[jira] Closed: (IBATISNET-263) Support for circular reference

["Gilles Bayon (JIRA)" <ib...@incubator.apache.org>]

     [ https://issues.apache.org/jira/browse/IBATISNET-263?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gilles Bayon closed IBATISNET-263.
----------------------------------

    Resolution: Fixed

in SVN

> Support for circular reference
> ------------------------------
>
>                 Key: IBATISNET-263
>                 URL: https://issues.apache.org/jira/browse/IBATISNET-263
>             Project: iBatis for .NET
>          Issue Type: Improvement
>          Components: DataMapper
>    Affects Versions: DataMapper 3.0
>            Reporter: Gilles Bayon
>            Assignee: Gilles Bayon
>            Priority: Minor
>             Fix For: DataMapper 3.0
>
>
> To avoid creation of new Instance of the same object during an ibatis request, add the 'keys' attribute on resultMap tag to specify the properties identifiers
> public class Order
> {
> 	public Account {get;set}
> 	...
> }
> <resultMap id="account-constructor-circular" keys="identifiant"  class="Account" >
> 	<constructor>
> 		<argument argumentName="identifiant"	column="Account_ID"/>
> 		<argument argumentName="firstName"    column="Account_FirstName"/>
> 		<argument argumentName="lastName"     column="Account_LastName"/>
> 	</constructor>
> </resultMap>
> <resultMap id="order-result-circular" extends="base-order-result" class="Order">
> 	<result property="Account" resultMapping="Account.account-constructor-circular"/>
> </resultMap>
> <select id="GetOrderWithAcccount" resultMap="order-result-circular" >
>   SELECT
>   *
>   FROM
>   Orders o
>   JOIN
>   Accounts a
>   ON
>   o.Account_Id = A.Account_Id
> </select>
> List<Order> list = (List<Order>)dataMapper.QueryForList<Order>("GetOrderWithAcccount", null);
> Account account1 = list.Find(delegate(Order order) { return order.Id==1; }).Account;
> Account account2 = list.Find(delegate(Order order) { return order.Id == 10; }).Account;
> Assert.That(account1, Is.SameAs(account2));

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