ds.listServersideFunctions {dsBaseClient}

R Documentation

Lists server-side functions

Description

Lists all current server-side functions

Usage

ds.listServersideFunctions(datasources = NULL)

Arguments

datasources

a list of DSConnection-class objects obtained after login. If the datasources argument is not specified the default set of connections will be used: see datashield.connections_default.

Details

Uses datashield.methods function from DSI package to list all assign and aggregate functions on the available data repository servers. The only choice of arguments is in datasources; i.e. which studies to interrogate. Once the studies have been selected ds.listServersideFunctions lists all assign functions for all of these studies and then all aggregate functions for all of them.

This function does not call any server-side function.

Value

ds.listServersideFunctions returns to the client-side a list containing all server-side functions separately for each study. Firstly lists assign and then aggregate functions.

Author(s)

DataSHIELD Development Team

Examples

## Not run: 
 
  ## Version 6, for version 5 see Wiki
  # Connecting to the Opal servers
  
  require('DSI')
  require('DSOpal')
  require('dsBaseClient')

  builder <- DSI::newDSLoginBuilder()
  builder$append(server = "study1", 
                 url = "http://192.168.56.100:8080/", 
                 user = "administrator", password = "datashield_test&", 
                 table = "CNSIM.CNSIM1", driver = "OpalDriver")
  builder$append(server = "study2", 
                 url = "http://192.168.56.100:8080/", 
                 user = "administrator", password = "datashield_test&", 
                 table = "CNSIM.CNSIM2", driver = "OpalDriver")
  builder$append(server = "study3",
                 url = "http://192.168.56.100:8080/", 
                 user = "administrator", password = "datashield_test&", 
                 table = "CNSIM.CNSIM3", driver = "OpalDriver")
  logindata <- builder$build()
  
  # Log onto the remote Opal training servers
  connections <- DSI::datashield.login(logins = logindata, assign = TRUE, symbol = "D")
  
  # List server-side functions
  
  ds.listServersideFunctions(datasources = connections)
            
  # Clear the Datashield R sessions and logout  
  datashield.logout(connections) 

## End(Not run)

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