How to add timestamp and search old data

[agrawal (Nitesh)]

1. How to add current timestamp while indexing the data.
   Code:

    public class GetTestSuiteXML {
    	String path = "resources/b6f1-testsuite.xml";
    	int testcaseCount = 0;
    	int idCount = 1;
    	Map<String,String> map = new HashMap<String, String>();
    	
    	public void getTestSuiteDetail() throws IOException  {
    		
    		RestHighLevelClient client = new RestHighLevelClient(
                    RestClient.builder(new HttpHost("localhost", 9200, "http"))
                        .setRequestConfigCallback(new RestClientBuilder.RequestConfigCallback() {
                            public RequestConfig.Builder customizeRequestConfig(RequestConfig.Builder requestConfigBuilder) {
                                return requestConfigBuilder.setConnectTimeout(5000)
                                        .setSocketTimeout(100000);
                            }
                        })
                .setMaxRetryTimeoutMillis(100000)
            );
    		
    		
    		DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
    		try {
    			DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
    			Document xmlDocument = docBuilder.parse(new File(path));
    			XPath xPath = XPathFactory.newInstance().newXPath();
    			String expression = "/test-suite/name";			
    			XPathExpression expr = xPath.compile("/test-suite/name");		
    			String testSuiteName = (String) expr.evaluate(xmlDocument, XPathConstants.STRING);
    			System.out.println(testSuiteName);
    			map.put("testsuitename", testSuiteName);
    }}
   

In the above code, How to define/add current timestamp while indexing.