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 TestR2()
{
"Demonstrating Requirement #2".title('=');
"Database with string as payload".title();
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(1, elem);
db.showDB();
WriteLine();
"database with list of strings as payload".title();
DBElement<string, List<string>> element = new DBElement<string, List<string>>();
element.name = "element2";
element.descr = "test element for list of strings as value";
element.timeStamp = DateTime.Now;
element.children.AddRange(new List<string> { "one","two"});
element.payload = new List<string> { "element's payload", "2nd payload" };
element.showEnumerableElement();
enum_db.insert("enum_one", element);
enum_db.showEnumerableDB();
WriteLine();
}
/* Defining a query using lambda function to search specific key
*/
public bool key_value_search(DBEngine<string, DBElement<string, List<string>>> db, out IQuery<string, DBElement<string, List<string>>> i_query, QueryEngine<string, DBElement<string, List<string>>> qe, string key_to_search = "12345")
{
"Query for value with specified key (key = element2):".title();
WriteLine();
Func<string, string, bool> keyValueSearch = (string key, string search) => //lambda function
{
if (!db.Keys().Contains(key))
return false;
else
{
if (key == (search))
{
DBElement<string, List<string>> ele = new DBElement<string, List<string>>();
db.getValue(key, out ele);
return true;
}
else { return false; }
}
};
// pass query to query engine and call simpleQuery to make query on DBEngine
if (qe.simpleQuery(keyValueSearch, key_to_search.ToString(), out i_query))
{
WriteLine();
foreach (var key in i_query.Keys())
{
DBElement<string, List<string>> temp = new DBElement<string, List<string>>();
i_query.getValue(key, out temp);
WriteLine("key : {0}", key);
temp.showEnumerableElement();
WriteLine();
}
return true;
}
else
{
return false;
}
}
void TestR3()
{
WriteLine();
"Demonstrating Requirement #3".title('=');
WriteLine();
"Adding Key-Value pair to database".title();
DBElement<int, string> element = new DBElement<int, string>();
element.addElementData("element3", "test element for adding key-value pair to databse with value as string", DateTime.Now, new List<int> { 1, 2 }, "test elemet3's payload");
"element to be added to database".title();
element.showElement();
db.insert(2, element);
db.showDB();
WriteLine();
"Adding Key-Value pair to enumerable database".title();
DBElement<string, List<string>> listelement = new DBElement<string, List<string>>();
listelement.addElementData("element4", "test element for adding key-value pair to databse with value as list of string", DateTime.Now, new List<string> { "1", "two" }, new List<string> { "test elemet4's payload" });
"element to be added to database".title();
listelement.showEnumerableElement();
enum_db.insert("enum_two", listelement);
enum_db.showEnumerableDB();
WriteLine();
"Deleting Key-Value pair from database".title();
"Element with key=1 will be deleted from database".title();
"Element with key=1:".title();
DBElement<int, string> remove_element = new DBElement<int, string>();
db.getValue(1, out remove_element);
remove_element.showElement();
db.remove(1);
WriteLine();
"Modified Database: ".title();
db.showDB();
WriteLine();
"Deleting Key-Value pair from enumerable database".title();
"Element with key=enum_one will be deleted from database".title();
"Element with key=enum_one:".title();
DBElement<string, List<string>> remove_enum_element = new DBElement<string, List<string>>();
enum_db.getValue("enum_one", out remove_enum_element);
remove_enum_element.showEnumerableElement();
enum_db.remove("enum_one");
WriteLine();
"Modified enumerable Database: ".title();
enum_db.showEnumerableDB();
WriteLine();
}
public void TestR7()
{
"Demonstrating Requirement #7".title('=');
WriteLine();
"Adding elements to db".title();
WriteLine();
