[sync] New 'Git Commit Model' implementation

New less memory consuming implementation of 'Git Commit Model'. It uses
cache providers added earlier for retrieving data from repository
instead of calculating changes in every model object.

This is only beginning of rewriting 'Git Commit Model'. Next commits
will ensure that cache objects are created only once and completely
destroyed after synchronization.

Change-Id: I6a5b9c05bc210ebf3627fa24745f7d3d48a74e06
Signed-off-by: Dariusz Luksza <dariusz@luksza.org>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

1 files changed, 10 insertions, 1 deletions

diff --git a/org.eclipse.egit.mylyn.ui/src/org/eclipse/egit/internal/mylyn/ui/commit/TaskReferenceFactory.java b/org.eclipse.egit.mylyn.ui/src/org/eclipse/egit/internal/mylyn/ui/commit/TaskReferenceFactory.java
index e9f0c2e97a..f201fdab91 100644
--- a/org.eclipse.egit.mylyn.ui/src/org/eclipse/egit/internal/mylyn/ui/commit/TaskReferenceFactory.java
+++ b/org.eclipse.egit.mylyn.ui/src/org/eclipse/egit/internal/mylyn/ui/commit/TaskReferenceFactory.java
@@ -24,6 +24,8 @@ import org.eclipse.core.runtime.Status;
 import org.eclipse.egit.core.Activator;
 import org.eclipse.egit.internal.mylyn.ui.EGitMylynUI;
 import org.eclipse.egit.ui.internal.synchronize.model.GitModelCommit;
+import org.eclipse.egit.ui.internal.synchronize.model.GitModelRepository;
+import org.eclipse.jgit.lib.AbbreviatedObjectId;
 import org.eclipse.jgit.lib.ConfigConstants;
 import org.eclipse.jgit.lib.Constants;
 import org.eclipse.jgit.lib.Repository;
@@ -119,7 +121,14 @@ public class TaskReferenceFactory implements IAdapterFactory {
 			commit = (RevCommit) element;
 		else if (element instanceof GitModelCommit) {
 			GitModelCommit modelCommit = (GitModelCommit) element;
-			commit = modelCommit.getBaseCommit();
+			if (!(modelCommit.getParent() instanceof GitModelRepository))
+				return null; // should never happen
+
+			GitModelRepository parent = (GitModelRepository) modelCommit.getParent();
+			Repository repo = parent.getRepository();
+			AbbreviatedObjectId id = modelCommit.getCachedCommitObj().getId();
+
+			commit = new RevWalk(repo).lookupCommit(id.toObjectId());
 		}
 		return commit;
 	}