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https://issues.apache.org/jira/browse/APEXMALHAR-2006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15290371#comment-15290371
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ASF GitHub Bot commented on APEXMALHAR-2006:
--------------------------------------------
Github user tweise commented on a diff in the pull request:
https://github.com/apache/incubator-apex-malhar/pull/261#discussion_r63816702
--- Diff:
stream/src/main/java/org/apache/apex/malhar/stream/api/impl/ApexStreamImpl.java
---
@@ -0,0 +1,493 @@
+/**
+ * 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.api.impl;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Modifier;
+import java.util.HashSet;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.Callable;
+
+import org.apache.apex.malhar.stream.api.ApexStream;
+import org.apache.apex.malhar.stream.api.function.Function;
+import org.apache.apex.malhar.stream.api.operator.FunctionOperator;
+import org.apache.commons.beanutils.BeanUtils;
+import org.apache.commons.lang3.tuple.Pair;
+
+import com.datatorrent.api.Attribute;
+import com.datatorrent.api.Context;
+import com.datatorrent.api.DAG;
+import com.datatorrent.api.LocalMode;
+import com.datatorrent.api.Operator;
+import com.datatorrent.lib.algo.UniqueCounter;
+import com.datatorrent.lib.io.ConsoleOutputOperator;
+import com.datatorrent.stram.StramLocalCluster;
--- End diff --
Why rely on engine internals?
> 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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