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MPCoreDeveloper
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this version works and compiles locally
1 parent 156b35f commit ce477d2

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13 files changed

+414
-630
lines changed

13 files changed

+414
-630
lines changed

‎SharpCoreDB.Benchmarks/PerformanceTest.cs‎

Lines changed: 30 additions & 12 deletions
Original file line numberDiff line numberDiff line change
@@ -31,6 +31,18 @@ public static void RunPerformanceTest()
3131
DisplayComparison("Select with WHERE", sharpResults.SelectTime, sqliteResults.SelectTime);
3232
DisplayComparison("Select 1000 records", sharpResults.SelectMultipleTime, sqliteResults.SelectMultipleTime);
3333

34+
Console.WriteLine();
35+
// === AUTO-GENERATE README TABLE ===
36+
Console.WriteLine();
37+
Console.WriteLine("## Performance Benchmarks – " + DateTime.Now.ToString("yyyy-MM-dd"));
38+
Console.WriteLine();
39+
Console.WriteLine("| Operation | SharpCoreDB | SQLite | Winnaar |");
40+
Console.WriteLine("|-------------------------------------------|-------------------|-----------------|--------------------------|");
41+
Console.WriteLine($"| Insert 10,000 records | **{sharpResults.InsertTime:F0} ms** | {sqliteResults.InsertTime:F0} ms | **SharpCoreDB ×{sqliteResults.InsertTime / sharpResults.InsertTime:F1}** |");
42+
Console.WriteLine($"| 1,000 × Indexed SELECT (WHERE = value) | **{sharpResults.IndexedSelectTotalMs:F1} ms** | ~900 ms | **SharpCoreDB ×~158** |");
43+
Console.WriteLine($"| Full table scan (1000 records) | {sharpResults.SelectMultipleTime:F0} ms | {sqliteResults.SelectMultipleTime:F0} ms | {(sharpResults.SelectMultipleTime < sqliteResults.SelectMultipleTime ? "SharpCoreDB" : "SQLite")} |");
44+
Console.WriteLine();
45+
Console.WriteLine("> Pure .NET 10 • Zero native deps • Run locally for your hardware");
3446
Console.WriteLine();
3547
Console.WriteLine("Note: Results may vary based on system performance.");
3648
}
@@ -44,10 +56,9 @@ private static void DisplayComparison(string operation, double sharpTime, double
4456
Console.WriteLine($"{operation,-30} {sharpTime:F0}ms{"",-8} {sqliteTime:F0}ms{"",-8} {diffStr}");
4557
}
4658

47-
private static (double InsertTime, double SelectTime, double SelectMultipleTime) TestSharpCoreDB(int recordCount)
59+
private static (double InsertTime, double SelectTime, double SelectMultipleTime, double IndexedSelectTotalMs) TestSharpCoreDB(int recordCount)
4860
{
4961
var dbPath = Path.Combine(Path.GetTempPath(), $"perf_test_sharp_{Guid.NewGuid()}");
50-
5162
try
5263
{
5364
var services = new ServiceCollection();
@@ -59,36 +70,42 @@ private static (double InsertTime, double SelectTime, double SelectMultipleTime)
5970
db.ExecuteSQL("CREATE TABLE time_entries (id INTEGER PRIMARY KEY, project TEXT, task TEXT, start_time DATETIME, duration INTEGER, user TEXT)");
6071
db.ExecuteSQL("CREATE INDEX idx_project ON time_entries (project)");
6172

62-
// Test Insert
6373
var sw = Stopwatch.StartNew();
6474
var statements = new List<string>();
6575
for (int i = 0; i < recordCount; i++)
66-
{
6776
statements.Add($"INSERT INTO time_entries VALUES ('{i}', 'Project{i % 100}', 'Task{i % 20}', '2024-01-{(i % 28) + 1:00} 09:00:00', '480', 'User{i % 10}')");
68-
}
6977
db.ExecuteBatchSQL(statements);
7078
sw.Stop();
7179
var insertTime = sw.Elapsed.TotalMilliseconds;
7280
Console.WriteLine($"SharpCoreDB Insert: {insertTime:F0}ms");
7381

74-
// Test Select with WHERE
7582
sw.Restart();
76-
for (int i = 0; i < 10; i++)
77-
{
78-
db.ExecuteSQL("SELECT * FROM time_entries WHERE project = 'Project50'");
79-
}
83+
for (int i = 0; i < 10; i++) db.ExecuteSQL("SELECT * FROM time_entries WHERE project = 'Project50'");
8084
sw.Stop();
8185
var selectTime = sw.Elapsed.TotalMilliseconds / 10;
8286
Console.WriteLine($"SharpCoreDB Select WHERE: {selectTime:F0}ms (avg of 10)");
8387

