Question

I am working on a backend Grails application that pulls information periodically from a RESTful service. To do this I installed the Grails Quartz plugin.

grails install-plugin quartz

I then created a job using

grails create-job My

which geneates a MyJob file which I configured with a cron trigger

static triggers = {
    cron name: 'myTrigger', cronExpression: '0 0 * * * ?' // hourly
}

Running the application locally in the dev environment works correctly, however once I try to build a testing or production war I get the following exception when the trigger is run.

2010-02-18, 00:04:32 ERROR org.codehaus.groovy.grails.web.context.GrailsContextLoader - Error occurred shutting down plug-in manager: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'quartzScheduler':
Cannot resolve reference to bean 'sessionBinderListener' while setting bean property 'jobListeners' with key [0]; nested
 exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionBinderListener': Initialization of bean failed; 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 java.sql.SQLException : Access is denied: Session is closed

As I don’t require a database, I tried removing the Hibernate plugin as suggested,
but I get compilation problems once the Hibernate plugin has been removed:

Running script C:\Downloads\grails-1.2.1\scripts\RunApp.groovy  
Environment set to development  
[groovyc] Compiling 18 source files to C:\Projects\myapp\target\classes  
[groovyc] org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed, Compile error during compilation with javac.  
[groovyc] ...\myapp\plugins\quartz-0.4.1\src\java\org\codehaus\groovy\grails\plugins\quartz\listeners\SessionBinderJobListener.java:19: package org.hibernate does not exist  
[groovyc] import org.hibernate.FlushMode;  
...

Is there any way to use the Quartz plugin without the Hibernate plugin?
If not, would the best idea be to configure an in-memory database for Quartz to use? (I’m not concerned with the persistence of any of this data.)

Answer 1

I’ve managed to get this working by leaving the Hibernate plugin installed and configuring the in-memory database. In DataSource.groovy

...
environments {
  development {
    dataSource {
      dbCreate = "create-drop" // one of 'create', 'create-drop','update'
      url = "jdbc:hsqldb:mem:myDevDb"
    }
  }
  test {
    dataSource {
      dbCreate = "create-drop"
      url = "jdbc:hsqldb:mem:myTestDb"
    }
  }
  production {
    dataSource {
      dbCreate = "create-drop"
      url = "jdbc:hsqldb:mem:myProdDb;shutdown=true"
    }
  }
}
...

The change was to set “create-drop” on the test & production databases and set the production database to ‘mem’ instead of ‘file’.