1 files changed, 59 insertions, 0 deletions
diff --git a/framework/src/onos/utils/misc/src/main/java/org/onlab/graph/MutableGraph.java b/framework/src/onos/utils/misc/src/main/java/org/onlab/graph/MutableGraph.java
new file mode 100644
index 00000000..bd2b600c
--- /dev/null
+++ b/framework/src/onos/utils/misc/src/main/java/org/onlab/graph/MutableGraph.java
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2014 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onlab.graph;
+
+/**
+ * Abstraction of a mutable graph that can be constructed gradually.
+ */
+public interface MutableGraph<V extends Vertex, E extends Edge> extends Graph<V, E> {
+
+    /**
+     * Adds the specified vertex to this graph.
+     *
+     * @param vertex new vertex
+     */
+    void addVertex(V vertex);
+
+    /**
+     * Removes the specified vertex from the graph.
+     *
+     * @param vertex vertex to be removed
+     */
+    void removeVertex(V vertex);
+
+    /**
+     * Adds the specified edge to this graph. If the edge vertexes are not
+     * already in the graph, they will be added as well.
+     *
+     * @param edge new edge
+     */
+    void addEdge(E edge);
+
+    /**
+     * Removes the specified edge from the graph.
+     *
+     * @param edge edge to be removed
+     */
+    void removeEdge(E edge);
+
+    /**
+     * Returns an immutable copy of this graph.
+     *
+     * @return immutable copy
+     */
+    Graph<V, E> toImmutable();
+
+}