gorm

Imagine you have the following controller in a Grails 2.5.5 application: def index() { bookService.method() Book bako = Book.findById(4) System.out.println(bako.title); } And inside the bookService (with Grails default transaction management) you have the following method: class BookService def method() { Book bako = Book.findById(4) System.out.println(bako.title); // MANUAL UPDATE OF DB HAPPENS HERE Book bako = Book.findById(4) System.out.println(bako.title); } } And that your db does have a Book with id 4 called "The Lord of The Rings". If you then set breakpoints on all System.out.println()

I am trying to write formula in my domain class which helps me in creating criteria. class MyClass { //some fields Date appointmentTime String ddmmyy int year int month int day static transients = [ 'ddmmyy', 'year', 'month', 'day' ] static mapping= { ddmmyy formula('DATE_FORMAT(appointmentTime)') year formula('YEAR(appointmentTime)') month formula('MONTH(appointmentTime)') day formula('DAYOFMONTH(appointmentTime)') } } Whenever I am trying to use this fields in my criteria it throws error i.e. can not resolve property 'ddmmyy' of 'myClass'. MyCriteria is: Date myDate = Calender.instance.time

For example, I've parent class Cafee: class Cafee { String name static hasMany = [ admin: Person ] } and a child class Person: class Person { String name static belongsTo = [cafee: Cafee] } I've done some records to Cafee using: def user = new Person(name: "Andrew") def a = new Cafee(name: "Tarelka") .addToAdmin(user) .save() Adding child to parent works fine, but when I trying to create Person-instance separately, for example: def visitor = new Person(username: 'testerUser', password:'password', firstName:'Иван', lastName:'Иванов', email:'ivanov@gmail.com', isAdminCafee: false) visitor.save

I am trying to have a List of String that works in MySql in a Grails domain class. I have tried the following: class Catalogue { List books String book static hasMany = [books: book] } and class Catalogue { List books } and class Catalogue { String[] books } and class Catalogue { ArrayList<String> books = new ArrayList<String>() } The last three compiles but the entry is not present in MySQL. There is no table, or column to represent this data in MySQL and I have tried populating the array with data. Still nothing. Any ideas? user190117 You can achieve this by using hasMany . Furthermore you

So I want to create 3 plugins which include domain classes and a restful service, and who each build on top of each other. Conceptually, they would "inherit" the base model this way: Record > Person > User However I have Read From The Friendly Manual that inheritance may cause some performance issues. Then it crossed my mind that since Groovy has horizontal reuse capabilities (i.e. traits), I may very well just define everything in the trait and then implement the trait in the domain class. Composing domain classes is not an option for me because of the renaming of the fields, and well, the

I would like to intersect two lists of instances of a specific domain class using grails 1.3.7. The problem is, that the instances of one list are created by javasisst so that the result of the intersection is always an empty list. Here are my domains: class User { ... static hasMany = [foos : Foo] ... } class Foo { ... static hasMany = [bars : Bar] ... } class Bar { ... static hasMany = [localizedTitles : LocalizedTitle] ... } I get the list of all Bar instances of the user like this: def allBarsOfUser = userInstance.foos.bars.flatten() And try to intersect with another list of Bar instances:

I have the following classes: class Catalog { static mapping = { id composite:['name', 'manufacturer'] columns { name column:'cat_name' manufacturer column:'manuf_id' } } String name Manufacturer manufacturer } class Order { static mapping = { columns { // How to rename foreign keys as cat_name, manuf_id? } } Catalog catalog // creates catalog_name, catalog_manufacturer_name } Presently, an Order table is generated with the attributes catalog_name and catalog_manufacturer_name (which reference the composite primary keys of the Catalog table). I need to rename these generated columns to cat