The production in RFC 4122 (section 3, page 4), defines UUID string representation as UUID = time-low “-” time-mid “-” time-high-and-version “-” clock-seq-and-reserved clock-seq-low “-” node where each internal component is hex-encoded. Therefore, f47ac10b58cc4372a5670e02b2c3d479 is not a valid UUID representation.
Try this out: String superSecretId = “f000aa01-0451-4000-b000-000000000000”; UUID.fromString(superSecretId); I am using this in my project and it works. Make sure you import the right stuff.
It is not possible since a UUID is a 16-byte number per definition. But of course, you can generate 8-character long unique strings (see the other answers). Also be careful with generating longer UUIDs and substring-ing them, since some parts of the ID may contain fixed bytes (e.g. this is the case with MAC, DCE … Read more
Section 3 of RFC4122 provides the formal definition of UUID string representations. It’s 36 characters (32 hex digits + 4 dashes). Sounds like you need to figure out where the invalid 60-char IDs are coming from and decide 1) if you want to accept them, and 2) what the max length of those IDs might … Read more
in my case most ids will be generated within a large number of mobile clients, not within a limited set of servers. I wonder if in this case, there is a justified concern. That sounds like very bad architecture to me. Are you using a two-tier architecture? Why would the mobile clients have direct access … Read more
At least on MacOSX 10.5.x you might use the command line tool “uuidgen” to get your string e.g. $ uuidgen 054209C4-3873-4679-8104-3C18AE780512 there’s also an option -hdr with this comand that conveniently generates it in header style See man-page for further infos.
If you want that format try this: select regexp_replace(rawtohex(sys_guid()) , ‘([A-F0-9]{8})([A-F0-9]{4})([A-F0-9]{4})([A-F0-9]{4})([A-F0-9]{12})’ , ‘\1-\2-\3-\4-\5’) as FORMATTED_GUID from dual Example Results: FORMATTED_GUID ———————————— F680233E-0FDD-00C4-E043-0A4059C654C9
Function CreateGUID Dim TypeLib Set TypeLib = CreateObject(“Scriptlet.TypeLib”) CreateGUID = Mid(TypeLib.Guid, 2, 36) End Function This function will return a plain GUID, e.g., 47BC69BD-06A5-4617-B730-B644DBCD40A9. If you want a GUID in a registry format, e.g., {47BC69BD-06A5-4617-B730-B644DBCD40A9}, change the function’s last line to CreateGUID = Left(TypeLib.Guid, 38)
From MySQL 8.0 and above you could use UUID_TO_BIN: UUID_TO_BIN(string_uuid), UUID_TO_BIN(string_uuid, swap_flag) Converts a string UUID to a binary UUID and returns the result. (The IS_UUID() function description lists the permitted string UUID formats.) The return binary UUID is a VARBINARY(16) value. CREATE TABLE t (id binary(16) PRIMARY KEY); INSERT INTO t VALUES(UUID_TO_BIN(UUID(), true)); INSERT … Read more