DataCollection

Implementators will be able to execute a SELECT to get all objects in the database related to a parent object.

public class Address : Object, Vda.DataObject {
	 // DataObject
	 public string database_table_name { get; construct set; }
	 public Vda.Connection database_connection { get; set; }
	 public Cancellable cancellable { get; set; }

	 // Database mapping
	 [Description (nick="@id::pkey::auto")]
	 public int id { get; set; }
	 [Description (nick="@street")]
	 public string street { get; set; }
	 [Description (nick="@client::id")]
	 public int client { get; set; }
	 construct {
		 database_table_name = "address";
	 }
 }
 public class Addresses : Object, Vda.DataCollection {
	 private string _parent_property;
	 private DataObject _parent;
	 private GLib.Type _object_type;
	 private string _ref_field;

	 public Vda.Connection database_connection { get; set; }
	 public string parent_property { get { return _parent_property; } }
	 public DataObject parent { get { return _parent; } }
	 public GLib.Type object_type { get { return _object_type; } }
	 public string ref_field{ get { return _ref_field; } }
	 public Cancellable cancellable { get; set; }

	 construct	{
		 _parent_property = "id";
		 _ref_field = "client";
		 _object_type = typeof (Address);
	 }

	 public Addresses (Client client) {
		 _parent = client;
	 }
 }

 public class Client : Object, Vda.DataObject {
	 Vda.Connection _cnc = null;
	 // DataObject
	 public string database_table_name { get; construct set; }
	 public Vda.Connection database_connection {
		 get {
			 return _cnc;
		 }
		 set {
			 _cnc = value;
			 addresses.database_connection = _cnc;
		 }
	 }
	 public Cancellable cancellable { get; set; }

	 // Database mapping
	[Description (nick="@id::pkey::auto")]
	 public int id { get; set; }
	 [Description (nick="@name")]
	 public string name { get; set; }
	 [Description (nick="@description")]
	 public string description { get; set; }
	 [Description (nick="@phone::id")]
	 public string phone { get; set; }
	 public Addresses addresses { get; set; }

	 construct {
		database_table_name = "clients";
		 addresses = new Addresses (this);
	 }
 }

Using the above code a query, by accessing the Addresses object, you can call get_objects and a the following query will be executed:

SELECT * FROM address WHERE address.client = 100;

Above number 100, is calculated from the current instance of Client object's id property.