I have tried the simplest approach and it works:
query.setFilter("tags == '" + aTagValue + "' ");
On Jan 3, 5:05 pm, Itzik Yatom <[email protected]> wrote:
> I consider to use the built in Category class for implementing tags
> for one of my datastore classes. Something like:
> .
> import com.google.appengine.api.datastore.Category;
> .
> @Persistent
> protectedList<Category> tags;
> .
> My question is how do I filter objects by a tag value, for example I
> want to get all objects that have a 'pollution' tag.
> Actually, there are here two questions:
> 1. How to query by fields that are lists (or collections)?
> 2. How to use Category class in queries ?
>
> Thanks
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