Hello,
I Got a problem when quering data with the key <fileName> . The error
is below :
com.google.appengine.api.datastore.DatastoreNeedIndexException: no
matching index found..
<datastore-index kind="Picture" ancestor="false" source="manual">
<property name="__key__" direction="desc"/>
</datastore-index>
The index is not found, but i have declared it in the file <datastore-
indexes.xml> like this :
<?xml version="1.0" encoding="UTF-8"?>
<datastore-indexes autoGenerate="true">
<datastore-index kind="Picture" ancestor="false">
<property name="fileName" direction="desc" />
</datastore-index>
</datastore-indexes>
The query is :
PersistenceManager pm = PMF.get().getPersistenceManager();
javax.jdo.Query query = pm.newQuery(Picture.class);
query.setOrdering("fileName desc");
List<Picture> Pictures = (List<Picture>)
pm.newQuery(query).execute();
The java class Picture is :
@PersistenceCapable(identityType = IdentityType.APPLICATION)
public class Picture {
private static final Logger log =
Logger.getLogger(Picture.class.getName());
@PrimaryKey
private String fileName;
...
}
thanks for your help
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