public Schedular(DBEngine<int, DBElement<int, string>> db)
{
//setting time interval for persisting of data
schedular.Interval = 2000;
schedular.AutoReset = true;
schedular.Enabled = true;
//defining method to be called when elapsed event occurs
//this method persists data into xml file from DBEngine.
schedular.Elapsed += (object source, ElapsedEventArgs e) =>
{
if (count++ < 5)
{
"Persisting to Test_DB.xml file".title();
db.create_xml_from_db(true);
}
else
{
"Stopped persisting to test_DB.xml file".title();
schedular.Enabled = false;
}
};
}
static void Main(string[] args)
{
//<------Create test DB----->
"Testing for PersistEngine package".title();
DBEngine<int, DBElement<int, string>> db = new DBEngine<int, DBElement<int, string>>();
DBEngine<string, DBElement<string, List<string>>> enum_db = new DBEngine<string, DBElement<string, List<string>>>();
for (int i = 0; i < 3; i++)
{
DBElement<int, string> elem = new DBElement<int, string>();
elem.name = "element";
elem.descr = "test element";
elem.timeStamp = DateTime.Now;
elem.children.AddRange(new List<int> { 1, 2, 3 });
elem.payload = "elem's payload";
elem.showElement();
db.insert(i, elem);
}
db.showDB();
WriteLine();
//<-------Save DB data to XML file--------->
"Demonstrating XDocument class".title('=');
WriteLine();
"Creating XML string using XDocument".title();
WriteLine();
db.create_xml_from_db(false);
//<---Empty DBEngine<int, DBElement<int, string>>--->
"Removing entries from Db if any".title();
if (db != null)
{
db.removeAll();
}
"Current DB state".title();
db.showDB();
WriteLine();
db.create_db_from_xml();
WriteLine();
//<---------Create test enum DB-------->
for (int i = 0; i < 3; i++)
{
DBElement<string, List<string>> elem = new DBElement<string, List<string>>();
elem.name = "element";
elem.descr = "test element";
elem.timeStamp = DateTime.Now;
elem.children.AddRange(new List<string> { "child1", "child2" });
elem.payload = new List<string> { "payload 1", "payload 2" };
elem.showEnumerableElement();
enum_db.insert(i.ToString(), elem);
}
enum_db.showEnumerableDB();
WriteLine();
//<-------Save enum_DB data to XML file--------->
"Creating XML string using XDocument".title();
enum_db.create_xml_from_enum_db(false);
WriteLine();
if (enum_db != null)
{
enum_db.removeAll();
}
//<----Empty DBEngine<string, DBElement<string, List<string>>----->
"Removing entries from enum Db if any".title();
if (enum_db != null)
{
string[] key_array = enum_db.Keys().ToArray();
foreach (string key in key_array)
{
enum_db.remove(key);
}
}
"Cureent enum DB state".title();
enum_db.showEnumerableDB();
WriteLine();
enum_db.create_enum_db_from_xml();
WriteLine();
WriteLine();
}
private void persist_database(out string str, ref IEnumerator<string> msg_enumerator, DBEngine<int, DBElement<int, string>> db)
{
str = "";
while (msg_enumerator.MoveNext())
{
if (msg_enumerator.Current == "Destination")
{
msg_enumerator.MoveNext();
Console.WriteLine(msg_enumerator.Current);
db.create_xml_from_db(false, msg_enumerator.Current);
str += "Database Persisted to " + msg_enumerator.Current + " file.";
return;
}
}
str += "Database persistence failed.";
}