persistence.xml

I want to have my persistence.xml in conf folder of my app. How can I tell Persistence.createEntityManagerFactory that it should read it from there? The createEntityManagerFactory methods search for persistence.xml files within the META-INF directory of any CLASSPATH element. if your CLASSPATH contains the conf directory, you could place an EntityManagerFactory definition in conf/META-INF/persistence.xml If you are using EclipseLink you can set the persistence.xml location with the persistence unit property, "eclipselink.persistencexml". properties.put("eclipselink.persistencexml", "/org/acme

A quick search on the net reveals 3 or 4 variants how folks have been specifying xmlns and xsi:schemaLocation in persistence.xml . What would be the 'correct' manner to specify JPA version 2.1? I'm using: <persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"> Andrei I According to the official documentation it must be (like yours): <persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi

I would like to take advantage of JPA @Entity annotations not to declare class entities a J2SE persistence.xml file. What I'd like to avoid : <persistence-unit name="test" transaction-type="RESOURCE_LOCAL"> <provider>org.hibernate.ejb.HibernatePersistence</provider> <class>com.mycompany.entities.Class1</class> <class>com.mycompany.entities.Class2</class> <class>com.mycompany.entities.Class3</class> </persistence-unit> and here is what my actual persistence.xml look alike <persistence-unit name="test" transaction-type="RESOURCE_LOCAL"> <provider>org.hibernate.ejb.HibernatePersistence</provider>

Persistence units in persistence.xml are created during building the application. As I want to change the database url at runtime, is there any way to modify the persistence unit at runtime? I supposed to use different database other than pre-binded one after distributed. I'm using EclipseLink (JPA 2.1) N K Keep the persistence unit file (Persistence.xml) as it's. You can override the properties in it as follows. EntityManagerFactory managerFactory = null; Map<String, String> persistenceMap = new HashMap<String, String>(); persistenceMap.put("javax.persistence.jdbc.url", "<url>");

In the persistence.xml JPA configuration file, you can have a line like: <persistence-unit name="com.nz_war_1.0-SNAPSHOTPU" transaction-type="JTA"> or sometimes: <persistence-unit name="com.nz_war_1.0-SNAPSHOTPU" transaction-type=”RESOURCE_LOCAL”> My question is: What is the difference between transaction-type="JTA" and transaction-type=”RESOURCE_LOCAL” ? I also noticed some persistence.xml files with the transaction-type missing. Is it correct? Defaults Default to JTA in a JavaEE environment and to RESOURCE_LOCAL in a JavaSE environment. RESOURCE_LOCAL With <persistence-unit transaction-type=