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MINOR: update docs JSON serde links (#6465) 

Reviewers: Joel Mamill <joel@confluent.io>, Matthias J. Sax <mjsax@apache.org>
pull/6482/head
Victoria Bialas 6 years ago committed by Bill Bejeck
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  1. 23
      docs/streams/developer-guide/datatypes.html

23
docs/streams/developer-guide/datatypes.html
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@ -112,7 +112,7 @@
<span class="nt">&lt;/dependency&gt;</span> <span class="nt">&lt;/dependency&gt;</span>
</pre></div> </pre></div>
</div> </div>
<p>This artifact provides the following serde implementations under the package <a class="reference external" href="https://github.com/apache/kafka/blob/1.0/clients/src/main/java/org/apache/kafka/common/serialization">org.apache.kafka.common.serialization</a>, which you can leverage when e.g., defining default serializers in your Streams configuration.</p> <p>This artifact provides the following serde implementations under the package <a class="reference external" href="https://github.com/apache/kafka/blob/{{dotVersion}}/clients/src/main/java/org/apache/kafka/common/serialization">org.apache.kafka.common.serialization</a>, which you can leverage when e.g., defining default serializers in your Streams configuration.</p>
<table border="1" class="docutils"> <table border="1" class="docutils">
<colgroup> <colgroup>
<col width="17%" /> <col width="17%" />
@ -149,20 +149,17 @@
</table> </table>
<div class="admonition tip"> <div class="admonition tip">
<p><b>Tip</b></p> <p><b>Tip</b></p>
<p class="last"><a class="reference external" href="https://github.com/apache/kafka/blob/1.0/clients/src/main/java/org/apache/kafka/common/utils/Bytes.java">Bytes</a> is a wrapper for Java&#8217;s <code class="docutils literal"><span class="pre">byte[]</span></code> (byte array) that supports proper equality and ordering semantics. You may want to consider using <code class="docutils literal"><span class="pre">Bytes</span></code> instead of <code class="docutils literal"><span class="pre">byte[]</span></code> in your applications.</p> <p class="last"><a class="reference external" href="https://github.com/apache/kafka/blob/{{dotVersion}}/clients/src/main/java/org/apache/kafka/common/utils/Bytes.java">Bytes</a> is a wrapper for Java&#8217;s <code class="docutils literal"><span class="pre">byte[]</span></code> (byte array) that supports proper equality and ordering semantics. You may want to consider using <code class="docutils literal"><span class="pre">Bytes</span></code> instead of <code class="docutils literal"><span class="pre">byte[]</span></code> in your applications.</p>
</div> </div>
</div> </div>
<div class="section" id="json"> <div class="section" id="json">
<h3>JSON<a class="headerlink" href="#json" title="Permalink to this headline"></a></h3> <h3>JSON<a class="headerlink" href="#json" title="Permalink to this headline"></a></h3>
<p>The code examples of Kafka Streams also include a basic serde implementation for JSON:</p> <p>The Kafka Streams code examples also include a basic serde implementation for JSON:</p>
<ul class="simple"> <ul class="simple">
<li><a class="reference external" href="https://github.com/apache/kafka/blob/1.0/streams/examples/src/main/java/org/apache/kafka/streams/examples/pageview/JsonPOJOSerializer.java">JsonPOJOSerializer</a></li> <li><a class="reference external" href="https://github.com/apache/kafka/blob/{{dotVersion}}/streams/examples/src/main/java/org/apache/kafka/streams/examples/pageview/PageViewTypedDemo.java#L83">PageViewTypedDemo</a></li>
<li><a class="reference external" href="https://github.com/apache/kafka/blob/1.0/streams/examples/src/main/java/org/apache/kafka/streams/examples/pageview/JsonPOJODeserializer.java">JsonPOJODeserializer</a></li>
</ul> </ul>
<p>You can construct a unified JSON serde from the <code class="docutils literal"><span class="pre">JsonPOJOSerializer</span></code> and <code class="docutils literal"><span class="pre">JsonPOJODeserializer</span></code> via <p>As shown in the example, you can use JSONSerdes inner classes <code class="docutils literal"><span class="pre">Serdes.serdeFrom(&lt;serializerInstance&gt;, &lt;deserializerInstance&gt;)</span></code> to construct JSON compatible serializers and deserializers.
<code class="docutils literal"><span class="pre">Serdes.serdeFrom(&lt;serializerInstance&gt;,</span> <span class="pre">&lt;deserializerInstance&gt;)</span></code>. The </p>
<a class="reference external" href="https://github.com/apache/kafka/blob/1.0/streams/examples/src/main/java/org/apache/kafka/streams/examples/pageview/PageViewTypedDemo.java">PageViewTypedDemo</a>
