[EGIT PATCH 3/6] Add a method to get refs by object Id

[Robin Rosenberg <robin.rosenberg@dewire.com>]

Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>
---
 .../src/org/spearce/jgit/lib/Repository.java       |   28 ++++++++++++++++++++
 1 files changed, 28 insertions(+), 0 deletions(-)

diff --git a/org.spearce.jgit/src/org/spearce/jgit/lib/Repository.java b/org.spearce.jgit/src/org/spearce/jgit/lib/Repository.java
index dfce1b8..3fc5236 100644
--- a/org.spearce.jgit/src/org/spearce/jgit/lib/Repository.java
+++ b/org.spearce.jgit/src/org/spearce/jgit/lib/Repository.java
@@ -47,6 +47,7 @@
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.LinkedList;
 import java.util.List;
@@ -939,6 +940,33 @@ public String getBranch() throws IOException {
 	}
 
 	/**
+	 * @return a map with all objects referenced by a peeled ref.
+	 */
+	public Map<AnyObjectId, List<Ref>> getAllRefsByPeeledObjectId() {
+		Map<String, Ref> allRefs = getAllRefs();
+		HashMap<AnyObjectId, List<Ref>> ret = new HashMap<AnyObjectId, List<Ref>>(allRefs.size());
+		for (Map.Entry<String,Ref> e : allRefs.entrySet()) {
+			Ref ref = e.getValue();
+			AnyObjectId target = ref.getPeeledObjectId();
+			if (target == null)
+				target = ref.getObjectId();
+			List<Ref> list = ret.get(target);
+			if (list == null) {
+				list = Collections.singletonList(ref);
+			} else {
+				if (list.size() == 1) {
+					ArrayList<Ref> list2 = new ArrayList<Ref>(2);
+					list2.add(list.get(0));
+					list = list2;
+				}
+				list.add(ref);
+			}
+			ret.put(target, list);
+		}
+		return ret;
+	}
+
+	/**
 	 * @return true if HEAD points to a StGit patch.
 	 */
 	public boolean isStGitMode() {
-- 
1.6.0.1.310.gf789d0.dirty