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
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