fix: allow order array to be empty #125

	name: CI

	on:
	push:
	pull_request:
	schedule:
	- cron: '0 0 * * 0'

	jobs:
	test:
	runs-on: ubuntu-latest

	strategy:
	matrix:
	jdk-version:
	- 17

	steps:
	- name: Checkout repository
	uses: actions/checkout@v3

	- name: Set up JDK ${{ matrix.jdk-version }}
	uses: actions/setup-java@v3
	with:
	java-version: ${{ matrix.jdk-version }}
	distribution: adopt
	cache: maven

	- name: Test with Maven
	run: mvn -B test

	test-postgres:
	runs-on: ubuntu-latest

	services:
	postgres:
	image: postgres
	env:
	POSTGRES_PASSWORD: postgres
	options: >-
	--health-cmd pg_isready
	--health-interval 10s
	--health-timeout 5s
	--health-retries 5
	ports:
	- 5432:5432

	steps:
	- name: Checkout repository
	uses: actions/checkout@v3

	- name: Set up JDK 17
	uses: actions/setup-java@v3
	with:
	java-version: 17
	distribution: adopt
	cache: maven

	- name: Test with Maven
	run: mvn -B test
	env:
	spring_profiles_active: pgsql

	test-mysql:
	runs-on: ubuntu-latest

	services:
	mysql:
	image: mysql:5.7
	env:
	MYSQL_DATABASE: test
	MYSQL_ROOT_PASSWORD: changeit
	options: >-
	--health-cmd="mysqladmin ping"
	--health-interval 10s
	--health-timeout 5s
	--health-retries 5
	ports:
	- 3306:3306

	steps:
	- name: Checkout repository
	uses: actions/checkout@v3

	- name: Set up JDK 17
	uses: actions/setup-java@v3
	with:
	java-version: 17
	distribution: adopt
	cache: maven

	- name: Test with Maven
	run: mvn -B test
	env:
	spring_profiles_active: mysql

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