private int writeCountDB1 = 0; // counter to run scheduler runs 3 times
//----< Constructor>-------------------
public Scheduler(DBEngine <Key, Value> dbEngine, int interval)
{
db = dbEngine;
timeInterval = interval;
schedular.Interval = timeInterval;
schedular.AutoReset = true;
schedular.Enabled = true;
schedular.Elapsed += (object source, ElapsedEventArgs e) =>
{
if (writeCountDB1 <= 2) // Run scheduler for 3 times
{
string xmlFile1 = "nosqdldb_primitive.xml";
string xmlFile2 = "nosqdldb.xml";
writeCountDB1++;
if (typeof(DBElement <Key, T>).ToString() == typeof(Value).ToString())
{
Console.Write("\n Scheduled save of NOSQL key/Value database to persistent storage file {0} at time {1} ", xmlFile1, e.SignalTime);
db.persist_db <Key, Value, T>(xmlFile1);
}
else
{
Console.Write("\n Scheduled save of NOSQL key/Value database to persistent storage file {0} at time {1} ", xmlFile2, e.SignalTime);
db.persist_db <Key, Value, Data, T>(xmlFile2);
}
}
else
{ //Disable scheduler after 3 saves
schedular.Enabled = false;
}
};
}
//----< trigger primitive storage persisting >-------------------------------------
private void trigger_primitive_storage <Key, Data>(DBEngine <Key, DBElement <Key, Data> > dbType)
{
string dir = "..\\..\\..\\..\\input_xml\\";
string xmlFile3 = "nosqldb_primitive.xml";
String maxWrites = "\n\n Save call triggered after exceeding maximum " + dbType.max_writes + " writes to DB";
maxWrites.title();
dbType.persist_db <Key, DBElement <Key, Data>, Data>(dir + xmlFile3);
}
//----< trigger collection persisting >-------------------------------------
private void trigger_collection_storage <Key, Data, T>(DBEngine <Key, DBElement <Key, Data> > dbType2)
{
string dir = "..\\..\\..\\..\\input_xml\\";
String maxWrites = "\n\n Save call triggered after exceeding maximum " + dbType2.max_writes + " writes to DB";
maxWrites.title();
string xmlFile2 = "nosqdldb.xml";
dbType2.persist_db <Key, DBElement <Key, Data>, List <T>, T>(dir + xmlFile2);
}
//----< Demonstrating req 5 - Demonstrating persisting, unpersisting and restoring db>-------------------
public void TestR5(DBEngine <int, DBElement <int, string> > dbType1, DBEngine <string, DBElement <string, List <string> > > dbType2)
{
string dir = "..\\..\\..\\..\\input_xml\\";
string xmlFile1 = "nosqdldb_primitive.xml";
"\n\nDemonstrating Requirement #5 Primitive DB".title();
dbType1.persist_db <int, DBElement <int, string>, string>(dir + xmlFile1);
WriteLine("\nSuccesfully persisted dbengine contents to xml file :" + xmlFile1);
string xmlFile2 = "nosqdldb.xml";
"\n\nDemonstrating Requirement #5 - Collection DB".title();
dbType2.persist_db <string, DBElement <string, List <string> >, List <string>, string>(dir + xmlFile2);
WriteLine("\nSuccesfully persisted dbengine contents to xml file : " + xmlFile2);
string xmlFile3 = "read_nosqldb_primitive.xml";
"\n\nDemonstrating Requirement #5 - Augumenting DB - Primitive DB".title();
WriteLine("\n\n Before Augumenting DB from xml file : " + xmlFile3);
dbType1.showDB();
dbType1.augument_db <int, DBElement <int, string>, string>(dir + xmlFile3);
WriteLine("\n\n After Augumenting DB from xml file : " + xmlFile3);
dbType1.showDB();
string xmlFile4 = "read_nosqdldb.xml";
"\n\nDemonstrating Requirement #5 - Augumenting DB - Collection DB".title();
WriteLine("\n\n Before Augumenting DB from xml file : " + xmlFile4);
dbType2.showEnumerableDB();
dbType2.augument_db <string, DBElement <string, List <string> >, List <string>, string>(dir + xmlFile4);
WriteLine("\n\n After Augumenting DB from xml file : " + xmlFile4);
dbType2.showEnumerableDB();
DBEngine <int, DBElement <int, string> > dbType1New = new DBEngine <int, DBElement <int, string> >();
DBEngine <string, DBElement <string, List <string> > > dbType2New = new DBEngine <string, DBElement <string, List <string> > >();
string xmlFile5 = "read_nosqldb_primitive.xml";
"\n\nDemonstrating Requirement #5 - Restoring DB - Primitive DB".title();
WriteLine("\n\n Before Restoring DB from xml file : " + xmlFile5);
dbType1New.showDB();
dbType1New.augument_db <int, DBElement <int, string>, string>(dir + xmlFile5);
WriteLine("\n\n After Restoring DB from xml file : " + xmlFile5);
dbType1New.showDB();
string xmlFile6 = "read_nosqdldb.xml";
"\n\nDemonstrating Requirement #5 - Restoring DB - Collection DB".title();
