scorable: test for null strings

2 files changed, 5 insertions, 1 deletions

diff --git a/scalding/src/main/scala/sandcrawler/CrossrefScorable.scala b/scalding/src/main/scala/sandcrawler/CrossrefScorable.scala
index 4897b1c..ff8201a 100644
--- a/scalding/src/main/scala/sandcrawler/CrossrefScorable.scala
+++ b/scalding/src/main/scala/sandcrawler/CrossrefScorable.scala
@@ -34,6 +34,7 @@ object CrossrefScorable {
           if (titles.isEmpty || titles == null || doi.isEmpty || doi == null) {
             new MapFeatures(Scorable.NoSlug, json)
           } else {
+            // bnewbold: not checking that titles(0) is non-null/non-empty; case would be, in JSON, "title": [ null ]
             val sf : ScorableFeatures = new ScorableFeatures(title=titles(0), doi=doi)
             new MapFeatures(sf.toSlug, sf.toString)
           }
diff --git a/scalding/src/main/scala/sandcrawler/ScorableFeatures.scala b/scalding/src/main/scala/sandcrawler/ScorableFeatures.scala
index 5d6dea0..966fb93 100644
--- a/scalding/src/main/scala/sandcrawler/ScorableFeatures.scala
+++ b/scalding/src/main/scala/sandcrawler/ScorableFeatures.scala
@@ -6,7 +6,10 @@ import scala.util.parsing.json.JSONObject
 // with a second ScorableFeatures).
 class ScorableFeatures(title : String, year: Int = 0, doi : String = "", sha1: String = "") {
   def toMap() : Map[String, Any] = {
-    Map("title" -> title, "year" -> year, "doi" -> doi, "sha1" -> sha1)
+    Map("title" -> (if (title == null) "" else title),
+        "year" -> year,
+        "doi" -> (if (doi == null) "" else doi),
+        "sha1" -> (if (sha1 == null) "" else sha1))
   }
 
   override def toString() : String = {