Is there a library for timeline composition in Java or Scala?

Question

I am looking for a library for Java or Scala that allows the logical compilation of time intervals to define periods such as "Monday-Friday, except 23: 00-23: 20 UTC". Something like defining a crontab interval, but with arbitrary compositions. Is there anything similar?

Answer 1

I don’t know if there is anything like that, but as a base you can look at JODA Time , an extensive Java library for all kinds of date and time processing.

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EDIT:

I just remembered that Play! Framework uses CRON expressions. It contains a CRON parser that may be useful to you:

https://github.com/playframework/play/blob/master/framework/src/play/libs/Time.java

He also got this Quartz parser, an open source task scheduler that might also interest you: http://www.quartz-scheduler.org/ p>

Answer 2

There is a Scala wrapper for Joda Time and scala-datetime , the current implementation of JSR-310.

Answer 3

Well, this is joda-time, not joda-date, but it definitely has interval mechanisms, so you don’t have to parse the interval formats you are interested in.

Note that Stephen has a new project based on JSR-310 called "threeten" - see http://threeten.sourceforge.net/ .