Grails searchable plugin errors mapping hasMany

Question

I"m using 0.6.3 of searchable and grails-1.3.7. If I do not map the Domain hasMany properties thing work fine. However, if I map a hasMany property like the example in the documentation:

http://www.grails.org/Searchable+Plugin+-+Mapping+-+Class+Property+Mapping

 comments component: true

or

 keywords index: 'not_analyzed'

in the searchable closure, I get this error

2011-10-10 15:20:53,788 [main] ERROR context.GrailsContextLoader  - Error executing bootstraps: Error creating bean with name 'compassGps': Cannot resolve reference to bean 'compass' while setting bean property 'compass'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'compass': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalArgumentException: Unable to map [com.ace.mws.servicetemplates.ServiceTemplate.services]. It does not appear to a suitable 'searchable property' (normally simple types like Strings, Dates, Numbers, etc), 'searchable reference' (normally another domain class) or 'searchable component' (normally another domain class defined as a component, using the 'embedded' declaration). Is it a derived property (a getter method with no equivalent field) defined with 'def'? Try defining it with a more specific return type
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'compassGps': Cannot resolve reference to bean 'compass' while setting bean property 'compass'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'compass': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalArgumentException: Unable to map [com.ace.mws.servicetemplates.ServiceTemplate.services]. It does not appear to a suitable 'searchable property' (normally simple types like Strings, Dates, Numbers, etc), 'searchable reference' (normally another domain class) or 'searchable component' (normally another domain class defined as a component, using the 'embedded' declaration). Is it a derived property (a getter method with no equivalent field) defined with 'def'? Try defining it with a more specific return type
        at org.grails.tomcat.TomcatServer.start(TomcatServer.groovy:212)
        at grails.web.container.EmbeddableServer$start.call(Unknown Source)
        at grails.web.container.EmbeddableServer$start.call(Unknown Source)
        at _GrailsRun_groovy$_run_closure5_closure12.doCall(_GrailsRun_groovy:158)
        at _GrailsRun_groovy$_run_closure5_closure12.doCall(_GrailsRun_groovy)
        at _GrailsSettings_groovy$_run_closure10.doCall(_GrailsSettings_groovy:280)
        at _GrailsSettings_groovy$_run_closure10.call(_GrailsSettings_groovy)
        at _GrailsRun_groovy$_run_closure5.doCall(_GrailsRun_groovy:149)
        at _GrailsRun_groovy$_run_closure5.call(_GrailsRun_groovy)
        at _GrailsRun_groovy.runInline(_GrailsRun_groovy:116)
        at _GrailsRun_groovy.this$4$runInline(_GrailsRun_groovy)
        at _GrailsRun_groovy$_run_closure1.doCall(_GrailsRun_groovy:59)
        at _GrailsRun_groovy$_run_closure8_closure14.doCall(_GrailsRun_groovy:263)
        at _GrailsRun_groovy$_run_closure8_closure14.doCall(_GrailsRun_groovy)
        at _GrailsPackage_groovy$_run_closure8.doCall(_GrailsPackage_groovy:299)
        at _GrailsPackage_groovy$_run_closure8.call(_GrailsPackage_groovy)
        at _GrailsRun_groovy$_run_closure8.doCall(_GrailsRun_groovy:245)
        at RunApp$_run_closure1.doCall(RunApp:35)
        at gant.Gant$_dispatch_closure5.doCall(Gant.groovy:381)
        at gant.Gant$_dispatch_closure7.doCall(Gant.groovy:415)
        at gant.Gant$_dispatch_closure7.doCall(Gant.groovy)
        at gant.Gant.withBuildListeners(Gant.groovy:427)
        at gant.Gant.this$2$withBuildListeners(Gant.groovy)
        at gant.Gant$this$2$withBuildListeners.callCurrent(Unknown Source)
        at gant.Gant.dispatch(Gant.groovy:415)
        at gant.Gant.this$2$dispatch(Gant.groovy)
        at gant.Gant.invokeMethod(Gant.groovy)
        at gant.Gant.executeTargets(Gant.groovy:590)
