/// <summary>
/// 生成一个DeleteCriteria
/// </summary>
/// <param name="classType">需要处理实体对象的Tpye对象</param>
public DeleteCriteria(Type classType)
{
this.ForClass = classType;
this.CriteriaType = CriteriaTypes.Delete;
this._classMap = _broker.GetClassMap(classType.Name);
this._databaseName = this._classMap.Database.Name;
this._IsSaveInMemory = this._classMap.IsSaveToMemory;
}
/// <summary>
/// 生成一个RetrieveCriteria实例
/// </summary>
/// <param name="classType">EntityObject的Type对象</param>
public RetrieveCriteria(Type classType)
{
this._forClass = classType;
this.forClassName = EntityObject.GetClassName(classType);
this._classMap = _broker.GetClassMap(forClassName);
this._databaseName = this._classMap.Database.Name;
this._IsSaveInMemory = this._classMap.IsSaveToMemory;
sTemp = " AS " + _classMap.RelationalDatabase.QuotationMarksStart;
endQuostationMarks = _classMap.RelationalDatabase.QuotationMarksEnd;
}
/// <summary>
/// 根据对象的主键获取唯一对象
/// 注意，这个方法必须与只能通过主键来获取，因为只有主键在逻辑能确定唯一
/// 支持双主键，如果是双主键，则两个主键属性必须都要赋上
/// 如果不能通过主键唯一确定的，则可以通过RetrieveCriteria对象来获取。
/// </summary>
/// <returns></returns>
public bool Retrieve()
{
PersistenceBroker broker = PersistenceBroker.Instance();
this._IsSaveInMemory = broker.GetClassMap(thisType.Name).IsSaveToMemory;
return(broker.RetrieveObject(this, true, false));
}
/// <summary>
/// 使对象实体化,根据IsPersistent决定是更新还是插入操作
/// 如果IsPersistent为True，则自动会进行Update操作，在使用Retrieve()后会自动赋上此值，如：
/// entity.Retrieve();
/// if(entity.IsPersistent)
/// {会进行更新操作}
/// 虽然IsPersistent是public的，但一般的情况下，不建议进行赋值。
/// </summary>
public int Save()
{
PersistenceBroker broker = PersistenceBroker.Instance();
this._IsSaveInMemory = broker.GetClassMap(thisType.Name).IsSaveToMemory;
return(broker.SaveObject(this));
}
