Github user meiercaleb commented on a diff in the pull request:
https://github.com/apache/incubator-rya/pull/177#discussion_r128042579
--- Diff:
extras/rya.periodic.service/periodic.service.notification/src/main/java/org/apache/rya/periodic/notification/notification/PeriodicNotification.java
---
@@ -0,0 +1,185 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.apache.rya.periodic.notification.notification;
+
+import java.util.Objects;
+import java.util.concurrent.TimeUnit;
+
+import org.apache.rya.periodic.notification.api.Notification;
+
+import com.google.common.base.Preconditions;
+
+/**
+ * Notification Object used by the Periodic Query Service to inform
workers to
+ * process results for a given Periodic Query with the indicated id.
+ * Additionally, this Object contains a period that indicates a frequency
at
+ * which regular updates are generated.
+ *
+ */
+public class PeriodicNotification implements Notification {
+
+ private String id;
+ private long period;
+ private TimeUnit periodTimeUnit;
+ private long initialDelay;
+
+ /**
+ * Creates a PeriodicNotification.
+ * @param id - Fluo Query Id that this notification is associated with
+ * @param period - period at which notifications are generated
+ * @param periodTimeUnit - time unit associated with the period and
delay
+ * @param initialDelay - amount of time to wait before generating the
first notification
+ */
+ public PeriodicNotification(String id, long period, TimeUnit
periodTimeUnit, long initialDelay) {
+ Preconditions.checkNotNull(id);
+ Preconditions.checkNotNull(periodTimeUnit);
+ Preconditions.checkArgument(period > 0 && initialDelay >= 0);
+ this.id = id;
+ this.period = period;
+ this.periodTimeUnit = periodTimeUnit;
+ this.initialDelay = initialDelay;
+ }
+
+
+ /**
+ * Create a PeriodicNotification
+ * @param other - other PeriodicNotification used in copy constructor
+ */
+ public PeriodicNotification(PeriodicNotification other) {
+ this(other.id, other.period, other.periodTimeUnit,
other.initialDelay);
+ }
+
+ public String getId() {
+ return id;
+ }
+
+ /**
+ * @return - period at which regular notifications are generated
+ */
+ public long getPeriod() {
+ return period;
+ }
+
+ /**
+ * @return time unit of period and initial delay
+ */
+ public TimeUnit getTimeUnit() {
+ return periodTimeUnit;
+ }
+
+ /**
+ * @return amount of time to delay before beginning to generate
notifications
+ */
+ public long getInitialDelay() {
+ return initialDelay;
+ }
+
+ @Override
+ public String toString() {
+ StringBuilder builder = new StringBuilder();
+ String delim = "=";
+ String delim2 = ";";
+ return
builder.append("id").append(delim).append(id).append(delim2).append("period").append(delim).append(period).append(delim2)
+
.append("periodTimeUnit").append(delim).append(periodTimeUnit).append(delim2).append("initialDelay").append(delim)
+ .append(initialDelay).toString();
+ }
+
+ @Override
+ public boolean equals(Object other) {
+ if (this == other) {
+ return true;
+ }
+
+ if (!(other instanceof PeriodicNotification)) {
+ return false;
+ }
+
+ PeriodicNotification notification = (PeriodicNotification) other;
+ return Objects.equals(this.id, notification.id) && (this.period ==
notification.period)
+ && Objects.equals(this.periodTimeUnit,
notification.periodTimeUnit) && (this.initialDelay ==
notification.initialDelay);
+ }
+
+ @Override
+ public int hashCode() {
+ int result = 17;
--- End diff --
done
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