GORM list() to return superclass objects only

I have a simple object 开发者_JAVA百科hierarchy, and I want to query each of the objects using list(). The problem is that because of polymorphism, Task.list() returns both instances of type Task and ComplexTask.

class Task {
}

class ComplexTask extends Task {
}

I realize I can solve my problem by having a common abstract superclass, or filter results based on returned type, but was wondering if there is a way to use dynamic finders and get back superclass instances only.

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Using the default table-per-hierarchy inheritance strategy, you can do something like this:

Task.findAll("from Task as t where t.class = 'Task'")

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i think that has to do with lazy loading, because the real instance is not loaded completely not only for relations but also for inheritance.