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<div class="subTitle">org.apache.storm.state</div>
<h2 title="Class DefaultStateEncoder" class="title">Class DefaultStateEncoder&lt;K,V&gt;</h2>
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<li>org.apache.storm.state.DefaultStateEncoder&lt;K,V&gt;</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../../org/apache/storm/state/StateEncoder.html" title="interface in org.apache.storm.state">StateEncoder</a>&lt;K,V,byte[],byte[]&gt;</dd>
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<pre>public class <span class="typeNameLabel">DefaultStateEncoder&lt;K,V&gt;</span>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>
implements <a href="../../../../org/apache/storm/state/StateEncoder.html" title="interface in org.apache.storm.state">StateEncoder</a>&lt;K,V,byte[],byte[]&gt;</pre>
<div class="block"><p>Default state encoder class for encoding/decoding key values. This class assumes encoded types of key and value are both binary (byte array) due to keep backward compatibility.</p></div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/apache/storm/state/Serializer.html" title="interface in org.apache.storm.state">Serializer</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true" title="class or interface in java.util">Optional</a>&lt;byte[]&gt;&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/state/DefaultStateEncoder.html#INTERNAL_VALUE_SERIALIZER">INTERNAL_VALUE_SERIALIZER</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>static byte[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/state/DefaultStateEncoder.html#TOMBSTONE">TOMBSTONE</a></span></code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/state/DefaultStateEncoder.html#DefaultStateEncoder-org.apache.storm.state.Serializer-org.apache.storm.state.Serializer-">DefaultStateEncoder</a></span>(<a href="../../../../org/apache/storm/state/Serializer.html" title="interface in org.apache.storm.state">Serializer</a>&lt;<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">K</a>&gt;&nbsp;keySerializer,
<a href="../../../../org/apache/storm/state/Serializer.html" title="interface in org.apache.storm.state">Serializer</a>&lt;<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">V</a>&gt;&nbsp;valueSerializer)</code>&nbsp;</td>
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<td class="colFirst"><code><a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">K</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/state/DefaultStateEncoder.html#decodeKey-byte:A-">decodeKey</a></span>(byte[]&nbsp;encodedKey)</code>
<div class="block">Decode key.</div>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">V</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/state/DefaultStateEncoder.html#decodeValue-byte:A-">decodeValue</a></span>(byte[]&nbsp;encodedValue)</code>
<div class="block">Decode value.</div>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>byte[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/state/DefaultStateEncoder.html#encodeKey-K-">encodeKey</a></span>(<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">K</a>&nbsp;key)</code>
<div class="block">Encode key.</div>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>byte[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/state/DefaultStateEncoder.html#encodeValue-V-">encodeValue</a></span>(<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">V</a>&nbsp;value)</code>
<div class="block">Encode value.</div>
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<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/storm/state/Serializer.html" title="interface in org.apache.storm.state">Serializer</a>&lt;<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">K</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/state/DefaultStateEncoder.html#getKeySerializer--">getKeySerializer</a></span>()</code>&nbsp;</td>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code>byte[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/state/DefaultStateEncoder.html#getTombstoneValue--">getTombstoneValue</a></span>()</code>
<div class="block">Get the tombstone value (deletion mark).</div>
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<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/storm/state/Serializer.html" title="interface in org.apache.storm.state">Serializer</a>&lt;<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">V</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/state/DefaultStateEncoder.html#getValueSerializer--">getValueSerializer</a></span>()</code>&nbsp;</td>
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<h3>Field Detail</h3>
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<h4>INTERNAL_VALUE_SERIALIZER</h4>
<pre>public static final&nbsp;<a href="../../../../org/apache/storm/state/Serializer.html" title="interface in org.apache.storm.state">Serializer</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true" title="class or interface in java.util">Optional</a>&lt;byte[]&gt;&gt; INTERNAL_VALUE_SERIALIZER</pre>
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<pre>public static final&nbsp;byte[] TOMBSTONE</pre>
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<h3>Constructor Detail</h3>
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<h4>DefaultStateEncoder</h4>
<pre>public&nbsp;DefaultStateEncoder(<a href="../../../../org/apache/storm/state/Serializer.html" title="interface in org.apache.storm.state">Serializer</a>&lt;<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">K</a>&gt;&nbsp;keySerializer,
<a href="../../../../org/apache/storm/state/Serializer.html" title="interface in org.apache.storm.state">Serializer</a>&lt;<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">V</a>&gt;&nbsp;valueSerializer)</pre>
