UUID
How can I map this polymorphism in Hibernate, using XML, without creating extra parent tables?
I\'m tryi开发者_StackOverflow中文版ng to map a tree of POJOs in Hibernate so that I can (a) concisely use UUIDs for primary keys everywhere and (b) externally impose set-like relationships between oth[详细]
2023-02-01 04:02 分类：问答Unique serial number in a java web application
I\'ve been wondering what\'s the correct practice for generating unique ids? The thing is in my web app I\'ll have a plugin system, when a user registers a plugin I want to generate a unique serial ID[详细]
2023-02-01 03:25 分类：问答How to get 32 bits unique number in Java?
I need to generate an unique number of 32 bits in Java. I need to return the number as Java int, which is required by the interface. Can you please share some ideas on this?[详细]
2023-01-30 09:29 分类：问答Problems mapping UUID in JPA/hibernate
According to the documentation, hibernate 3.6 should have support for the java.util.UUID type. But when I map it like:[详细]
2023-01-28 22:07 分类：问答Math question regarding Python's uuid4
I\'m not great with statistical mathematics, etc. I\'ve been wondering, if I use the following: import uuid[详细]
2023-01-27 16:49 分类：问答Generating 8-character only UUIDs
UUID libraries generate 32-character UU开发者_StackOverflow社区IDs. I want to generate 8-character only UUIDs, is it possible?It is not possible since a UUID is a 16-byte number per definition. But o[详细]
2023-01-26 23:01 分类：问答Make UUID shorter (Hex to ASCII conversion)
In my web application one model uses identifier that was generated by some UUID tool. As I want that identifier to be part of the URL I am investigating methods to shorten that UUID string. 开发者_运维[详细]
2023-01-26 21:01 分类：问答Sequential UID set generation for MySQL Char() or other Field
Tried Googling but: Question: Best way to externally generate Sequential UID values for a MySQL field which must be representable as a string.[详细]
2023-01-25 15:04 分类：问答Rails - Saved uuid's length is shorter than 32 characters
I am looking to generate an ID that is not guessable (i.e. long string of random characters). I am currently using https://github.com/sporkmonger/uuidtools:[详细]
2023-01-24 18:29 分类：问答Generate uuid in windows postgresql
I have a postgresql 9 installation on windows, which doesn\'t have built in uuid generator. There is OSSD package, which can be bound to postgresql as uuid g开发者_开发问答enerator, but it\'s for *nix[详细]
2023-01-24 12:42 分类：问答
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