Bug 868: Remove AD-SAL components which were deprecated in Lithium

[controller.git] / opendaylight / adsal / sal / api / src / main / java / org / opendaylight / controller / sal / utils / ListenerDispatcher.java

diff --git a/opendaylight/adsal/sal/api/src/main/java/org/opendaylight/controller/sal/utils/ListenerDispatcher.java b/opendaylight/adsal/sal/api/src/main/java/org/opendaylight/controller/sal/utils/ListenerDispatcher.java
deleted file mode 100644 (file)
index 2a4ea3d..0000000
--- a/opendaylight/adsal/sal/api/src/main/java/org/opendaylight/controller/sal/utils/ListenerDispatcher.java
+++ /dev/null
@@ -1,147 +0,0 @@
-/*
- * Copyright (c) 2011 Big Switch Networks, Inc.
- *
- * Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/legal/epl-v10.html
- *
- * 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.
- *
- * This file incorporates work covered by the following copyright and
- * permission notice:
- *
- *    Originally created by David Erickson, Stanford University
- *
- *    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.opendaylight.controller.sal.utils;
-
-import java.util.ArrayList;
-import java.util.HashSet;
-import java.util.List;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/**
- * Maintain lists of listeners ordered by dependency.
- *
- * @author readams
- *
- */
-@Deprecated
-public class ListenerDispatcher<U, T extends IListener<U>> {
-    protected static Logger logger = LoggerFactory
-            .getLogger(ListenerDispatcher.class);
-    volatile List<T> listeners = new ArrayList<T>();
-
-    private void visit(List<T> newlisteners, U type, HashSet<T> visited,
-            List<T> ordering, T listener) {
-        if (!visited.contains(listener)) {
-            visited.add(listener);
-
-            for (T i : newlisteners) {
-                if (ispre(type, i, listener)) {
-                    visit(newlisteners, type, visited, ordering, i);
-                }
-            }
-            ordering.add(listener);
-        }
-    }
-
-    private boolean ispre(U type, T l1, T l2) {
-        return (l2.isCallbackOrderingPrereq(type, l1.getName()) || l1
-                .isCallbackOrderingPostreq(type, l2.getName()));
-    }
-
-    /**
-     * Add a listener to the list of listeners
-     *
-     * @param listener
-     */
-    public void addListener(U type, T listener) {
-        List<T> newlisteners = new ArrayList<T>();
-        if (listeners != null)
-            newlisteners.addAll(listeners);
-
-        newlisteners.add(listener);
-        // Find nodes without outgoing edges
-        List<T> terminals = new ArrayList<T>();
-        for (T i : newlisteners) {
-            boolean isterm = true;
-            for (T j : newlisteners) {
-                if (ispre(type, i, j)) {
-                    isterm = false;
-                    break;
-                }
-            }
-            if (isterm) {
-                terminals.add(i);
-            }
-        }
-
-        if (terminals.size() == 0) {
-            logger.error("No listener dependency solution: "
-                    + "No listeners without incoming dependencies");
-            listeners = newlisteners;
-            return;
-        }
-
-        // visit depth-first traversing in the opposite order from
-        // the dependencies. Note we will not generally detect cycles
-        HashSet<T> visited = new HashSet<T>();
-        List<T> ordering = new ArrayList<T>();
-        for (T term : terminals) {
-            visit(newlisteners, type, visited, ordering, term);
-        }
-        listeners = ordering;
-    }
-
-    /**
-     * Remove the given listener
-     *
-     * @param listener
-     *            the listener to remove
-     */
-    public void removeListener(T listener) {
-        if (listeners != null) {
-            List<T> newlisteners = new ArrayList<T>();
-            newlisteners.addAll(listeners);
-            newlisteners.remove(listener);
-            listeners = newlisteners;
-        }
-    }
-
-    /**
-     * Clear all listeners
-     */
-    public void clearListeners() {
-        listeners = new ArrayList<T>();
-    }
-
-    /**
-     * Get the ordered list of listeners ordered by dependencies
-     *
-     * @return
-     */
-    public List<T> getOrderedListeners() {
-        return listeners;
-    }
-}