/// <summary>
/// 對指定計算式策略所需參數的對象實例化
/// </summary>
/// <param name="topicIdentifier">題型種類</param>
/// <param name="topicNumber">參數識別ID</param>
/// <returns>對象實例</returns>
public virtual TopicParameterBase CreateTopicParameterInstance(string topicIdentifier, string topicNumber)
{
// 參數對象緩存區管理
string key = $"{topicIdentifier}::{topicNumber}";
Lazy <TopicParameterBase, ITogicMetaDataView> lazyParameter = ParameterCache.GetOrAdd(key, (o) =>
{
// 注入運算符參數對象（題型與參數是一對一關係）
IEnumerable <Lazy <TopicParameterBase, ITogicMetaDataView> > parameters = _composer.GetExports <TopicParameterBase, ITogicMetaDataView>();
if (!parameters.Any())
{
// 指定的題型參數對象未找到
throw new TopicNotFoundException(MessageUtil.GetMessage(() => MsgResources.E0019L, topicIdentifier));
}
LogUtil.LogDebug(MessageUtil.GetMessage(() => MsgResources.I0004L));
return(parameters.First());
});
// 參數類實例化
TopicParameterBase paramater = lazyParameter.Value;
// 通用參數初期化處理（依據Provider配置）
paramater.InitParameterBase(key);
// 派生類參數初期化（各子類實現）
paramater.InitParameter();
LogUtil.LogDebug(MessageUtil.GetMessage(() => MsgResources.I0005L, key));
return(paramater);
}
/// <summary>
/// 策略作成
/// </summary>
/// <param name="param">参数对象</param>
public virtual void Build(TopicParameterBase param)
{
Guard.ArgumentNotNull(param, "param");
if (!typeof(T).IsAssignableFrom(param.GetType()))
{
throw CreateInvalidParameterException(typeof(T));
}
var p = (T)param;
PreMarkFormulaList(p);
try
{
MarkFormulaList(p);
}
catch
{
throw;
}
finally
{
PostMarkFormulaList(p);
}
}
/// <summary>
///
/// </summary>
/// <param name="topicIdentifier">題型識別ID</param>
/// <param name="topicNumber">參數編號（如果沒有指定參數編號，則默認返回當前參數序列的第一個參數項目）</param>
/// <returns></returns>
public TopicParameterBase Structure(string topicIdentifier, string topicNumber)
{
// 題型實例
ITopic instance = TopicFactory.CreateTopicInstance(topicIdentifier);
// 計算式所需參數
TopicParameterBase parameter = TopicFactory.CreateTopicParameterInstance(topicIdentifier, topicNumber);
LogUtil.LogDebug(MessageUtil.GetMessage(() => MsgResources.I0006L));
// 根據參數構建題型
instance.Build(parameter);
LogUtil.LogDebug(MessageUtil.GetMessage(() => MsgResources.I0007L));
return(parameter);
}
/// <summary>
/// 參數初期化處理
/// </summary>
/// <param name="topicArgumentsIdentifier">題型參數識別ID</param>
internal void InitParameterBase(string topicArgumentsIdentifier)
{
// 參數配置json注入parameter
TopicParameterBase parameter = helper.CreateParameterProvider().Initialize(topicArgumentsIdentifier, out Dictionary <string, string> replenishArgument);
// 補充參數設定
SetReplenishArgument(replenishArgument);
QuestionType = parameter.QuestionType;
Signs = parameter.Signs;
FourOperationsType = parameter.FourOperationsType;
MaximumLimit = parameter.MaximumLimit;
NumberOfQuestions = parameter.NumberOfQuestions;
Reserve = parameter.Reserve;
LeftScope = parameter.LeftScope;
RightScope = parameter.RightScope;
}