Refactor and optimization

DESCRIPTION

@@ -2,7 +2,7 @@ Type: Package
 Package: openalexR
 Title: Getting Bibliographic Records from 'OpenAlex' Database Using 'DSL'
     API
-Version: 1.2.2
+Version: 1.2.2.9999
 Authors@R: c(
     person(given = "Massimo",
            family = "Aria",

NEWS.md

@@ -1,4 +1,8 @@
 # openalexR (development version)
+* Breaking change: two arguments in `oa_snowball` are renamed:
+citing_filter is now citing_params,
+and cited_by_filter is now cited_by_params.
+* improve `oa_snowball` performance
 * allowed the use of `options$sample` with `search`
 
 # openalexR 1.2.2

R/oa2df.R

@@ -60,8 +60,6 @@ oa2df <- function(data, entity, options = NULL, count_only = FALSE, group_by = N
   }
 
   if (entity != "snowball"){
-    # replace NULL with NA
-    data <- simple_rapply(data, `%||%`, y = NA)
     ch <- ifelse(is.null(options$select), "id", options$select[[1]])
     if (!is.null(data[[ch]])) {
       data <- list(data)
@@ -190,7 +188,6 @@ works2df <- function(data, abstract = TRUE, verbose = TRUE) {
     if (verbose) pb$tick()
 
     paper <- data[[i]]
-    paper <- simple_rapply(paper, `%||%`, y = NA)
 
     fields <- works_process[works_process$field %in% names(paper), ]
     sim_fields <- mapply(
@@ -310,7 +307,6 @@ abstract_build <- function(ab) {
 #'
 #' @export
 authors2df <- function(data, verbose = TRUE) {
-
   n <- length(data)
   pb <- oa_progress(n)
   list_df <- vector(mode = "list", length = n)
@@ -408,7 +404,6 @@ authors2df <- function(data, verbose = TRUE) {
 #'
 #' @export
 institutions2df <- function(data, verbose = TRUE) {
-
   n <- length(data)
   pb <- oa_progress(n)
   list_df <- vector(mode = "list", length = n)

R/oa_fetch.R

@@ -53,7 +53,7 @@
 #' )
 #'
 #' oa_fetch(
-#'   identifier = c("A923435168", "A2208157607"),
+#'   identifier = c("A5069892096", "A5023888391"),
 #'   verbose = TRUE
 #' )
 #' }
@@ -213,11 +213,11 @@
 #'   verbose = FALSE
 #' )
 #'
-#' #  The author Massimo Aria is associated to the OpenAlex-id A923435168.
+#' #  The author Massimo Aria is associated to the OpenAlex-id A5069892096.
 #'
 #'
 #' query_author <- oa_query(
-#'   identifier = "A923435168",
+#'   identifier = "A5069892096",
 #'   entity = "authors",
 #'   endpoint = "https://api.openalex.org"
 #' )
@@ -458,6 +458,8 @@
 #' Defaults to endpoint = "https://api.openalex.org".
 #' @param verbose Logical. If TRUE, print information on querying process.
 #' Default to \code{verbose = FALSE}.
+#' To shorten the printed query URL, set the environment variable openalexR.print
+#' to the number of characters to print: \code{Sys.setenv(openalexR.print = 70)}.
 #' @param \dots Additional filter arguments.
 #'
 #' @return a character containing the query in OpenAlex format.
@@ -469,7 +471,7 @@
 #' @examples
 #' \dontrun{
 #'
-#' query_auth <- oa_query(identifier = "A923435168", verbose = TRUE)
+#' query_auth <- oa_query(identifier = "A5069892096", verbose = TRUE)
 #'
 #' ### EXAMPLE 1: Full record about an entity.
 #'
@@ -487,9 +489,9 @@
 #' )
 #'
 #'
-#' #  The author Massimo Aria is associated to the OpenAlex-id A923435168:
+#' #  The author Massimo Aria is associated to the OpenAlex-id A5069892096:
 #'
-#' query_auth <- oa_query(identifier = "A923435168", verbose = TRUE)
+#' query_auth <- oa_query(identifier = "A5069892096", verbose = TRUE)
 #'
 #'
 #' ### EXAMPLE 2: all works citing a particular work.
@@ -586,7 +588,15 @@
     query = query
   )
 
