Tim is correct. App Engine's JDO implementation doesn't support any features that aren't directly supported by the datastore, including LIKE filters. Hence the UnsupportedDatastoreFeatureException.
If you have any more JDO-related questions, please post them in the Google App Engine for Java group: http://groups.google.com/group/google-appengine-java - Jason On Thu, Apr 30, 2009 at 6:11 PM, Tim Hoffman <zutes...@gmail.com> wrote: > > HI Basil > > Unfortunately 'like' isn't supported. The underlying datastore has no > such capability > despite your ability to define it in JDO. > > T > > On May 1, 12:44 am, Basil Dsouza <bas...@gmail.com> wrote: > > Hello, > > > > I am a newbie in JDO (been trying it for about 2 days) and I am facing > > writing queries to retrieve data. I dont know if this is a problem > > specifically with the google supported implementation of JDO or > > something i am doing wrong. > > > > I am trying to write a where containing the equivalent of the "LIKE" > > keyword. > > Specifically I am doing: > > query.setFilter("firstName.matches(firstNameParam) && lastName.matches > > (lastNameParam)"); > > > > this is what i found on the net, though it doesnt work ( > http://www.theserverside.com/tt/articles/article.tss?l=JDOQueryPart1) > > > > The error I get is: > > Apr 30, 2009 9:51:27 PM com.google.apphosting.utils.jetty.JettyLogger > > warn > > WARNING: Nested in org.apache.jasper.JasperException: > > org.datanucleus.store.appengine.query.DatastoreQuery > > $UnsupportedDatastoreFeatureException: Problem with query <SELECT FROM > > com.basildsouza.odometer.datalayer.dataobjects.User WHERE > > firstName.matches(firstNameParam) && lastName.matches(lastNameParam) > > PARAMETERS String firstNameParam, String lastNameParam ORDER BY > > lastName asc, firstName asc>: Unexpected expression type while parsing > > query: org.datanucleus.query.expression.InvokeExpression: > > org.datanucleus.store.appengine.query.DatastoreQuery > > $UnsupportedDatastoreFeatureException: Problem with query <SELECT FROM > > com.basildsouza.odometer.datalayer.dataobjects.User WHERE > > firstName.matches(firstNameParam) && lastName.matches(lastNameParam) > > PARAMETERS String firstNameParam, String lastNameParam ORDER BY > > lastName asc, firstName asc>: Unexpected expression type while parsing > > query: org.datanucleus.query.expression.InvokeExpression > > > > I have tried the like clause directly, and predictably, that didnt > > work. > > > > Any clues as to how should I get this working? Or should I be asking > > this on a JDO forum? > > > > Thanks and Regards, > > Basil Dsouza > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---
