static void Main(string[] args)
{
DBEngine <string, DBElement <string, List <string> > > db = new DBEngine <string, DBElement <string, List <string> > >();
ItemFactory <int, string> itemFactory = new ItemFactory <int, string>();
"Demonstrating Requirement #2".title();
DBElement <string, List <string> > elem = new DBElement <string, List <string> >();
elem.name = "element";
elem.descr = "test element";
elem.timeStamp = DateTime.Now.AddDays(-4);
elem.children.AddRange(new List <string> {
"1", "2", "3 "
});
elem.payload = new List <string> {
"elem's payload"
};
WriteLine("\n Item to be inserted.. \n");
elem.showEnumerableElement();
db.insert("1", elem);
db.showEnumerableDB();
WriteLine();
WriteLine("\n Inserting second element into DB :");
DBElement <string, List <string> > elem2 = new DBElement <string, List <string> >();
elem2.name = "element2";
elem2.descr = "test element2";
elem2.timeStamp = DateTime.Now;
elem2.children.AddRange(new List <string> {
"1", "2", "3", "4"
});
elem2.payload = new List <string> {
"elem's payload"
};
WriteLine("\nItem to be inserted.. \n");
elem2.showElement();
db.insert("2", elem2);
WriteLine("\n\n DB after insertion:");
db.showEnumerableDB();
"Persisting the database to XML:".title('_');
db.toXml();
"Augumenting database from XML".title('_');
db.restoreDatabase();
db.showEnumerableDB();
}
/// <summary>
/// Queries the database.
/// </summary>
/// <param name="input">The input.</param>
/// <returns></returns>
public String QueryDatabase(String input)
{
String result = String.Empty;
var dbElement = ParseXml(input);
switch (dbElement.dbOperation)
{
case "Add":
db.insert(dbElement.key, dbElement);
result = "Key " + dbElement.key + " inserted successfully!";
break;
case "Edit":
db.replaceKeyInstance(dbElement.key, dbElement);
result = "Key " + dbElement.key + "'s value modified successfully!";
break;
case "Delete":
if (db.delete(dbElement.key))
{
result = "Key " + dbElement.key + " deleted successfully!";
}
else
{
result = "Key " + dbElement.key + " not found!!";
}
break;
case "SearchChild":
var children = db.searchChildren(dbElement.key);
result = "Children are " + string.Join(", ", children.ToArray());
break;
case "Search":
var value = db.searchValue(dbElement.key);
if (value != null)
{
result = "Key " + dbElement.key + " found!!!!!\n\n";
result += value.showEnumerableElement();
}
else
{
result = "Key " + dbElement.key + " not found!!";
}
break;
case "Persist":
db.toXml();
result = "Database persisted successfully";
break;
case "Restore":
db.restoreDatabase();
result = "Database successfully restored!!";
break;
default: break;
}
string dbView = db.showEnumerableDB();
"\nDB Contents:\n".title();
result += dbView;
return(result);
}
