/// <summary>
/// 复制对象
/// </summary>
/// <returns></returns>
public new ManyToObjectClassType Clone()
{
ManyToObjectClassType obj = new ManyToObjectClassType();
obj.Property = Property;
obj.ClassName = ClassName;
obj.KindColumn = KindColumn;
obj.LinkedObjects = new Collection <LinkedObject>();
foreach (LinkedObject link in LinkedObjects)
{
obj.LinkedObjects.Add(link.Clone());
}
return(obj);
}
private static void SetColumnValueFromLinkObject(DataRow targetRow, object obj, PropertyInfo[] properties, ManyToObjectClassType objClass, Dictionary <string, string> colMaps)
{
object linkObj = GetPropertyValue(obj, properties, objClass.Property);
if (linkObj == null)
{
return;
}
Type objType = linkObj.GetType();
foreach (LinkedObject link in objClass.LinkedObjects)
{
if (link.ClassName == CastClassNameFromFullName(objType.FullName))
{
Collection <ColumnToColumn> newMaps;
if ((colMaps != null) && (colMaps.Count > 0))
{
newMaps = new Collection <ColumnToColumn>();
ColumnToColumn newCol2Col;
foreach (ColumnToColumn colMap in link.ColumnToColumns)
{
newCol2Col = new ColumnToColumn();
newCol2Col.TargetColumn = colMap.TargetColumn;
if (colMaps.ContainsKey(colMap.SourceColumn))
{
newCol2Col.SourceColumn = colMaps[colMap.SourceColumn];
}
else
{
newCol2Col.SourceColumn = colMap.SourceColumn;
}
newMaps.Add(newCol2Col);
}
}
else
{
newMaps = link.ColumnToColumns;
}
SetDataRowValueFromObject(targetRow, linkObj, newMaps);
}
}
}
/// <summary>
/// 二次修改 TYR Catch
/// add by ywk 2013年3月13日10:22:29
/// </summary>
/// <param name="obj"></param>
/// <param name="properties"></param>
/// <param name="sourceRow"></param>
/// <param name="objClass"></param>
/// <param name="colMaps"></param>
private static void SetPropertyValueOfLinkObject(object obj, PropertyInfo[] properties, DataRow sourceRow, ManyToObjectClassType objClass, Dictionary <string, ColumnToColumn> colMaps)
{
try
{
// 使用类名或用工厂类取得实际的类名
string className;
if (String.IsNullOrEmpty(objClass.KindColumn))
{
className = objClass.ClassName;
}
else
{
throw new ArgumentException(MessageStringManager.GetString("ClassNotImplement"));
}
object newObj = null;
// 某些情况下在同一张表中用相同的字段保存不同情况下的数据，然后用某个标志位进行判断当前的数据表示何种情况。
// 在映射到对象时，每种情况都可能是一种单独的类。所以在配置中会将列和不同对象进行映射的关系都给出，由标志字段的值来决定取哪一种配置。
foreach (LinkedObject linkObj in objClass.LinkedObjects)
{
if ((String.IsNullOrEmpty(className)) || (linkObj.ClassName == className))
{
// 有可能存在级联的情况(表的一组列关联到Link对象，而Link对象中的部分字段又关联到另外的对象)
// ，所以要得到最终的原始列和关联列的关系( a -> b, b -> c ==> a -> c)
Collection <ColumnToColumn> newMaps;
if ((colMaps != null) && (colMaps.Count > 0))
{
newMaps = new Collection <ColumnToColumn>();
ColumnToColumn newCol2Col;
foreach (ColumnToColumn linkColMap in linkObj.ColumnToColumns)
{
newCol2Col = new ColumnToColumn();
newCol2Col.TargetColumn = linkColMap.TargetColumn;// 第三个表的列名
if (colMaps.ContainsKey(linkColMap.SourceColumn))
{
newCol2Col.SourceColumn = colMaps[linkColMap.SourceColumn].SourceColumn;
newCol2Col.DefaultValue = colMaps[linkColMap.SourceColumn].DefaultValue;
}
else if (!String.IsNullOrEmpty(linkColMap.DefaultValue))
{
// 中间断开了，则表示不能建立级联关系
newCol2Col.SourceColumn = ""; // linkColMap.SourceColumn;
newCol2Col.DefaultValue = linkColMap.DefaultValue;
}
else
{
continue;
}
newMaps.Add(newCol2Col);
}
}
else
{
newMaps = linkObj.ColumnToColumns;
}
newObj = CreateAndIntializeObject(linkObj.ClassName, sourceRow, newMaps);
break;
}
}
SetPropertyValue(obj, properties, newObj, objClass.Property);
}
catch (Exception ex)
{
//MessageBox.Show("SetPropertyValueOfLinkObject方法出错" + ex.Message);
}
}