What is the recommended way to generate a zero-based index for an
IList mapping?
<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
assembly="Domain" namespace="Domain" >
<class name="ProductLine" table="ProductLine">
<id name="Id" column="Id" type="int">
<generator class="native">
</generator>
</id>
<property name="SortIdx" column="SortIdx" not-null="true"></
property>
<list name="TrafficLineList" table="TrafficLine"
cascade="all-delete-
orphan" lazy="true" inverse="true">
<key column="ProductLineId" />
<list-index column="SortIdx"></list-index>
<one-to-many class="TrafficLine" />
</list>
</class>
</hibernate-mapping>
Here is the method that adds the child:
private IList<TrafficLine> _trafficLineList;
public virtual void AddTrafficLineItem(TrafficLine line)
{
line.SortIdx = _trafficLineList.Count;
_trafficLineList.Add(line);
}
As you can see above I am simply using the non-zero-based Count
property on the list. Since the index is zero-based and Count is not,
I assign the Count before adding it to the list. Any advice on the
recommended approach please.
BTW, what is the difference between <list-index> and <index>?
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