
-RETURNS JSONB AS $jsonb_diff_val$
-    DECLARE
-    result JSONB;
-    v RECORD;
-    BEGIN
-    result = val1;
-    FOR v IN SELECT * FROM jsonb_each(val2) LOOP
-        IF result @> jsonb_build_object(v.key,v.value)
-            THEN result = result - v.key;
-        ELSIF result ? v.key THEN CONTINUE;
-        ELSE
-            result = result || jsonb_build_object(v.key,'null');
-        END IF;
-    END LOOP;
-    RETURN result;
-    END;
-$jsonb_diff_val$ LANGUAGE plpgsql;
--- Description
-COMMENT ON FUNCTION
-    public.jsonb_diff_val
-    IS 'Compare two jsonb objects';