removes copying of EObjects to Export

EMF is not Threadsafe and will always be handled that way. Making a copy
is honourable, but will result in this case in a larger memory
footprint, that can be avoided.

Signed-off-by: Juergen Albert <j.albert@data-in-motion.biz>

org.gecko.emf.exporter.ods/bnd.bnd

@@ -1,4 +1,4 @@
-Bundle-Version: 1.0.1.SNAPSHOT
+Bundle-Version: 1.0.2.SNAPSHOT
 Bundle-Name: Gecko EMF ODS Exporter
 Bundle-Description: ODS (OpenDocument Spreadsheet) Exporter for EMF
 

org.gecko.emf.exporter.ods/src/org/gecko/emf/exporter/ods/EMFODSExporter.java

@@ -11,8 +11,6 @@
  */
 package org.gecko.emf.exporter.ods;
 
-import static java.util.stream.Collectors.toList;
-
 import java.io.OutputStream;
 import java.util.ArrayList;
 import java.util.Collection;
@@ -161,10 +159,8 @@ public void exportEObjectsTo(List<EObject> eObjects, OutputStream outputStream,
 				// lack id field
 				final Map<String, String> eObjectsPseudoIDs = new HashMap<String, String>();
 
-				final List<EObject> eObjectsSafeCopy = safeCopy(eObjects);
-
 				// pseudo IDs are needed before main processing starts
-				generatePseudoIDs(eObjectsSafeCopy, eObjectsPseudoIDs);
+				generatePseudoIDs(eObjects, eObjectsPseudoIDs);
 
 				// @formatter:off
 				createSheets(document, 
@@ -173,7 +169,7 @@ public void exportEObjectsTo(List<EObject> eObjects, OutputStream outputStream,
 						eObjectsEnums,
 						eObjectsPseudoIDs, 
 						eObjectsSheets,
-						eObjectsSafeCopy, 
+						eObjects, 
 						exportOptions);
 				// @formatter:on
 
@@ -184,7 +180,7 @@ public void exportEObjectsTo(List<EObject> eObjects, OutputStream outputStream,
 						eObjectsEnums,
 						eObjectsPseudoIDs, 
 						eObjectsSheets,
-						eObjectsSafeCopy, 
+						eObjects, 
 						exportOptions);
 				// @formatter:on
 
@@ -1336,8 +1332,4 @@ private String constructMetadataSheetName(String metadataSheetName) {
 	private boolean isProcessed(Set<String> eObjectsIdentifiers, EObject eObject) {
 		return eObjectsIdentifiers.contains(getEObjectIdentifier(eObject));
 	}
-
-	private List<EObject> safeCopy(List<EObject> eObjects) {
-		return EcoreUtil.copyAll(eObjects).stream().collect(toList());
-	}
 }