private void BuildPrimitiveExpression(PrimitiveExpression exp, BuildQueryContext ctx)
{
if (exp.Value == null)
{
ctx.Append("NULL");
return;
}
if (exp.Value is IEnumerable list && !(exp.Value is string)) //用于处理In及NotIn的参数
{
ctx.Append("(");
bool first = true;
foreach (var item in list)
{
if (first)
{
first = false;
}
else
{
ctx.Append(",");
}
ctx.AppendFormat("@{0}", ctx.GetParameterName(item));
}
ctx.Append(")");
}