Started refactoring Intent Manager
Introduced IntentData and reworked APIs
Change-Id: I1fa437ceb1b72c4017ac2da1573bfbeb64c0632a
diff --git a/utils/misc/src/main/java/org/onlab/util/Accumulator.java b/utils/misc/src/main/java/org/onlab/util/Accumulator.java
new file mode 100644
index 0000000..dd251ec
--- /dev/null
+++ b/utils/misc/src/main/java/org/onlab/util/Accumulator.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2015 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.util;
+
+import java.util.List;
+
+/**
+ * Abstraction of an accumulator capable of collecting events and at some
+ * point in time triggers processing of all previously accumulated events.
+ */
+public interface Accumulator<T> {
+
+ /**
+ * Adds an event to the current batch. This operation may, or may not
+ * trigger processing of the current batch of events.
+ *
+ * @param event event to be added to the current batch
+ */
+ void add(T event);
+
+ /**
+ * Processes the specified list of accumulated events.
+ *
+ * @param events list of accumulated events
+ */
+ void processEvents(List<T> events);
+
+}