-  if (verbose) message("Requesting url: ", query_url)
+  if (is.null(oa_print())){
+    url_display <- query_url
+  } else {
+    query_url <- utils::URLdecode(query_url)
+    query_url_more <- if (oa_print() < nchar(query_url)) "..."
+    url_display <- paste0(substr(query_url, 1, oa_print()), query_url_more)
+  }
+
+  if (verbose) message("Requesting url: ", url_display)
 
   query_url
 }

R/oa_snowball.R

@@ -8,8 +8,8 @@
 #' for example, W2755950973.
 #' If "original", the OpenAlex IDs are kept as are,
 #' for example, https://openalex.org/W2755950973
-#' @param citing_filter filters used in the search of works citing the input works.
-#' @param cited_by_filter filters used in the search of works cited by the input works.
+#' @param citing_params parameters used in the search of works citing the input works.
+#' @param cited_by_params parameters used in the search of works cited by the input works.
 #' @inheritParams oa_fetch
 #'
 #'
@@ -28,8 +28,8 @@
 #'
 #' snowball_docs <- oa_snowball(
 #'   identifier = c("W2741809807", "W2755950973"),
-#'   citing_filter = list(from_publication_date = "2022-01-01"),
-#'   cited_by_filter = list(),
+#'   citing_params = list(from_publication_date = "2022-01-01"),
+#'   cited_by_params = list(),
 #'   verbose = TRUE
 #' )
 #' }
@@ -39,8 +39,8 @@
                         mailto = oa_email(),
                         endpoint = "https://api.openalex.org",
                         verbose = FALSE,
-                        citing_filter = list(),
-                        cited_by_filter = list()) {
+                        citing_params = list(),
+                        cited_by_params = list()) {
   id_type <- match.arg(id_type)
   base_args <- list(
     entity = "works",
@@ -51,20 +51,30 @@
   )
 
   # collecting records about the target papers
-  paper <- do.call(oa_fetch, c(base_args, list(identifier = identifier), list(...)))
+  paper <- fetch_snow(
+    c(base_args, list(identifier = identifier)),
+    list(...)
+  )
 
   # fetching documents citing the target papers
   identifier <- shorten_oaid(paper$id)
   if (verbose) message("Collecting all documents citing the target papers...")
   citing <- suppressWarnings(
-    do.call(oa_fetch, c(base_args, list(cites = identifier), citing_filter))
+    fetch_snow(
+      c(base_args, list(cites = identifier)),
+      citing_params
+    )
   )
 
   # fetching documents cited by the target papers
   if (verbose) message("Collecting all documents cited by the target papers...")
   cited <- suppressWarnings(
-    do.call(oa_fetch, c(base_args, list(cited_by = identifier), cited_by_filter))
+    fetch_snow(
+      c(base_args, list(cited_by = identifier)),
+      cited_by_params
+    )
   )
+
   # merging all documents in a single data frame
   if (is.null(citing)) {
     citing <- paper[0, TRUE]
@@ -110,3 +120,14 @@
 
   list(nodes = nodes, edges = edges)
 }
+
+
+fetch_snow <- function(args, filt){
+  if (!is.null(filt$options$select)){
+    # id and referenced_works is needed to find citing papers
+    filt$options$select <- union(filt$options$select, c("id", "referenced_works"))
+  }
+
+  # collecting records about the target papers
+  do.call(oa_fetch, c(args, filt))
+}

R/openalexR-internal.R

@@ -1,6 +1,11 @@
 .onAttach <- function(libname, pkgname) {
-  packageStartupMessage("Thank you for using openalexR!\n",
-    "To acknowledge our work, please cite the package by calling\n",
-    "`citation(\"openalexR\")`."
-  )
+  if (!grepl("suppress", Sys.getenv("openalexR.message"), ignore.case = TRUE)){
+    packageStartupMessage(
+      "Thank you for using openalexR!\n",
+      "To acknowledge our work, please cite the package by calling ",
+      "`citation(\"openalexR\")`.\n",
+      "To suppress this message, add `openalexR.message = suppressed` ",
+      "to your .Renviron file."
+    )
+  }
 }

R/utils.R

@@ -1,21 +1,11 @@
-# apply a function to all elements of a list
-
-simple_rapply <- function(x, fn, ...) {
-  if (is.list(x)) {
-    lapply(x, simple_rapply, fn, ...)
-  } else {
-    fn(x, ...)
-  }
-}
 
 `%||%` <- function(x, y) if (is.null(x)) y else x
 
 replace_w_na <- function(x){
   lapply(x, `%||%`, y = NA)
 }
 
-subs_na <- function(x, type = c("row_df", "col_df", "flat", "rbind_df", "identical"), prefix = NULL) {
-  type <- match.arg(type)
+subs_na <- function(x, type, prefix = NULL) {
   if (length(x) == 0) {
     return(NA)
   }
@@ -27,8 +17,7 @@
   out <- switch(type,
     row_df = as.data.frame(replace_w_na(x)),
     flat = unlist(x),
-    rbind_df = do.call(rbind.data.frame, lapply(x, replace_w_na)
-    )
+    rbind_df = do.call(rbind.data.frame, lapply(x, replace_w_na))
   )
 
   if (!is.null(prefix)) {
@@ -82,6 +71,14 @@
   email
 }
 
+oa_print <- function() {
+  p <- as.integer(Sys.getenv("openalexR.print"))
+  if (is.na(p)){
+    return(NULL)
+  }
+  p
+}
+
 oa_apikey <- function() {
   apikey <- Sys.getenv("openalexR.apikey")
   if (apikey == "") {