假设我想创建一组唯一的边和顶点。
create vertex A set etc.
create vertex B set etc.
create edge AB, create edge AC,
并且所有这些边和顶点都是唯一的 - 因此一些命令在它们是唯一的时候可能会失败。
如何批处理这些命令,以确保即使某些命令失败,也会运行所有命令?
答案 0 :(得分:1)
我试过你的情况,我有一个带有name属性的Vertex类(唯一索引),你可以用不同的方式执行批处理命令:
<强>演播室强>
begin
LET a = create vertex User set name = 'John'
LET b = create vertex User set name = 'Jane'
LET c = create edge FriendOf from $a to $b
commit retry 100
return $c
Java API
OrientGraph g=new OrientGraph(currentPath);
String cmd = "begin\n";
cmd += "let $user2 = UPDATE User SET user_id = 'userX' UPSERT RETURN AFTER @rid WHERE user_id = 'userX'\n";
cmd += "let $service = UPDATE Service SET service = 'serviceX' UPSERT RETURN AFTER @rid WHERE service = 'serviceX'\n";
cmd += "CREATE edge link FROM $user2 TO $service\n";
cmd += "commit";
g.command(new OCommandScript("sql", cmd)).execute();
<强>控制台强>
使用您的代码创建一个.txt文件:
connect remote:localhost/stack49801389 root root
begin
create vertex User set name = 'John'
create vertex User set name = 'Jane'
create edge FriendOf from $a to $b
commit retry 100
return $c
然后通过控制台
有关详细信息,请查看此link
希望有所帮助
此致