Repository: Deprecate getTags method

Callers should use getRefDatabase().getRefsByPrefix(R_TAGS) instead.

Adjust the tests accordingly.

Bug: 534731
Change-Id: Ib28ae365e42720268996ff46e34cae1745ad545c
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/TagTest.java

diff --git a/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/TagTest.java b/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/TagTest.java
index 03391a0..d38a41d 100644
--- a/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/TagTest.java
+++ b/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/TagTest.java
@@ -43,10 +43,11 @@
 package org.eclipse.jgit.pgm;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
 
 import org.eclipse.jgit.api.Git;
 import org.eclipse.jgit.lib.CLIRepositoryTestCase;
-import org.eclipse.jgit.lib.Ref;
 import org.junit.Before;
 import org.junit.Test;
 
@@ -75,13 +76,9 @@ public void testTagTwice() throws Exception {
 	@Test
 	public void testTagDelete() throws Exception {
 		git.tag().setName("test").call();
-
-		Ref ref = git.getRepository().getTags().get("test");
-		assertEquals("refs/tags/test", ref.getName());
-
+		assertNotNull(git.getRepository().exactRef("refs/tags/test"));
 		assertEquals("", executeUnchecked("git tag -d test")[0]);
-		Ref deletedRef = git.getRepository().getTags().get("test");
-		assertEquals(null, deletedRef);
+		assertNull(git.getRepository().exactRef("refs/tags/test"));
 	}
 
 	@Test

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

diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/api/TagCommandTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/api/TagCommandTest.java
index 87098b6..3b29a5b 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/api/TagCommandTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/api/TagCommandTest.java
@@ -42,6 +42,7 @@
  */
 package org.eclipse.jgit.api;
 
+import static org.eclipse.jgit.lib.Constants.R_TAGS;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.fail;
 
@@ -135,26 +136,30 @@ public void testFailureOnSignedTags() throws GitAPIException {
 		}
 	}
 
+	private List<Ref> getTags() throws Exception {
+		return db.getRefDatabase().getRefsByPrefix(R_TAGS);
+	}
+
 	@Test
 	public void testDelete() throws Exception {
 		try (Git git = new Git(db)) {
 			git.commit().setMessage("initial commit").call();
 			Ref tagRef = git.tag().setName("tag").call();
-			assertEquals(1, db.getTags().size());
+			assertEquals(1, getTags().size());
 
 			List<String> deleted = git.tagDelete().setTags(tagRef.getName())
 					.call();
 			assertEquals(1, deleted.size());
 			assertEquals(tagRef.getName(), deleted.get(0));
-			assertEquals(0, db.getTags().size());
+			assertEquals(0, getTags().size());
 
 			Ref tagRef1 = git.tag().setName("tag1").call();
 			Ref tagRef2 = git.tag().setName("tag2").call();
-			assertEquals(2, db.getTags().size());
+			assertEquals(2, getTags().size());
 			deleted = git.tagDelete().setTags(tagRef1.getName(), tagRef2.getName())
 					.call();
 			assertEquals(2, deleted.size());
-			assertEquals(0, db.getTags().size());
+			assertEquals(0, getTags().size());
 		}
 	}
 
@@ -163,13 +168,13 @@ public void testDeleteFullName() throws Exception {
 		try (Git git = new Git(db)) {
 			git.commit().setMessage("initial commit").call();
 			Ref tagRef = git.tag().setName("tag").call();
-			assertEquals(1, db.getTags().size());
+			assertEquals(1, getTags().size());
 
 			List<String> deleted = git.tagDelete()
 					.setTags(Repository.shortenRefName(tagRef.getName())).call();
 			assertEquals(1, deleted.size());
 			assertEquals(tagRef.getName(), deleted.get(0));
-			assertEquals(0, db.getTags().size());
+			assertEquals(0, getTags().size());
 		}
 	}
 

org.eclipse.jgit/src/org/eclipse/jgit/lib/Repository.java

diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/Repository.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/Repository.java
index e7e2b00..2d34736 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/Repository.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/Repository.java
@@ -1108,7 +1108,9 @@ public Map<String, Ref> getAllRefs() {
 	 * @return mutable map of all tags; key is short tag name ("v1.0") and value
 	 *         of the entry contains the ref with the full tag name
 	 *         ("refs/tags/v1.0").
+	 * @deprecated use {@code getRefDatabase().getRefsByPrefix(R_TAGS)} instead
 	 */
+	@Deprecated
 	@NonNull
 	public Map<String, Ref> getTags() {
 		try {