*: add admin cleanup table lock syntax (pingcap#323)

ast/ddl.go

@@ -1357,6 +1357,44 @@ func (n *UnlockTablesStmt) Restore(ctx *RestoreCtx) error {
  return nil
 }
 
+// CleanupTableLockStmt is a statement to cleanup table lock.
+type CleanupTableLockStmt struct {
+ ddlNode
+
+ Tables []*TableName
+}
+
+// Accept implements Node Accept interface.
+func (n *CleanupTableLockStmt) Accept(v Visitor) (Node, bool) {
+ newNode, skipChildren := v.Enter(n)
+ if skipChildren {
+ return v.Leave(newNode)
+ }
+ n = newNode.(*CleanupTableLockStmt)
+ for i := range n.Tables {
+ node, ok := n.Tables[i].Accept(v)
+ if !ok {
+ return n, false
+ }
+ n.Tables[i] = node.(*TableName)
+ }
+ return v.Leave(n)
+}
+
+// Restore implements Node interface.
+func (n *CleanupTableLockStmt) Restore(ctx *RestoreCtx) error {
+ ctx.WriteKeyWord("ADMIN CLEANUP TABLE LOCK ")
+ for i, v := range n.Tables {
+ if i != 0 {
+ ctx.WritePlain(", ")
+ }
+ if err := v.Restore(ctx); err != nil {
+ return errors.Annotatef(err, "An error occurred while restore CleanupTableLockStmt.Tables[%d]", i)
+ }
+ }
+ return nil
+}
+
 // TableOptionType is the type for TableOption
 type TableOptionType int