how to make unique primary key increce automatically

sunhongfeng Sep 6, 2001 11:35 AM

i want to make a unique primary key increase one by one in a list of entity bean.
it seems when i create a new entitiy bean,i have to assign its value first. but i want to get the value automatically increase one bye one. if i not use ejb, i can directly quote a value from a Oracle sequence , but in ejb how to do that?

1. Re: how to make unique primary key increce automatically

jsk Sep 7, 2001 2:52 AM (in response to sunhongfeng)

Maybe you can do something ejbPostCreate method to set the key value inside the ejb. Try looking at the docs on this method.

Jesper
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2. Re: how to make unique primary key increce automatically

sunhongfeng Sep 7, 2001 4:46 AM (in response to sunhongfeng)

hi jesper,
the primary key is used to create ejb. how can you get it in ejbPostCreate()?
cheers.
eric
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3. Re: how to make unique primary key increce automatically

p_d_austin Sep 7, 2001 5:22 AM (in response to sunhongfeng)

Check out this description of primary key generation strategies http://www.theserverside.com/resources/review/ejbpatterns-primarykeystrategies-sept3.zip
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