Fix QueryCache integration and Database test service registration

Co-authored-by: MPCoreDeveloper <37024522+MPCoreDeveloper@users.noreply.github.com>

Author: Copilot

SharpCoreDB.Tests/DatabaseTests.cs

@@ -42,16 +42,7 @@ public void Dispose()
     public void Database_ExecuteSQL_ParameterizedQuery_BindsParametersCorrectly()
     {
         // Arrange
-        var mockStorage = new Mock<IStorage>();
-        var mockCrypto = new Mock<ICryptoService>();
-        var mockUserService = new Mock<IUserService>();
-        var services = new ServiceCollection();
-        services.AddSingleton(mockCrypto.Object);
-        services.AddSingleton(mockStorage.Object);
-        services.AddSingleton(mockUserService.Object);
-        var serviceProvider = services.BuildServiceProvider();
-
-        var db = new Database(serviceProvider, _testDbPath, "password");
+        var db = _factory.Create(_testDbPath, "password");
         db.ExecuteSQL("CREATE TABLE users (id INTEGER, name TEXT)");
         var parameters = new Dictionary<string, object?> { { "0", 1 }, { "1", "Alice" } };
 

SharpCoreDB/Services/SqlParser.cs

@@ -83,9 +83,30 @@ public void Execute(string sql, Dictionary<string, object?> parameters, IWAL? wa
             sql = this.SanitizeSql(sql);
         }
 
-        // Proceed with existing logic
-        var parts = sql.Trim().Split(' ', StringSplitOptions.RemoveEmptyEntries);
-        this.ExecuteInternal(sql, parts, wal, originalSql ?? sql);
+        // Use query cache if available
+        string cacheKey = originalSql ?? sql;
+        string[] parts;
+        
+        if (this.queryCache != null)
+        {
+            var cached = this.queryCache.GetOrAdd(cacheKey, key =>
+            {
+                var parsedParts = sql.Trim().Split(' ', StringSplitOptions.RemoveEmptyEntries);
+                return new QueryCache.CachedQuery
+                {
+                    Sql = key,
+                    Parts = parsedParts,
+                    CachedAt = DateTime.UtcNow
+                };
+            });
+            parts = cached.Parts;
+        }
+        else
+        {
+            parts = sql.Trim().Split(' ', StringSplitOptions.RemoveEmptyEntries);
+        }
+        
+        this.ExecuteInternal(sql, parts, wal, cacheKey);
     }
 
     /// <summary>