How to express the exists clause with J开发者_开发知识库PA?First (we are on Oracle and have a DUAL Table):
I\'m trying to generate a database schema for my project using hbm2ddl. I\'m using JPA 2 annotations to specify how the schema should look like. Right now I\'m having some issues with inherited id\'s.
Consider the code in How do I delete all JPA entities? The documentation here http://download.开发者_运维知识库oracle.com/docs/cd/E17410_01/javaee/6/tutorial/doc/gjitv.html
In my testing code I need to have a blank/empty database at each method. Is there code that wo开发者_运维技巧uld achieve that, to call in the @Before of the test?Actually you always can use JPQL,
Are there any statements in JPA spec or official docs about certain JPA implementations which describe the behavior when we annotate entity\'s methods and when we annotate entity\'s fields?
I\'d like to convert the following SQL query: select * from region_tree country left outer join region_tree region
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I\'ve encountered a rather odd case in Java EE 6 where using the JPA EntityManager\'s find method along with an entity\'s primary id returns null, but using the Criteria API to select all entities wit
I\'m developing a JEE6-application, using JPA 2.0 and Hibernate 3.5.2-Final as the Provider (and MySQL 5.1.41). My Application Server is Glassfish V3.0.1.
So far, I always prefered to use Hibernate directly rather than JPA 1.0, because JPA was lacking some of the important features I needed and Hibernate provided: Criteria API, second level cache, unidi
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