JPA is an API that allows us to perform ORM operations in Java. Thanks to Hibernate, we can establish a connection between objects and the table in the database.

Q3. If JPA generates numeric value on his own, then how does the JPA implementation know which value to generate next? Does it consult with the database first to see what value was …

Dec 18, 2010 · The Java Persistence API (JPA) is a Java programming language application programming interface specification that describes the management of relational data in …

How to generate the JPA Criteria Metamodel The hibernate-jpamodelgen tool provided by Hibernate ORM can be used to scan the project entities and generate the JPA Criteria …

The JPA AttributeConverter is way too limited to map JSON object types, especially if you want to save them as JSON binary. You don’t have to create a custom Hibernate Type to get JSON …

entityManager.find(Customer.class, customerID); How can I see the SQL query for this call? Assuming I don't have access to database server to profile/monitor the calls, is there way to …

Mar 24, 2022 · JPA is a standard for Java object-relational mapping - it specifies a set of annotations and an interface - EntityManager to perform persistence operations with the …

How does @Version annotation work in JPA? I found various answers whose extract is as follows: JPA uses a version field in your entities to detect concurrent modifications to the same …

Oct 13, 2008 · Is it possible to set a default value for columns in JPA, and if, how is it done using annotations?

Aug 16, 2010 · We have a JPA application (using hibernate) and we need to pass a call to a legacy reporting tool that needs a JDBC database connection as a parameter. Is there a …