24 | JBoss 7 startup fails]] (MSC service thread 1-3) Exception sending context initialized event to listener instance of class ... thread 1-3) Exception sending context destroyed event to listener instance of class guest ... -INF dir contains: context.xml <?xml version="1.0" encoding="UTF-8"?> <Context |
20 | Database is erased after deploying a new web application version That may be the problem. The servlet context is available in specific listener and servlet methods ... manager? Should I set some kind of listener? Yotam Yotam Boaz You can set a listener for creating and destroying the EntityManagerFactory: https://www.objectdb.com/tutorial/jpa/eclipse/web/listener |
5 | Database Connection using JPA) and listening on the specified port (the default is 6136 when not specified). The path indicates |
5 | JPA Annotations for ClassesJPA defines three types of persistable classes which are set by the following annotations: Chapter 2 of the ObjectDB manual explains these annotations in detail. Entity and mapped super classes can be further configured by annotations that specify cache preferences and lifecycle event listener |
4 | DELETE Queries in JPA/JPQL context has been removed from the database by a DELETE query. Therefore, it is a good practice to use |
4 | JPA Query API ObjectDB. In the context of the queries above, if there are no Country instances in the database |
4 | Query Parameters in JPA are defined implicitly by appearing in the query string. The parameter type is inferred by the context. In |
4 | Database Schema Evolution to any numeric type. In this context numeric types are: byte, short, char, int, long, float, double |
4 | CRUD Database Operations with JPA a managed object (usually by retrieval) and invoke the remove method within the context |
4 | UPDATE SET Queries in JPA/JPQL its persistence context has been modified by an UPDATE query. Therefore, it is a good practice to use |
