public void Execute(LiteEngine db, StringScanner s, Display display)
{
var col = this.ReadCollection(db, s);
var query = s.Match("{") ? Query.All() : this.ReadQuery(s);
var code = DynamicCode.GetCode(s);
var docs = col.Find(query).ToArray();
try
{
db.BeginTrans();
foreach (var doc in docs)
{
code(doc["_id"].RawValue, doc, col, db);
}
db.Commit();
display.WriteBson(docs.Length);
}
catch (Exception ex)
{
db.Rollback();
throw ex;
}
}
public void Execute(LiteEngine db, StringScanner s, Display display)
{
if (db == null)
{
throw new LiteException("No database");
}
var col = this.ReadCollection(db, s);
var filename = s.Scan(@".*");
var json = File.ReadAllText(filename, Encoding.UTF8);
var docs = JsonEx.DeserializeArray <BsonDocument>(json);
var count = 0;
db.BeginTrans();
foreach (var doc in docs)
{
count++;
col.Insert(doc);
}
db.Commit();
display.WriteBson(count);
}
public void Execute(ref LiteEngine db, StringScanner s, Display display)
{
var col = this.ReadCollection(db, s);
var filename = s.Scan(@".*");
var json = File.ReadAllText(filename, Encoding.UTF8);
var docs = JsonEx.Deserialize(json);
var count = 0;
db.BeginTrans();
if (docs.IsArray)
{
foreach (var doc in docs.AsArray)
{
count++;
col.Insert(new BsonDocument(doc));
}
}
else
{
count = 1;
col.Insert(new BsonDocument(docs));
}
db.Commit();
display.WriteBson(count);
}
public void Create_100k_Rows_DB()
{
using (var db = new LiteEngine(dbpath))
{
var c = db.GetCollection <PerfItem>("perf");
//c.EnsureIndex("MyGuid", true);
var id = 0;
for (var j = 0; j < 3; j++)
{
var d = DateTime.Now;
db.BeginTrans();
for (var i = 0; i < 10000; i++)
{
id++;
c.Insert(id, new PerfItem {
Id = id, MyGuid = Guid.NewGuid(), Nome = "Jose Silva " + id
});
}
db.Commit();
Debug.Print("Commits " + j + " in " + DateTime.Now.Subtract(d).TotalMilliseconds);
}
}
}
public void Execute(ref LiteEngine db, StringScanner s, Display display)
{
if (db == null)
{
throw new ArgumentException("No database");
}
db.Commit();
}
public void Checkpoint_TransactionRecovery_Test()
{
using (var file = new TempFile())
{
using (var db = new LiteEngine(new FileDiskService(file.Filename), autocommit: false))
{
var log = new StringBuilder();
db.Log.Level = Logger.CACHE;
db.Log.Logging += (s) => log.AppendLine(s);
// initialize my "col" with 1000 docs without transaction
db.Insert("col", GetDocs(1, 1000));
// commit now for intialize new transaction
db.Commit();
// insert a lot of docs inside a single collection (will do checkpoint in disk)
db.Insert("col", GetDocs(1001, N));
// update all documents
db.Update("col", GetDocs(1, N));
// create new index
db.EnsureIndex("col", "type");
// checks if cache had a checkpoint
Assert.IsTrue(log.ToString().Contains("checkpoint"));
// datafile must be big (because checkpoint expand file)
Assert.IsTrue(file.Size > 30 * 1024 * 1024); // in MB\
// delete all docs > 1000
db.Delete("col", Query.GT("_id", 1000));
db.DropIndex("col", "type");
// let's rollback everything
db.Rollback();
// be sure cache are empty
Assert.AreEqual(0, db.CacheUsed);
// datafile must returns to original size (less than 1.5MB for 1000 docs)
Assert.IsTrue(file.Size < 1.5 * 1024 * 1024); // in MB
// test in my only doc exits
Assert.AreEqual(1000, db.Count("col", Query.All()));
Assert.AreEqual(1000, db.Count("col", null));
// test indexes (must have only _id index)
Assert.AreEqual(1, db.GetIndexes("col").Count());
}
}
}
public void Perf_Test()
{
var path = DB.Path(true, "test.db");
using (var db = new LiteEngine("journal=true;filename=" + path))
{
db.BeginTrans();
var col = db.GetCollection <Post>("posts");
col.Insert(Post.GetData(20000));
db.Commit();
}
}
public void Performance_Test()
{
// just a simple example to test performance speed
using (var file = new TempFile())
using (var db = new LiteEngine(file.Filename))
{
var ti = new Stopwatch();
var tx = new Stopwatch();
var tu = new Stopwatch();
var td = new Stopwatch();
ti.Start();
db.Insert("col", GetDocs(N1));
db.Commit();
ti.Stop();
tx.Start();
db.EnsureIndex("col", "name");
db.Commit();
tx.Stop();
tu.Start();
db.Update("col", GetDocs(N1));
db.Commit();
tu.Stop();
db.EnsureIndex("col", "name");
db.Commit();
td.Start();
db.Delete("col", Query.All());
db.Commit();
td.Stop();
Debug.WriteLine("Insert time: " + ti.ElapsedMilliseconds);
Debug.WriteLine("EnsureIndex time: " + tx.ElapsedMilliseconds);
Debug.WriteLine("Update time: " + tu.ElapsedMilliseconds);
