[GitHub] kafka pull request #2173: KAFKA-4449: Add Serializer/Deserializer for POJO

[habren <gi...@git.apache.org>]

GitHub user habren opened a pull request:

    https://github.com/apache/kafka/pull/2173

    KAFKA-4449: Add Serializer/Deserializer for POJO

    Currently, there are only build-in serializer/deserializer for basic data type (String, Long, etc). It's better to have serializer/deserializer for POJO.
    
    If we had this, user can serialize/deserialize all of their POJO with it. Otherwise, user may need to create e pair of serializer and deserializer for each kind of POJO, just like the implementation in the stream example PageViewTypeDemo
    https://github.com/apache/kafka/blob/trunk/streams/examples/src/main/java/org/apache/kafka/streams/examples/pageview/PageViewTypedDemo.java
    
    Let's take above streams-example as an example, Serde was created for PageView as below
    
    
            final Serializer<PageView> pageViewSerializer = new JsonPOJOSerializer<>();
            serdeProps.put("JsonPOJOClass", PageView.class);
            pageViewSerializer.configure(serdeProps, false);
    
            final Deserializer<PageView> pageViewDeserializer = new JsonPOJODeserializer<>();
            serdeProps.put("JsonPOJOClass", PageView.class);
            pageViewDeserializer.configure(serdeProps, false);
    
            final Serde<PageView> pageViewSerde = Serdes.serdeFrom(pageViewSerializer, pageViewDeserializer);
    
    
    If we use this POJO serializer/deserializer, the Serde can be created with only one line
        
        Serdes.serdeFrom(RegionCount.class)
        


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/habren/kafka serdes

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/kafka/pull/2173.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #2173
    
----
commit 40456bd20152d4e37964278b98cb21fb19fbf461
Author: Jason Guo <ha...@163.com>
Date:   2016-11-26T09:17:01Z

    KAFKA-4449: Add Serializer/Deserializer for POJO

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