gorm

I've got an application that was using Grails 1.3.7 which I've just migrated to Grails 2.0. The application makes use of the automatic dateCreated and lastUpdated fields to manage the timestamps associated with creation and modification of the objects. After upgrading, I get the following error: | Running Grails application | Error 2012-01-29 22:36:53,504 [Thread-8] ERROR util.JDBCExceptionReporter - ERROR: null value in column "date_created" violates not-null constraint | Error 2012-01-29 22:36:53,510 [Thread-8] ERROR events.PatchedDefaultFlushEventListener - Could not synchronize database

This question is in two parts, first part is about clearing a list and second part is about assigning an owner to an object. I have a one-to-many relationship between two domain objects in my model in Grails. The relationship looks like this... class Person { static hasMany = [authorities: Role, locations: Location] } class Location { static belongsTo = Person } In my app the locations list on Person gets completely refreshed and replaced with a new list on a user action. What's more I get the list of Location objects independent of the associated Person . I resolve which person to apply them

Maybe a silly question but where/how should I define default values for GORM domain class properties? For example when I'm creating a new Company object instance I want default value for property country to be "USA". I guess I could do it in create controller but it looks kinda dirty. Something like: def create = { def companyInstance = new Company() companyInstance.properties = params companyInstance.accepted = "USA" ... Put it in the domain class itself class Company { String country = "USA" } 来源： https://stackoverflow.com/questions/8256627/gorm-domain-class-properties-default-values

I'm upgrading to the Hibernate4:4.3.5.3 plugin for Grails 2.3.9 . However, I'm getting an error: getGeneratedKeys() support is not enabled I haven't been able to find any configuration details on how to enable this. I just found that you can configure it under DataSource.groovy in the hibernate{...} block hibernate{ jdbc.use_get_generated_keys = true } 来源： https://stackoverflow.com/questions/24050291/grails-hibernate4-upgrade-errors-on-getgeneratedkeys

Is it possible to do an "in" criteria using the GORM criteria. I'm looking for the equivalent of the following SQL select * from Person where age in (20,21,22); If it was possible I guess the syntax would be something like: def results = Person.withCriteria { in "age", [20, 21, 22] } The Grails createCriteria documentation includes an example of using the in clause: 'in'("holderAge",[18..65]) or not{'in'("holderAge",[18..65])} The documentation includes this note: Note: 'in' is a groovy reserve word, so it must be escaped by quotes. Yep, you have it almost exactly right. Just change in to 'in'

I'm having trouble with Grails 2.0 and Postgresql 9.1 I'm trying to map an existing database, with sequential ids. However, even without creating any class in the domain, I'm having the error : Compiling 1 source files..... | Running Grails application | Error executing bootstraps: Error creating bean with name 'transactionManagerPostProcessor': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property

I'm new to grails and receive the following error: No signature of method: Something.findAll() is applicable for argument types: (java.lang.String, java.util.ArrayList) values: [from Something AS s WHERE s.some_number LIKE ?, [%asdf%]]" The error occurs when I run test-app . It occurs in the following place: SomethingVO[] findBySomeNumber(String searchString) { searchString = "%"+searchString+"%" return Something.findAll("from Something AS s WHERE s.some_number LIKE ?",[searchString]).collect { new SomethingVO(it); } } The class Something is a domain object: package some.project.domain class