protected override int ExecuteUpdate(IDictionary keys, IDictionary values, IDictionary oldValues)
{
Type type = CommonUtils.GetType(this.owner.TypeName);
Check.Require(keys != null && keys.Count == 1, "Only single key field entity is supported.");
IEnumerator en = keys.Keys.GetEnumerator();
en.MoveNext();
object entity = typeof(ReadOnlyActiveRecord<>).MakeGenericType(type).GetMethod("FindById", BindingFlags.Instance | BindingFlags.Public | BindingFlags.Static).Invoke(null, new object[] { keys[en.Current] });
NBearLiteDataSourceEventArgs saveArgs = new NBearLiteDataSourceEventArgs(entity, NBearLiteDataSourceSaveEventName.Update);
if (entity == null)
throw new System.Data.DBConcurrencyException("The underlying data doesn't exist, could not be updated.");
bool changed = false;
foreach (string key in values.Keys)
{
PropertyInfo property = ReflectionUtils.DeepGetProperty(type, key);
if (this.owner.ConflictDetection == ConflictOptions.CompareAllValues)
{
if (property != null && (!CommonUtils.IsEqual(property.GetValue(entity, null), ChangeType(oldValues[key], property.PropertyType), true)))
{
throw new System.Data.DBConcurrencyException("The underlying data has changed.");
}
}
if (object.Equals(values[key], oldValues[key])) continue;
if (property != null && property.CanWrite)
{
changed = true;
property.SetValue(entity, ChangeType(values[key], property.PropertyType), null);
saveArgs.ModifiedFields.Add(key, new KeyValuePair<object,object>(oldValues[key], values[key]));
}
}
if (changed)
{
owner.OnSaving(saveArgs);
if (saveArgs.Cancelled)
{
return 0;
}
entity = saveArgs.Entity;
if (entity == null)
{
return 0;
}
type.GetMethod("Update", Type.EmptyTypes).Invoke(entity, null);
owner.OnSaved(saveArgs);
this.OnDataSourceViewChanged(EventArgs.Empty);
}
return (changed ? 1 : 0);
}
protected override int ExecuteDelete(IDictionary keys, IDictionary oldValues)
{
Type type = CommonUtils.GetType(this.owner.TypeName);
Check.Require(keys != null && keys.Count == 1, "Only single key field entity is supported.");
IEnumerator en = keys.Keys.GetEnumerator();
en.MoveNext();
object entity = typeof(ReadOnlyActiveRecord<>).MakeGenericType(type).GetMethod("FindById", BindingFlags.Instance | BindingFlags.Public | BindingFlags.Static).Invoke(null, new object[] { keys[en.Current] });
//check DBConcurrency
if (this.owner.ConflictDetection == ConflictOptions.CompareAllValues)
{
if (entity == null)
throw new System.Data.DBConcurrencyException("The underlying data doesn't exist, could not be deleted.");
foreach (string key in oldValues.Keys)
{
PropertyInfo property = ReflectionUtils.DeepGetProperty(type, key);
if (property != null && (!CommonUtils.IsEqual(property.GetValue(entity, null), ChangeType(oldValues[key], property.PropertyType), true)))
{
throw new System.Data.DBConcurrencyException("The underlying data has changed.");
}
}
}
NBearLiteDataSourceEventArgs deleteArgs = new NBearLiteDataSourceEventArgs(entity, NBearLiteDataSourceSaveEventName.Delete);
owner.OnDeleting(deleteArgs);
if (deleteArgs.Cancelled)
{
return 0;
}
entity = deleteArgs.Entity;
if (entity == null)
{
return 0;
}
type.GetMethod("Delete", Type.EmptyTypes).Invoke(entity, null);
owner.OnDeleted(deleteArgs);
this.OnDataSourceViewChanged(EventArgs.Empty);
return 1;
}
protected override int ExecuteInsert(IDictionary values)
{
Type type = CommonUtils.GetType(this.owner.TypeName);
object entity = Activator.CreateInstance(type);
NBearLiteDataSourceEventArgs saveArgs = new NBearLiteDataSourceEventArgs(entity, NBearLiteDataSourceSaveEventName.Insert);
foreach (string key in values.Keys)
{
PropertyInfo property = ReflectionUtils.DeepGetProperty(type, key);
if (property != null)
{
property.SetValue(entity, ChangeType(values[key], property.PropertyType), null);
saveArgs.ModifiedFields.Add(key, new KeyValuePair<object, object>(null, values[key]));
}
}
owner.OnSaving(saveArgs);
if (saveArgs.Cancelled)
{
return 0;
}
entity = saveArgs.Entity;
if (entity == null)
{
return 0;
}
type.GetMethod("Create", Type.EmptyTypes).Invoke(entity, null);
owner.OnSaved(saveArgs);
this.OnDataSourceViewChanged(EventArgs.Empty);
return 1;
}
