isolation level context

driver_go18.go

@@ -26,6 +26,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 package firebirdsql
 
 import (
+	"database/sql"
 	"database/sql/driver"
 	"errors"
 
@@ -52,7 +53,23 @@ func (stmt *firebirdsqlStmt) QueryContext(ctx context.Context, namedargs []drive
 
 func (fc *firebirdsqlConn) BeginContext(ctx context.Context) (driver.Tx, error) {
 	isolationLevel := ISOLATION_LEVEL_READ_COMMITED
-	readOnly := false
+	contextIsolationLevel, ok := driver.IsolationFromContext(ctx)
+	if ok {
+		switch (sql.IsolationLevel)(contextIsolationLevel) {
+		case sql.LevelDefault:
+			isolationLevel = ISOLATION_LEVEL_READ_COMMITED
+		case sql.LevelReadUncommitted:
+			isolationLevel = ISOLATION_LEVEL_READ_COMMITED_LEGACY
+		case sql.LevelReadCommitted:
+			isolationLevel = ISOLATION_LEVEL_READ_COMMITED
+		case sql.LevelRepeatableRead:
+			isolationLevel = ISOLATION_LEVEL_REPEATABLE_READ
+		case sql.LevelSerializable:
+			isolationLevel = ISOLATION_LEVEL_SERIALIZABLE
+		default:
+		}
+	}
+	readOnly := driver.ReadOnlyFromContext(ctx)
 	return fc.begin(isolationLevel, readOnly)
 }
 

utils.go

@@ -274,11 +274,10 @@ func parseDSN(dsn string) (addr string, dbName string, user string, passwd strin
 	values, ok = m["isolation_level"]
 	if ok {
 		var kv = map[string]int{
-			"READ_COMMITED_LEGACY":    ISOLATION_LEVEL_READ_COMMITED_LEGACY,
-			"READ_COMMITED":           ISOLATION_LEVEL_READ_COMMITED,
-			"REPEATABLE_READ":         ISOLATION_LEVEL_REPEATABLE_READ,
-			"SERIALIZABLE":            ISOLATION_LEVEL_SERIALIZABLE,
-			"READ_COMMITED_READ_ONLY": ISOLATION_LEVEL_READ_COMMITED_READ_ONLY,
+			"READ_COMMITED_LEGACY": ISOLATION_LEVEL_READ_COMMITED_LEGACY,
+			"READ_COMMITED":        ISOLATION_LEVEL_READ_COMMITED,
+			"REPEATABLE_READ":      ISOLATION_LEVEL_REPEATABLE_READ,
+			"SERIALIZABLE":         ISOLATION_LEVEL_SERIALIZABLE,
 		}
 		isolationLevel, ok = kv[values[0]]
 		if !ok {

utils_test.go

@@ -53,7 +53,6 @@ func TestDSNParse(t *testing.T) {
 		{"user:password@localhost/dbname?isolation_level=READ_COMMITED", "localhost:3050", "dbname", "user", "password", "", "Srp", true, 1},
 		{"user:password@localhost/dbname?isolation_level=REPEATABLE_READ", "localhost:3050", "dbname", "user", "password", "", "Srp", true, 2},
 		{"user:password@localhost/dbname?isolation_level=SERIALIZABLE", "localhost:3050", "dbname", "user", "password", "", "Srp", true, 3},
-		{"user:password@localhost/dbname?isolation_level=READ_COMMITED_READ_ONLY", "localhost:3050", "dbname", "user", "password", "", "Srp", true, 4},
 		{"user:password@localhost:3000/c:/fbdata/database.fdb?role=role&wire_crypt=false", "localhost:3000", "c:/fbdata/database.fdb", "user", "password", "role", "Srp", false, 1},
 	}