Mercurial > hg > orthanc-databases
diff PostgreSQL/Plugins/FastTotalSize.sql @ 72:8dd29af7c844 db-changes
new extension: FastTotalSize
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Fri, 04 Jan 2019 14:43:35 +0100 |
parents | |
children |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/PostgreSQL/Plugins/FastTotalSize.sql Fri Jan 04 14:43:35 2019 +0100 @@ -0,0 +1,41 @@ +CREATE TABLE GlobalIntegers( + key INTEGER PRIMARY KEY, + value BIGINT); + +INSERT INTO GlobalIntegers +SELECT 0, CAST(COALESCE(SUM(compressedSize), 0) AS BIGINT) FROM AttachedFiles; + +INSERT INTO GlobalIntegers +SELECT 1, CAST(COALESCE(SUM(uncompressedSize), 0) AS BIGINT) FROM AttachedFiles; + + + +CREATE FUNCTION AttachedFileIncrementSizeFunc() +RETURNS TRIGGER AS $body$ +BEGIN + UPDATE GlobalIntegers SET value = value + new.compressedSize WHERE key = 0; + UPDATE GlobalIntegers SET value = value + new.uncompressedSize WHERE key = 1; + RETURN NULL; +END; +$body$ LANGUAGE plpgsql; + +CREATE FUNCTION AttachedFileDecrementSizeFunc() +RETURNS TRIGGER AS $body$ +BEGIN + UPDATE GlobalIntegers SET value = value - old.compressedSize WHERE key = 0; + UPDATE GlobalIntegers SET value = value - old.uncompressedSize WHERE key = 1; + RETURN NULL; +END; +$body$ LANGUAGE plpgsql; + + + +CREATE TRIGGER AttachedFileIncrementSize +AFTER INSERT ON AttachedFiles +FOR EACH ROW +EXECUTE PROCEDURE AttachedFileIncrementSizeFunc(); + +CREATE TRIGGER AttachedFileDecrementSize +AFTER DELETE ON AttachedFiles +FOR EACH ROW +EXECUTE PROCEDURE AttachedFileDecrementSizeFunc();