Bug/vspc 177 (#238)

* [VSPC-177] fixed registration issue; attempt to fix space not found

fixed issue when no exhibition mode has been set yet

* [VSPC-177] removed commented out code

* [VSPC-177] fixed test cases

* [VSPC-177] catch exception if incomplete spacelinks exist in the data

* [VSPC-177] ignore if no source space exists

vspace/src/main/java/edu/asu/diging/vspace/core/model/impl/SpaceLink.java

@@ -29,6 +29,7 @@ public class SpaceLink extends VSpaceElement implements ISpaceLink {
     @JsonIgnore
     @ManyToOne(targetEntity=Space.class)
     @JoinColumn(name = "source_space_id")
+    @NotFound(action=NotFoundAction.IGNORE)
     private ISpace sourceSpace;
 
     @ManyToOne(targetEntity=Space.class)

vspace/src/main/java/edu/asu/diging/vspace/core/services/impl/SpaceManager.java

@@ -287,14 +287,7 @@ public Iterable<Space> addIncomingLinkInfoToSpaces(Iterable<Space> spaces) {
         Iterator<Space> iterator = spaces.iterator();
         while (iterator.hasNext()) {
             Space space = iterator.next();
-            try {
-                space.setIncomingLinks((spaceLinkRepo.findByTargetSpace(space)).size() > 0 ? true : false);
-            } catch (EntityNotFoundException ex) {
-                // if the data is incomplete this might happen (e.g. spaces used in links
-                // don't exist anymore.
-                space.setIncomingLinks(false);
-                logger.error("Could not load space links.", ex);
-            }
+            space.setIncomingLinks((spaceLinkRepo.findByTargetSpace(space)).size() > 0 ? true : false);
         }
         return spaces;
     }