example demonstrates how to use this JSON serde.</p>
</div> </div>
<div class="section" id="implementing-custom-serdes"> <div class="section" id="implementing-custom-serdes">
<span id="streams-developer-guide-serdes-custom"></span><h2>Implementing custom SerDes<a class="headerlink" href="#implementing-custom-serdes" title="Permalink to this headline"></a></h2> <span id="streams-developer-guide-serdes-custom"></span><h2>Implementing custom SerDes<a class="headerlink" href="#implementing-custom-serdes" title="Permalink to this headline"></a></h2>
@ -170,13 +167,13 @@
existing SerDes (see previous section). Typically, your workflow will be similar to:</p> existing SerDes (see previous section). Typically, your workflow will be similar to:</p>
<ol class="arabic simple"> <ol class="arabic simple">
<li>Write a <em>serializer</em> for your data type <code class="docutils literal"><span class="pre">T</span></code> by implementing <li>Write a <em>serializer</em> for your data type <code class="docutils literal"><span class="pre">T</span></code> by implementing
<a class="reference external" href="https://github.com/apache/kafka/blob/1.0/clients/src/main/java/org/apache/kafka/common/serialization/Serializer.java">org.apache.kafka.common.serialization.Serializer</a>.</li> <a class="reference external" href="https://github.com/apache/kafka/blob/{{dotVersion}}/clients/src/main/java/org/apache/kafka/common/serialization/Serializer.java">org.apache.kafka.common.serialization.Serializer</a>.</li>
<li>Write a <em>deserializer</em> for <code class="docutils literal"><span class="pre">T</span></code> by implementing <li>Write a <em>deserializer</em> for <code class="docutils literal"><span class="pre">T</span></code> by implementing
<a class="reference external" href="https://github.com/apache/kafka/blob/1.0/clients/src/main/java/org/apache/kafka/common/serialization/Deserializer.java">org.apache.kafka.common.serialization.Deserializer</a>.</li> <a class="reference external" href="https://github.com/apache/kafka/blob/{{dotVersion}}/clients/src/main/java/org/apache/kafka/common/serialization/Deserializer.java">org.apache.kafka.common.serialization.Deserializer</a>.</li>
<li>Write a <em>serde</em> for <code class="docutils literal"><span class="pre">T</span></code> by implementing <li>Write a <em>serde</em> for <code class="docutils literal"><span class="pre">T</span></code> by implementing
<a class="reference external" href="https://github.com/apache/kafka/blob/1.0/clients/src/main/java/org/apache/kafka/common/serialization/Serde.java">org.apache.kafka.common.serialization.Serde</a>, <a class="reference external" href="https://github.com/apache/kafka/blob/{{dotVersion}}/clients/src/main/java/org/apache/kafka/common/serialization/Serde.java">org.apache.kafka.common.serialization.Serde</a>,
which you either do manually (see existing SerDes in the previous section) or by leveraging helper functions in which you either do manually (see existing SerDes in the previous section) or by leveraging helper functions in
<a class="reference external" href="https://github.com/apache/kafka/blob/1.0/clients/src/main/java/org/apache/kafka/common/serialization/Serdes.java">Serdes</a> <a class="reference external" href="https://github.com/apache/kafka/blob/{{dotVersion}}/clients/src/main/java/org/apache/kafka/common/serialization/Serdes.java">Serdes</a>
such as <code class="docutils literal"><span class="pre">Serdes.serdeFrom(Serializer&lt;T&gt;, Deserializer&lt;T&gt;)</span></code>. such as <code class="docutils literal"><span class="pre">Serdes.serdeFrom(Serializer&lt;T&gt;, Deserializer&lt;T&gt;)</span></code>.
Note that you will need to implement your own class (that has no generic types) if you want to use your custom serde in the configuration provided to <code class="docutils literal"><span class="pre">KafkaStreams</span></code>. Note that you will need to implement your own class (that has no generic types) if you want to use your custom serde in the configuration provided to <code class="docutils literal"><span class="pre">KafkaStreams</span></code>.
If your serde class has generic types or you use <code class="docutils literal"><span class="pre">Serdes.serdeFrom(Serializer&lt;T&gt;, Deserializer&lt;T&gt;)</span></code>, you can pass your serde only If your serde class has generic types or you use <code class="docutils literal"><span class="pre">Serdes.serdeFrom(Serializer&lt;T&gt;, Deserializer&lt;T&gt;)</span></code>, you can pass your serde only

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