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From aljos...@apache.org
Subject [06/12] flink git commit: Add Count and Delta WindowPolicy
Date Mon, 28 Sep 2015 16:15:02 GMT
Add Count and Delta  WindowPolicy


Project: http://git-wip-us.apache.org/repos/asf/flink/repo
Commit: http://git-wip-us.apache.org/repos/asf/flink/commit/bfaad37c
Tree: http://git-wip-us.apache.org/repos/asf/flink/tree/bfaad37c
Diff: http://git-wip-us.apache.org/repos/asf/flink/diff/bfaad37c

Branch: refs/heads/master
Commit: bfaad37c0aa8ac43a282a8c9cb2e0d64fdf22f72
Parents: 86c45bf
Author: Aljoscha Krettek <aljoscha.krettek@gmail.com>
Authored: Thu Sep 24 17:42:15 2015 +0200
Committer: Aljoscha Krettek <aljoscha.krettek@gmail.com>
Committed: Mon Sep 28 17:04:16 2015 +0200

----------------------------------------------------------------------
 .../api/windowing/windowpolicy/Count.java       | 58 +++++++++++++++++
 .../api/windowing/windowpolicy/Delta.java       | 68 ++++++++++++++++++++
 2 files changed, 126 insertions(+)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/flink/blob/bfaad37c/flink-staging/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/windowing/windowpolicy/Count.java
----------------------------------------------------------------------
diff --git a/flink-staging/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/windowing/windowpolicy/Count.java
b/flink-staging/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/windowing/windowpolicy/Count.java
new file mode 100644
index 0000000..5fb7d58
--- /dev/null
+++ b/flink-staging/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/windowing/windowpolicy/Count.java
@@ -0,0 +1,58 @@
+/*
+ * 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.windowpolicy;
+
+
+/**
+ * A windowing policy that generates windows based on element counts.
+ */
+public final class Count extends WindowPolicy {
+
+	private static final long serialVersionUID = 3197290738634320211L;
+
+	private long size;
+
+	/** Instantiation only via factory method */
+	private Count(long size) {
+		this.size = size;
+	}
+
+	public long getSize() {
+		return size;
+	}
+
+	@Override
+	public String toString() {
+		return "Count Window (" + size + ')';
+	}
+
+	// ------------------------------------------------------------------------
+	//  Factory
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Creates a count based windowing policy
+	 *
+	 * @param size The size of the generated windows.
+	 * @return The time policy.
+	 */
+	public static Count of(long size) {
+		return new Count(size);
+	}
+}

http://git-wip-us.apache.org/repos/asf/flink/blob/bfaad37c/flink-staging/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/windowing/windowpolicy/Delta.java
----------------------------------------------------------------------
diff --git a/flink-staging/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/windowing/windowpolicy/Delta.java
b/flink-staging/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/windowing/windowpolicy/Delta.java
new file mode 100644
index 0000000..4a3082c
--- /dev/null
+++ b/flink-staging/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/windowing/windowpolicy/Delta.java
@@ -0,0 +1,68 @@
+/*
+ * 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.windowpolicy;
+
+
+import org.apache.flink.streaming.api.functions.windowing.delta.DeltaFunction;
+
+/**
+ * A windowing policy that generates windows based on a delta between elements.
+ */
+public final class Delta<T> extends WindowPolicy {
+
+	private static final long serialVersionUID = 3197290738634320211L;
+
+	private DeltaFunction<T> deltaFunction;
+
+	private double threshold;
+
+	/** Instantiation only via factory method */
+	private Delta(DeltaFunction<T> deltaFunction, double threshold) {
+		this.deltaFunction = deltaFunction;
+		this.threshold = threshold;
+	}
+
+	public DeltaFunction<T> getDeltaFunction() {
+		return deltaFunction;
+	}
+
+	public double getThreshold() {
+		return threshold;
+	}
+
+	@Override
+	public String toString() {
+		return "Delta Window (" + deltaFunction + ", " + threshold + ')';
+	}
+
+	// ------------------------------------------------------------------------
+	//  Factory
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Creates a delta based windowing policy
+	 *
+	 * @param threshold The threshold for deltas at which to trigger windows
+	 * @param deltaFunction The delta function
+	 * @return The time policy.
+	 */
+	public static <T> Delta<T> of(double threshold, DeltaFunction<T> deltaFunction)
{
+		return new Delta<T>(deltaFunction, threshold);
+	}
+}


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