        at gant.Gant.executeTargets(Gant.groovy:589)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'compass': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalArgumentException: Unable to map [com.ace.mws.servicetemplates.ServiceTemplate.services]. It does not appear to a suitable 'searchable property' (normally simple types like Strings, Dates, Numbers, etc), 'searchable reference' (normally another domain class) or 'searchable component' (normally another domain class defined as a component, using the 'embedded' declaration). Is it a derived property (a getter method with no equivalent field) defined with 'def'? Try defining it with a more specific return type
        ... 29 more
Caused by: java.lang.IllegalArgumentException: Unable to map [com.ace.mws.servicetemplates.ServiceTemplate.services]. It does not appear to a suitable 'searchable property' (normally simple types like Strings, Dates, Numbers, etc), 'searchable reference' (normally another domain class) or 'searchable component' (normally another domain class defined as a component, using the 'embedded' declaration). Is it a derived property (a getter method with no equivalent field) defined with 'def'? Try defining it with a more specific return type
        at grails.plugin.searchable.internal.compass.mapping.ClosureSearchableGrailsDomainClassCompassClassMapper.invokeMethod(ClosureSearchableGrailsDomainClassCompassClassMapper.groovy:217)
        at com.ace.mws.servicetemplates.ServiceTemplate$__clinit__closure1.doCall(ServiceTemplate.groovy:6)
        at com.ace.mws.servicetemplates.ServiceTemplate$__clinit__closure1.doCall(ServiceTemplate.groovy)
        at grails.plugin.searchable.internal.compass.mapping.ClosureSearchableGrailsDomainClassCompassClassMapper.searchableGetCompassClassPropertyMappings(ClosureSearchableGrailsDomainClassCompassClassMapper.groovy:97)
        at grails.plugin.searchable.internal.compass.mapping.ClosureSearchableGrailsDomainClassCompassClassMapper.this$3$searchableGetCompassClassPropertyMappings(ClosureSearchableGrailsDomainClassCompassClassMapper.groovy)
        at grails.plugin.searchable.internal.compass.mapping.ClosureSearchableGrailsDomainClassCompassClassMapper.getCompassClassMapping(ClosureSearchableGrailsDomainClassCompassClassMapper.groovy:129)
        at grails.plugin.searchable.internal.compass.mapping.CompositeSearchableGrailsDomainClassCompassClassMapper.getCompassClassMapping(CompositeSearchableGrailsDomainClassCompassClassMapper.java:93)
        at grails.plugin.searchable.internal.compass.mapping.AbstractSearchableGrailsDomainClassCompassClassMapper.getCompassClassMapping(AbstractSearchableGrailsDomainClassCompassClassMapper.java:52)
        at grails.plugin.searchable.internal.compass.config.mapping.SearchableClassPropertySearchableGrailsDomainClassMappingConfigurator.configureMappings(SearchableClassPropertySearchableGrailsDomainClassMappingConfigurator.java:80)
        at grails.plugin.searchable.internal.compass.config.DefaultGrailsDomainClassMappingSearchableCompassConfigurator.configure(DefaultGrailsDomainClassMappingSearchableCompassConfigurator.java:131)
        at grails.plugin.searchable.internal.compass.config.CompositeSearchableCompassConfigurator.configure(CompositeSearchableCompassConfigurator.java:39)
        at grails.plugin.searchable.internal.compass.spring.SearchableCompassFactoryBean.buildCompass(SearchableCompassFactoryBean.java:93)
        at grails.plugin.searchable.internal.compass.spring.SearchableCompassFactoryBean.getObject(SearchableCompassFactoryBean.java:58)
        ... 29 more

Answer 1

This is a known issue. The popular workarounds are either not mapping the hasMany fields (as you mentioned) or using merge(flush:true) on your object instance before save(flush:true) is called. I found not mapping the hasMany fields to be more effective and less of a headache since using merge(flush:true) can cause duplicate objects in some situations and also requires you manually maintain the search index. Read more about the issue here .