/// <summary>
/// 计算表达式字典
/// </summary>
/// <param name="strFuncName"></param>
/// <param name="arrParams"></param>
/// <param name="calcContext"></param>
/// <returns></returns>
private static object CalculateExpressionDictionary(string strFuncName, ParamObjectCollection arrParams, CalculateContext calcContext)
{
ExpressionDictionaryCollection dictionaries = (ExpressionDictionaryCollection)ObjectContextCache.Instance.GetOrAddNewValue(
"ExpressionDictionaries",
(cache, key) =>
{
ExpressionDictionaryCollection expDicts = new ExpressionDictionaryCollection();
expDicts.InitFromConfiguration(ExpressionDictionarySettings.GetConfig());
cache.Add("ExpressionDictionaries", expDicts);
return(expDicts);
});
ExpressionDictionary dictionary = dictionaries[strFuncName];
object oValue = null;
if (dictionary != null)
{
ExpressionDictionaryCalculatorContext context = new ExpressionDictionaryCalculatorContext(dictionary, calcContext.CallerContxt);
string key = string.Empty;
if (arrParams.Count > 0 && arrParams[0].Value != null)
{
key = arrParams[0].Value.ToString();
}
oValue = dictionary.Calculator.Calculate(strFuncName, key, context);
}
return(oValue);
}
/// <summary>
/// 构造方法
/// </summary>
/// <param name="dictionaryInfo"></param>
/// <param name="callerContext"></param>
internal ExpressionDictionaryCalculatorContext(ExpressionDictionary dictionaryInfo, object callerContext)
{
dictionaryInfo.NullCheck("dictionaryInfo");
this.DictionaryInfo = dictionaryInfo;
this.CallerContext = callerContext;
}
