public void OnReturn(IRetrieveRequestHandler handler)
{
if (Target is null ||
!handler.AllowSelectField(Target) ||
!handler.ShouldSelectField(Target))
{
return;
}
var idField = handler.Row.IdField;
var listHandler = handlerFactory.CreateHandler <IListRequestProcessor>(rowType);
var listRequest = listHandler.CreateRequest();
listRequest.ColumnSelection = ColumnSelection.KeyOnly;
listRequest.IncludeColumns = new HashSet <string>
{
itemKeyField.PropertyName ?? itemKeyField.Name
};
listRequest.Criteria = thisKeyCriteria == new ValueCriteria(idField.AsObject(handler.Row)) & filterCriteria;
IListResponse response = listHandler.Process(handler.Connection, listRequest);
var list = listFactory();
foreach (IRow item in response.Entities)
{
list.Add(itemKeyField.AsObject(item));
}
Target.AsObject(handler.Row, list);
}
public void OnReturn(IRetrieveRequestHandler handler)
{
if (Target is null ||
!handler.AllowSelectField(Target) ||
!handler.ShouldSelectField(Target))
{
return;
}
var listHandler = handlerFactory.CreateHandler <IListRequestProcessor>(rowType);
var listRequest = listHandler.CreateRequest();
listRequest.ColumnSelection = attr.ColumnSelection;
listRequest.IncludeColumns = includeColumns;
listRequest.Criteria = foreignKeyCriteria == new ValueCriteria(masterKeyField.AsObject(handler.Row)) & filterCriteria;
IListResponse response = listHandler.Process(handler.Connection, listRequest);
var list = rowListFactory();
foreach (var item in response.Entities)
{
list.Add(item);
}
Target.AsObject(handler.Row, list);
}
public UpdateHandlerProxy(IDefaultHandlerFactory factory)
{
if (factory is null)
{
throw new ArgumentNullException(nameof(factory));
}
handler = (IUpdateHandler <TRow, TSaveRequest, TSaveResponse>)factory.CreateHandler <ISaveRequestProcessor>(typeof(TRow));
}
private object GetExistingID(IDbConnection connection, RelationInfo info,
object thisKey)
{
var criteria = new Criteria(info.OtherKeyField.PropertyName ?? info.OtherKeyField.Name) ==
new ValueCriteria(thisKey);
if (info.FilterField is object)
{
var flt = new Criteria(info.FilterField.PropertyName ?? info.FilterField.Name);
if (info.FilterValue == null)
{
criteria &= flt.IsNull();
}
else
{
criteria &= flt == new ValueCriteria(info.FilterValue);
}
}
var listHandler = handlerFactory.CreateHandler <IListRequestProcessor>(info.Attr.RowType);
var listRequest = listHandler.CreateRequest();
listRequest.ColumnSelection = ColumnSelection.KeyOnly;
listRequest.Criteria = criteria;
var existing = listHandler.Process(connection, listRequest).Entities;
if (existing.Count > 1)
{
throw new Exception(string.Format("Found multiple extension rows for UpdatableExtension '{0}'",
info.Attr.Alias));
}
if (existing.Count == 0)
{
return(null);
}
return(((IRow)existing[0]).IdField.AsObject((IRow)existing[0]));
}
public static THandler CreateHandler <THandler>(this IDefaultHandlerFactory handlerFactory, Type rowType)
{
return((THandler)handlerFactory.CreateHandler(rowType, typeof(THandler)));
}