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Spring CrudRepository: remove that id should be var #5087

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Spring CrudRepository: remove that id should be var #5087

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2 changes: 1 addition & 1 deletion docs/topics/jvm/jvm-spring-boot-using-crudrepository.md
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Expand Up @@ -84,7 +84,7 @@ First, you need to adjust the `Message` class for work with the `CrudRepository`
</def>
<def title="CrudRepository save() function">
<p><a href="https://docs.spring.io/spring-data/jdbc/docs/current/reference/html/#jdbc.entity-persistence">This function works</a> with an assumption that the new object doesn't have an id in the database. Hence, the id <b>should be null</b> for insertion.</p>
<p> If the id isn't <i>null</i>, <code>CrudRepository</code> assumes that the object already exists in the database and this is an <i>update</i> operation as opposed to an <i>insert</i> operation. After the insert operation, the <code>id</code> will be generated by the data store and assigned back to the <code>Message</code> instance. This is why the <code>id</code> property should be declared using the <code>var</code> keyword.</p>
<p> If the id isn't <i>null</i>, <code>CrudRepository</code> assumes that the object already exists in the database and this is an <i>update</i> operation as opposed to an <i>insert</i> operation. After the insert operation, the <code>id</code> will be generated by the data store and assigned back to the <code>Message</code> instance.</p>
<p></p>
</def>
</deflist>
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