Fixes #3 and prepares for v0.1.1 submission to CRAN

* Updated documentation to use Markdown thanks to roxygen2 6.0.0
* Added more links for learning SPARQL in context of Wikidata
  (see `help("WDQS", package = "WikidataQueryServiceR")`)
* Fixed a bug with JSON-formatted results (#3)

Author: bearloga

DESCRIPTION

@@ -1,7 +1,7 @@
 Package: WikidataQueryServiceR
 Title: API Client Library for 'Wikidata Query Service'
-Version: 0.1.0
-Date: 2017-01-17
+Version: 0.1.1
+Date: 2017-04-28
 Authors@R: c(
     person("Mikhail", "Popov", email = "mikhail@wikimedia.org",
            role = c("aut", "cre"), comment = "@bearloga on Twitter"),
@@ -23,4 +23,5 @@ BugReports: https://github.com/bearloga/WikidataQueryServiceR/issues
 License: MIT + file LICENSE
 Encoding: UTF-8
 LazyData: true
-RoxygenNote: 5.0.1
+Roxygen: list(markdown = TRUE)
+RoxygenNote: 6.0.1

NEWS.md

@@ -1,3 +1,16 @@
+WikidataQueryServiceR 0.1.1
+---------------------------
+
+## Changes
+
+* Updated documentation to use Markdown thanks to [roxygen2 6.0.0](https://blog.rstudio.org/2017/02/01/roxygen2-6-0-0/)
+* Added more links for learning SPARQL in context of Wikidata
+  (see `help("WDQS", package = "WikidataQueryServiceR")`)
+
+## Bug fixes
+
+* Fixed a bug with JSON-formatted results ([#3](https://github.com/bearloga/WikidataQueryServiceR/issues/3))
+
 WikidataQueryServiceR 0.1.0
 ---------------------------
 

R/query.R

@@ -3,44 +3,23 @@
 #' @param sparql_query SPARQL query (can be a vector of queries)
 #' @param format "simple" uses CSV and returns pure character data frame, while
 #'   "smart" fetches JSON-formatted data and returns a data frame with datetime
-#'   columns converted to POSIXlt
-#' @param ... Additional parameters to supply to \code{\link[httr]{GET}}
-#' @return A data.frame
+#'   columns converted to `POSIXlt`
+#' @param ... Additional parameters to supply to [httr::GET()]
+#' @return A `data.frame`
 #' @examples
-#' # Cats on Wikidata:
-#' sparql_query <- 'SELECT ?item ?itemLabel
-#' WHERE
-#' {
-#'   ?item wdt:P31 wd:Q146 .
-#'   SERVICE wikibase:label { bd:serviceParam wikibase:language "en" }
-#' }
-#' LIMIT 10'
+#' # R's versions and release dates:
+#' sparql_query <- 'SELECT DISTINCT
+#'   ?softwareVersion ?publicationDate
+#' WHERE {
+#'   BIND(wd:Q206904 AS ?R)
+#'   ?R p:P348 [
+#'     ps:P348 ?softwareVersion;
+#'     pq:P577 ?publicationDate
+#'   ] .
+#' }'
 #' query_wikidata(sparql_query)
 #'
 #' \dontrun{
-#' sparql_query <- "#Recent Events
-#' SELECT ?event ?eventLabel ?date
-#' WHERE
-#' {
-#'   # find events
-#'   ?event wdt:P31/wdt:P279* wd:Q1190554.
-#'   # with a point in time or start date
-#'   OPTIONAL { ?event wdt:P585 ?date. }
-#'   OPTIONAL { ?event wdt:P580 ?date. }
-#'   # but at least one of those
-#'   FILTER(BOUND(?date) && DATATYPE(?date) = xsd:dateTime).
-#'   # not in the future, and not more than 31 days ago
-#'   BIND(NOW() - ?date AS ?distance).
-#'   FILTER(0 <= ?distance && ?distance < 31).
-#'   # and get a label as well
-#'   OPTIONAL {
-#'     ?event rdfs:label ?eventLabel.
-#'     FILTER(LANG(?eventLabel) = \"en\").
-#'   }
-#' }
-#' # limit to 10 results so we don't timeout
-#' LIMIT 10"
-#'
 #' # "smart" format converts all datetime columns to POSIXlt
 #' query_wikidata(sparql_query, format = "smart")
 #' }
@@ -77,9 +56,8 @@ query_wikidata <- function(sparql_query, format = c("simple", "smart"), ...) {
       )
       httr::stop_for_status(response)
       if (httr::http_type(response) == "application/sparql-results+json") {
-        temp <- jsonlite::read_json(httr::content(response, as = "text", encoding = "UTF-8"))
+        temp <- jsonlite::fromJSON(httr::content(response, as = "text", encoding = "UTF-8"), simplifyVector = FALSE)
       }
-      httr::stop_for_status(response)
       if (length(temp$results$bindings) > 0) {
         df <- as.data.frame(dplyr::bind_rows(lapply(temp$results$bindings, function(x) {
           return(lapply(x, function(y) { return(y$value) }))

