实现接口后，Grails域类没有setter方法

Question

I have two java interface:

public interface ProductRevision {
    String getName();
    public ComponentRevision getTiedComponent();
}

public interface ComponentRevision {
    String getName();
}

And then I define two Grails domain class:

class GormProductRevision implements ProductRevision {
    String name
    GormComponentRevision tiedComponent
}

class GormComponentRevision implements ComponentRevision {
    String name
}

There is no compile error, However when I call below controller:

class GormProductRevisionController {
   def save() {
        GormComponentRevision gormComponentRevision = new GormComponentRevision()
        gormComponentRevision.name = 'Component'
        gormComponentRevision.save()

        GormProductRevision gormProductRevision = new GormProductRevision()
        gormProductRevision.name = 'Product'
        gormProductRevision.tiedComponent = gormComponentRevision
        gormProductRevision.save()
    }

}

it throws exception

Property 'tiedComponent' has no setter method in class 'class GormProductRevision'. Stacktrace follows:
Message: Property 'tiedComponent' has no setter method in class 'class GormProductRevision'
Line | Method
->> 2138 | setSimpleProperty in org.apache.commons.beanutils.PropertyUtilsBean
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   1957 | setNestedProperty in     ''
|   2064 | setProperty . . . in     ''
|    858 | setProperty       in org.apache.commons.beanutils.PropertyUtils
|     31 | save . . . . . .  in GormProductRevisionController
|    195 | doFilter          in grails.plugin.cache.web.filter.PageFragmentCachingFilter
|     63 | doFilter . . . .  in grails.plugin.cache.web.filter.AbstractFilter
|    886 | runTask           in java.util.concurrent.ThreadPoolExecutor$Worker
|    908 | run . . . . . . . in     ''
^    619 | run               in java.lang.Thread

Could anybody help me?

Answer 1

(Sorry, I don't have the reputation to 'comment' yet.)

I am seeing a strange version of this bug as well. And I wish what I could add was concrete. But for me, I only see this issue sometimes. I have a domain class that implements two interfaces and all is well in testing including deploying a war on my local (Mac) machine to tomcat.

When I deploy it in ec2 (ubuntu) on tomcat, sometimes this bug occurs, sometimes not. I thought it was that I had modified the domain object but with the datasource in 'update' (not 'create-drop') that there was some mismatch. One time I dropped the database and let it recreate and the problem went away. But I'm seeing the problem again and I haven't touch that domain class in a while.

I have found a workaround: take the datasource from create-drop to update, but then drop the database (using mysql or whatever your db client is), then let grails recreate the system. Could there be a problem in create-drop? Maybe. Could it be my brain? Absolutely!

So I'm not sure this is the same problem, or it mine is just something different and stupid but I wanted to add that I think I'm seeing something like this as well.

BTW, this class, just to give you all the details, has a transient byte[] field for a file upload. And that was NOT set to bindable until just now. And, not to hijack the thread, but that 'transients are no longer bound by default' acts weirdly and could maybe be related to my problems. No non-bound transients for OP's original question, right?