ADD file via upload

DateFunction.java

@@ -0,0 +1,31 @@
+package com.sen.api.functions;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+import com.sen.api.utils.StringUtil;
+
+public class DateFunction  implements Function{
+
+	@Override
+	public String execute(String[] args) {
+		if (args.length == 0 ||StringUtil.isEmpty(args[0])) {
+			return String.format("%s", new Date().getTime());
+		} else {
+			return getCurrentDate("yyyy-MM-dd");
+		}
+	}
+
+	private String getCurrentDate(String pattern) {
+		SimpleDateFormat format = new SimpleDateFormat(pattern);
+		String str = format.format(new Date());
+		return str;
+	}
+	
+	@Override
+	public String getReferenceKey() {
+		// TODO Auto-generated method stub
+		return "date";
+	}
+
+}