void TestR2()
{
"Demonstrating Requirement #2".title();
//creating new element of type int and string
DBElement <int, string> element = new DBElement <int, string>();
element.name = "first element of db";
element.descr = "int and string type";
element.timeStamp = DateTime.Now;
element.children.AddRange(new List <int> {
0, 2, 4, 8
});
element.payload = "first element's payload";
element.showElement();
db.insert(1, element);
db.showDB();
WriteLine();
//creating new element of type string and list of strings
DBElement <string, List <string> > element2 = new DBElement <string, List <string> >();
element2.name = "second element of db";
element2.descr = "strings and strings of string types";
element2.timeStamp = DateTime.Now;
element2.children.AddRange(new List <string> {
"SMA", "OOD", "Project2"
});
element2.payload = new List <string> {
"second", "SMA", "project"
};
element2.showEnumerableElement();
db2.insert("2", element2);
db2.showEnumerableDB();
WriteLine();
}
public void persistdb <Key, Value, Data>(DBEngine <Key, Value> db)
{
XDocument xml = new XDocument();
xml.Declaration = new XDeclaration("1.0", "utf-8", "yes");
XComment comment = new XComment("NoSQL Database"); //title for XML
xml.Add(comment);
XElement NoSQLelem = new XElement("NoSQLDB_ELEMENTS");
XElement type = new XElement("numbers", typeof(Key));
XElement payload = new XElement("name", typeof(Data));
xml.Add(NoSQLelem);
NoSQLelem.Add(type);
NoSQLelem.Add(payload);
foreach (Key k1 in db.Keys())
{
XElement tags = new XElement("open_close");
XElement key = new XElement("new_Key", k1); //tag for new keys generated
tags.Add(key);
Value value1;
db.getValue(k1, out value1);
DBElement <Key, Data> element = value1 as DBElement <Key, Data>;
WriteLine(element.showElement());
XElement dbelement = persistdbelement <Key, Data>(element);
tags.Add(dbelement);
NoSQLelem.Add(tags);
xml.Save("XML_FILE_PROJECT4.xml"); //XML file name
}
}
//----< write simple db elements out to Console >------------------
public static void show <Key, Value, Data>(this DBEngine <Key, Value> db)
{
foreach (Key key in db.Keys())
{
Value value;
db.getValue(key, out value);
DBElement <Key, Data> elem = value as DBElement <Key, Data>;
Write("\n\n -- key = {0} --", key);
Write(elem.showElement());
}
}
// main method to test DBExtensions package
static void Main(string[] args)
{
"Testing DBExtensions Package".title('=');
WriteLine();
// creation of new element
Write("\n --- Test DBElement<int,string> ---");
DBElement <int, string> elem1 = new DBElement <int, string>();
elem1.payload = "a payload";
Write(elem1.showElement <int, string>());
// creation of new database
DBEngine <int, DBElement <int, string> > dbs = new DBEngine <int, DBElement <int, string> >();
dbs.insert(1, elem1);
dbs.show <int, DBElement <int, string>, string>();
WriteLine();
Write("\n --- Test DBElement<string,List<string>> ---");
// creation of new element
DBElement <string, List <string> > newelem1 = new DBElement <string, List <string> >();
newelem1.name = "newelem1";
newelem1.descr = "test new type";
newelem1.children = new List <string> {
"Key1", "Key2"
};
newelem1.payload = new List <string> {
"one", "two", "three"
};
Write(newelem1.showElement <string, List <string>, string>());
DBEngine <string, DBElement <string, List <string> > > dbe = new DBEngine <string, DBElement <string, List <string> > >();
dbe.insert("key1", newelem1);
dbe.show <string, DBElement <string, List <string> >, List <string>, string>();
Write("\n\n");
}
void TestR7()
{
//Demonstrating queries
"Demonstrating Requirement #7".title();
WriteLine();
QueryEngine queryv = new QueryEngine();
DBElement <int, string> displayresc = new DBElement <int, string>();
DBElement <int, string> displayres = new DBElement <int, string>();
//demonstrating query 1
Console.WriteLine("\n \n getting value for key 1");
displayres = queryv.queryvalue <int, DBElement <int, string>, string>(db, 1);
