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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <p style="margin: 10px 0 0; margin-top: 0">I just did something like this based on the MetadataBuilderInitializer. Probably it helps <img class="emoticon" src="cid:jira-generated-image-static-smile-39919451-328e-474c-b457-fdbee8ee9c41" height="16" width="16" align="absmiddle" alt="" border="0"> (Just ignore the Spring stuff)</p> <p style="margin: 10px 0 0">It would be nice to get access to the SQLFunctionRegistry via the ServiceLocator.</p>
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<pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">interface</span> HibernateSqlFunctionRegistrar {
<span class="code-keyword" style="color: #000091">default</span> void registerFunction(Map<<span class="code-object" style="color: #910091">String</span>, SQLFunction> sqlFunctions, <span class="code-object" style="color: #910091">String</span> name, SQLFunction function) {
<span class="code-comment" style="color: #808080">// HHH-7721: SQLFunctionRegistry expects all lowercase. Enforce,
</span> <span class="code-comment" style="color: #808080">// just in <span class="code-keyword" style="color: #000091; color: #808080">case</span> a user's customer dialect uses mixed cases.
</span> sqlFunctions.put(name.toLowerCase(Locale.ROOT), function);
}
Map<<span class="code-object" style="color: #910091">String</span>, SQLFunction> getSqlFunctions(Dialect dialect);
}
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<pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">class </span>HibernateSpringIntegrator
<span class="code-keyword" style="color: #000091">implements</span> MetadataBuilderInitializer, ApplicationContextAware {
<span class="code-keyword" style="color: #000091">private</span> <span class="code-keyword" style="color: #000091">static</span> ApplicationContext applicationContext;
<span class="code-comment" style="color: #808080">/** The Constant log. */</span>
<span class="code-keyword" style="color: #000091">private</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-keyword" style="color: #000091">final</span> Logger log = LoggerFactory.getLogger(HibernateSpringIntegrator.class);
@Override
<span class="code-keyword" style="color: #000091">public</span> void contribute(<span class="code-keyword" style="color: #000091">final</span> MetadataBuilder metadataBuilder, <span class="code-keyword" style="color: #000091">final</span> StandardServiceRegistry serviceRegistry) {
log.info(<span class="code-quote" style="color: #009100">"Registering custom SQL functions"</span>); <span class="code-comment" style="color: #808080">//$NON-NLS-1$
</span> <span class="code-keyword" style="color: #000091">try</span> {
Map<<span class="code-object" style="color: #910091">String</span>, HibernateSqlFunctionRegistrar> registars =
HibernateSpringIntegrator.applicationContext.getBeansOfType(HibernateSqlFunctionRegistrar.class);
<span class="code-object" style="color: #910091">String</span> dialectClassname =
HibernateSpringIntegrator.applicationContext.getBean(<span class="code-quote" style="color: #009100">"jpaProperties"</span>, Properties.class)
.getProperty(<span class="code-quote" style="color: #009100">"hibernate.dialect"</span>);
Dialect dialect = (Dialect) <span class="code-object" style="color: #910091">Class</span>.forName(dialectClassname).newInstance();
registars.forEach((beanname, registrar) -> {
<span class="code-object" style="color: #910091">Class</span><?> listenerClass = AopUtils.getTargetClass(registrar);
log.debug(<span class="code-quote" style="color: #009100">"Registering: {}"</span>, listenerClass); <span class="code-comment" style="color: #808080">//$NON-NLS-1$
</span> registrar.getSqlFunctions(dialect).forEach((name, sqlFunction) -> {
metadataBuilder.applySqlFunction(name, sqlFunction);
});
});
} <span class="code-keyword" style="color: #000091">catch</span> (RuntimeException e) {
<span class="code-keyword" style="color: #000091">throw</span> e;
} <span class="code-keyword" style="color: #000091">catch</span> (Exception e) {
<span class="code-keyword" style="color: #000091">throw</span> <span class="code-keyword" style="color: #000091">new</span> RuntimeException(e);
}
}
}
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<pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">class </span>GCOSqlFunctionRegistrar <span class="code-keyword" style="color: #000091">implements</span> HibernateSqlFunctionRegistrar {
@Override
<span class="code-keyword" style="color: #000091">public</span> Map<<span class="code-object" style="color: #910091">String</span>, SQLFunction> getSqlFunctions(Dialect dialect) {
Map<<span class="code-object" style="color: #910091">String</span>, SQLFunction> sqlFunctions = <span class="code-keyword" style="color: #000091">new</span> HashMap<>();
<span class="code-keyword" style="color: #000091">if</span> (dialect <span class="code-keyword" style="color: #000091">instanceof</span> HSQLDialect) {
registerFunction(sqlFunctions, <span class="code-quote" style="color: #009100">"get_action_status"</span>,
<span class="code-keyword" style="color: #000091">new</span> StandardSQLFunction(<span class="code-quote" style="color: #009100">"get_action_status"</span>, StandardBasicTypes.STRING));
} <span class="code-keyword" style="color: #000091">else</span> <span class="code-keyword" style="color: #000091">if</span> (dialect <span class="code-keyword" style="color: #000091">instanceof</span> Oracle12cDialect) {
registerFunction(sqlFunctions, <span class="code-quote" style="color: #009100">"get_action_status"</span>,
<span class="code-keyword" style="color: #000091">new</span> StandardSQLFunction(<span class="code-quote" style="color: #009100">"somepkg.get_action_status"</span>, StandardBasicTypes.STRING));
}
<span class="code-keyword" style="color: #000091">return</span> sqlFunctions;
}
}
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