maps_positions_range_data = tryCatch({
res <- read.csv(system.file("apps/brapi/data/maps_positions.csv", package = "brapiTS"),
stringsAsFactors = FALSE)
}, error = function(e) {
NULL
}
)
maps_positions_range_list = function(mapDbId = 0, linkageGroupId = 0,
min =0, max = 1000,
page = 0, pageSize = 100){
if(is.null(maps_positions_range_data)) return(NULL)
if(mapDbId > 0) {
maps_positions_range_data = maps_positions_range_data[maps_positions_range_data$mapDbId == mapDbId, ]
if(nrow(maps_positions_range_data) == 0) return(NULL)
}
if(all(linkageGroupId > 0)) {
maps_positions_range_data = maps_positions_range_data[maps_positions_range_data$linkageGroupId == linkageGroupId, ]
if(nrow(maps_positions_range_data) == 0) return(NULL)
}
if(all(c(min, max) >= 0)) {
maps_positions_range_data = maps_positions_range_data[maps_positions_range_data$location >= min & maps_positions_range_data$location <= max, ]
if(nrow(maps_positions_range_data) == 0) return(NULL)
}
# paging here after filtering
pg = paging(maps_positions_range_data, page, pageSize)
# omit mapDbId (1st column) for return object in this case
maps_positions_range_data <- maps_positions_range_data[pg$recStart:pg$recEnd, 2:4]
n = nrow(maps_positions_range_data)
out = list(n)
for(i in 1:n){
out[[i]] <- as.list(maps_positions_range_data[i, ])
}
attr(out, "pagination") = pg$pagination
out
}
maps_positions_range = list(
metadata = list(
pagination = list(
pageSize = 30,
currentPage = 0,
totalCount = nrow(maps_positions_range_data),
totalPages = 1
),
status = list(),
datafiles = list()
),
result = list(data = maps_positions_range_list())
)
process_maps_positions_range <- function(req, res, err){
prms <- names(req$params)
mapDbId <- basename(stringr::str_replace(req$path, "/positions/[0-9]{1,12}[/]?", "")) %>%
as.integer()
linkageGroupId = basename(req$path)
amin = ifelse('min' %in% prms, as.integer(req$params$min), 0)
amax = ifelse('max' %in% prms, as.integer(req$params$max), 1000)
page = ifelse('page' %in% prms, as.integer(req$params$page), 0)
pageSize = ifelse('pageSize' %in% prms, as.integer(req$params$pageSize), 30)
# message("===")
# message(paste("mapDbId", mapDbId))
# message(linkageGroupId)
# message(amin)
# message(amax)
# message(page)
# message(pageSize)
maps_positions_range$result$data = maps_positions_range_list(mapDbId, linkageGroupId, amin, amax, page, pageSize)
maps_positions_range$metadata$pagination = attr(maps_positions_range$result$data, "pagination")
if(is.null(maps_positions_range$result$data)){
res$set_status(404)
maps_positions_range$metadata <- brapi_status(100, "No matching results!")
}
res$set_header("Access-Control-Allow-Methods", "GET")
res$json(maps_positions_range)
}
mw_maps_positions_range <<-
collector() %>%
get("/brapi/v1/maps/[0-9]{1,12}/positions/[0-9]{1,12}[/]?", function(req, res, err){
process_maps_positions_range(req, res, err)
}) %>%
put("/brapi/v1/maps/[0-9]{1,12}/positions/[0-9]{1,12}[/]?", function(req, res, err){
res$set_status(405)
}) %>%
post("/brapi/v1/maps/[0-9]{1,12}/positions/[0-9]{1,12}[/]?", function(req, res, err){
res$set_status(405)
}) %>%
delete("/brapi/v1/maps/[0-9]{1,12}/positions/[0-9]{1,12}[/]?", function(req, res, err){
res$set_status(405)
})
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