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 = new DateTime(2015,10,(2+i));
elem.children.AddRange(new List<string> { "one", "two", "three" });
elem.payload = new List<string>{ "elem's payload1","payload2","payload 3"};
elem.showEnumerableElement();
WriteLine();
enum_db.insert((12345+i).ToString(), elem);
}
"current DB status:".title();
enum_db.showEnumerableDB();
IQuery<string, DBElement<string, List<string>>> i_query = new DBEngine<string, DBElement<string, List<string>>>();
QueryEngine<string, DBElement<string, List<string>>> qe = new QueryEngine<string, DBElement<string, List<string>>>(enum_db);
QueryPredicate qp = new QueryPredicate();
qp.key_value_search(enum_db, out i_query, qe);
WriteLine();
qp.key_children_search(enum_db, out i_query, qe);
WriteLine();
qp.pattern_matching(enum_db, out i_query, qe, "12345");
WriteLine();
qp.pattern_matching(enum_db, out i_query, qe);
WriteLine();
qp.metadata_string(enum_db, out i_query, qe);
WriteLine();
DateTime start = new DateTime(2015, 10, 4);
DateTime end = new DateTime(2015, 10, 5);
qp.date_time_specific(enum_db, out i_query, qe, start, end);
WriteLine();
qp.default_date_time_specific(enum_db, out i_query, qe, start);
WriteLine();
}
void TestR4(string edit_action)
{
DBElement<string, List<string>> element = new DBElement<string, List<string>>();
element.addElementData("element1", "test element for editing key-value pair to databse with value as string", DateTime.Now, new List<string> { "enum_one", "enum_two" }, new List<string> { "test element1's payload" });
enum_db.insert("enum_one", element);
"Demonstrating Requirement #4".title();
DBElement<string, List<string>> edit_element = new DBElement<string, List<string>>();
enum_db.getValue("enum_one", out edit_element);
"Element to be edited".title();
edit_element.showEnumerableElement();
WriteLine();
"Database before editing".title();
enum_db.showEnumerableDB();
WriteLine();
switch (edit_action)
{
case "edit metadata":
edit_element.edit_metadata(edit_action);
goto default;
case "add children":
edit_element.add_children(edit_action);
goto default;
case "remove children":
edit_element.remove_children(edit_action);
goto default;
case "edit payload":
edit_element.edit_payload();
goto default;
default:
"element after editing".title();
edit_element.showEnumerableElement();
"Databaser after editing".title();
enum_db.showEnumerableDB();
WriteLine();
break;
}
}
static void Main(string[] args)
{
"Testing DBEngine Package".title('=');;
WriteLine();
"Test db of scalar elements".title();
WriteLine();
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();
/* ElementFormatter is not ready for prime time yet */
//Write(ElementFormatter.formatElement(elem1.showElement<int, string>(), false));
}
Write("\n --- Test DBEngine<int,DBElement<int,string>> ---");
WriteLine();
int key = 0;
Func <int> keyGen = () => { ++key; return(key); };
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();
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"
};
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");
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");
}
public static void Main()
{
"Testing QueryEngine Package".title('=');
Console.WriteLine();
QueryEngine queryv = new QueryEngine();
DBEngine <int, DBElement <int, string> > newdbq = new DBEngine <int, DBElement <int, string> >();
DBEngine <string, DBElement <string, List <string> > > newdbqs = new DBEngine <string, DBElement <string, List <string> > >();
DBElement <int, string> newqelem1 = new DBElement <int, string>();
DBElement <int, string> newqelem2 = new DBElement <int, string>();
DBElement <int, string> newqelem3 = new DBElement <int, string>();
newqelem1.name = "query elemnt 1";
newqelem1.descr = "testing qurey get value for 1";
newqelem1.payload = "new query element payload 1";
newqelem1.children.AddRange(new List <int> {
1, 22, 333
});
newqelem2.name = "query elemnt 2";
