public string IsNullOrEmpty(CRLExpression.MethodCallObj methodInfo, ref int parIndex, AddParameHandler addParame)
{
var field = methodInfo.MemberQueryName;
var isNot = methodInfo.ExpressionType == ExpressionType.Not;
var notStr = dBAdapter.IsNotFormat(isNot);
var result = string.Format("({0} {1} null {3} {0}{2}'')", field, notStr, isNot ? "!=" : "=", isNot ? "and" : "or");
return(result);
}
CRLExpression.CRLExpression DealParame(CRLExpression.CRLExpression par1, string typeStr)
{
var par = par1.Data + "";
//typeStr2 = typeStr;
//todo 非关系型数据库不参数化
if (dbContext.DataBaseArchitecture == DataBaseArchitecture.NotRelation)
{
return(par1);
}
if (parIndex > 1000)
{
throw new CRLException("参数计数超过了1000,请确认数据访问对象没有被静态化");
}
switch (par1.Type)
{
case CRLExpression.CRLExpressionType.Value:
#region value
if (par1.Data == null)
{
par = __DBAdapter.IsNotFormat(typeStr != "=") + "null";
}
else
{
QueryParames.Add("par" + parIndex, par);
par = "@par" + parIndex;
parIndex += 1;
}
#endregion
break;
case CRLExpression.CRLExpressionType.MethodCall:
#region method
var method = par1.Data as CRLExpression.MethodCallObj;
var dic = MethodAnalyze.GetMethos(__DBAdapter);
if (!dic.ContainsKey(method.MethodName))
{
throw new CRLException("LambdaQuery不支持扩展方法" + method.MemberQueryName + "." + method.MethodName);
}
int newParIndex = parIndex;
par = dic[method.MethodName](method, ref newParIndex, AddParame);
parIndex = newParIndex;
#endregion
break;
}
par1.DataParamed = par;
return(par1);
}