add nocascade method

engine.go

@@ -15,10 +15,11 @@ import (
 )
 
 const (
-	POSTGRES = "postgres"
-	SQLITE   = "sqlite3"
-	MYSQL    = "mysql"
-	MYMYSQL  = "mymysql"
+	POSTGRES   = "postgres"
+	SQLITE     = "sqlite3"
+	MYSQL      = "mysql"
+	MYMYSQL    = "mymysql"
+	ORACLE_OCI = "oci8"
 )
 
 // a dialect is a driver's wrapper
@@ -140,6 +141,12 @@ func (engine *Engine) NoCache() *Session {
 	return session.NoCache()
 }
 
+func (engine *Engine) NoCascade() *Session {
+	session := engine.NewSession()
+	session.IsAutoClose = true
+	return session.NoCascade()
+}
+
 // Set a table use a special cacher
 func (engine *Engine) MapCacher(bean interface{}, cacher Cacher) {
 	t := rType(bean)

session.go

@@ -129,6 +129,16 @@ func (session *Session) Cols(columns ...string) *Session {
 	return session
 }
 
+func (session *Session) NoCascade() *Session {
+	session.Statement.UseCascade = false
+	return session
+}
+
+/*
+func (session *Session) MustCols(columns ...string) *Session {
+	session.Statement.Must()
+}*/
+
 // Xorm automatically retrieve condition according struct, but
 // if struct has bool field, it will ignore them. So use UseBool
 // to tell system to do not ignore them.
@@ -635,11 +645,14 @@ func (session *Session) cacheGet(bean interface{}, sql string, args ...interface
 			newSession := session.Engine.NewSession()
 			defer newSession.Close()
 			cacheBean = reflect.New(structValue.Type()).Interface()
+			newSession.Id(id).NoCache()
 			if session.Statement.AltTableName != "" {
-				has, err = newSession.Id(id).NoCache().Table(session.Statement.AltTableName).Get(cacheBean)
-			} else {
-				has, err = newSession.Id(id).NoCache().Get(cacheBean)
+				newSession.Table(session.Statement.AltTableName)
 			}
+			if !session.Statement.UseCascade {
+				newSession.NoCascade()
+			}
+			has, err = newSession.Get(cacheBean)
 			if err != nil || !has {
 				return has, err
 			}
@@ -2129,7 +2142,7 @@ func (session *Session) innerInsert(bean interface{}) (int64, error) {
 	}
 	// --
 
-	colNames, args, err := table.genCols(session, bean, false, false)
+	colNames, args, err := table.genCols(session, bean, true, false)
 	if err != nil {
 		return 0, err
 	}