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<h2 title="Annotation Type SQLUserDefinedType" class="title">Annotation Type SQLUserDefinedType</h2>
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<pre>@Retention(value=RUNTIME)
@Target(value=TYPE)
public @interface <span class="strong">SQLUserDefinedType</span></pre>
<div class="block">::DeveloperApi::
A user-defined type which can be automatically recognized by a SQLContext and registered.
<p>
WARNING: This annotation will only work if both Java and Scala reflection return the same class
names (after erasure) for the UDT. This will NOT be the case when, e.g., the UDT class
is enclosed in an object (a singleton).
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WARNING: UDTs are currently only supported from Scala.</div>
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<td class="colFirst"><code>java.lang.Class<? extends <a href="../../../../../org/apache/spark/sql/types/UserDefinedType.html" title="class in org.apache.spark.sql.types">UserDefinedType</a><?>></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/types/SQLUserDefinedType.html#udt()">udt</a></strong></code>
<div class="block">Returns an instance of the UserDefinedType which can serialize and deserialize the user
class to and from Catalyst built-in types.</div>
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<pre>public abstract java.lang.Class<? extends <a href="../../../../../org/apache/spark/sql/types/UserDefinedType.html" title="class in org.apache.spark.sql.types">UserDefinedType</a><?>> udt</pre>
<div class="block">Returns an instance of the UserDefinedType which can serialize and deserialize the user
class to and from Catalyst built-in types.</div>
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