Hi All,
no idea for my problem?
Thanks
Leo
Il giorno mercoledì 4 gennaio 2017 19:54:56 UTC+1, Leonardo Straniero ha
scritto:
>
> Hi All,
> i'm use the OrientDb batch rest api to interact with my OrientDB database.
> Now i have a specific need.
>
> i want create a vertex only if this vertex not exists.
>
> Then i write this lines of code with the IF condition but the statement in
> the if condition is never executed. How is possible test if the root_node
> not exist and then create it? This is my postData code
>
> var postData = JSON.stringify({ "transaction" : true,
> "operations" : [
> {
> "type" : "script",
> "language" : "sql",
> "script" : [
> "LET root_node = SELECT FROM PowerSolution WHERE
> Site_User ='" + message.Site_User + "' AND uuid = '"+ message.StartTime +
> "'",
> "IF($root_node IS NULL){",
> "LET new_root_node = CREATE VERTEX PowerSolution SET
> Site_User ='" + message.Site_User + "', uuid = '"+ message.StartTime + "'",
> "}"
> ]
> }
> ]
> });
> Also with $root_node == NULL condition the result don't change
> Any suggestion will be appreciated.
>
> Thanks in advance.
> Best regards and happy new year
> Leo
>
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