[IBATISNET-300] In nested mappings property with GroupBy strategy must be collection

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: DataMapper 1.6.2, DataMapper 3.0
• Component/s: DataMapper
• Assignee: Unassigned
• Reporter: Vasiliy Lukin
• Created: 01/Feb/10 05:59
• Updated: 01/Feb/10 06:18

Description

public class LineItem
{
public int Id
}

public class Product

{ public int Id public IList Items }

class Category
{
public int Id;
public Product Product; //this property is not a IList!
}

<resultMap id="Item-Result" class="Item">
<result property="Id" column="Item_Id" />
<result property="UnitCost" column="Item_UnitCost" />
<result property="Status" column="Item_Status" />
</resultMap>

<resultMap id="Product-Result" class="Product" groupBy="Id">
<result property="Id" column="Product_Id"/>
<result property="Name" column="Product_Name"/>
<result property="Items" resultMapping="GroupByMapping.Item-Result"/>
</resultMap>

<resultMap id="Category-Result-One-Product" class="Category" groupBy="Id">
<result property="Id" column="Category_Id"/>
<result property="Name" column="Category_Name"/>
<result property="Product" resultMapping="GroupByMapping.Product-Result"/>
</resultMap>

in file IBatisNet.DataMapper.MappedStatements.PropertStrategy.GroupByStrategy throws NullReferenceException