DataSource.groovy error - grails

Question

I am pretty new to Grails and am trying to learn things from the 'Grails in Action' book. I have this example which asks to change the dataSource url in the DataSource.groovy file and when I do that I get an error. Here are the changes and the error. Can anyone help me out? Thanks in advance,
previous:
dataSource {
dbCreate = "update" // one of 'create', 'create-drop', 'update', 'validate', ''
url = "jdbc:h2:mem:devDb;MVCC=TRUE;LOCK_TIMEOUT=10000"
After Change:
dataSource {
dbCreate = "update" // one of 'create', 'create-drop', 'update', 'validate', ''
url = "jdbc:hsqldb:file:devDB;shutdown=true"
Error:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManagerPostProcessor':
Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'transactionManager':
Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'sessionFactory':
Cannot resolve reference to bean 'hibernateProperties' while setting bean property 'hibernateProperties'; nested exception is org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'hibernateProperties':
Cannot resolve reference to bean 'dialectDetector' while setting bean property 'properties' with key [hibernate.dialect]; nested exception is org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'dialectDetector':
Invocation of init method failed; nested exception is org.springframework.jdbc.support.MetaDataAccessException:
Error while extracting DatabaseMetaData; nested exception is org.apache.commons.dbcp.SQLNestedException:
Cannot create JDBC driver of class 'org.h2.Driver' for connect URL 'jdbc:hsqldb:file:devDB;shutdown=true' (Use --stacktrace to see the full trace)

Answer 1

You've changed H2 to HSQLDB - you need to add corresponding dependency to BuildConfig.groovy:
dependencies {
runtime 'hsqldb:hsqldb:1.8.0.10'
}
Also use the following driver in DataSource.groovy:
driverClassName = "org.hsqldb.jdbcDriver"