datamapper

问题 I have the following xml as my input InputXML: <Orders> <Order> <sample id="1"></sample> <sample id="2"></sample> . . . . </Order> <Order> <sample id="1"></sample> <sample id="2"></sample> . . . . </Order> <Order> <sample id="1"></sample> <sample id="2"></sample> . . . . </Order> . . . . </Orders> I need to send this xml to the batch component in my flow. My batch should accept each record in the following manner Record1:1st Order Record2:2nd Order Record3:3rd Order . . . . Now please let me

问题 Perhaps this is a question with a trivial answer but nevertheless it is driving me nuts for a couple of days so i would like to hear an answer. I'm recently looking up a lot of information related to building a custom datamapper for my own project (and not using an ORM) and read several thread on stackoverflow or other websites. It seems very convincing to me to have AuthorCollection objects, which are basically only a container of Author instances or BookCollection objects, which hold

问题 I started learning Datamapper and what I liked about it was that I can write my models with real inheritance. Now I wonder, if it is possible to be more advanced about this: class Event include DataMapper::Resource property :id, Serial property :begin, DateTime property :type, Discriminator end class Talk<Event property :title, String belongs_to :meeting end class Meeting<Event has n, :talks end That code fails to create the :title column for the Talk and obviously, the discriminator column

问题 Does anyone know if Laravel has some sort of library/plugin or tweak to use Data Mapper or to make Active Record behave like Data Mapper?. I'm not a Laravel user,so perhaps Eloquent is using a mix of Active Record and Data Mapper and I'm not aware of that. 回答1: So, we can implement the Data Mapper pattern into Laravel using Doctrine; Packagist: https://packagist.org/packages/atrauzzi/laravel-doctrine Laravel Doc: http://bundles.laravel.com/bundle/doctrine 来源： https://stackoverflow.com

问题 I have an object that has a variable that's a List like so: ExportQueue.java public class ExportQueue implements Serializable { private List<String> errors; public List<String> getErrors() { return errors; } public void setErrors(List<String> errors) { this.errors = errors; } public void addError(String error) { if(this.errors == null) this.errors = new ArrayList<String>(); this.errors.add(error); } } I've defined the ResultMap for this... ExportQueueDao.xml <mapper namespace="...">

问题 Please help me to understand the basic use of Datamapper's include_join_fields function. I tried it lots of but not getting any results. I have application like $object->include_join_fields() I have User table and Country table. Please help me to set $hasone=array('country_id'); relation I haven't any idea about this all, even not getting the exact point after reading documentation of include_join_fields Any help will appricate Thanks 回答1: include_join_fields are for many to many

问题 We are trying to use DB lookup in Mule data mapper in our project, We are able to validate successful connection without integrated authentication even though when we have added sqljdbc_auth.dll in classpath as well as in the referenced library we are not able to have integrated authentication. Any pointers to resolve this issue will be helpful. Thanks! 回答1: Adding if this will be helpful to any of those who came across this issue - I finally made it working by adding JTDS drivers in the

问题 At our company we pull a .CSV file from the suppliers FTP server and update our product data (price, stock,..) each morning. We wrote a cron for this task as it should run automatically. The current script is working in most cases. However, sometimes we recieve an error: 'Allowed memory size of 134217728 bytes exhausted (tried to allocate 75 bytes)'. We use CodeIgniter with DataMapper ORM. A possible design error might be the fact that the script is working with objects instead of array's...

问题 Whenever I try and count the returned records from datamapper it always returns as 0, whether there is a user or not. User.count(:username=>params[:username]) class User include DataMapper::Resource property :id, Serial property :username, String, unique_index: true, required: true, length: 3..32 property :password, String, required: true, length: 5..64 property :email, String, unique_index: true, required: true, format: :email_address end 回答1: Can you try User.all(:username=>params[:username

问题 ive looked through the DataMapper docs but am struggling to see how to do this. I have two tables and I simply wish to add the 'handle' attribute from the User table, as a column to the Peeps table - as per below? 回答1: Doc: http://datamapper.org/docs/associations.html Customizing Associations section. class User ... has n, :peeps, 'Peep', :parent_key => [ :handle ], # local to this model (User) :child_key => [ :user_handle ] # in the remote model (Peep) end class Peep ... belongs_to :user,