Dobry den,
- zasadne nevyhody:
- pouzitie cache v entitno relacnych nastrojoch straca vyznam
- vzdy je potrebne volat rollback po neuspesnej transakcii (ak
pouzivate napriklad toplink, update sa pri neuspesnej operacii nemusi volat,
lebo neboli zavolane updaty :))
- pracne, a navyse neefektivne udrziavatelne - nutne mapovanie objektov
na vysledok volania procky
- komplikuje migraciu pri prechode na inu DB
- vyhody:
- ak procedury pouziva aj existujuca cast DB logiky
- nic ine ma nenapadlo :)
S pozdravom
Dalibor
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf
Of [email protected]
Sent: Friday, June 05, 2009 10:40 AM
To: [email protected]
Subject: DAO a "stored procedures only" pristup
Zdravim,
Rad bych se zeptal na nezavisly nazor. Je ve vasi firme bezne, ze jsou v
Java Enterprise aplikaci (Spring, EJB, cokoliv) vsechny CRUD operace
modelovany pres ulozene procedury v databazi? Nemluvim o komplexnich
operacich, ktere je nutne do storky davat, ale o kazde jednotlive
jednoduche operaci select, update, insert, delete, pricemz z DAO vrstvy
pak jen volate ulozenou proceduru?
Mate nejake vyrazne plusy ci minusy proc tento pristup
doporucit/zavrhnout?
Diky
Lukas Kubasek
Barclays Capital, Global IT Services Prague
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