//----------------------------------------------------------
private void Load(DataTable table, TMetaEntity me)
{
TMetaTable mt = me.MetaTable;
if (table.Rows.Count == 0)
{
if (mt.InheritMappingType == TInheritMappingType.TablePerConcreteClass)
{
throw new TFetchNoneException(this.GetType().ToString() + " Fetch None");
}
}
if (table.Rows.Count == 1)
{
Load(table.Rows[0], me);
}
else if (table.Rows.Count > 1)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < table.Rows.Count; i++)
{
sb.AppendLine(table.Rows[i]["ID"].ToString());
}
throw new TFetchMoreException(String.Format("{0}--Fetch More than one row{1}{2}", GetType(), Environment.NewLine, sb));
}
}
//----------------------------------------------------------
// 分表储存
private void SaveTablePerSubClass()
{
Type t2 = this.GetType();
while (t2 != typeof(CEntity))
{
TMetaEntity meta2 = GetMetaEntity(t2);
TMetaTable mt2 = meta2.MetaTable;
TInheritMappingType inheritType = mt2.InheritMappingType;
try
{
// PerConcrete与PerSubClass同样都调用函数Save(meta)
// 在此函数中，去进一步区分MappingType
// NG
Save(meta2);
}
catch (TDataSilentlyChangedException e2)
{
string trace = TEntityConcurrencyTrace.Trace(this, meta2);
SimpleLog.Write(trace);
SimpleLog.Write(e2);
throw e2;
}
t2 = t2.BaseType;
}
}
//----------------------------------------------------------
public virtual void Assign(TMetaEntity me, CEntity rhs)
{
TMetaTable mt = me.MetaTable;
TInheritMappingType inheritType = mt.InheritMappingType;
TMetaColumnCollection mcs = null;
if (inheritType == TInheritMappingType.TablePerConcreteClass)
{
mcs = mt.FullValueColumns;
}
else
if (inheritType == TInheritMappingType.TablePerSubClass)
{
mcs = mt.ValueColumns;
}
CEntity that = rhs as CEntity;
foreach (TMetaColumn mc in mcs)
{
//if (!cm.IsAssign)
// continue;
if (mc.MemberName == "Captions.Cn (Assign)")
{
System.Diagnostics.Debug.WriteLine(mc.MemberName);
}
object v2 = that.GetEpoPropertyValue(mc);
this.SetEpoPorpertyValue(mc, v2);
}
}
//--------------------------------------------------------------
public bool Equals(Type t, object rhs)
{
if (rhs == null)
{
return(false);
}
if (object.ReferenceEquals(this, rhs))
{
return(true);
}
if (this.GetType() != rhs.GetType())
{
return(false);
}
CEntity that = rhs as CEntity;
if (that == null)
{
return(false);
}
TMetaEntity meta = TMetaRegistry.Default.GetMeta(t);
TMetaTable mt = meta.MetaTable;
TInheritMappingType inheritType = mt.InheritMappingType;
TMetaColumnCollection mcs = null;
if (inheritType == TInheritMappingType.TablePerConcreteClass)
{
mcs = mt.FullValueColumns;
}
else if (inheritType == TInheritMappingType.TablePerSubClass)
{
mcs = mt.ValueColumns;
}
bool b = true;
foreach (TMetaColumn mc in mcs)
{
//if (!cm.IsCompare)
// continue;
if (mc.MemberName == "Captions.Cn (Equal)")
{
System.Diagnostics.Debug.WriteLine(mc.MemberName);
}
object v1 = this.GetEpoPropertyValue(mc);
object v2 = that.GetEpoPropertyValue(mc);
b = b && (object.Equals(v1, v2));
}
b = b && (PersistState == that.PersistState);
return(b);
}
//---------------------------------------------------------------------
public virtual void Push(DataRow row, TMetaEntity me)
{
TMetaTable mt = me.MetaTable;
TInheritMappingType inheritType = me.MetaTable.InheritMappingType;
if (inheritType == TInheritMappingType.TablePerConcreteClass)
{
Push(row, mt.FullValueColumns);
}
else if (inheritType == TInheritMappingType.TablePerSubClass)
{
Push(row, mt.ValueColumns);
}
}
//---------------------------------------------------------------------
private void SaveColumnsBrutally(TMetaEntity me)
{
TMetaTable mt = me.MetaTable;
CDataAccess access = Context.GetDataAccess(me);
access.Context = this.Context;
string tableName = mt.TableName;
foreach (TMetaColumn mc in mt.Columns)
{
if (!mc.IsBrutallySave)
{
continue;
}
object v = GetEpoPropertyValue(mc);
string strValue = null;
