Hi Cornel,
Both the keyWords_S and subcategory fields are lists, which means this will
be an 'exploding' index - the number of entries required is the product of
the number of entries in each list. If this exceeds a few thousand for any
entity, the list is likely to fail to build.
-Nick Johnson
On Sun, Sep 6, 2009 at 11:10 PM, Cornel <corneliu.lupu...@gmail.com> wrote:
>
> Hello!
>
> The following index definition keeps giving "Error". What are the
> possible reasons for an index to be error prone?
>
> <datastore-index kind="DbContact" ancestor="false" source="auto">
> <property name="isCustomerProfile" direction="asc"/>
> <property name="keyWords_S" direction="asc"/>
> <property name="subcategory" direction="asc"/>
> <property name="version" direction="asc"/>
> <property name="__key__" direction="asc"/>
> </datastore-index>
>
> Here is a part of the DbContact class:
>
> @PersistenceCapable(identityType = IdentityType.APPLICATION)
> public class DbContact extends DbEntity {
>
> @PrimaryKey
> @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
> @Extension(vendorName="datanucleus", key="gae.encoded-pk",
> value="true")
> private String encodedKey;
>
> @Persistent
> private String version
> @Persistent
> private List<String> category;
> @Persistent
> private List<String> subcategory;
> @Persistent
> private String isCustomerProfile;
> @Persistent
> private List<String> keyWords_S;
>
> I shoud mention the i also have an index similar to the one above, the
> only difference being "category", instead of "subcategory", which was
> created succesfully and is now "Serving".
> >
>
--
Nick Johnson, Developer Programs Engineer, App Engine
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