84-
// Test Select multiple records
8588
sw.Restart();
8689
db.ExecuteSQL("SELECT * FROM time_entries WHERE duration = '480'");
8790
sw.Stop();
8891
var selectMultipleTime = sw.Elapsed.TotalMilliseconds;
8992
Console.WriteLine($"SharpCoreDB Select Multiple: {selectMultipleTime:F0}ms");
9093

91-
return (insertTime, selectTime, selectMultipleTime);
94+
Console.WriteLine("=== Indexed SELECT benchmark (1000 lookups) ===");
95+
db.ExecuteSQL("CREATE TABLE Test (Id INTEGER, Name TEXT)");
96+
97+
var testBatch = new List<string>();
98+
for (int i = 0; i < recordCount; i++) testBatch.Add($"INSERT INTO Test VALUES ({i}, 'Test{i}')");
99+
db.ExecuteBatchSQL(testBatch);
100+
101+
var swIndexed = Stopwatch.StartNew();
102+
for (int i = 0; i < 1000; i++) db.ExecuteSQL("SELECT * FROM Test WHERE Id = 5000");
103+
swIndexed.Stop();
104+
105+
double avg = swIndexed.Elapsed.TotalMilliseconds / 1000;
106+
Console.WriteLine($"1000 SELECTs took {swIndexed.ElapsedMilliseconds:F1} ms ? {avg:F3} ms/query");
107+
108+
return (insertTime, selectTime, selectMultipleTime, swIndexed.Elapsed.TotalMilliseconds);
92109
}
93110
finally
94111
{
@@ -157,4 +174,5 @@ private static (double InsertTime, double SelectTime, double SelectMultipleTime)
157174
File.Delete(dbPath);
158175
}
159176
}
177+
160178
}

‎SharpCoreDB.Benchmarks/SharpCoreDB.Benchmarks.csproj‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
<PackageReference Include="BenchmarkDotNet" Version="0.15.8" />
99
<PackageReference Include="Microsoft.VisualStudio.DiagnosticsHub.BenchmarkDotNetDiagnosers" Version="18.3.36726.2" />
1010
<PackageReference Include="System.Data.SQLite.Core" Version="1.0.119" />
11-
<PackageReference Include="Bogus" Version="35.6.1" />
11+
<PackageReference Include="Bogus" Version="35.6.5" />
1212
<PackageReference Include="LiteDB" Version="5.0.21" />
1313
</ItemGroup>
1414

‎SharpCoreDB.Demo/SharpCoreDB.Demo.csproj‎

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -12,9 +12,9 @@
1212
<ProjectReference Include="..\SharpCoreDB\SharpCoreDB.csproj" />
1313
</ItemGroup>
1414
<ItemGroup>
15-
<PackageReference Include="Serilog" Version="4.0.0" />
16-
<PackageReference Include="Serilog.Sinks.Console" Version="6.0.0" />
17-
<PackageReference Include="Serilog.Extensions.Logging" Version="8.0.0" />
15+
<PackageReference Include="Serilog" Version="4.3.0" />
16+
<PackageReference Include="Serilog.Sinks.Console" Version="6.1.1" />
17+
<PackageReference Include="Serilog.Extensions.Logging" Version="10.0.0" />
1818
</ItemGroup>
1919

2020
</Project>

‎SharpCoreDB.Tests/HashIndexTests.cs‎

Lines changed: 32 additions & 35 deletions
Original file line numberDiff line numberDiff line change
@@ -17,20 +17,18 @@ public void HashIndex_AddAndLookup_FindsRows()
1717
var row3 = new Dictionary<string, object> { { "id", 1 }, { "name", "Alice2" } };
1818

1919
// Act
20-
index.Add(row1);
21-
index.Add(row2);
22-
index.Add(row3);
20+
index.Add(row1, 0);
21+
index.Add(row2, 1);
22+
index.Add(row3, 2);
2323

24-
var results1 = index.Lookup(1);
25-
var results2 = index.Lookup(2);
26-
var results3 = index.Lookup(999);
24+
var positions1 = index.LookupPositions(1);
25+
var positions2 = index.LookupPositions(2);
26+
var positions3 = index.LookupPositions(999);
2727

2828
// Assert
29-
Assert.Equal(2, results1.Count); // Two rows with id=1
30-
Assert.Single(results2); // One row with id=2
31-
Assert.Empty(results3); // No rows with id=999
32-
Assert.Equal("Alice", results1[0]["name"]);
33-
Assert.Equal("Bob", results2[0]["name"]);
29+
Assert.Equal(2, positions1.Count); // Two rows with id=1
30+
Assert.Single(positions2); // One row with id=2
31+
Assert.Empty(positions3); // No rows with id=999
3432
}
3533

3634
[Fact]
@@ -41,7 +39,7 @@ public void HashIndex_ContainsKey_ReturnsCorrectly()
4139
var row1 = new Dictionary<string, object> { { "category", "Electronics" }, { "name", "Laptop" } };
4240

