1 files changed, 22 insertions, 0 deletions

diff --git a/src/main/java/IChannelNode.java b/src/main/java/IChannelNode.java
new file mode 100644
index 0000000..463f3ac
--- /dev/null
+++ b/src/main/java/IChannelNode.java
@@ -0,0 +1,22 @@
+import java.util.List;
+import java.util.Map;
+
+public interface IChannelNode {
+    enum Direction {
+        INCOMING,
+        OUTGOING,
+        BOTH
+    }
+
+    void setConnections(Map<IChannelNode, Integer> conmap, Direction dir);
+    void addConnection(IChannelNode node, Direction dir);
+    void addConnections(Iterable<IChannelNode> nodes, Direction dir);
+    void removeConnection(IChannelNode node, Direction dir);
+    void removeConnections(Iterable<IChannelNode> nodes, Direction dir);
+    void clearConnections(Direction dir);
+
+    boolean connectionExists(IChannelNode node, Direction dir);
+    Map<IChannelNode, Integer> getIncomingConnections();
+    Map<IChannelNode, Integer> getOutgoingConnections();
+    List<Map<IChannelNode, Integer>> getConnections(Direction dir);
+}