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From gauravgopi123 <...@git.apache.org>
Subject [GitHub] incubator-apex-core pull request: APEXCORE-60 Iteration support in...
Date Wed, 16 Dec 2015 14:21:18 GMT
Github user gauravgopi123 commented on a diff in the pull request:

    https://github.com/apache/incubator-apex-core/pull/185#discussion_r47780330
  
    --- Diff: api/src/main/java/com/datatorrent/api/Context.java ---
    @@ -161,6 +161,13 @@
          */
         Attribute<Class<?>> TUPLE_CLASS = new Attribute<>(new Class2String<>());
     
    +    /**
    +     * Attribute of input port.
    +     * This is a read-only attribute to query whether the input port is connected to
a DelayOperator
    +     * This is for iterative processing.
    +     */
    +    Attribute<Boolean> IS_CONNECTED_TO_DELAY_OPERATOR = new Attribute<>(false);
    --- End diff --
    
    @davidyan74 : There are some internal Attributes defined in LogicalPlan. I think we should
do the same for this as well. Define it as an internal attribute and use that. Only thing
is that you now will have to first check if portContext.getValue() returns null or not


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