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<h3>Method Detail</h3>
<a name="getKeySerializer--">
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<h4>getKeySerializer</h4>
<pre>public&nbsp;<a href="../../../../org/apache/storm/state/Serializer.html" title="interface in org.apache.storm.state">Serializer</a>&lt;<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">K</a>&gt;&nbsp;getKeySerializer()</pre>
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<h4>getValueSerializer</h4>
<pre>public&nbsp;<a href="../../../../org/apache/storm/state/Serializer.html" title="interface in org.apache.storm.state">Serializer</a>&lt;<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">V</a>&gt;&nbsp;getValueSerializer()</pre>
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<a name="encodeKey-java.lang.Object-">
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<h4>encodeKey</h4>
<pre>public&nbsp;byte[]&nbsp;encodeKey(<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">K</a>&nbsp;key)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../org/apache/storm/state/StateEncoder.html#encodeKey-K-">StateEncoder</a></code></span></div>
<div class="block"><p>Encode key.</p></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/storm/state/StateEncoder.html#encodeKey-K-">encodeKey</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/storm/state/StateEncoder.html" title="interface in org.apache.storm.state">StateEncoder</a>&lt;<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">K</a>,<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">V</a>,byte[],byte[]&gt;</code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>key</code> - the value of key (K type)</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the encoded value of key (KENCODEDT type)</dd>
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<h4>encodeValue</h4>
<pre>public&nbsp;byte[]&nbsp;encodeValue(<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">V</a>&nbsp;value)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../org/apache/storm/state/StateEncoder.html#encodeValue-V-">StateEncoder</a></code></span></div>
<div class="block"><p>Encode value.</p></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/storm/state/StateEncoder.html#encodeValue-V-">encodeValue</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/storm/state/StateEncoder.html" title="interface in org.apache.storm.state">StateEncoder</a>&lt;<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">K</a>,<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">V</a>,byte[],byte[]&gt;</code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>value</code> - the value of value (V type)</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the encoded value of value (VENCODEDT type)</dd>
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<h4>decodeKey</h4>
<pre>public&nbsp;<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">K</a>&nbsp;decodeKey(byte[]&nbsp;encodedKey)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../org/apache/storm/state/StateEncoder.html#decodeKey-KENCODEDT-">StateEncoder</a></code></span></div>
<div class="block"><p>Decode key.</p></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/storm/state/StateEncoder.html#decodeKey-KENCODEDT-">decodeKey</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/storm/state/StateEncoder.html" title="interface in org.apache.storm.state">StateEncoder</a>&lt;<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">K</a>,<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">V</a>,byte[],byte[]&gt;</code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>encodedKey</code> - the value of key (KRAW type)</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the decoded value of key (K type)</dd>
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<h4>decodeValue</h4>
<pre>public&nbsp;<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">V</a>&nbsp;decodeValue(byte[]&nbsp;encodedValue)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../org/apache/storm/state/StateEncoder.html#decodeValue-VENCODEDT-">StateEncoder</a></code></span></div>
<div class="block"><p>Decode value.</p></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/storm/state/StateEncoder.html#decodeValue-VENCODEDT-">decodeValue</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/storm/state/StateEncoder.html" title="interface in org.apache.storm.state">StateEncoder</a>&lt;<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">K</a>,<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">V</a>,byte[],byte[]&gt;</code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>encodedValue</code> - the value of key (VENCODEDT type)</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the decoded value of key (V type)</dd>
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<h4>getTombstoneValue</h4>
<pre>public&nbsp;byte[]&nbsp;getTombstoneValue()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../org/apache/storm/state/StateEncoder.html#getTombstoneValue--">StateEncoder</a></code></span></div>
<div class="block"><p>Get the tombstone value (deletion mark).</p></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/storm/state/StateEncoder.html#getTombstoneValue--">getTombstoneValue</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/storm/state/StateEncoder.html" title="interface in org.apache.storm.state">StateEncoder</a>&lt;<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">K</a>,<a href="../../../../org/apache/storm/state/DefaultStateEncoder.html" title="type parameter in DefaultStateEncoder">V</a>,byte[],byte[]&gt;</code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the tomestone value (VENCODEDT type)</dd>
</dl>
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