gorm

In my task management application, users should be able to filter tasks based on : assignedTo , priority , status and/or dueDate I am not sure on how to create a dynamic query in that it will build a query based on the available parameters. For example : If I have a URL such as : task/index?assignedTo=1&status=2 I can build a query based on only these two parameters. The method I am used to is the Task.findAllByAssignedToAndStatus( User.get(params.assignedTo), TaskStatus.get(params.status) ) I obviously dont want to implement a DRY method by writing out each findAllBy query for every possible

What are the possible solutions for stripping the trailing whitespace when mapping char fields in a legacy database? I see the following options: Calling .trim() at the point of use (controller, view, etc) Override property accessors to return .trim() Using a Hibernate UserType to trim the whitespace I'm leaning toward overriding the property accessor so that the domain properties remain consistent throughout the application. I had a similar problem and I could not alter the legacy data. I ended up overriding the accessor for the sake of transparency to my fellow developers. I would recommend

I have a domain class with a date-property. class Transaction { LocalDate time BigDecimal amount } How can I query for the sum of all transactions grouped by month? I can´t find any support for group by a date-range in GORM. Add a formula based field to your domain class for the truncated date: class Transaction { LocalTime time BigDecimal amount String timeMonth static mapping = { timeMonth formula: "FORMATDATETIME(time, 'yyyy-MM')" // h2 sql //timeMonth formula: "DATE_FORMAT(time, '%Y-%m')" // mysql sql } } Then you'll be able to run queries like this: Transaction.withCriteria { projections

I have a method with the following structure: public void run(){ ... for (...) { //this part works correct User.withTransaction { User user = User.findByUsername(...); Position pos = Position.findByName(...) if(pos){ ... } else { ... try{ pos.save(flush:true); user.position = pos; } catch (Exception e){ ... } } ... try{ user.save(flush:true, failOnError: true); } catch (Exception e){ ... } } } //this part doesn't work User.findAll().each { ... if (...){ User.withTransaction{ ... //here the operation fails with //org.hibernate.LazyInitializationException: //could not initialize proxy - no

I have a strange problem. I have two domain classes User and Post with fields: class User { String name static hasMany = [posts: Post] static constraints = { } } and class Post { String content long date = System.getTimeInMillis() static constraints = { } static belongsTo = [user: User] static mapping = { version: 'false' } } and controller code is: class UserController { def addUser = { def user if (User.count() == 0) { user = new User() user.name = "Manish Zedwal" user.save(flush: true) } else { user = User.get(1) } println "Posts count: " + user.posts.size() render "post count: " + user

I'm trying to sort a table of data. I have the following domain (paraphrased and example-ified): class Car { Engine engine static constraints = { engine nullable: true // poor example, I know } } class Engine { String name } Here's the controller action that's handling the sort: def myAction = { def list = Car.findAll(params) render(view: 'list', model: [list: list]) } I provision some data such that there are several Cars, some with null engines and others with engines that are not null. I attempt the following query: http://www.example.com/myController/myAction?sort=engine.name&order=asc The