Saturday, 10 October 2015

Advantages of Hibernate over JDBC

Hibernate, Powerful ORM solution to map Java classes to database tables. It can be done using XML mapping files. In JDBC, it is developer’s responsibility to handle JDBC result set and convert it to Java objects done manually.

Hibernate supports caching mechanism which reduce the number of round trips between an application and the database automatically, which result to application performance. But in JDBC, caching is maintained by hand-coding.

Hibernate provided Dialect classes, so we no need to write SQL queries in hibernate, instead we use the methods provided by that API.

Hibernate has its own query language HQL (hibernate query language) which is database independent. If we want to change the database, we need to update the Dialect only. But in case of JDBC, we need to update all SQL queries.

This will also supports collections like List, Set, and Map (Only new collections).

Hibernate only have Un-checked exceptions, so no need to write try, catch, or no need to write throws.  Actually in hibernate we have the translator which converts checked to Un-checked. But in JDBC, all exceptions are checked exceptions, so we must write code in try, catch and throws.

Getting pagination in hibernate is quite simple.

Hibernate has capability to generate primary keys automatically while we are storing the records into database.

Hibernate, if it will not found any table in the database while inserting any record this will create the table. But in case of JDBC will raise an error like “View not exists”, and throws exception.

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