Accessing objects in opencpu sessions

问题:

How do I access a specific object in an opencpu "session" in a subsequent function call?

Given a request, say to

/ocpu/library/base/R/eval

with parameter

 expr = "x <- 10; y <- 20"

Which gives

/ocpu/tmp/x08dfddafe3/R/.val
/ocpu/tmp/x08dfddafe3/R/x
/ocpu/tmp/x08dfddafe3/R/y
/ocpu/tmp/x08dfddafe3/stdout 
/ocpu/tmp/x08dfddafe3/source
/ocpu/tmp/x08dfddafe3/console
/ocpu/tmp/x08dfddafe3/info

Now .val has the value 20.

Suppose I wanted to pass x to

ocpu/library/stats/R/rnorm

Is there a quick way to that, something like

n = x08dfddafe3/R/x

in "pseudo"...

回答1:

Great question. Starting version 1.4.4 there are two ways of doing this:

• You can use x08dfddafe3::x to refer to object x in the namespace of session x08dfddafe3.
• You can pass the full URL http://your.server.com/ocpu/tmp/x08dfddafe3/R/x/rds. If network permits, this will automaticaly grab the object and unserialize it.