Merged the rel_5_3_0 branch into this Branch to pick up the MDM changes.

src/main/java/ca/uhn/fhir/jpa/starter/JpaHibernatePropertiesProvider.java

@@ -0,0 +1,31 @@
+package ca.uhn.fhir.jpa.starter;
+
+import ca.uhn.fhir.context.ConfigurationException;
+import ca.uhn.fhir.jpa.config.HibernatePropertiesProvider;
+import org.hibernate.dialect.Dialect;
+import org.hibernate.engine.jdbc.dialect.internal.StandardDialectResolver;
+import org.hibernate.engine.jdbc.dialect.spi.DatabaseMetaDataDialectResolutionInfoAdapter;
+import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
+
+import javax.sql.DataSource;
+import java.sql.SQLException;
+
+public class JpaHibernatePropertiesProvider extends HibernatePropertiesProvider {
+
+  private final Dialect dialect;
+
+  public JpaHibernatePropertiesProvider(LocalContainerEntityManagerFactoryBean myEntityManagerFactory) {
+    DataSource connection = myEntityManagerFactory.getDataSource();
+    try {
+      dialect = new StandardDialectResolver()
+        .resolveDialect(new DatabaseMetaDataDialectResolutionInfoAdapter(connection.getConnection().getMetaData()));
+    } catch (SQLException sqlException) {
+      throw new ConfigurationException(sqlException.getMessage(), sqlException);
+    }
+  }
+
+  @Override
+  public Dialect getDialect() {
+    return dialect;
+  }
+}