[#GRAILS-2754] Self-relationship throws exception and causes HTTP error 503 (server unavailable)

Grails

Self-relationship throws exception and causes HTTP error 503 (server unavailable)

Created: 30/Mar/08 12:33 AM Updated: 31/Mar/08 08:26 PM

Component/s:

None

Affects Version/s:

1.0.2

Fix Version/s:

1.0.3

Time Tracking:

Not Specified

File Attachments:

AutoBug.rar (177 kb)

Environment:

Microsoft Windows XP Professional (Service Pack 2), Pentium 4 CPU 3.20GHz 1GB RAM, Java SE JDK 1.6.0_05

Issue Links:

Duplicate

This issue duplicates:

~~GRAILS-2689~~ Domain classes with that have properties of the same class cause grails hibernate to crash on startup

Description

« Hide

Self-relationship in a domain class breaks Grails.

Example:

1 - Create a new application:
grails create-app AutoBug
cd AutoBug

2 - Create a domain class:
grails create-domain-class Message

3 - Add some properties and a self-relationship to the domain class:
notepad grails-app\domain\Message.groovy

Message.groovy

// This code breaks Grails 1.0.2
class Message {
        String from
        String to
        String subject
        String content
        Message reply // <-- The problem is here!
}

4 - Run the application:
grails run-app

5 - The result will be like this:

Stacktrace

...
2008-03-30 04:31:16.576::WARN: Failed startup of context org.mortbay.jetty.weba
pp.WebAppContext@1454f68

Unknown macro: {/AutoBug,D}

org.springframework.beans.factory.BeanCreationException: Error creating bean wit
h name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' w
hile setting bean property 'sessionFactory'; nested exception is org.springframe
work.beans.factory.BeanCreationException: Error creating bean with name 'session
Factory': Invocation of init method failed; nested exception is java.lang.NullPo
interException
at java.security.AccessController.doPrivileged(Native Method)
at RunApp_groovy$_run_closure2_closure7.doCall(RunApp_groovy:68)
at RunApp_groovy$_run_closure2_closure7.doCall(RunApp_groovy)
at Init_groovy$_run_closure6.doCall(Init_groovy:128)
at RunApp_groovy$_run_closure2.doCall(RunApp_groovy:67)
at RunApp_groovy$_run_closure2.doCall(RunApp_groovy)
at RunApp_groovy$_run_closure1.doCall(RunApp_groovy:59)
at RunApp_groovy$_run_closure1.doCall(RunApp_groovy)
at gant.Gant.dispatch(Gant.groovy:271)
at gant.Gant.this$2$dispatch(Gant.groovy)
at gant.Gant.invokeMethod(Gant.groovy)
at gant.Gant.processTargets(Gant.groovy:436)
at gant.Gant.processArgs(Gant.groovy:372)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creati
ng bean with name 'sessionFactory': Invocation of init method failed; nested exc
eption is java.lang.NullPointerException
at java.security.AccessController.doPrivileged(Native Method)
... 13 more
Caused by: java.lang.NullPointerException
... 14 more
2008-03-30 04:31:17.592::WARN: Nested in org.springframework.beans.factory.Bean
CreationException: Error creating bean with name 'transactionManager': Cannot re
solve reference to bean 'sessionFactory' while setting bean property 'sessionFac
tory'; nested exception is org.springframework.beans.factory.BeanCreationExcepti
on: Error creating bean with name 'sessionFactory': Invocation of init method fa
iled; nested exception is java.lang.NullPointerException:
java.lang.NullPointerException
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessController.doPrivileged(Native Method)
at RunApp_groovy$_run_closure2_closure7.doCall(RunApp_groovy:68)
at RunApp_groovy$_run_closure2_closure7.doCall(RunApp_groovy)
at Init_groovy$_run_closure6.doCall(Init_groovy:128)
at RunApp_groovy$_run_closure2.doCall(RunApp_groovy:67)
at RunApp_groovy$_run_closure2.doCall(RunApp_groovy)
at RunApp_groovy$_run_closure1.doCall(RunApp_groovy:59)
at RunApp_groovy$_run_closure1.doCall(RunApp_groovy)
at gant.Gant.dispatch(Gant.groovy:271)
at gant.Gant.this$2$dispatch(Gant.groovy)
at gant.Gant.invokeMethod(Gant.groovy)
at gant.Gant.processTargets(Gant.groovy:436)
at gant.Gant.processArgs(Gant.groovy:372)
2008-03-30 04:31:18.496::INFO: Started SelectChannelConnector@0.0.0.0:8080
Server running. Browse to http://localhost:8080/AutoBug

The application works no more. If you try to access it, you get HTTP error 503.

