What is the best way to handle validity dates in applications ?

Posted by user214626 on Stack Overflow See other posts from Stack Overflow or by user214626
Published on 2010-04-06T04:05:18Z Indexed on 2010/04/06 4:13 UTC
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Filed under:

design-patterns

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database-design

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datastructures

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java

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hibernate

Hello,

How do we model these objects ?

Scenario 1: Price changes in a time period

EffectiveDate  ExpiryDate    Price
2009-01-01     2009-01-31    800$
2009-02-01     Null          900$

So, if the price changes to 910$ on 2009-02-15, then the system should automatically update the expiry date on the previous effective price to 2009-02-14, to keep it consistent.

Scenario 2: No price specified between 2009-02-01 to 2009-02-28

EffectiveDate  ExpiryDate    Price
2009-01-01     2009-01-31    800$
2009-03-01     Null          900$

So, if new price is specified for 2009-02-15 onwards , then the system should automatically set the expiry date on the record to be inserted to 2009-02-28, because already a record effective from 2009-03-01 exists.

Please suggest an effective way to handle these scenarios to model my framework, or are there any frameworks around that can do this .

Thanks

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