newqelem2.descr = "testing query get value for 2";
newqelem2.payload = "new query element payload 2";
newqelem2.children.AddRange(new List <int> {
010, 020, 030
});
newqelem3.name = "query elemnt 3";
newqelem3.descr = "testing quey get value for 3";
newqelem3.payload = "new query element payload 3";
newqelem3.children.AddRange(new List <int> {
777, 222, 333
});
newdbq.insert(1, newqelem1);
newdbq.insert(2, newqelem2);
newdbq.insert(3, newqelem3);
newdbq.showDB();
DBElement <int, string> displayres = new DBElement <int, string>();
Console.WriteLine("\n \n getting value for key 2");
displayres = queryv.queryvalue <int, DBElement <int, string>, string>(newdbq, 2);
if (displayres != null)
{
displayres.showElement();
}
Console.WriteLine("\n \n getting children for key 3");
List <int> childlist = new List <int>();
childlist = queryv.querychildren <int, DBElement <int, string>, string>(newdbq, 3);
if (childlist != null)
{
foreach (int i in childlist)
{
Console.WriteLine(i);
}
}
DBElement <string, List <string> > newelem1q = new DBElement <string, List <string> >(" element 1", "1 is first");
DBElement <string, List <string> > newelem2q = new DBElement <string, List <string> >(" element 2", "2 is second");
DBElement <string, List <string> > newelem3q = new DBElement <string, List <string> >(" element 3", " 3 is third");
newelem1q.children.AddRange(new List <string> {
" one", "one", "one"
});
newelem1q.payload = new List <string> {
"h", "e", "l", "l", "o"
};
newelem2q.children.AddRange(new List <string> {
" two", "two", "two"
});
newelem2q.payload = new List <string> {
"h", "d", "w", "f", "b"
};
newelem3q.children.AddRange(new List <string> {
" three", "three", "three"
});
newelem3q.payload = new List <string> {
"a", "e", "i", "o", "u"
};
newdbqs.insert("one", newelem1q);
newdbqs.insert("two", newelem2q);
newdbqs.insert("three", newelem3q);
newdbqs.showEnumerableDB();
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>(newdbqs, "two");
if (valuestring != null)
{
valuestring.showEnumerableElement();
}
DBElement <string, List <string> > valuestrings = new DBElement <string, List <string> >();
Console.WriteLine("\n \n getting children for key five");
List <string> childlists = new List <string>();
childlists = queryv.querychildren <string, DBElement <string, List <string> >, string>(newdbqs, "five");
if (childlists != null)
{
foreach (string cstring in childlists)
{
Console.WriteLine(cstring);
}
}
}
/* Defining a query using lambda function to search specific elements belonging in specific
* time-interval with end of time interval equal to present
*/
public void date_time_specific(DBEngine<string, DBElement<string, List<string>>> db, out IQuery<string, DBElement<string, List<string>>> i_query, QueryEngine<string, DBElement<string, List<string>>> qe, DateTime start, DateTime end = new DateTime())
{
"Query for keys with specified date time interval: start=10/4/2015 end=10/5/2015".title();
WriteLine();
Func<string, DateTime, DateTime, bool> TimeDateQuery = (string key, DateTime query_start, DateTime query_end) => //lambda function
{
if (!db.Keys().Contains(key))
return false;
else
{
DBElement<string, List<string>> ele = new DBElement<string, List<string>>();
db.getValue(key, out ele);
int start_result = DateTime.Compare(query_start, ele.timeStamp);
int end_result = DateTime.Compare(query_end, ele.timeStamp);
if ((start_result <= 0) && (end_result >= 0))
{
return true;
}
else return false;
}
};
// pass query to query engine and call simpleQuery to make query on DBEngine
qe.simpleQueryDate(TimeDateQuery, out i_query, start, end);
WriteLine();
foreach (var key in i_query.Keys())
{
DBElement<string, List<string>> temp = new DBElement<string, List<string>>();
i_query.getValue(key, out temp);
WriteLine("key : {0}", key);
temp.showEnumerableElement();
WriteLine();
}
}
/* Defining a query using lambda function to search specific string in metadata
