Hi George,
My idea is the following: if you don't have persistence.xml, then most
probably you don't have the dependencies either. Definitely the facet is
not installed, so Forge installs it for you by adding both the
persistence.xml and the dependencies.
But if you have persistence.xml already in your project in 99% of the cases
you have already setup the dependencies as well. So the facet is there and
Forge does not need to install it.
Regards,
Ivan
On Mon, Jul 6, 2015 at 11:06 PM, George Gastaldi <ggastald(a)redhat.com>
wrote:
Hi Ivan,
I am not sure this is enough. How can you assure that no compilation
errors would occur when @Entity or any other JPA-related class is used?
Best Regards,
George Gastaldi
On 07/06/2015 05:02 PM, Ivan St. Ivanov wrote:
Hi everybody,
I am working on a project that is not mainstream Java EE. Its target is
Tomcat, but it uses JPA 2.0 (Eclipselink). I have tailored the dependencies
in the pom.xml as well as the persistence.xml.
And now I want to use Forge to add some fields to the existing entities.
What I noticed is that when I run the jpa-new-field command for the first
time, it also installs the JPA facet. Which in turns adds some unwanted
dependencies to my pom.xml and completely overwrites persistence.xml.
I dig into the code and found that the isInstalled method of the JPA
Facet returns true when persistence.xml file does not exist and when
pom.xml does not contain some dependencies. These dependencies are
different for JPA 2.0 and 2.1, but are basically Hibernate JPA API and the
Java EE API.
As a result of this, projects that don't target Java EE or that use
different artifacts for it or for JPA are going to get their poms polluted
and their persistence.xml files overwritten.
So my proposal is to change the isInstalled method to only check for the
presence of persistence.xml. What do you think?
Regards,
Ivan
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