How to specify JPA 2.1 in persistence.xml?

Question

A quick search on the Net reveals three or four 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">

Derzon

Configuration file OCD... welcome to the club. – Sanders

Answer 1

According to the official documentation it must be (like yours):

<persistence 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"
             version="2.1">
    ...
</persistence>

Largess

+1. @Derzon As an addition, to point out the exact place where this configuration is shown, one can see the related XSD file (starting from line 50): xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd – Brand