NH-3193 - Port-back string functions to MsSqlCeDialect

Author: hazzik

src/NHibernate/Dialect/MsSqlCeDialect.cs

@@ -53,6 +53,16 @@ public MsSqlCeDialect()
 			RegisterFunction("month", new SQLFunctionTemplate(NHibernateUtil.Int32, "datepart(month, ?1)"));
 			RegisterFunction("year", new SQLFunctionTemplate(NHibernateUtil.Int32, "datepart(year, ?1)"));
 
+			RegisterFunction("length", new StandardSQLFunction("len", NHibernateUtil.Int32));
+			RegisterFunction("locate", new StandardSQLFunction("charindex", NHibernateUtil.Int32));
+			RegisterFunction("replace", new StandardSafeSQLFunction("replace", NHibernateUtil.String, 3));
+			RegisterFunction("rtrim", new StandardSQLFunction("rtrim"));
+			RegisterFunction("ltrim", new StandardSQLFunction("ltrim"));
+			RegisterFunction("upper", new StandardSQLFunction("upper"));
+			RegisterFunction("lower", new StandardSQLFunction("lower"));
+
+			RegisterFunction("trim", new AnsiTrimEmulationFunction());
+
 			DefaultProperties[Environment.ConnectionDriver] = "NHibernate.Driver.SqlServerCeDriver";
 			DefaultProperties[Environment.PrepareSql] = "false";
 		}