how to get path of custom xml file in magento2

Question

I created xml file in my module etc folder.i want to read this xml file and store into variable as a string.

\Magento\Framework\Filesystem\Directory\Read $read

$XMLGetRequest=$this->read->readFile('here i need xml file path');

Answer 1

Try to use \Magento\Framework\Xml\Parser and \Magento\Framework\Module\Dir\Reader

Something like this:

 class YourClass 
 {
        /**
         * @var \Magento\Framework\Module\Dir\Reader
         */
        protected $moduleDirReader;

        /**
         * @var \Magento\Framework\Xml\Parser
         */
        private $parser;

            ...

        public function getValue() 
        {
            $filePath = $this->moduleDirReader->getModuleDir('etc', 'Your_Module') 
               . '/paymentschema.xml'
            $parsedArray = $this->parser->load($filePath)->xmlToArray();
            return $parsedArray['xmlNodeName'];
        }
 }

Answer 2

there is actually a way to create a new configuration object in magento2 that can parse your configuration and validate it through an xsd all automatically.

I know they mentioned it in a fundamentals course but I can't find any reference now.

===UPDATE===

I think this is it: http://devdocs.magento.com/guides/v2.0/config-guide/config/config-create.html

Under Create Configuration Types