1 files changed, 32 insertions, 0 deletions
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/ObjectIdSet.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/ObjectIdSet.java
new file mode 100644
index 0000000000..a0804f1e11
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+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/ObjectIdSet.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2015, 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
+ * https://www.eclipse.org/org/documents/edl-v10.php.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+package org.eclipse.jgit.lib;
+
+/**
+ * Simple set of ObjectIds.
+ * <p>
+ * Usually backed by a read-only data structure such as
+ * {@link org.eclipse.jgit.internal.storage.file.PackIndex}. Mutable types like
+ * {@link org.eclipse.jgit.lib.ObjectIdOwnerMap} also implement the interface by
+ * checking keys.
+ *
+ * @since 4.2
+ */
+public interface ObjectIdSet {
+	/**
+	 * Returns true if the objectId is contained within the collection.
+	 *
+	 * @param objectId
+	 *            the objectId to find
+	 * @return whether the collection contains the objectId.
+	 */
+	boolean contains(AnyObjectId objectId);
+}