Embedding record from function in OrientDB

问题

I'd like to embed a record into another one using a function in OrientDB.

I have a class called Backup. Here's it's definition:

create class Backup extends V
create property Backup.dateTime datetime
create property Backup.record embedded V

What I want to do is to call an OrientDB function, passing it an arbitrary @rid, and it will make a backup of that record for me. Here's what I tried so far:

//function createBackup(id)

var gdb = orient.getGraphNoTx();

var rec = gdb.command("sql", "select from V where @rid = ?", [id]);

var v = gdb.command("sql", "create vertex Backup set dateTime = ?, record = ?", [(new Date().getTime()), rec[0].getRecord().toJSON()]);

...

Tried using rec[0], or rec[0].getRecord() instead, but function always throws an error at me. Any ideas?

回答1:

OrientDB - v2.0.6

var graph = orient.getGraphNoTx();

var query = "select @this.exclude('@rid').toJson() as json from V where @rid = " + id;
var result = graph.command("sql", query);

var command = "create vertex Backup " 
            + "set dateTime = " + new Date().getTime() + ", "
            + "    record   = " + result[0].getRecord().field('json');    
graph.command("sql", command);

return;

来源：https://stackoverflow.com/questions/29515487/embedding-record-from-function-in-orientdb