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Update query to resemble osw search api changes #1

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Update query to resemble osw search api changes #1

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37 changes: 18 additions & 19 deletions R/OpenSensorWeb.R
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Original file line number Diff line number Diff line change
Expand Up @@ -82,40 +82,39 @@ x.osw.stations <- function(osw.url,
stop("Must specify network code or phenomenon for OSW request")

#set terms
terms = ''
if(!missing(osw.network)) terms <- paste0('{"terms": {"networkCode":["', paste0(osw.network, collapse="\",\""),'"]}}')
if(!missing(phenomenon)) terms <- paste0(if(terms == '') '' else paste0(terms, ','), '{"terms": {"phenomenon":["', paste0(phenomenon, collapse="\",\""),'"]}}')
networksQuery = ''
phenomenonQuery = ''
if(!missing(osw.network)) networksQuery <- paste0('"networks":["', paste0(osw.network, collapse="\",\""),'"],')
if(!missing(phenomenon)) phenomenonQuery <- paste0('"topic_phenomenons" : [{"topic": "Air and Atmosphere", "phenomenons":["', paste0(phenomenon, collapse="\",\""),'"]}],')

#build request
request <- paste0('{',
'"size" : 10000,',
'"query" : { "bool" : { "must" : { "match_all" : {} },',
'"filter" : [',
'{ "bool": { "must" : [', terms, '] } },',
'[{',
'"geo_bounding_box":{',
'"geometry" : {',
'"aggregation" : "NONE",',
'"fields":["device_code","network_code","phenomenon","sensor_code","geometry", "uom"],',
'"filters" : {',
phenomenonQuery,
networksQuery,
'"geo_bbox":{',
'"top_left" : {"lon":', extent[1], ', "lat":', extent[4], '},',
'"bottom_right" : {"lon":', extent[3], ', "lat":', extent[2], '}',
'}',
'}',
'}]',
']',
'}}}')
'}',
'}')

#request stations
response <- httr::POST(osw.url, httr::accept("application/json"), httr::content_type("application/json"), body=request)
content <- httr::content(response)
hits <- content$hits$hits
hits <- content

#parse response
osw.stations <- do.call(rbind, lapply(1:length(hits), function(x){
source <- hits[[x]][["_source"]]
source <- hits[[x]]

sp::SpatialPointsDataFrame(coords = source$geometry,
data = data.frame(
sensorCode = source$sensorCode,
networkCode = source$networkCode,
deviceCode = source$deviceCode,
sensorCode = source$sensor_code,
networkCode = source$network_code,
deviceCode = source$device_code,
phenomenon = source$phenomenon,
uom = source$uom,
stringsAsFactors = F),
Expand Down