private static void CompareEnumarableItemObject(IEnumerable sourceObject, IEnumerable targetObject,
ObjectCompareResultCollection updated, ObjectCompareResultCollection addOrDeleted,
Func <ObjectCompareInfo, object, object, ObjectCompareResult> createItemResult)
{
if (sourceObject != null)
{
foreach (object sourceValue in sourceObject)
{
if (sourceValue != null)
{
ObjectCompareInfo compareInfo = sourceValue.GetType().GetCompareInfo();
string[] compareKeyFields = compareInfo.GetCompareKeyFields();
object targetValue = targetObject.FirstOrDefault <object>(t => IsSameCompareKey(compareInfo.GetCompareKeyFields(), sourceValue, t));
ObjectCompareResult itemResult = createItemResult(compareInfo, sourceValue, targetValue);
if (itemResult.AreDifferent)
{
ObjectCompareResultCollection resultCollection = GetCollectionByCompareValues(sourceValue, targetValue, updated, addOrDeleted);
if (resultCollection != null)
{
resultCollection.Add(itemResult);
}
}
}
}
}
}
/// <summary>
/// 根据比较前后的对象决定使用哪个集合
/// </summary>
/// <param name="sourceValue"></param>
/// <param name="targetValue"></param>
/// <param name="updated"></param>
/// <param name="addOrDeleted"></param>
/// <returns></returns>
private static ObjectCompareResultCollection GetCollectionByCompareValues(object sourceValue, object targetValue,
ObjectCompareResultCollection updated, ObjectCompareResultCollection addOrDeleted)
{
ObjectCompareResultCollection result = updated;
if (sourceValue == null && targetValue != null) //没有原对象,Add
{
result = addOrDeleted;
}
else if (targetValue == null && sourceValue != null) //没有新对象,Delete
{
result = addOrDeleted;
}
return(result);
}