evalQuery: evalQuery

In baasman/allegRo: This package provides an interface for interacting with an Allegro Graph server

Description

Execute a SPARQL select query

Usage

evalQuery(repository, query, returnType = c("data.table", "dataframe",
  "matrix", "list"), infer = NULL, context = NULL, cleanUp = FALSE,
  namedContext = NULL, bindings = NULL, planner = NULL,
  checkVariables = NULL, limit = NULL, convert = FALSE)

Arguments

repository	Object of type repository specifying server details and repository to work on.
query	Sparql query to evaluate
returnType	In what format should the triples be returned. Can choose between "dataframe","matrix","list". Defaults to "list
infer	...
context	Can be a list. Specifies the contexts from which you want to query
cleanUp	If TRUE, removes the XML types of all variables. Currently for this to work, the return type needs to be a data.table. However, this is recommended either way.
namedContext	...
bindings	...
planner	...
checkVariables	If yes, then query warnings will cause the query to stop executing and fail.
limit	How many triples to return
convert	Convert variable to R type

Value

Triples in matrix form

Examples

## Not run: 
query = "select ?s ?p ?o {?s ?p ?o}"
service = service("localhost","user","password")
rep = repository(catalog(service,"root"),"root")
evalQuery(rep,
query = query, returnType = "data.table",
cleanUp = TRUE, limit = 10)

## End(Not run)

baasman/allegRo documentation built on May 11, 2019, 5:22 p.m.