dummy constants

_example/trace/main.go

@@ -1,5 +1,3 @@
-// +build trace
-
 package main
 
 import (

tracecallback_noimpl.go

@@ -4,7 +4,20 @@ package sqlite3
 
 import "errors"
 
+// Trace... constants identify the possible events causing callback invocation.
+// Values are same as the corresponding SQLite Trace Event Codes.
+const (
+	TraceStmt    = uint32(0x01)
+	TraceProfile = uint32(0x02)
+	TraceRow     = uint32(0x04)
+	TraceClose   = uint32(0x08)
+)
+
 // RegisterAggregator register the aggregator.
 func (c *SQLiteConn) RegisterAggregator(name string, impl interface{}, pure bool) error {
 	return errors.New("This feature is not implemented")
 }
+
+func (c *SQLiteConn) SetTrace(requested *TraceConfig) error {
+	return errors.New("This feature is not implemented")
+}