adding sender-side accumulator to ecmap
Change-Id: I63de27131c067c07b41ca311b14ef3ac85b6ae3e
diff --git a/core/store/dist/src/main/java/org/onosproject/store/ecmap/AbstractEntry.java b/core/store/dist/src/main/java/org/onosproject/store/ecmap/AbstractEntry.java
new file mode 100644
index 0000000..4a87b41
--- /dev/null
+++ b/core/store/dist/src/main/java/org/onosproject/store/ecmap/AbstractEntry.java
@@ -0,0 +1,69 @@
+/*
+ * 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.onosproject.store.ecmap;
+
+import org.onosproject.store.Timestamp;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Base class for events in an EventuallyConsistentMap.
+ */
+public abstract class AbstractEntry<K, V> implements Comparable<AbstractEntry<K, V>> {
+ private final K key;
+ private final Timestamp timestamp;
+
+ /**
+ * Creates a new put entry.
+ *
+ * @param key key of the entry
+ * @param timestamp timestamp of the put event
+ */
+ public AbstractEntry(K key, Timestamp timestamp) {
+ this.key = checkNotNull(key);
+ this.timestamp = checkNotNull(timestamp);
+ }
+
+ // Needed for serialization.
+ @SuppressWarnings("unused")
+ protected AbstractEntry() {
+ this.key = null;
+ this.timestamp = null;
+ }
+
+ /**
+ * Returns the key of the entry.
+ *
+ * @return the key
+ */
+ public K key() {
+ return key;
+ }
+
+ /**
+ * Returns the timestamp of the event.
+ *
+ * @return the timestamp
+ */
+ public Timestamp timestamp() {
+ return timestamp;
+ }
+
+ @Override
+ public int compareTo(AbstractEntry<K, V> o) {
+ return this.timestamp.compareTo(o.timestamp);
+ }
+}