547115 - ClassCastException in ReadRequestHandler#getODSColumns

Signed-off-by: Matthias Koller <m.koller@peak-solution.de>
diff --git a/src/main/java/org/eclipse/mdm/api/odsadapter/ReadRequestHandler.java b/src/main/java/org/eclipse/mdm/api/odsadapter/ReadRequestHandler.java
index 69c87f4..8a1aac1 100644
--- a/src/main/java/org/eclipse/mdm/api/odsadapter/ReadRequestHandler.java
+++ b/src/main/java/org/eclipse/mdm/api/odsadapter/ReadRequestHandler.java
@@ -258,7 +258,7 @@
 
 				Set<String> setColumnNames = mapColumns.keySet();
 
-				Map<Long, ColumnAttributes> mapColumnAttributes = new HashMap<>();
+				Map<String, ColumnAttributes> mapColumnAttributes = new HashMap<>();
 
 				for (Result result : query1.fetch(filter)) {
 					Map<String, Value> mapValues = result.getRecord(localColumnEntityType).getValues();
@@ -291,7 +291,7 @@
 					}
 				}
 
-				for (Map.Entry<Long, ColumnAttributes> me : mapColumnAttributes.entrySet()) {
+				for (Map.Entry<String, ColumnAttributes> me : mapColumnAttributes.entrySet()) {
 					ColumnAttributes ca = me.getValue();
 					listColumnPairs.add(new ImmutablePair<Column, ColumnAttributes>(mapColumns.get(ca.getName()), ca));
 				}