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home > news > java technology > long or int to declare jpa numeric primary keys?

Long or int to declare JPA numeric primary keys?

I have just two arguments to avoid using long as type of the primary keys of JPA Entities: Integers IDs allow tables with ~2 billion records. Yes, you read well: max(Integer) = 2,147,483,647 the JPA pagination methods only accepts Integers Query setFirstResult(int startPosition) an  Query setMaxResults(int maxResult) Summary:only adopt data types long for your tables primary keys if your tables will have ore than 2 billion records or if you are not planning to use the default pagination features of JPA.


Date: September, 07 2009
Url: http://www.java.net/blog/felipegaucho/archive/2009/09/07/why-not-delcare-jpa-ids-type-long


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