JPA和Hibernate Search的方法是什么？

Question

I have been searching around trying to find information about the approaches that JPA and Hibernate Search use towards querying data. There is a vast amount of data but most, if not all, contain very high level terminology. I am struggling to understand the differences between both of them. It would be great if someone can point me to something that explains both things in a more simple manner. I come from a Java (but never used databases with Java before) and PHP background (Used databases with PHP).

Cheers

Answer 1

JPA is a standard API to access relational databases. It's an ORM: object-relational mapper. It allows fetching/saving object graphs fom the database, instead of rows and columns.

Hibernate is an implementation of the JPA API.

Hibernate Search plugs into Hibernate in order to be able to execute full-text queries over the objects (or parts of the objects) that are persisted in the database. The goal is to be able to execute google-like queries, instead of (or in addition to) traditional SQL queries.

Hibernate Search uses Lucene behind the scene.