*/
public bool metadata_string(DBEngine<string, DBElement<string, List<string>>> db, out IQuery<string, DBElement<string, List<string>>> i_query, QueryEngine<string, DBElement<string, List<string>>> qe, string metadata_str = "ele")
{
"Query for specified string in metadata: String = 'ele' ".title();
WriteLine();
Func<string, string, bool> stringMetadata = (string key, string search) => //lambda function
{
if (!db.Keys().Contains(key))
return false;
else
{
DBElement<string, List<string>> ele = new DBElement<string, List<string>>();
db.getValue(key, out ele);
if (ele.name.Contains(search) || ele.descr.Contains(search))
return true;
else return false;
}
};
// pass query to query engine and call simpleQuery to make query on DBEngine
if (qe.simpleQuery(stringMetadata, metadata_str, out i_query))
{
WriteLine();
foreach (var key in i_query.Keys())
{
DBElement<string, List<string>> temp = new DBElement<string, List<string>>();
i_query.getValue(key, out temp);
WriteLine("key : {0}", key);
temp.showEnumerableElement();
WriteLine();
}
return true;
} else
{
return false;
}
}
/* Defining a query using lambda function to search specific key matching default pattern
*/
public void default_pattern_matching(DBEngine<string, DBElement<string, List<string>>> db, out IQuery<string, DBElement<string, List<string>>> i_query, QueryEngine<string, DBElement<string, List<string>>> qe)
{
string pattern = "";
"Query for keys matching with specified pattern (pattern = none -> default case):".title();
WriteLine();
Func<string, string, bool> keysMatchingPattern = (string key, string search) => //lambda function
{
if (!db.Keys().Contains(key))
return false;
else
{
if (key.ToString().Contains(search))
{
DBElement<string, List<string>> ele = new DBElement<string, List<string>>();
db.getValue(key, out ele);
return true;
}
else return false;
}
};
// pass query to query engine and call simpleQuery to make query on DBEngine
qe.simpleQuery(keysMatchingPattern, pattern, out i_query);
WriteLine();
foreach (var key in i_query.Keys())
{
DBElement<string, List<string>> temp = new DBElement<string, List<string>>();
i_query.getValue(key, out temp);
WriteLine("key : {0}", key);
temp.showEnumerableElement();
WriteLine();
}
}
private void display_children(IQuery<string, DBElement<string, List<string>>> i_query, DBEngine<string, DBElement<string, List<string>>> db)
{
foreach (var key in i_query.Keys())
{
DBElement<string, List<string>> temp = new DBElement<string, List<string>>();
i_query.getValue(key, out temp);
WriteLine("children of element with key {0} :", key);
WriteLine();
if (temp.children != null)
{
int i = 0;
foreach (string child in temp.children)
{
WriteLine("Children {0}", ++i);
DBElement<string, List<string>> temp_child = new DBElement<string, List<string>>();
if (db.Keys().Contains(child))
{
db.getValue(child, out temp_child);
WriteLine("key : {0}", child);
temp_child.showEnumerableElement();
WriteLine();
}
else
{
WriteLine("no value with key {0} is present in database", child);
WriteLine();
}
}
}
}
}
void TestR12()
{
try
{
"\nThe database is shown below:".title();
WriteLine("\n Key: Apple");
DBElement<string, List<string>> elem1 = new DBElement<string, List<string>>();
elem1.name = "Apple";
elem1.descr = "Type of fruit";
elem1.timeStamp = DateTime.Now;
elem1.children.AddRange(new List<string> { "three" });
elem1.payload = new List<string> { "Seven" };
elem1.category = new List<string> { "fruit", "drink" };
dbCategory.insert("Apple", elem1);
elem1.showEnumerableElement();
displayCategory(elem1.category);
WriteLine("\n Key: Banana");
DBElement<string, List<string>> elem2 = new DBElement<string, List<string>>();
elem2.name = "Banana";
elem2.descr = "Type of fruit";
elem2.timeStamp = DateTime.Now;
elem2.children.AddRange(new List<string> { "two" });
elem2.payload = new List<string> { "Five", "Six" };
