Spring com HsqlDB!

Estou tentando usar o Spring com Hsqldb, mas estou tendo problemas para setar as propriedades corretas na classe JPAConfiguration. Vou colocar como está abaixo:

public class JPAConfiguration {

@Bean  //gerenciável pelo Spring 
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
    LocalContainerEntityManagerFactoryBean FactoryBean = 
            new LocalContainerEntityManagerFactoryBean();
    JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
    FactoryBean.setJpaVendorAdapter(vendorAdapter);

    DriverManagerDataSource dataSource = new DriverManagerDataSource();
    dataSource.setUsername("SA");
    dataSource.setPassword("");
    dataSource.setUrl("jdbc:hsqldb:hsql://localhost/casadocodigo");
    dataSource.setDriverClassName("org.hsqldb.jdbc.JDBCDriver");

    FactoryBean.setDataSource(dataSource);

    Properties props = new Properties();
    props.setProperty("javax.persistence.jdbc.driver", "org.hsqldb.jdbc.JDBCDriver");
    props.setProperty("hibernate.dialect", "org.hibernate.dialect.HSQLDialect");
    props.setProperty("hibernate.show_sql", "true");
    props.setProperty("hibernate.hbm2ddl.auto", "update");
    FactoryBean.setJpaProperties(props);

    FactoryBean.setPackagesToScan("br.com.casadocodigo.loja.models");

    return FactoryBean;

}

}