if (displayres != null)
{
displayres.showElement();
}
DBElement <string, List <string> > valuestring = new DBElement <string, List <string> >();
Console.WriteLine("\n \n getting value for key 2");
valuestring = queryv.queryvalue <string, DBElement <string, List <string> >, string>(db2, "2");
if (valuestring != null)
{
valuestring.showEnumerableElement();
}
// demonstrating query 2
Console.WriteLine("\n \n getting children for key 1");
List <int> tchildlist = new List <int>();
tchildlist = queryv.querychildren <int, DBElement <int, string>, string>(db, 1);
if (tchildlist != null)
{
foreach (int i in tchildlist)
{
Console.WriteLine(i);
}
}
}
static void Main(string[] args)
{
"Testing DBEngine Package".title('=');;
WriteLine();
"Test db of scalar elements".title();
WriteLine();
//creation of new elements
DBElement <int, string> elem1 = new DBElement <int, string>();
elem1.payload = "a payload";
DBElement <int, string> elem2 = new DBElement <int, string>("Darth Vader", "Evil Overlord");
elem2.payload = "The Empire strikes back!";
var elem3 = new DBElement <int, string>("Luke Skywalker", "Young HotShot");
elem3.payload = "X-Wing fighter in swamp - Oh oh!";
if (verbose)
{
Write("\n --- Test DBElement<int,string> ---");
WriteLine();
elem1.showElement();
WriteLine();
elem2.showElement();
WriteLine();
elem3.showElement();
WriteLine();
}
Write("\n --- Test DBEngine<int,DBElement<int,string>> ---");
WriteLine();
int key = 0;
Func <int> keyGen = () => { ++key; return(key); }; // function to generate keys
// new database created
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);
if (p1 && p2 && p3)
{
Write("\n all inserts succeeded");
}
else
{
Write("\n at least one insert failed");
}
db.showDB();
WriteLine();
"Test db of enumerable elements".title();
WriteLine();
//new element created
DBElement <string, List <string> > newelem1 = new DBElement <string, List <string> >();
newelem1.name = "newelem1";
newelem1.descr = "test new type";
newelem1.payload = new List <string> {
"one", "two", "three"
};
//new element created
DBElement <string, List <string> > newerelem1 = new DBElement <string, List <string> >();
newerelem1.name = "newerelem1";
newerelem1.descr = "better formatting";
newerelem1.payload = new List <string> {
"alpha", "beta", "gamma"
};
newerelem1.payload.Add("delta");
newerelem1.payload.Add("epsilon");
//new element created
DBElement <string, List <string> > newerelem2 = new DBElement <string, List <string> >();
newerelem2.name = "newerelem2";
newerelem2.descr = "better formatting";
newerelem2.children.AddRange(new List <string> {
"first", "second"
});
newerelem2.payload = new List <string> {
"a", "b", "c"
};
newerelem2.payload.Add("d");
newerelem2.payload.Add("e");
if (verbose)
{
Write("\n --- Test DBElement<string,List<string>> ---");
WriteLine();
newelem1.showEnumerableElement();
WriteLine();
newerelem1.showEnumerableElement();
WriteLine();
newerelem2.showEnumerableElement();
WriteLine();
}
Write("\n --- Test DBEngine<string,DBElement<string,List<string>>> ---");
int seed = 0;
string skey = seed.ToString();
Func <string> skeyGen = () =>
{
++seed;
skey = "string" + seed.ToString();
skey = skey.GetHashCode().ToString();
return(skey);
};
DBEngine <string, DBElement <string, List <string> > > newdb =
new DBEngine <string, DBElement <string, List <string> > >();
newdb.insert(skeyGen(), newelem1);
newdb.insert(skeyGen(), newerelem1);
newdb.insert(skeyGen(), newerelem2);
newdb.showEnumerableDB();
Write("\n\n");
}
//calling function to show elements of type strings and list of strings
public static void showEnumerableElement(this DBElement <string, List <string> > enumElement)
{
Console.Write(enumElement.showElement <string, List <string>, string>());
}
{ // calling function to show elements of type int and strings
public static void showElement(this DBElement <int, string> element)
{
Console.Write(element.showElement <int, string>());
}