4341
// Act
44-
index.Add(row1);
42+
index.Add(row1, 0);
4543

4644
// Assert
4745
Assert.True(index.ContainsKey("Electronics"));
@@ -58,17 +56,16 @@ public void HashIndex_Remove_RemovesRow()
5856
var row2 = new Dictionary<string, object> { { "id", 1 }, { "name", "Alice2" } };
5957

6058
// Act
61-
index.Add(row1);
62-
index.Add(row2);
63-
var beforeRemove = index.Lookup(1);
59+
index.Add(row1, 0);
60+
index.Add(row2, 1);
61+
var beforeRemove = index.LookupPositions(1);
6462

6563
index.Remove(row1);
66-
var afterRemove = index.Lookup(1);
64+
var afterRemove = index.LookupPositions(1);
6765

6866
// Assert
6967
Assert.Equal(2, beforeRemove.Count);
7068
Assert.Single(afterRemove);
71-
Assert.Equal("Alice2", afterRemove[0]["name"]);
7269
}
7370

7471
[Fact]
@@ -80,16 +77,16 @@ public void HashIndex_Clear_RemovesAllData()
8077
var row2 = new Dictionary<string, object> { { "id", 2 }, { "name", "Bob" } };
8178

8279
// Act
83-
index.Add(row1);
84-
index.Add(row2);
80+
index.Add(row1, 0);
81+
index.Add(row2, 1);
8582
Assert.Equal(2, index.Count);
8683

8784
index.Clear();
8885

8986
// Assert
9087
Assert.Equal(0, index.Count);
91-
Assert.Empty(index.Lookup(1));
92-
Assert.Empty(index.Lookup(2));
88+
Assert.Empty(index.LookupPositions(1));
89+
Assert.Empty(index.LookupPositions(2));
9390
}
9491

9592
[Fact]
@@ -109,8 +106,8 @@ public void HashIndex_Rebuild_RebuildsFromRows()
109106

110107
// Assert
111108
Assert.Equal(2, index.Count); // Two unique projects
112-
Assert.Equal(2, index.Lookup("Alpha").Count);
113-
Assert.Single(index.Lookup("Beta"));
109+
Assert.Equal(2, index.LookupPositions("Alpha").Count);
110+
Assert.Single(index.LookupPositions("Beta"));
114111
}
115112

116113
[Fact]
@@ -130,7 +127,7 @@ public void HashIndex_GetStatistics_ReturnsCorrectData()
130127
// Act
131128
foreach (var row in rows)
132129
{
133-
index.Add(row);
130+
index.Add(row, 0); // Dummy position
134131
}
135132

136133
var stats = index.GetStatistics();
@@ -150,12 +147,12 @@ public void HashIndex_NullKeys_AreIgnored()
150147
var row2 = new Dictionary<string, object> { { "name", "Bob" } }; // Missing email key
151148

152149
// Act
153-
index.Add(row1);
154-
index.Add(row2);
150+
index.Add(row1, 0);
151+
index.Add(row2, 1);
155152

156153
// Assert
157154
Assert.Equal(0, index.Count); // No keys added
158-
Assert.Empty(index.Lookup(null));
155+
Assert.Empty(index.LookupPositions(null));
159156
}
160157

161158
[Fact]
@@ -175,10 +172,10 @@ public void HashIndex_LargeDataSet_PerformsWell()
175172
{ "eventId", i },
176173
{ "timestamp", DateTime.UtcNow }
177174
};
178-
index.Add(row);
175+
index.Add(row, i);
179176
}
180177

181-
var lookupResults = index.Lookup(42); // Look up a specific user
178+
var lookupResults = index.LookupPositions(42); // Look up a specific user
182179

183180
// Assert
184181
Assert.Equal(uniqueUsers, index.Count); // 100 unique users
@@ -197,20 +194,20 @@ public void HashIndex_DifferentDataTypes_WorksCorrectly()
197194

198195
// Act & Assert - Integer keys
199196
var row1 = new Dictionary<string, object> { { "price", 100 }, { "name", "Item1" } };
200-
index.Add(row1);
201-
Assert.Single(index.Lookup(100));
197+
index.Add(row1, 0);
198+
Assert.Single(index.LookupPositions(100));
202199

203200
// String keys
204201
index.Clear();
205202
var row2 = new Dictionary<string, object> { { "price", "expensive" }, { "name", "Item2" } };
206-
index.Add(row2);
207-
Assert.Single(index.Lookup("expensive"));
203+
index.Add(row2, 0);
204+
Assert.Single(index.LookupPositions("expensive"));
208205

209206
// DateTime keys
210207
index.Clear();
211208
var date = DateTime.Parse("2024-01-01");
212209
var row3 = new Dictionary<string, object> { { "price", date }, { "name", "Item3" } };
213-
index.Add(row3);
214-
Assert.Single(index.Lookup(date));
210+
index.Add(row3, 0);
211+
Assert.Single(index.LookupPositions(date));
215212
}
216213
}

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