Support adding all refs to LogCommand

Bug: 353310
Change-Id: Ifa2e7ed58c7f2bdfe3aafbd500b5a38c1f94c2ec
Signed-off-by: Kevin Sawicki <kevin@github.com>

org.eclipse.jgit.test/tst/org/eclipse/jgit/api/LogCommandTest.java

@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2011, GitHub Inc.
+ * and other copyright owners as documented in the project's IP log.
+ *
+ * This program and the accompanying materials are made available
+ * under the terms of the Eclipse Distribution License v1.0 which
+ * accompanies this distribution, is reproduced below, and is
+ * available at http://www.eclipse.org/org/documents/edl-v10.php
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Eclipse Foundation, Inc. nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package org.eclipse.jgit.api;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+import org.eclipse.jgit.lib.Ref;
+import org.eclipse.jgit.lib.RepositoryTestCase;
+import org.eclipse.jgit.revwalk.RevCommit;
+import org.junit.Test;
+
+public class LogCommandTest extends RepositoryTestCase {
+
+	@Test
+	public void logAllCommits() throws Exception {
+		List<RevCommit> commits = new ArrayList<RevCommit>();
+		Git git = Git.wrap(db);
+
+		writeTrashFile("Test.txt", "Hello world");
+		git.add().addFilepattern("Test.txt").call();
+		commits.add(git.commit().setMessage("initial commit").call());
+
+		git.branchCreate().setName("branch1").call();
+		Ref checkedOut = git.checkout().setName("branch1").call();
+		assertEquals("refs/heads/branch1", checkedOut.getName());
+		writeTrashFile("Test1.txt", "Hello world!");
+		git.add().addFilepattern("Test1.txt").call();
+		commits.add(git.commit().setMessage("branch1 commit").call());
+
+		checkedOut = git.checkout().setName("master").call();
+		assertEquals("refs/heads/master", checkedOut.getName());
+		writeTrashFile("Test2.txt", "Hello world!!");
+		git.add().addFilepattern("Test2.txt").call();
+		commits.add(git.commit().setMessage("branch1 commit").call());
+
+		Iterator<RevCommit> log = git.log().all().call().iterator();
+		assertTrue(log.hasNext());
+		assertTrue(commits.contains(log.next()));
+		assertTrue(log.hasNext());
+		assertTrue(commits.contains(log.next()));
+		assertTrue(log.hasNext());
+		assertTrue(commits.contains(log.next()));
+		assertFalse(log.hasNext());
+	}
+}

org.eclipse.jgit/src/org/eclipse/jgit/api/LogCommand.java

@@ -55,6 +55,7 @@ import org.eclipse.jgit.errors.MissingObjectException;
 import org.eclipse.jgit.lib.AnyObjectId;
 import org.eclipse.jgit.lib.Constants;
 import org.eclipse.jgit.lib.ObjectId;
+import org.eclipse.jgit.lib.Ref;
 import org.eclipse.jgit.lib.Repository;
 import org.eclipse.jgit.revwalk.RevCommit;
 import org.eclipse.jgit.revwalk.RevWalk;
@@ -213,6 +214,24 @@ public class LogCommand extends GitCommand<Iterable<RevCommit>> {
 		return not(since).add(until);
 	}
 
+	/**
+	 * Add all refs as commits to start the graph traversal from.
+	 *
+	 * @see #add(AnyObjectId)
+	 * @return {@code this}
+	 * @throws IOException
+	 *             the references could not be accessed
+	 */
+	public LogCommand all() throws IOException {
+		for (Ref ref : getRepository().getAllRefs().values()) {
+			ObjectId objectId = ref.getPeeledObjectId();
+			if (objectId == null)
+				objectId = ref.getObjectId();
+			add(objectId);
+		}
+		return this;
+	}
+
 	/**
 	 * Show only commits that affect any of the specified paths. The path must
 	 * either name a file or a directory exactly. Note that regex expressions or