Fix #1742 Import of GEXF format rearranges order of node attributes

modules/ImportAPI/src/main/java/org/gephi/io/importer/impl/ImportContainerImpl.java

@@ -45,8 +45,8 @@ import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
 import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
 import it.unimi.dsi.fastutil.objects.Object2IntMap;
 import it.unimi.dsi.fastutil.objects.Object2IntOpenHashMap;
+import it.unimi.dsi.fastutil.objects.Object2ObjectLinkedOpenHashMap;
 import it.unimi.dsi.fastutil.objects.Object2ObjectMap;
-import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
 import it.unimi.dsi.fastutil.objects.ObjectArrayList;
 import it.unimi.dsi.fastutil.objects.ObjectList;
 import java.util.ArrayList;
@@ -132,8 +132,8 @@ public class ImportContainerImpl implements Container, ContainerLoader, Containe
         edgeTypeMap = new Object2IntOpenHashMap();
         edgeTypeSets = new Long2ObjectMap[0];
         factory = new ElementFactoryImpl(this);
-        nodeColumns = new Object2ObjectOpenHashMap<>();
-        edgeColumns = new Object2ObjectOpenHashMap<>();
+        nodeColumns = new Object2ObjectLinkedOpenHashMap<>();
+        edgeColumns = new Object2ObjectLinkedOpenHashMap<>();
     }
 
     @Override

modules/ImportPlugin/src/test/resources/org/gephi/io/importer/plugin/file/spreadsheet/expected/testNodesTableTypesTest_nodes.csv

-Id,Label,timeset,bigint,intervallongmap,long,int,double,string,boolean
-1,1,"<[1.0, 5.0]; [10.0, 10.5]; [11.0, 16.0]>",123456789123456789123456789123456789123456789123456789,"<[1.0, 2.0, 1]; [2.0, 3.0, 2]>",77,6,1,ab,false
-2,,"<[1.0, 5.0]; [10.0, 10.5]; [11.0, 16.0]>",2,"<[1.0, 2.0, 1234872492744446]>",77,77,2,cd,true
+Id,Label,timeset,int,long,double,boolean,string,intervallongmap,bigint
+1,1,"<[1.0, 5.0]; [10.0, 10.5]; [11.0, 16.0]>",6,77,1,false,ab,"<[1.0, 2.0, 1]; [2.0, 3.0, 2]>",123456789123456789123456789123456789123456789123456789
+2,,"<[1.0, 5.0]; [10.0, 10.5]; [11.0, 16.0]>",77,77,2,true,cd,"<[1.0, 2.0, 1234872492744446]>",2
 3,,,,,,,,,
 4,,,,,,,,,
-5,5,"<[1.0, 5.0]; [10.0, 10.5]; [11.0, 16.0]>",3,"<[-1.0, 5.0, 0]>",8889848888888888,88888,4.6,ef,true
\ No newline at end of file
+5,5,"<[1.0, 5.0]; [10.0, 10.5]; [11.0, 16.0]>",88888,8889848888888888,4.6,true,ef,"<[-1.0, 5.0, 0]>",3
\ No newline at end of file