CODEWITHSUNDEEP
javajpapersistence.xml
neogurb
neogurb

Reputation: 690

Modify persistence.xml on runtime

I'm developping a program that uses JPA, and I deployed it in a single jar. I wish to modify (or ask to the user, in an menú item) the configuration of the connection data with the database server.

It's possible to modify the data (user, password, ip) of the server "on the fly"?

(I apologize my bad english)

Upvotes: 3

Views: 2119

Answers (2)

Simiil
Simiil

Reputation: 2311

how about making a HashMap<String,Object> containing your options and passing it to Persistence.createEntityManagerFactory("unitName",map)?

From the Docs:

public static EntityManagerFactory createEntityManagerFactory(String persistenceUnitName, Map properties)

Create and return an EntityManagerFactory for the named persistence unit using the given properties.

Source

Upvotes: 3

DataNucleus
DataNucleus

Reputation: 15577

The JPA spec doesn't allow for dynamic modification of persistence-units. Some implementations may provide an implementation-specific way of defining a persistence-unit dynamically. With DataNucleus JPA we do it as per the foot of this page

Upvotes: 2

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