Using SitecoreService in computed index field - getting NRE when checking to see if cache enabled.

[TimEllison]

@mikeedwards83, Thanks for helping me understand the other issue. Since upgrading to the latest version of Glass, our computed index fields are now returning NREs.

Code is as follows:

            var item = (Item)scIndexable;
            if (item == null)
            {
                return null;
            }
            if (item.TemplateID != ID.Parse(Guid.Parse(SitecoreTemplatesId.Research.MakeTemplate)))
            {
                return null;
            }
            var context = new Glass.Mapper.Sc.SitecoreService(item.Database);
            var make = context.GetItem<CarMake>(item.ID.Guid);
            var result = make.UrlFragment.ToLower();
            return result;

The stack trace is consistent with all the computed fields.

	StackTrace	"   at Glass.Mapper.Sc.SitecoreTypeCreationContext.get_CacheEnabled() in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper.Sc\SitecoreTypeCreationContext.cs:line 74   
	at Glass.Mapper.Pipelines.ObjectConstruction.Tasks.CacheCheck.CacheCheckTask.Execute(ObjectConstructionArgs args) 
	in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\ObjectConstruction\Tasks\CacheCheck\CacheCheckTask.cs:line 16  
	at Glass.Mapper.Pipelines.AbstractPipelineRunner`2.<>c__DisplayClass3.<CreateTaskExpression>b__2(T args) 
	in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\AbstractPipelineRunner.cs:line 77   
	at Glass.Mapper.Pipelines.AbstractPipelineRunner`2.<>c__DisplayClass3.<CreateTaskExpression>b__2(T args) 
	in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\AbstractPipelineRunner.cs:line 80   
	at Glass.Mapper.Pipelines.AbstractPipelineRunner`2.<>c__DisplayClass3.<CreateTaskExpression>b__2(T args) 
	in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\AbstractPipelineRunner.cs:line 80   
	at Glass.Mapper.AbstractService.InstantiateObject(AbstractTypeCreationContext abstractTypeCreationContext) 
	in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\AbstractService.cs:line 138   
	at Glass.Mapper.Sc.SitecoreService.CreateType(Type type, Item item, Boolean isLazy, Boolean inferType, Dictionary`2 parameters, Object[] constructorParameters) 
	in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper.Sc\SitecoreService.cs:line 495   
	at Glass.Mapper.Sc.SitecoreService.GetItem[T](Guid id, Boolean isLazy, Boolean inferType) 
	in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper.Sc\SitecoreService.cs:line 898   

[mikeedwards83]

Are you using a Cachable model?

[TimEllison]

@mikeedwards83 - yes I am using a cachable model. It's a complex type with 2 properties that bring in other models also cachable. I've decorated those two properties with DontLoadLazily setting. I have since moved my computed index field classes back to sitecore Item API as a temporary workaround.