R/utils.R

@@ -1,11 +1,11 @@
 #' @title Scrape an example SPARQL query from Wikidata
-#' @description Scrapes \href{https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples}{SPARQL query service examples page}
+#' @description Scrapes [SPARQL query service examples page](https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples)
 #'   for specified example(s). Requires rvest and urltools packages.
 #' @details If you are planning on scraping multiple examples, please provide
 #'   all the names as a single vector.
 #' @param example_name The names of the examples as they appear on
-#'   \href{https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples}{this page}
-#' @param ... Additional \code{httr} configurations passed to \code{rvest}
+#'   [this page](https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples)
+#' @param ... Additional `httr` configurations passed to `rvest`
 #' @return The SPARQL query as a character vector.
 #' @examples
 #' \dontrun{

R/wdqs.R

@@ -1,20 +1,23 @@
 #' @title WikidataQueryServiceR: An R Wrapper For Wikidata Query Service API
 #' @description This is an R wrapper for the
-#'   \href{https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service}{Wikidata Query Service}
+#'   [Wikidata Query Service](https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service)
 #'   (WDQS) which provides a way for tools to query Wikidata via
-#'   \href{https://en.wikipedia.org/wiki/SPARQL}{SPARQL}.
-#' @details \href{https://www.mediawiki.org/wiki/Wikidata_query_service}{Wikidata Query Service}
-#'   is maintained by Wikimedia Foundation's \href{https://www.mediawiki.org/wiki/Wikimedia_Discovery}{Discovery}
-#'   Department.
-#' @references \itemize{
-#'   \item \href{https://www.mediawiki.org/wiki/Wikidata_query_service/User_Manual}{WDQS User Manual}
-#'   \item \href{https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples}{SPARQL Query Examples} for WDQS
-#'   \item \href{http://programminghistorian.org/lessons/graph-databases-and-SPARQL}{Using SPARQL to access Linked Open Data}
-#'     by Matthew Lincoln
-#'   \item Interesting or illustrative \href{https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries}{SPARQL queries}
-#'     for Wikidata
-#'   \item Wikidata \href{https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/2016_SPARQL_Workshop}{2016 SPARQL Workshop}
-#' }
+#'   [SPARQL](https://en.wikipedia.org/wiki/SPARQL).
+#' @details [Wikidata Query Service](https://www.mediawiki.org/wiki/Wikidata_query_service)
+#'   is maintained by [Wikimedia Foundation](https://wikimediafoundation.org/).
+#' @references
+#' - [A beginner-friendly course for SPARQL](https://www.wikidata.org/wiki/Wikidata:A_beginner-friendly_course_for_SPARQL)
+#' - Building a SPARQL query: [Museums on Instagram](https://www.wikidata.org/wiki/Help:SPARQL/Building_a_query/Museums_on_Instagram)
+#' - [SPARQL Query Examples](https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples) for WDQS
+#' - [Using SPARQL to access Linked Open Data](http://programminghistorian.org/lessons/graph-databases-and-SPARQL)
+#'   by Matthew Lincoln
+#' - Interesting or illustrative [SPARQL queries](https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries)
+#'   for Wikidata
+#' - Wikidata [2016 SPARQL Workshop](https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/2016_SPARQL_Workshop)
+#' - [Wikidata SPARQL Query video tutorial](https://www.youtube.com/watch?v=1jHoUkj_mKw)
+#'   by Navino Evans
+#' - _[Learning SPARQL](http://www.learningsparql.com/)_ by Bob DuCharme
+#' - [WDQS User Manual](https://www.mediawiki.org/wiki/Wikidata_query_service/User_Manual)
 #' @aliases WDQS
 #' @docType package
 #' @name WDQS-package