elem2.category = new List<string> { "fruit" };
dbCategory.insert("Banana", elem2);
elem2.showEnumerableElement();
displayCategory(elem2.category);
WriteLine("\n Key: Blackberry");
DBElement<string, List<string>> elem3 = new DBElement<string, List<string>>();
elem3.name = "Blackberry";
elem3.descr = "Type of fruit or phone";
elem3.timeStamp = DateTime.Now;
elem3.children.AddRange(new List<string> { "one" });
elem3.payload = new List<string> { "Eight" };
elem3.category = new List<string> { "fruit", "phone" };
dbCategory.insert("Blackberry", elem3);
elem3.showEnumerableElement();
displayCategory(elem3.category);
dictCategory = new Dictionary<string, List<string>>();
dictCategory.Add("fruit", new List<string> { "Apple", "Banana" });
List<string> values = new List<string>();
dictCategory.TryGetValue("fruit", out values);
dynamic result = qEngine.getKeyForCategory(dbCategory, values);
"\nMatched keys for category 'fruit'".title();
displayStringKeys(result);
}
catch (Exception e) { WriteLine("\n" + e.Message + "\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)
{
//<------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();
}
static void Main(string[] args)
{
DBEngine<string, DBElement<string, List<string>>> db = new DBEngine<string, DBElement<string, List<string>>>();
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 = new DateTime(2015, 10, (2 + i));
elem.children.AddRange(new List<string> { "element1", "element2", "element3" });
elem.payload = new List<string> { "elem's payload1", "elem's payload2" };
elem.showEnumerableElement();
WriteLine();
db.insert("element"+(12345 + i).ToString(), elem);
}
for (int i = 0; i < 3; i++)
{
DBElement <string, List<string>> elem = new DBElement<string, List<string>>();
elem.name = "db data";
elem.descr = "db data description";
elem.timeStamp = DateTime.Now;
elem.children.AddRange(new List<string> { "element12345", "element12346", "element12347" });
elem.payload = new List<string> { "elem's payload1", "elem's payload2" };
elem.showEnumerableElement();
WriteLine();
db.insert("element"+(i+1).ToString(), elem);
}
IQuery<string, DBElement<string, List<string>>> i_query = new DBEngine<string, DBElement<string, List<string>>>();
QueryEngine<string, DBElement<string, List<string>>> qe = new QueryEngine<string, DBElement<string, List<string>>>(db);
//<---- creating a query predicate object and calling each query on given test database --->
QueryPredicate qp = new QueryPredicate();
qp.key_value_search(db, i_query, qe);
WriteLine();
qp.key_children_search(db, i_query, qe);
WriteLine();
qp.pattern_matching(db, i_query, qe);
WriteLine();
qp.default_pattern_matching(db, i_query, qe);
WriteLine();
qp.metadata_string(db, i_query, qe);
WriteLine();
qp.date_time_specific(db, i_query, qe);
WriteLine();
qp.default_date_time_specific(db, i_query, qe);
WriteLine();
}
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");
}
private static void Test2(out DBElement<string, string> newelem1, out DBElement<string, string> newerelem1, out DBElement<string, string> newerelem2)
{
newelem1 = new DBElement<string, string>();
newelem1.name = "newelem1";
newelem1.descr = "test new type";
newelem1.payload = "one";
//Load the second element
newerelem1 = new DBElement<string, string>();
newerelem1.name = "newerelem1";
newerelem1.descr = "better formatting";
newerelem1.payload = "alpha";
//Load the third element
newerelem2 = new DBElement<string, string>();
newerelem2.name = "newerelem2";
newerelem2.descr = "better formatting";
newerelem2.children.AddRange(new List<string> { "first", "second" });
newerelem2.payload = "a";
if (verbose)
{
Write("\n --- Test DBElement<string,List<string>> ---");
WriteLine();
newelem1.showEnumerableElement(); //Display the element
WriteLine();
newerelem1.showEnumerableElement(); //Display the element
WriteLine();
newerelem2.showEnumerableElement();
WriteLine();
}
}