switch (mc.DataType)
{
case TDataType.Int32:
case TDataType.Int64:
case TDataType.Int16:
case TDataType.Decimal:
strValue = v.ToString();
break;
case TDataType.String:
strValue = String.Format("'{0}'", v);
break;
case TDataType.DateTime:
strValue = String.Format("'{0}'", v);
break;
default:
strValue = v.ToString();
break;
}
string cmdText = String.Format("Update {0} set {1}={2} where ID='{3}'", mt.TableName, mc.ColumnName, strValue, Id);
access.ExecuteNonQuery(cmdText);
}
}
//----------------------------------------------------------
public virtual void InitMembers()
{
TMetaEntity me = GetMetaEntity(this.GetType());
if (me == null)
{
return;
}
TMetaTable mt = me.MetaTable;
foreach (TMetaColumn mc in mt.FullValueColumns)
{
TDataType dataType = mc.DataType;
if (dataType == TDataType.DateTime || dataType == TDataType.Date)
{
object nullValue = TConvert.GetNullValue(dataType);
this.SetEpoPorpertyValue(mc, nullValue);
}
}
}
////----------------------------------------------------------
// 不支持继承
//public virtual void Load(string id)
//{
// DataTable dataTable = DataAccess.SelectById(id);
// Load(dataTable);
//}
//----------------------------------------------------------
// 支持继承
public virtual void Load(string id)
{
BeforeLoad();
Type t2 = this.GetType();
while (t2 != typeof(CEntity))
{
TMetaEntity me2 = GetMetaEntity(t2);
TMetaTable mt2 = me2.MetaTable;
TInheritMappingType inheritType = mt2.InheritMappingType;
///单表继承--单表存贮
if (inheritType == TInheritMappingType.TablePerConcreteClass)
{
Load(id, me2);
if (IsBakMode)
{
AcceptChanges(me2);
}
break;
}
/// 多表继承--分表存贮
else if (inheritType == TInheritMappingType.TablePerSubClass)
{
Load(id, me2);
if (IsBakMode)
{
AcceptChanges(me2);
}
t2 = t2.BaseType;
}
}
PersistState = TPersistState.Opened;
AfterLoad();
}
//----------------------------------------------------------
public virtual void Load(int no)
{
//throw new Exception("The method is not implemented.");
BeforeLoad();
Type t2 = this.GetType();
while (t2 != typeof(CEntity))
{
TMetaEntity me2 = GetMetaEntity(t2);
TMetaTable mt2 = me2.MetaTable;
TInheritMappingType inheritType = mt2.InheritMappingType;
///单表继承--单表存贮
if (inheritType == TInheritMappingType.TablePerConcreteClass)
{
Load(no, me2);
if (IsBakMode)
{
AcceptChanges(me2);
}
break;
}
/// 多表继承--分表存贮
else if (inheritType == TInheritMappingType.TablePerSubClass)
{
Load(no, me2);
if (IsBakMode)
{
AcceptChanges(me2);
}
t2 = t2.BaseType;
}
}
PersistState = TPersistState.Opened;
AfterLoad();
}
//----------------------------------------------------------
public void Save(TMetaEntity me)
{
// PerConcrete与PerSubClass同样都调用函数Save(meta)
// 在此函数中，去进一步区分MappingType
// NG
/// 注意，Meta分级存贮。分表时要补Id
TracSave(me);
CDataAccess access = Context.GetDataAccess(me);
access.Context = this.Context;
TMetaTable mt = me.MetaTable;
TDataTable table = Context.CreateDataTable(mt);
TDataRow row = table.CreateDataRow();
if (PersistState == TPersistState.Added)
{
//FillRow(me, row, this);
this.Push(row, me);
table.Rows.Add(row);
access.InsertRow(table);
AcceptChanges(me);
}
else if (PersistState == TPersistState.Opened || PersistState == TPersistState.Modified)
{
if (me.MetaTable.InheritMappingType == TInheritMappingType.TablePerSubClass)
{
if (!access.ExistId(Id))
{
//FillRow(me, row, this);
this.Push(row, me);
table.Rows.Add(row);
access.InsertRow(table);
AcceptChanges(me);
return;
}
}
if (IsBakMode)
{
//FillRow(me, row, this.Bak1);
this.Bak1.Push(row, me);
table.Rows.Add(row);
row.AcceptChanges();
}
//FillRow(me, row, this);
this.Push(row, me);
access.EditRow(table);
SaveColumnsBrutally(me); ///
AcceptChanges(me);
}
else if (PersistState == TPersistState.MarkDeleted)
{
//FillRow(me, row, this.Bak1);
this.Bak1.Push(row, me);
table.Rows.Add(row);
row.AcceptChanges();
row.Delete();
access.Delete(table);
AcceptChanges(me);
}
}
