static void Main(string[] args)
{
Write("\n --- Test specific key query ---");
Write("\n ---Database contents");
DBElement <int, string> elem1 = new DBElement <int, string>();
elem1.descr = "payload desxription";
elem1.name = "element 1";
elem1.timeStamp = DateTime.Now;
elem1.payload = "a payload";
WriteLine();
DBElement <int, string> elem2 = new DBElement <int, string>("Darth Vader", "Evil Overlord");
elem2.descr = "star war 2";
elem2.name = "element 2";
elem2.timeStamp = new DateTime(2015, 9, 10, 12, 30, 1);
elem2.payload = "The Empire strikes back!";
WriteLine();
var elem3 = new DBElement <int, string>("Luke Skywalker", "Young HotShot");
elem3.name = "element 3";
elem3.descr = "star war 3";
elem3.timeStamp = new DateTime(2015, 10, 2, 8, 0, 0);
elem3.children = new List <int> {
1, 2, 3
};
elem3.payload = "X-Wing fighter in swamp - Oh oh!";
WriteLine();
int key = 0;
Func <int> keyGen = () => { ++key; return(key); }; // anonymous function to generate keys
DBEngine <int, DBElement <int, string> > db = new DBEngine <int, DBElement <int, string> >();
bool p1 = db.insert(keyGen(), elem1);
bool p2 = db.insert(keyGen(), elem2);
bool p3 = db.insert(keyGen(), elem3);
db.show <int, DBElement <int, string>, string>();
QueryEngine <int, string> QETest = new QueryEngine <int, string>(db);
WriteLine();
Write("\n --- Query element which key=2");
QueryEngine <int, string> query = new QueryEngine <int, string>(db);
DBElement <int, string> elem;
bool valQuery = query.KeyQuery(2, out elem);
if (valQuery)
{
Write("\n This element exist");
}
Write(elem.showElement <int, string>());
WriteLine();
Write("\n --- Test queries for children of a specified key ---");
Write("\n --- Query for children of element which key=3 ---");
List <int> children;
bool childQuery = query.queryChildren(3, out children);
if (childQuery)
{
Write("\n This element has child");
}
foreach (var child in children)
{
Write("\n Key of child: {0}", child.ToString());
}
WriteLine();
Write("\n --- Test all keys that contain a specified string in their metadata section---");
Write("\n --- query for \"star war\" in metadata, return keys ---");
Func <int, bool> stringTest = QETest.defineStringQuery("star war");
List <int> keyCollection;
bool stringQuery = QETest.processQuery(stringTest, out keyCollection);
foreach (var k in keyCollection)
{
Write("\n Key: {0}", k.ToString());
}
WriteLine();
WriteLine("\n --- Test query according to a specified time-date interval ---");
DateTime time1 = new DateTime(2015, 10, 1, 0, 0, 0);
DateTime time2 = new DateTime(2015, 10, 2, 11, 0, 0);
List <int> timeCollection;
Func <int, bool> timeTest = QETest.defineTimeQuery(time1, time2);
bool timeResult = QETest.processQuery(timeTest, out timeCollection);
foreach (var k in timeCollection)
{
WriteLine("key in specific time interval: {0}", k.ToString());
}
WriteLine();
WriteLine("--- When time is not provided ---");
DateTime time3 = new DateTime();
timeTest = QETest.defineTimeQuery(time1, time3);
bool timeQuery2 = QETest.processQuery(timeTest, out timeCollection);
foreach (var k in timeCollection)
{
WriteLine("key in specific time interval: {0}", k.ToString());
}
WriteLine();
}
static void Main(string[] args)
{
QueryEngine<int, DBElement<int, string>, string> qe = new QueryEngine<int, DBElement<int, string>, string>();
