From 36d325df5e4c04233b8046b13c05bb3c1676b0a2 Mon Sep 17 00:00:00 2001
From: jorainer <johannes.rainer@gmail.com>
Date: Fri, 23 Aug 2019 07:32:58 +0200
Subject: [PATCH] Ensure named character is returned by mapIds (issue #100)

---
 DESCRIPTION        | 2 +-
 R/select-methods.R | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/DESCRIPTION b/DESCRIPTION
index af25def..20bc714 100644
--- 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 = "johannes.rainer@eurac.edu",
 	   role = c("aut", "cre"),
diff --git a/R/select-methods.R b/R/select-methods.R
index ed44bcb..a975cef 100644
--- 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.