Fetch: add support for shallow

This adds support for shallow cloning. The CloneCommand and the
FetchCommand now have the new methods setDepth, setShallowSince and
addShallowExclude to tell the server that the client doesn't want to
download the complete history.

Bug: 475615
Change-Id: Ic80fb6efb5474543ae59be590ebe385bec21cc0d

1 files changed, 22 insertions, 1 deletions

diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/ObjectDatabase.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/ObjectDatabase.java
index 70009cba35..1c0f436090 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/ObjectDatabase.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/ObjectDatabase.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2009, Google Inc. and others
+ * Copyright (C) 2009, 2022 Google Inc. and others
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Distribution License v. 1.0 which is available at
@@ -11,6 +11,7 @@
 package org.eclipse.jgit.lib;
 
 import java.io.IOException;
+import java.util.Set;
 
 import org.eclipse.jgit.errors.IncorrectObjectTypeException;
 import org.eclipse.jgit.errors.MissingObjectException;
@@ -72,6 +73,26 @@ public abstract class ObjectDatabase implements AutoCloseable {
 	public abstract ObjectReader newReader();
 
 	/**
+	 * @return the shallow commits of the current repository
+	 *
+	 * @throws IOException the database could not be read
+	 *
+	 * @since 6.3
+	 */
+	public abstract Set<ObjectId> getShallowCommits() throws IOException;
+
+	/**
+	 * Update the shallow commits of the current repository
+	 *
+	 * @param shallowCommits the new shallow commits
+	 *
+	 * @throws IOException the database could not be updated
+	 *
+	 * @since 6.3
+	 */
+	public abstract void setShallowCommits(Set<ObjectId> shallowCommits) throws IOException;
+
+	/**
 	 * Close any resources held by this database.
 	 */
 	@Override