Ensure named character is returned by mapIds (issue #100)

jorainer · Aug 23, 2019 · 36d325d · 36d325d
1 parent b018701
commit 36d325d
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diff --git a/DESCRIPTION b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: ensembldb
 Type: Package
 Title: Utilities to create and use Ensembl-based annotation databases
-Version: 2.9.4
+Version: 2.9.5
 Authors@R: c(person(given = "Johannes", family = "Rainer",
 	   email = "[email protected]",
 	   role = c("aut", "cre"),

diff --git a/R/select-methods.R b/R/select-methods.R
@@ -343,7 +343,7 @@ setMethod("mapIds", "EnsDb", function(x, keys, column, keytype, ..., multiVals)
                vals <- split(res[, 2], f = factor(res[, 1],
                                                   levels = unique(theNames)))
                vals <- unlist(vals[lengths(vals) == 1])
-               if (length(vals)) vals else character()
+               if (length(vals)) vals else setNames(nm = character())
            },
            asNA = {
                ## Split the vector, set all those with multi mappings NA.