QueryEngine<string, DBElement<string, List<string>>, List<string>> qeLOS = new QueryEngine<string, DBElement<string, List<string>>, List<string>>();
DBEngine<int, DBElement<int, string>> db = new DBEngine<int, DBElement<int, string>>();
DBElement<int, string> elem = new DBElement<int, string>();
DBElement<int, string> Result = new DBElement<int, string>();
elem.name = "Test";
elem.descr = "Test descr";
elem.timeStamp = DateTime.Now;
elem.children.AddRange(new List<int> { 1, 2, 3 });
elem.payload = "Test Payload";
db.insert(0, elem);
DBElement<int, string> elem1 = new DBElement<int, string>();
elem1.name = "Test 1";
elem1.descr = "Test descr 1";
elem1.timeStamp = DateTime.Now;
elem1.children.AddRange(new List<int> { 4, 5, 6 });
elem1.payload = "Test Payload 1";
db.insert(1, elem1);
DBEngine<string, DBElement<string, List<string>>> dbLOS = new DBEngine<string, DBElement<string, List<string>>>();
DBElement<string, List<string>> elemLOS = new DBElement<string, List<string>>();
DBElement<string, List<string>> ResultLOS = new DBElement<string, List<string>>();
elemLOS.name = "Test";
elemLOS.descr = "Test descr";
elemLOS.timeStamp = DateTime.Now;
elemLOS.children = new List<string> { "One", "Two", "Three" };
elemLOS.payload = new List<string> { "Test Payload", "Payload" };
dbLOS.insert("One", elemLOS);
DBElement<string, List<string>> elemLOS1 = new DBElement<string, List<string>>();
elemLOS1.name = "Test 2";
elemLOS1.descr = "Test descr 2";
elemLOS1.timeStamp = DateTime.Now;
elemLOS1.children = new List<string> { "Four", "Five", "Six" };
elemLOS1.payload = new List<string> { "Test Payload 2", "Payload 2" };
dbLOS.insert("Two", elemLOS1);
if (qe.getValue(0, db, out Result))
WriteLine("Value of key 0:\n{0}\n Payload: {1}", Result.showMetaData(), Result.payload.ToString());
else
WriteLine("Key not found");
WriteLine();
if (qeLOS.getValue("One", dbLOS, out ResultLOS))
WriteLine("Value of key:\n{0}\n Payload: {1}", ResultLOS.showMetaData(), qeLOS.ToString(ResultLOS.payload));
else
WriteLine("Key not found");
WriteLine();
if (qe.getChildren(0, db, out children))
WriteLine("Children of specified key: {0}", qe.ToString(children));
else
WriteLine("Key not found");
if (qeLOS.getChildren("One", dbLOS, out childrenLOS))
WriteLine("Children of specified key: {0}", qeLOS.ToString(childrenLOS));
else
WriteLine("Key not found");
WriteLine();
if (qe.searchPattern(0, db, out Keys))
Console.WriteLine("Set of Keys: {0}", qe.ToString(Keys));
else
Console.WriteLine("No Keys found!");
if (qeLOS.searchPattern("O", dbLOS, out KeysLOS))
Console.WriteLine("Set of Keys: {0}", qeLOS.ToString(KeysLOS));
else
Console.WriteLine("No Keys found!");
WriteLine();
if (qe.searchString("descr", db, out Keys))
Console.WriteLine("Set of Keys: {0}", qe.ToString(Keys));
else
Console.WriteLine("\nNo Keys found!");
if (qeLOS.searchString("Test", dbLOS, out KeysLOS))
Console.WriteLine("Set of Keys: {0}", qeLOS.ToString(KeysLOS));
else
Console.WriteLine("No Keys found!");
WriteLine();
if (qe.searchInterval("10/7/1999 12:00:00 AM", "", db, out Keys))
Console.WriteLine("Set of Keys: {0}", qe.ToString(Keys));
else
Console.WriteLine("\nNo Keys found!");
if (qeLOS.searchInterval("10/7/1999 12:00:00 AM", "", dbLOS, out KeysLOS))
Console.WriteLine("Set of Keys: {0}", qeLOS.ToString(KeysLOS));
else
Console.WriteLine("No Keys found!");
WriteLine();
}