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    <p>If Play uses Hibernate, as the other answers suggest, you will have to <a href="http://docs.jboss.org/hibernate/core/3.6/reference/en-US/html_single/#configuration-namingstrategy" rel="noreferrer">implement a custom <code>NamingStrategy</code></a>.</p> <p>Here's a sample NamingStrategy that converts all column names from lower camel to lower case with underscores, using <a href="http://guava-libraries.googlecode.com" rel="noreferrer">Guava</a>:</p> <pre><code>public class CustomNamingStrategy extends ImprovedNamingStrategy { private static final long serialVersionUID = -306957679456120781L; @Override public String columnName(final String columnName) { return CaseFormat.LOWER_CAMEL .to(CaseFormat.LOWER_UNDERSCORE, columnName); } } </code></pre> <p>Configure it like this:</p> <blockquote> <p>add the following line to application.conf to configure the NamingStrategy </p> <p><code>hibernate.ejb.naming_strategy=&lt;your naming strategy classname&gt;</code></p> </blockquote> <p><strong>Reference:</strong></p> <ul> <li><a href="http://docs.jboss.org/hibernate/core/3.6/reference/en-US/html_single/#configuration-namingstrategy" rel="noreferrer">Implementing a custom <code>NamingStrategy</code> (Hibernate Reference)</a></li> <li><a href="http://docs.jboss.org/hibernate/core/3.6/javadocs/index.html?org/hibernate/cfg/NamingStrategy.html" rel="noreferrer"><code>NamingStrategy</code> (Hibernate JavaDocs)</a></li> <li><a href="http://groups.google.com/group/play-framework/browse_thread/thread/bee380c98b173199" rel="noreferrer">How to set up a different Naming Strategy (Play-Framework Google Group)</a></li> <li><a href="http://guava-libraries.googlecode.com/svn/trunk/javadoc/index.html?com/google/common/base/CaseFormat.html" rel="noreferrer"><code>CaseFormat</code> (Guava JavaDoc)</a></li> </ul>
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    1. POIs there any way to get Play framework and JPA to use underscores in column names?
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    1. USSean Patrick Floyd
    1. USSean Patrick Floyd
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    1. POIs there any way to get Play framework and JPA to use underscores in column names?
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      1. VTUpMod
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    1. COAFAIK ImprovedNamingStrategy does just that. Converts to lowercase+underscore. So, you just have to set it to ImprovedNamingStrategy. +1 for a good answer anyway ;)
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    2. CO@Bogdan a) thanks! b) true, didn't check that. But quite frankly: the Guava way looks more effective than the Hibernate way, so this may actually be an improvement nevertheless :-)
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    3. COThat works great! Thanks!
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