Remove the self-relationship from Message.groovy and everything returns to normal:

notepad grails-app\domain\Message.groovy

Message.groovy

// This code works. 
class Message {
        String from
        String to
        String subject
        String content
}

Description

Self-relationship in a domain class breaks Grails. Example: 1 - Create a new application: grails create-app AutoBug cd AutoBug 2 - Create a domain class: grails create-domain-class Message 3 - Add some properties and a self-relationship to the domain class: notepad grails-app\domain\Message.groovy

Message.groovy

// This code breaks Grails 1.0.2
class Message {
        String from
        String to
        String subject
        String content
        Message reply // <-- The problem is here!
}

4 - Run the application: grails run-app 5 - The result will be like this:

Stacktrace

... 2008-03-30 04:31:16.576::WARN: Failed startup of context org.mortbay.jetty.weba pp.WebAppContext@1454f68

Unknown macro: {/AutoBug,D}

org.springframework.beans.factory.BeanCreationException: Error creating bean wit h name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' w hile setting bean property 'sessionFactory'; nested exception is org.springframe work.beans.factory.BeanCreationException: Error creating bean with name 'session Factory': Invocation of init method failed; nested exception is java.lang.NullPo interException at java.security.AccessController.doPrivileged(Native Method) at RunApp_groovy$_run_closure2_closure7.doCall(RunApp_groovy:68) at RunApp_groovy$_run_closure2_closure7.doCall(RunApp_groovy) at Init_groovy$_run_closure6.doCall(Init_groovy:128) at RunApp_groovy$_run_closure2.doCall(RunApp_groovy:67) at RunApp_groovy$_run_closure2.doCall(RunApp_groovy) at RunApp_groovy$_run_closure1.doCall(RunApp_groovy:59) at RunApp_groovy$_run_closure1.doCall(RunApp_groovy) at gant.Gant.dispatch(Gant.groovy:271) at gant.Gant.this$2$dispatch(Gant.groovy) at gant.Gant.invokeMethod(Gant.groovy) at gant.Gant.processTargets(Gant.groovy:436) at gant.Gant.processArgs(Gant.groovy:372) Caused by: org.springframework.beans.factory.BeanCreationException: Error creati ng bean with name 'sessionFactory': Invocation of init method failed; nested exc eption is java.lang.NullPointerException at java.security.AccessController.doPrivileged(Native Method) ... 13 more Caused by: java.lang.NullPointerException ... 14 more 2008-03-30 04:31:17.592::WARN: Nested in org.springframework.beans.factory.Bean CreationException: Error creating bean with name 'transactionManager': Cannot re solve reference to bean 'sessionFactory' while setting bean property 'sessionFac tory'; nested exception is org.springframework.beans.factory.BeanCreationExcepti on: Error creating bean with name 'sessionFactory': Invocation of init method fa iled; nested exception is java.lang.NullPointerException: java.lang.NullPointerException at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessController.doPrivileged(Native Method) at RunApp_groovy$_run_closure2_closure7.doCall(RunApp_groovy:68) at RunApp_groovy$_run_closure2_closure7.doCall(RunApp_groovy) at Init_groovy$_run_closure6.doCall(Init_groovy:128) at RunApp_groovy$_run_closure2.doCall(RunApp_groovy:67) at RunApp_groovy$_run_closure2.doCall(RunApp_groovy) at RunApp_groovy$_run_closure1.doCall(RunApp_groovy:59) at RunApp_groovy$_run_closure1.doCall(RunApp_groovy) at gant.Gant.dispatch(Gant.groovy:271) at gant.Gant.this$2$dispatch(Gant.groovy) at gant.Gant.invokeMethod(Gant.groovy) at gant.Gant.processTargets(Gant.groovy:436) at gant.Gant.processArgs(Gant.groovy:372) 2008-03-30 04:31:18.496::INFO: Started SelectChannelConnector@0.0.0.0:8080 Server running. Browse to http://localhost:8080/AutoBug

The application works no more. If you try to access it, you get HTTP error 503. Remove the self-relationship from Message.groovy and everything returns to normal: notepad grails-app\domain\Message.groovy

Message.groovy

// This code works. 
class Message {
        String from
        String to
        String subject
        String content
}

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Márcio Sugar - 30/Mar/08 06:50 PM

Grails 1.0.3 has the same problem, but version 1.0-RC4 is OK.