On 25 Mar 2010, at 10:09, pman wrote:
I have gone thru the Slim3 document.
Can we have this?
@MOdel
class Parent {
List<Child> childs = new ArrayList<Child>();
}
@Model Child {
}
If so, how to get parents based on child's property in Slim3?
Hi TQ,
Twig supports these direct relationships like this:
class Parent {
List<Child> children;
}
class Child {
String someProperty;
}
So no need to annotate the Model. Then you find parents based on a
child property like this:
Iterator<Parent> parents = datastore.find()
.type(Child.class)
.addFilter("someProperty", EQUAL, "someValue")
.returnParentsNow();
Twig is clever enough to batch get the parents using the same chunk
size as the children - in this case the default is 20 at a time.
http://code.google.com/p/twig-persist/
John
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