[04/34] incubator-flink git commit: [streaming] Added interface for policy helpers. Such helpers will allow to use policy based windowing through a simpler API.

[mb...@apache.org]

[streaming] Added interface for policy helpers. Such helpers will allow to use policy based windowing through a simpler API.


Project: http://git-wip-us.apache.org/repos/asf/incubator-flink/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-flink/commit/93178aeb
Tree: http://git-wip-us.apache.org/repos/asf/incubator-flink/tree/93178aeb
Diff: http://git-wip-us.apache.org/repos/asf/incubator-flink/diff/93178aeb

Branch: refs/heads/master
Commit: 93178aebb804e2e96a4e6ae7e016247a4e2d82c7
Parents: 36f1ee8
Author: Jonas Traub (powibol) <jo...@s-traub.com>
Authored: Mon Oct 27 13:16:33 2014 +0100
Committer: mbalassi <mb...@apache.org>
Committed: Fri Dec 5 16:45:08 2014 +0100

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 .../api/windowing/helper/WindowingHelper.java   | 39 ++++++++++++++++++++
 1 file changed, 39 insertions(+)
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http://git-wip-us.apache.org/repos/asf/incubator-flink/blob/93178aeb/flink-addons/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/windowing/helper/WindowingHelper.java
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diff --git a/flink-addons/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/windowing/helper/WindowingHelper.java b/flink-addons/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/windowing/helper/WindowingHelper.java
new file mode 100644
index 0000000..9df8432
--- /dev/null
+++ b/flink-addons/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/windowing/helper/WindowingHelper.java
@@ -0,0 +1,39 @@
+/*
+ * 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.flink.streaming.api.windowing.helper;
+
+import org.apache.flink.streaming.api.windowing.policy.EvictionPolicy;
+import org.apache.flink.streaming.api.windowing.policy.TriggerPolicy;
+
+/**
+ * A helper representing a count or eviction policy. Such helper classes are
+ * used to provide a nice and well readable API.
+ * 
+ * @param <DATA>
+ *            the type of input data handled by this helper
+ * @see Count
+ * @see Time
+ * @see Delta
+ */
+public interface WindowingHelper<DATA> {
+
+	public EvictionPolicy<DATA> toEvict();
+
+	public TriggerPolicy<DATA> toTrigger();
+
+}