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https://issues.apache.org/jira/browse/RYA-280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16090411#comment-16090411
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ASF GitHub Bot commented on RYA-280:
------------------------------------
Github user isper3at commented on a diff in the pull request:
https://github.com/apache/incubator-rya/pull/177#discussion_r127798539
--- 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);
--- End diff --
here
> PeriodicQuery Support for Fluo
> ------------------------------
>
> Key: RYA-280
> URL: https://issues.apache.org/jira/browse/RYA-280
> Project: Rya
> Issue Type: New Feature
> Components: clients
> Affects Versions: 3.2.10
> Reporter: Caleb Meier
> Assignee: Caleb Meier
>
> Add the capability to Rya-Fluo App to provide periodic updates for queries
> registered with Fluo. That is, provide the application with the ability to
> satisfy the standing query "tell me every 12 hours about all of the events of
> a particular type that occurred within the last 24 hours". Given that Fluo
> operates using a push based notification system, some external service needs
> to be implemented to periodically notify Fluo to generate a result
> notification (this helps handle the non-event event that occurs when nothing
> happens in a given period of time).
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