Add String.Replace handling in linq queries

Fixes #460
praeclarum · Aug 12, 2017 · 689ee77 · 689ee77
1 parent 44f2c5f
commit 689ee77
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diff --git a/src/SQLite.cs b/src/SQLite.cs
@@ -3333,6 +3333,9 @@ private CompileResult CompileExpr (Expression expr, List<object> queryArgs)
 				else if (call.Method.Name == "ToUpper") {
 					sqlCall = "(upper(" + obj.CommandText + "))";
 				}
+				else if (call.Method.Name == "Replace" && args.Length == 2) {
+					sqlCall = "(replace(" + obj.CommandText + "," + args[0].CommandText + "," + args[1].CommandText + "))";
+				}
 				else {
 					sqlCall = call.Method.Name.ToLower () + "(" + string.Join (",", args.Select (a => a.CommandText).ToArray ()) + ")";
 				}

diff --git a/tests/LinqTest.cs b/tests/LinqTest.cs
@@ -294,5 +294,27 @@ public void CastedParameters ()
 
 			Assert.AreEqual ("Foo", r.Value);
 		}
+
+		[Test]
+		public void Issue460_ReplaceWith2Args ()
+		{
+			var db = CreateDb ();
+			db.Trace = true;
+			db.Tracer = Console.WriteLine;
+
+			db.Insert (new Product {
+				Name = "I am not B X B",
+			});
+			db.Insert (new Product {
+				Name = "I am B O B",
+			});
+
+			var cl = (from c in db.Table<Product> ()
+			          where c.Name.Replace (" ", "").Contains ("BOB")
+					  select c).FirstOrDefault ();
+
+			Assert.AreEqual (2, cl.Id);
+			Assert.AreEqual ("I am B O B", cl.Name);
+		}
 	}
 }