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Manual
2

UPDATE SET Queries in JPA/JPQL

Existing entity objects can be updated, as explained in chapter 2, by: Retrieving the entity ... a separate EntityManager for UPDATE queries. As with any operation that modifies the database, UPDATE ... Country c SET c.population = c.population * 11 / 10 UPDATE Country AS c SET c.population = c.population
Tutorial
2

Step 4: Add a Controller Class

New > Java Class... Enter GuestController as the class name - use exactly that case sensitive class ... ModelAndView("guest.jsp", "guestDao", guestDao); } } The GuestController class is defined as ... ("guest.jsp") and passes the GuestDao component to the JSP as a request attribute (whose name
Manual
2

UPDATE SET Queries in JPA/JPQL [2011-11-22]

Existing entity objects can be updated, as explained in chapter 2, by: Retrieving the entity ... a separate EntityManager for UPDATE queries. As with any operation that modifies the database, UPDATE ... Country c SET c.population = c.population * 11 / 10 UPDATE Country AS c SET c.population = c.population
Manual
2

Deleting JPA Entity Objects

method or implicitly as a result of a cascade operation. Explicit Remove In order to delete an object ... is automatically cascaded to the referenced Address instance, which is then automatically removed as ... , such as when setting the address field to null or to another Address object. If orphanRemoval=true
FAQ
2

Is ObjectDB better than competing object databases?

Data Objects (JDO) API than competing object databases. By using a standard API such as JPA ... database by using an ORM JPA provider such as Hibernate, EclipseLink or Open JPA. Another advantage of using a popular API such as JPA is the availability of experienced developers, supporting
Tutorial
2

Step 3: Define a Spring DAO Component

) that we will define in this step as a Spring MVC component: Open the [New Java Class] dialog box by right ... . The package name should be guest. Enter GuestDao as the class name - use exactly that case sensitive class ... component class and injects an instance of the DAO component class into the controller, as shown in
Manual
2

Server User List

addresses. For instance, "127.0.0.1" (which represents the local machine), as shown above, restricts ... to 192.18.194.255, as well as from 127.0.0.1. The admin attribute (whose value is "true" or "false ... and if specified for the master ("$default") it is interpreted by every concrete user definition as
JPA Doc
2

Criteria Query Selection and Results

clauses and for representing query results as tuples. SELECT Clause Elements The content of the SELECT ... of Expression, any criteria expression can be used as the SELECT clause content. Multiple selection ... . Query Results as Tuples JPA 2 introduces a new way to represent multi selection results (i.e. results
Tutorial
2

Step 4: Add a Controller Class

) and selecting New > Class. The package name should be guest. Enter GuestController as the class name - use ... is defined as a Spring managed web controller using the @Controller annotation. A GuestDao component ... a target JSP ("guest.jsp") and passes the GuestDao component to the JSP as a request attribute (whose name
Forum
2

Error 363 - Failed to read value of inverse relationship

works fine and the relationships (both forward and inverse) behave as expected in the Object DB Explorer, however when I try to read the Event type, I'm getting the following exception. As far as I ... the problem, I will be grateful. I need to know the answer as soon as possible due to time constraints