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https://issues.apache.org/jira/browse/APEXMALHAR-2006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15287913#comment-15287913
]
ASF GitHub Bot commented on APEXMALHAR-2006:
--------------------------------------------
Github user davidyan74 commented on a diff in the pull request:
https://github.com/apache/incubator-apex-malhar/pull/261#discussion_r63624253
--- Diff:
stream/src/test/java/org/apache/apex/malhar/stream/sample/MyStreamTest.java ---
@@ -0,0 +1,90 @@
+/**
+ * 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.apex.malhar.stream.sample;
+
+import java.util.Arrays;
+
+import org.junit.Test;
+
+import org.apache.apex.malhar.stream.api.function.Function;
+import org.apache.apex.malhar.stream.api.impl.StreamFactory;
+
+/**
+ * A test class which test your own stream implementation build on default
one
+ */
+public class MyStreamTest
+{
+ @Test
+ public void testMethodChainWordcount() throws Exception
+ {
+ new MyStream<>(StreamFactory.fromFolder("./src/test/resources/data"))
+ .<String, MyStream<String>>flatMap(new
Function.FlatMapFunction<String, String>()
+ {
+ @Override
+ public Iterable<String> f(String input)
+ {
+ return Arrays.asList(input.split(" "));
+ }
+ }).filterAndMap(new Function.MapFunction<String, String>()
+ {
+ @Override
+ public String f(String input)
+ {
+ return input.replace("word", "newword");
+ }
+ }, new Function.FilterFunction<String>()
+ {
+ @Override
+ public Boolean f(String input)
+ {
+ return input.startsWith("word");
+ }
+ }).countByKey().print().runEmbedded(5000);
+ }
+
+ @Test
+ public void testNoneMethodChainWordcount() throws Exception
--- End diff --
None -> Non
> Stream API Design
> -----------------
>
> Key: APEXMALHAR-2006
> URL: https://issues.apache.org/jira/browse/APEXMALHAR-2006
> Project: Apache Apex Malhar
> Issue Type: Sub-task
> Reporter: Siyuan Hua
> Assignee: Siyuan Hua
> Fix For: 3.4.0
>
>
> Construct DAG in a similar way as Flink/Spark Streaming
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