public void DoRemove(TEntity childEntity, bool referenceOnly = true)
{
string key = EntityTableHelper <TEntity> .RetriveKey(childEntity).ToString();
var proxyInfo = childEntity as IEntityProxyInfo;
if (foreignKeyMap == null)
{
foreignKeyMap = new Dictionary <Guid, object>();
}
foreignKeyMap.Remove(proxyInfo.Proxy.Row.InternalId);
if (!referenceOnly)
{
var foreignTableProxy = new EntityTableProxy <TEntity>(proxyInfo.Proxy.Row.Table, this.SourceProvider);
foreignTableProxy.Remove(childEntity);
}
//int idx = this.EntityRelation.Keys.IndexOf(key);
if (this.EntityRelation.Keys.Remove(key))
{
// UpdateContent();
//NotifyCollectionChangedAction.Remove會當,原因不明
//NotifyCollectionChangedEventArgs e = new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, childEntity, idx);
// NotifyCollectionChangedEventArgs e = new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset);
// OnCollectionChanged(e);
//FireResetNotifyCollection();
UpdateContent();
}
}
public bool TryGetForeignTable(out EntityTableProxy <TEntity> foreignTableProxy)
{
foreignTableProxy = null;
EntityTable foreignTable;
if (TryGetForeignTable(out foreignTable))
{
foreignTableProxy = new EntityTableProxy <TEntity>(foreignTable, this.SourceProvider);
return(true);
}
return(false);
}
static public EntityTable GenEntitySchema(EntityTable srcTbl)
{
var schemaTable = CreateEntitySchema();
schemaTable.Namespace = srcTbl.Namespace;
schemaTable.TableName = srcTbl.TableName;
var schemaTableProxy = new EntityTableProxy <IEntitySchema>(schemaTable);
foreach (var column in srcTbl.Columns)
{
var colDef = schemaTableProxy.Append();
column.CopyTo(colDef);
//attris.Status = OPStatus.Steady;//在此代表此column為舊有非新增的
}
return(schemaTable);
}
static public EntityTable CreateEntitySchema(bool genDefaultKey = false)
{
var schema = EntityTableHelper <IEntitySchema> .CreateDataTable();
schema.Columns["DataType"].DefaultValue = typeof(string).FullName;
schema.Columns["FieldType"].DefaultValue = EntityFieldType.Var.ToString();
if (genDefaultKey == true)
{
var tblProxy = new EntityTableProxy <IEntitySchema>(schema);
var colDef = tblProxy.Append();
colDef.Unique = true;
colDef.KeyGen = "id_{0}";
colDef.ColumnName = "Id";
schema.TableName = "";
}
return(schema);
}
static public bool TryGetTable <TEntity>(this IEntityTableSource it, out EntityTableProxy <TEntity> tableProxy, string ns, string tableName, params string[] keys)
{
var selectCond = new EntityRelation(ns, tableName, keys);
return(it.TryGetTable(selectCond, out tableProxy));
}