added option for better reference names for excel sheets

src/main/java/org/gesis/dda/publishing/domain/impl/SmartExcelSheetBundlesSetSource.java

@@ -27,15 +27,18 @@ public class SmartExcelSheetBundlesSetSource implements BundlesSetSource {
     public SmartExcelSheetBundlesSetSource(Sheet sheet) {
 
         String sheetName = sheet.getSheetName();
-        this.reference = "excel-" + UUID.randomUUID().toString() + "@@" + sheetName;
+        String sheetType = sheetName.substring(sheetName.indexOf(";")+1);
+        sheetName = sheetName.substring(0, sheetName.indexOf(";"));
+        
+        this.reference = sheetName + "-" + UUID.randomUUID().toString() + "@@" + sheetName;
 
-        switch (sheetName) {
+        switch (sheetType) {
             case "journal article" : dcTypeStockMetadatum = new SimpleMetadatum("dc.type.stock", "article"); break;
             case "monograph" : dcTypeStockMetadatum = new SimpleMetadatum("dc.type.stock", "monograph"); break;
             case "collection" : dcTypeStockMetadatum = new SimpleMetadatum("dc.type.stock", "collection"); break;
             case "incollection" : dcTypeStockMetadatum = new SimpleMetadatum("dc.type.stock", "incollection"); break;
             case "recension" : dcTypeStockMetadatum = new SimpleMetadatum("dc.type.stock", "recension"); break;
-            default: log.warn("sheet has an unrecognized name: {}", sheetName);
+            default: log.warn("sheet has an unrecognized name: {}", sheetType);
         }
 
         this.sheet = sheet;