README.md

@@ -11,6 +11,19 @@ __Author:__ Mikhail Popov (Wikimedia Foundation)<br/>
 __License:__ [MIT](http://opensource.org/licenses/MIT)<br/>
 __Status:__ Active
 
+## Installation
+
+```R
+install.packages("WikidataQueryServiceR")
+```
+    
+To install the development version:
+
+```R
+# install.packages(c("devtools", "httr", "dplyr", "jsonlite"))
+devtools::install_github("bearloga/WikidataQueryServiceR")
+```
+
 ## Example
 
 In this example, we find an "instance of" ([P31](https://www.wikidata.org/wiki/Property:P31)) "film" ([Q11424](https://www.wikidata.org/wiki/Q11424)) that has the label "The Cabin in the Woods" ([Q45394](https://www.wikidata.org/wiki/Q45394)), get its genres ([P136](https://www.wikidata.org/wiki/Property:P136)), and then use [WDQS label service](https://www.mediawiki.org/wiki/Wikidata_query_service/User_Manual#Label_service) to return the genre labels.
@@ -102,21 +115,6 @@ results$`Largest cities with female mayor`
 |http://www.wikidata.org/entity/Q1563  |Havana    |http://www.wikidata.org/entity/Q6774124  |Marta Hernández Romero |
 |http://www.wikidata.org/entity/Q19660 |Bucharest |http://www.wikidata.org/entity/Q16593781 |Gabriela Fireaa        |
 
-## Installation
-
-This R package depends on [httr](https://cran.r-project.org/package=httr), [dplyr](https://cran.r-project.org/package=dplyr), and [jsonlite](https://cran.r-project.org/package=jsonlite) R packages (and their dependencies).
-
-```R
-install.packages("WikidataQueryServiceR")
-```
-    
-To install the development version:
-
-```R
-# install.packages(c("devtools", "httr", "dplyr", "jsonlite"))
-devtools::install_github("bearloga/WikidataQueryServiceR")
-```
-
 ## Additional Information
 
 Please note that this project is released with a [Contributor Code of Conduct](https://github.com/bearloga/WikidataQueryServiceR/blob/master/CONDUCT.md). By participating in this project you agree to abide by its terms.

cran-comments.md

@@ -1,8 +1,8 @@
-WikidataQueryServiceR 0.1.0
+WikidataQueryServiceR 0.1.1
 ---------------------------
 
 ## Test environments
-* local OS X install, R 3.3.2
+* local macOS install, R 3.4.0
 * win-builder (devel and release)
 
 ## R CMD check results
@@ -12,35 +12,6 @@ There were no ERRORs or WARNINGs and 1 NOTE:
 * checking CRAN incoming feasibility ... NOTE
 Maintainer: 'Mikhail Popov <mikhail@wikimedia.org>'
 
-New submission
-
 Possibly mis-spelled words in DESCRIPTION:
-  API (2:8, 9:17)
-  
-Found the following (possibly) invalid URLs:
-  URL: https://cran.r-project.org/package=WikidataQueryServiceR
-    From: README.md
-    Status: 404
-    Message: Not Found
-```
-
-## R-hub Builder results
-Platforms:
-* Windows Server 2008 R2 SP1, R-devel, 32/64 bit
-* Fedora Linux, R-devel, clang, gfortran
-* Ubuntu Linux 16.04 LTS, R-release, GCC
-
-There were no ERRORs or WARNINGs and 1 NOTE:
-
-```
-N  checking CRAN incoming feasibility
-   Maintainer: 'Mikhail Popov <mikhail@wikimedia.org>'
-   
-   New submission
-   
-   License components with restrictions and base license permitting such:
-     MIT + file LICENSE
-   File 'LICENSE':
-     YEAR: 2016
-     COPYRIGHT HOLDER: Wikimedia Foundation
+  API (2:8, 10:17)
 ```