[GBIF] add option to look for vector of taxa

GBIF/src/occurrence.jl

@@ -93,3 +93,18 @@ function occurrences(t::GBIFTaxon, query::Pair...)
     taxon_query = String(level) * "Key" => getfield(t, level).second
     return occurrences(taxon_query, query...)
 end
+
+"""
+    occurrences(t::Vector{GBIFTaxon}, query::Pair...)
+
+Returns occurrences for a series of taxa -- the query arguments are the same as the `occurrences` function.
+"""
+function occurrences(ts::Vector{GBIFTaxon}, query::Pair...)
+    taxon_query = []
+    for t in ts
+        levels = [:kingdom, :phylum, :class, :order, :family, :genus, :species]
+        level = levels[findlast(l -> getfield(t, l) !== missing, levels)]
+        push!(taxon_query, String(level) * "Key" => getfield(t, level).second)
+    end
+    return occurrences(taxon_query..., query...)
+end

GBIF/test/occurrences.jl

@@ -26,6 +26,12 @@ while length(obs) < count(obs)
 end
 @test length(obs) == count(obs)
 
+# Version with multiple taxa
+serval = GBIF.taxon("Leptailurus serval", strict=true)
+leopard = GBIF.taxon("Panthera pardus", strict=true)
+obs = occurrences([leopard, serval], "hasCoordinate" => true, "occurrenceStatus" => "PRESENT")
+@test typeof(obs) == GBIFRecords
+
 # Version with the full query AND a set page size - this one has about 250 records
 obs = occurrences(serval, "hasCoordinate" => "true", "continent" => "AFRICA", "decimalLongitude" => (-30, 40), "limit" => 45)
 while length(obs) < count(obs)