COMPARISON OF DATA PERSISTENCE IN JAVA APPLICATIONS USING OBJECT DATABASES AND JPA

V diplomski nalogi pregledamo in primerjamo načine zagotavljanja trajnosti podatkov — objektov v Javanskih aplikacijah z uporabo objektnih podatkovnih baz in s pristopom Java Persistence API — JPA. Objektne baze omogočajo neposredno shranjevanje objektov v bazo in tako olajšajo zagotavljanje trajnosti pri objektno-orientiranem načinu programiranja. Pristop JPA podatke shranjuje v relacijske podatkovne baze in uporablja objektno-relacijske metapodatke za preslikavo objektov, ki se uporabljajo znotraj aplikacije v entitete, ki se nahajajo v podatkovni bazi. Zaradi lažje primerjave obeh smo isto aplikacijo izdelali z uporabo objektne baze in pristopa JPA. V času razvoja smo naredili praktično primerjavo razumevanja in uporabe obeh načinov.In the diploma thesis we examine and compare the manners of assuring data persistence – objects in Java applications with the use of object databases and with Java Persistence API – JPA approach. Object databases allow direct storage of objects into the database and therefore ease the assuring of persistence in object-oriented manner of programming. The JPA approach stores the data into relational databases and uses object-relational metadata for object mapping, which is used inside the application to entities in the database. For easier comparison of both, we produced the same application with the use of object base and JPA approach. During the development time, we made a practical comparison of understanding and use of both manners