WriteLine("\n\n Before Restoring DB from xml file : " + xmlFile6);
dbType2New.showEnumerableDB();
dbType2New.augument_db <string, DBElement <string, List <string> >, List <string>, string>(dir + xmlFile6);
WriteLine("\n\n After Restoring DB from xml file : " + xmlFile6);
dbType2New.showEnumerableDB();
}
static void Main(string[] args)
{
"Demonstrating Persist Engine".title('=');
DBEngine <int, DBElement <int, string> > dbType1 = new DBEngine <int, DBElement <int, string> >();
DBEngine <string, DBElement <string, List <string> > > dbType2 = new DBEngine <string, DBElement <string, List <string> > >();
//Demonstrating primitive type
DBElement <int, string> elem1 = new DBElement <int, string>();
elem1.name = "Jurassic World";
elem1.descr = "Story on escape from giant creatures";
elem1.timeStamp = DateTime.Now;
elem1.payload = "A giant creature attacks the park and becomes a killing machine";
dbType1.insert(DBElementExtensions.generate_int_key(), elem1);
DBElement <int, string> elem2 = new DBElement <int, string>();
elem2.name = "Cast Away";
elem2.descr = "Story of surviving a crash landing on a deserted island.";
elem2.timeStamp = DateTime.Now;
elem2.children.AddRange(new List <int> {
4, 5
});
elem2.payload = "Directed by Robert Zemeckis and written by Willian Broyles Jr.";
dbType1.insert(DBElementExtensions.generate_int_key(), elem2);
dbType1.showDB();
//Demostrating IEnumberable Type
DBElement <string, List <string> > newerelem1 = new DBElement <string, List <string> >();
newerelem1.name = "Movie Name - The Good the Bad and the Ugly";
newerelem1.descr = "A bounty hunting scam joins two men in an uneasy alliance ";
newerelem1.payload = new List <string> {
"Clint Eastwood", " Eli Wallach", "Lee Van Cleef"
};
String key = "The Good, the Bad and the Ugly";
dbType2.insert(key, newerelem1);
DBElement <string, List <string> > newerelem2 = new DBElement <string, List <string> >();
newerelem2.name = "Movie Name - Django Unchained";
newerelem2.descr = "With the help of a German hunter, a freed slave sets to rescue";
newerelem2.children.AddRange(new[] { key, "Life Is Beautiful" });
newerelem2.payload = new List <string> {
"Jamie Foxx", "Christoph Waltz", "Leonardo DiCaprio"
};
newerelem2.payload.Add("Quentin Tarantino");
String key1 = "Django Unchained";
dbType2.insert(key1, newerelem2);
dbType2.showEnumerableDB();
string xmlFile1 = "nosqdldb_primitive.xml";
dbType1.persist_db <int, DBElement <int, string>, string>(xmlFile1);
WriteLine("\nSuccesfully persisted dbengine contents to xml file :" + xmlFile1);
string xmlFile2 = "nosqdldb.xml";
dbType2.persist_db <string, DBElement <string, List <string> >, List <string>, string>(xmlFile2);
WriteLine("\nSuccesfully persisted dbengine contents to xml file : " + xmlFile2);
string xmlFile3 = "read_nosqldb_primitive.xml";
WriteLine("\n\n Before Augumenting DB from xml file : " + xmlFile3);
dbType1.showDB();
dbType1.augument_db <int, DBElement <int, string>, string>(xmlFile3);
WriteLine("\n\n After Augumenting DB from xml file : " + xmlFile3);
dbType1.showDB();
string xmlFile4 = "read_nosqdldb.xml";
WriteLine("\n\n Before Augumenting DB from xml file : " + xmlFile4);
dbType2.showEnumerableDB();
dbType2.augument_db <string, DBElement <string, List <string> >, List <string>, string>(xmlFile4);
WriteLine("\n\n After Augumenting DB from xml file : " + xmlFile4);
dbType2.showEnumerableDB();
DBEngine <int, DBElement <int, string> > dbType1New = new DBEngine <int, DBElement <int, string> >();
DBEngine <string, DBElement <string, List <string> > > dbType2New = new DBEngine <string, DBElement <string, List <string> > >();
string xmlFile5 = "read_nosqldb_primitive.xml";
WriteLine("\n\n Before Restoring DB from xml file : " + xmlFile5);
dbType1New.showDB();
dbType1New.augument_db <int, DBElement <int, string>, string>(xmlFile5);
WriteLine("\n\n After Restoring DB from xml file : " + xmlFile5);
dbType1New.showDB();
string xmlFile6 = "read_nosqdldb.xml";
WriteLine("\n\n Before Restoring DB from xml file : " + xmlFile6);
dbType2New.showEnumerableDB();
dbType2New.augument_db <string, DBElement <string, List <string> >, List <string>, string>(xmlFile6);
WriteLine("\n\n After Restoring DB from xml file : " + xmlFile6);
dbType2New.showEnumerableDB();
}
