/// <summary>
/// Raises the System.Web.UI.Control.Load event.
/// </summary>
/// <param name="e">The System.EventArgs object that contains the event data.</param>
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
// add child controls
if (PrimaryMember != null)
{
this.Controls.Add(PrimaryMember);
}
if (LinkMember != null)
{
this.Controls.Add(LinkMember);
}
if (ReferenceMember != null)
{
this.Controls.Add(ReferenceMember);
}
ILinkedDataSource PrimaryDataSource = PrimaryMember.GetLinkedDataSource();
if (PrimaryDataSource != null)
{
PrimaryDataSource.AfterSelected += new LinkedDataSourceEventHandler(OnAfterSelected);
PrimaryDataSource.AfterInserting += new LinkedDataSourceEventHandler(OnAfterInserting);
PrimaryDataSource.AfterInserted += new LinkedDataSourceEventHandler(OnAfterInserted);
PrimaryDataSource.AfterUpdating += new LinkedDataSourceEventHandler(OnAfterUpdating);
PrimaryDataSource.AfterUpdated += new LinkedDataSourceEventHandler(OnAfterUpdated);
}
}
private void OnAfterSelected(object sender, LinkedDataSourceEventArgs e)
{
if (e.Index == PrimaryMember.EntityIndex)
{
PrimaryMember.CurrentEntity = e.Entity;
PrimaryMember.DeepLoad();
UpdateControl(e.Entity);
}
}
private void OnAfterUpdating(object sender, LinkedDataSourceEventArgs e)
{
if (e.Index == PrimaryMember.EntityIndex)
{
PrimaryMember.CurrentEntity = e.Entity;
PrimaryMember.DeepLoad();
if (PrimaryMember.EnableDeepSave)
{
UpdateRelationships(e.Entity);
}
}
}
/// <summary>
/// Inserts the specified name/value pairs into the
/// relationship defined by the <cref name="ReferenceMember"/> property.
/// </summary>
/// <param name="links">A collection of business objects.</param>
/// <param name="values">A collection of name/value pairs to insert.</param>
protected void InsertReference(IList links, IDictionary values)
{
Object entityKeyValue = PrimaryMember.GetEntityId();
// delayed insert
if (ReferenceMember.HasDataSource && entityKeyValue == null)
{
ReferenceMember.Inserts.Add(values);
}
else
{
Insert(ReferenceMember, links, values, true);
}
}
/// <summary>
/// Inserts any previously cached business object references.
/// </summary>
/// <param name="member">The relationship member.</param>
private void Insert(EntityRelationshipMember member)
{
if (member != null && member.HasDataSource)
{
Object entityKeyValue = PrimaryMember.GetEntityId();
foreach (IDictionary values in member.Inserts)
{
values[member.EntityKeyName] = entityKeyValue;
member.GetLinkedDataSource().Insert(values);
}
member.Inserts.Clear();
}
}
/// <summary>
/// Inserts the specified <paramref name="foreignKeyValue"/> into the
/// collection of business objects.
/// </summary>
/// <param name="links">A collection of business objects.</param>
/// <param name="foreignKeyValue">The value to insert.</param>
protected void InsertLink(IList links, Object foreignKeyValue)
{
// make sure link doesn't exist
Object link = EntityUtil.GetEntity(links, LinkMember.ForeignKeyName, foreignKeyValue);
if (link == null)
{
Object entityKeyValue = PrimaryMember.GetEntityId();
IDictionary values = new Hashtable();
values.Add(LinkMember.EntityKeyName, entityKeyValue);
values.Add(LinkMember.ForeignKeyName, foreignKeyValue);
// delayed insert
if (LinkMember.HasDataSource && entityKeyValue == null)
{
LinkMember.Inserts.Add(values);
}
else
{
Insert(LinkMember, links, values);
}
}
}