Revert "Replace "year" by "date" as the fields returned are biblatex …

…fields"

This reverts commit b2c8db5.

src/main/java/net/sf/jabref/importer/fetcher/GVKParser.java

@@ -70,7 +70,7 @@ private BibEntry parseEntry(Element e) {
         String editor = null;
         String title = null;
         String publisher = null;
-        String date = null;
+        String year = null;
         String address = null;
         String series = null;
         String edition = null;
@@ -162,14 +162,15 @@ private BibEntry parseEntry(Element e) {
                 address = getSubfield("p", datafield);
             }
 
-            //date
+            //year
             if ("011@".equals(tag)) {
-                date = getSubfield("a", datafield);
+                year = getSubfield("a", datafield);
             }
 
-            //date, volume, number, pages (year bei Zeitschriften (evtl. redundant mit 011@))
+            //year, volume, number, pages (year bei Zeitschriften (evtl. redundant mit 011@))
             if ("031A".equals(tag)) {
-                date = getSubfield("j", datafield);
+                year = getSubfield("j", datafield);
+
                 volume = getSubfield("e", datafield);
                 number = getSubfield("a", datafield);
                 pages = getSubfield("h", datafield);
@@ -387,8 +388,8 @@ private BibEntry parseEntry(Element e) {
         if (publisher != null) {
             result.setField("publisher", publisher);
         }
-        if (date != null) {
-            result.setField("date", date);
+        if (year != null) {
+            result.setField("year", year);
         }
         if (address != null) {
             result.setField("address", address);

src/test/resources/net/sf/jabref/importer/fetcher/gvk_gmp.1.bib

@@ -1,12 +1,12 @@
 @Book{,
   Title                    = {GMP-Regelwerke für Arzneimittel},
   Publisher                = {Maas & Peither, GMP-Verl.},
+  Year                     = {2014},
   Address                  = {Schopfheim},
   Edition                  = {7., aktualisierte Aufl.},
   Note                     = {Text teilw. dt., teilw. engl.},
   Number                   = {7},
   Series                   = {Kleiner GMP-Berater},
-  Date                     = {2014},
   ISBN                     = {9783943267914},
   Pagetotal                = {310},
   Ppn_GVK                  = {785759913}

src/test/resources/net/sf/jabref/importer/fetcher/gvk_gmp.2.bib

@@ -1,12 +1,12 @@
 @Book{,
   Title                    = {GMP-Regelwerke für computergestützte Systeme},
   Publisher                = {Maas & Peither, GMP-Verl},
+  Year                     = {2014},
   Address                  = {Schopfheim},
   Edition                  = {4., aktual. Aufl.},
   Note                     = {Text teilw. dt. und engl},
   Number                   = {Bd. 5},
   Series                   = {Kleiner GMP-Berater},
-  Date                     = {2014},
   ISBN                     = {9783958070011},
   Pagetotal                = {142},
   Ppn_GVK                  = {810635399}

src/test/resources/net/sf/jabref/importer/fetcher/gvk_result_for_797485368.bib

@@ -1,10 +1,10 @@
 @Book{,
   Title                    = {GMP-Berater},
   Publisher                = {Maas und Peither GMP Verl.},
+  Year                     = {2014},
   Address                  = {Schopfheim},
   Number                   = {L - N},
   Volume                   = {Bd. I},
-  Date                     = {2014},
   Editor                   = {Anita Maas},
   Pagetotal                = {Losebl.-Ausg.},
   Ppn_GVK                  = {797485368},