I face same requirement and store sub-object is working fine but retrieve with filter ob subject is not working. showing error. what I should do ?????
On Nov 11, 11:40 am, enthusiast <[email protected]> wrote: > I have a very basic question about JDOQL with GAE/J. Hope someone can > shine light on this: > > I have modeled two persistent objects Employee and ContactInfo such > that Employee contains an instance of ContactInfo, as follows: > > ContactInfo.java > > import com.google.appengine.api.datastore.Key; > // ... imports ... > > @PersistenceCapable(identityType = IdentityType.APPLICATION) > public class ContactInfo { > @PrimaryKey > @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY) > private Key key; > > @Persistent > private String city; > > // ... > > } > > Employee.java > > import ContactInfo; > // ... imports ... > > @PersistenceCapable(identityType = IdentityType.APPLICATION) > public class Employee { > @PrimaryKey > @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY) > private Key key; > > @Persistent > private Integer salary; > > @Persistent > private ContactInfo contactInfo; > > Integer getSalary() { > return salary; > } > > void setSalary(Integer salary) { > this.salary = salary; > } > > ContactInfo getContactInfo() { > return contactInfo; > } > > void setContactInfo(ContactInfo contactInfo) { > this.contactInfo = contactInfo; > } > > // ... > > } > > I am able to create instances of Employee with relevant ContactInfo > objects. However, I am not able to query for Employee which uses a > field on the ContactInfo object. E.g. If I want to retrieve only those > employees whose salary > 10000 AND ContactInfo.city == "New York", how > do I construct such a query? > > If I just want to query on the field in the Employee object, I get the > results, but when I use a field in the sub-object of Employee (i.e. > ContactInfo) I get an error. > > Any help??? -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
