/// <summary>
/// 检查并懒加载属性的值。
/// </summary>
/// <param name="property"></param>
/// <returns></returns>
private PropertyValue CheckAndLazyPropertyValue(IProperty property)
{
var value = PropertyValue.Empty;
if (InnerEntry.Has(property.Name))
{
value = InnerEntry[property.Name].GetOldValue();
}
return(PropertyValue.IsEmpty(value) ? ProcessSupposedProperty(property) : value);
}
/// <summary>
/// 检查是否有原值相等。
/// </summary>
/// <param name="property"></param>
/// <param name="value"></param>
/// <param name="oldValue"></param>
/// <returns></returns>
private bool CheckValueEquals(IProperty property, PropertyValue value, out PropertyValue oldValue)
{
if (InnerEntry.Has(property.Name) &&
(oldValue = (this as IEntity).GetDirectValue(property)) != null)
{
oldValue.InitializeInstanceName(string.Empty);
return(value == oldValue);
}
oldValue = PropertyValue.Empty;
return(false);
}
PropertyValue IEntity.GetDirectValue(IProperty property)
{
return(InnerEntry.Has(property.Name) ? InnerEntry[property.Name].GetCurrentValue() : PropertyValue.Empty);
}
bool IEntity.IsModified(string propertyName)
{
return(InnerEntry.Has(propertyName) && InnerEntry[propertyName].IsModified);
}
PropertyValue IEntity.GetOldValue(IProperty property)
{
return(InnerEntry.Has(property.Name) ? InnerEntry[property.Name].GetOldValue() : PropertyValue.Empty);
}