allow @JoinColumns(value) to be empty and defaulted #640

	#
	# Copyright (c) 2022, 2024 Contributors to the Eclipse Foundation
	#
	# This program and the accompanying materials are made available under the
	# terms of the Eclipse Public License v. 2.0 which is available at
	# http://www.eclipse.org/legal/epl-2.0,
	# or the Eclipse Distribution License v. 1.0 which is available at
	# http://www.eclipse.org/org/documents/edl-v10.php.
	#
	# SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
	#

	name: Persistence API

	on:
	pull_request:
	push:

	jobs:
	build:
	name: Test on JDK ${{ matrix.java_version }}
	runs-on: ubuntu-latest

	strategy:
	matrix:
	java_version: [ 21 ]

	steps:
	- name: Checkout for build
	uses: actions/checkout@v4
	- name: Set up JDK
	uses: actions/setup-java@v4
	with:
	distribution: 'zulu'
	java-version: ${{ matrix.java_version }}
	cache: maven
	- name: Verify
	# GH runs against the merge done in the current year, so let's just check modified files do have some copyright
	run: \|
	cd api
	mvn -B -U -C -V clean verify org.glassfish.copyright:glassfish-copyright-maven-plugin:check -Poss-release -Dgpg.skip=true -Dcopyright.ignoreyear=true

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