Debug.WriteLine("Delete time: " + td.ElapsedMilliseconds);
}
}
public void Performance_Test()
{
// just a simple example to test performance speed
using (var file = new TempFile())
using (var db = new LiteEngine(file.Filename))
{
var ti = new Stopwatch();
var tx = new Stopwatch();
var tu = new Stopwatch();
var td = new Stopwatch();
ti.Start();
db.Insert("col", GetDocs(N1));
db.Commit();
ti.Stop();
tx.Start();
db.EnsureIndex("col", "name");
db.Commit();
tx.Stop();
tu.Start();
db.Update("col", GetDocs(N1));
db.Commit();
tu.Stop();
db.EnsureIndex("col", "name");
db.Commit();
td.Start();
db.Delete("col", Query.All());
db.Commit();
td.Stop();
Debug.Print("Insert time: " + ti.ElapsedMilliseconds);
Debug.Print("EnsureIndex time: " + tx.ElapsedMilliseconds);
Debug.Print("Update time: " + tu.ElapsedMilliseconds);
Debug.Print("Delete time: " + td.ElapsedMilliseconds);
}
}
public void Files_Store()
{
using (var db = new LiteEngine(dbpath))
{
var c = db.GetCollection("customer");
db.BeginTrans();
for (var i = 1; i <= 500; i++)
{
var d = new BsonDocument();
d["Name"] = "San Jose";
c.Insert(i, d);
}
for (var i = 1; i <= 500; i++)
{
c.Delete(i);
}
db.Commit();
Dump.Pages(db, "before");
var meta = new Dictionary <string, string>();
meta["my-data"] = "Google LiteDB";
db.Storage.Upload("my/foto1.jpg", new MemoryStream(new byte[5000]), meta);
Dump.Pages(db, "after file");
var f = db.Storage.FindByKey("my/foto1.jpg");
Assert.AreEqual(5000, f.Length);
Assert.AreEqual("Google LiteDB", f.Metadata["my-data"]);
var mem = new MemoryStream();
f.OpenRead(db).CopyTo(mem);
// file real size after read all bytes
Assert.AreEqual(5000, mem.Length);
// all bytes are 0
Assert.AreEqual(5000, mem.ToArray().Count(x => x == 0));
db.Storage.Delete("my/foto1.jpg");
Dump.Pages(db, "deleted file");
}
}
public void Page_PrevNext_Test()
{
using (var db = new LiteEngine(DB.Path()))
{
var k = 1;
db.BeginTrans();
this.PopulateCollection("my_collection_1", db, k);
//this.PopulateCollection("my_collection_2", db, k);
//this.PopulateCollection("my_collection_3", db, k);
//this.PopulateCollection("my_collection_4", db, k);
//this.PopulateCollection("my_collection_3", db, 5);
db.Commit();
this.Verify("my_collection_1", db, k);
//this.Verify("my_collection_2", db, k);
//this.Verify("my_collection_3", db, k);
//this.Verify("my_collection_4", db, k);
Dump.Pages(db);
db.GetCollection("my_collection_1").Delete(Query.All());
//db.GetCollection("my_collection_2").Delete(Query.All());
//db.GetCollection("my_collection_3").Delete(Query.All());
//db.GetCollection("my_collection_4").Delete(Query.All());
Dump.Pages(db, "After clear");
db.FileStorage.Upload("my/foto1.jpg", new MemoryStream(new byte[1024 * 50]));
}
using (var db = new LiteEngine(DB.Path(false)))
{
Dump.Pages(db, "After File");
}
}
public void Execute(LiteEngine engine, StringScanner s, Display display, InputCommand input, Env env)
{
engine.Commit();
}
public void Execute(LiteEngine db, StringScanner s, Display display)
{
db.Commit();
}
public void Checkpoint_TransactionRecovery_Test()
{
using (var file = new TempFile())
{
using (var db = new LiteEngine(new FileDiskService(file.Filename), autocommit: false ))
{
var log = new StringBuilder();
db.Log.Level = Logger.CACHE;
db.Log.Logging += (s) => log.AppendLine(s);
// initialize my "col" with 1000 docs without transaction
db.Insert("col", GetDocs(1, 1000));
// commit now for intialize new transaction
db.Commit();
// insert a lot of docs inside a single collection (will do checkpoint in disk)
db.Insert("col", GetDocs(1001, N));
// update all documents
db.Update("col", GetDocs(1, N));
// create new index
db.EnsureIndex("col", "type");
// checks if cache had a checkpoint
Assert.IsTrue(log.ToString().Contains("checkpoint"));
// datafile must be big (because checkpoint expand file)
Assert.IsTrue(file.Size > 30 * 1024 * 1024); // in MB\
// delete all docs > 1000
db.Delete("col", Query.GT("_id", 1000));
db.DropIndex("col", "type");
// let's rollback everything
db.Rollback();
// be sure cache are empty
Assert.AreEqual(0, db.CacheUsed);
// datafile must returns to original size (less than 1.5MB for 1000 docs)
Assert.IsTrue(file.Size < 1.5 * 1024 * 1024); // in MB
// test in my only doc exits
Assert.AreEqual(1000, db.Count("col", Query.All()));
Assert.AreEqual(1000, db.Count("col", null));
// test indexes (must have only _id index)
Assert.AreEqual(1, db.GetIndexes("col").Count());
}
}
}