public DynvokeMethod PrepTarget(string classname, string methodname, ParamProvider provider)
{
DynvokeMethod method = Get(classname, methodname);
if (method == null)
{
return(null);
}
foreach (KeyValuePair <string, Type> entry in method.Parameters)
{
object value = null;
if (provider.TryGetParam(entry.Key, entry.Value, out value))
{
if (ParamReplacersExternal.ContainsKey(entry.Key) && ParamReplacersExternal[entry.Key].ExternalType == entry.Value)
{
ParamReplacmentContainer replCont = ParamReplacersExternal[entry.Key];
object newvalue = replCont.Replacer(value);
Log.Debug(" Replacement: [" + replCont.InternalParamName + "] = (" + replCont.InternalType + ") [" + newvalue + "]");
method.SetParameter(replCont.InternalParamName, newvalue);
}
else
{
Log.Debug(" Parameter: [" + entry.Key + "] = (" + entry.Value + ") [" + value + "]");
method.SetParameter(entry.Key, value);
}
}
}
foreach (KeyValuePair <string, Type> entry in method.InjectedParameters)
{
object value = null;
if (ParamInjectors.ContainsKey(entry.Key) && ParamInjectors[entry.Key].Type == entry.Value)
{
ParamInjectionContainer injCont = ParamInjectors[entry.Key];
value = injCont.Injector();
Log.Debug(" Injected: [" + entry.Key + "] = (" + entry.Value + ") [" + value + "]");
method.SetParameter(entry.Key, value);
}
}
return(method);
}
private static CommandCacheItem CreateCacheItem(string sql, CommandType commandType, object param)
{
if (param == null || string.IsNullOrEmpty(sql))
{
return new CommandCacheItem {
Sql = sql, Params = NullParamProvider
}
}
;
// 参数可包含在属性或字段中，两种都要获取
var paramType = param.GetType();
var members = paramType
.GetFields(BindingFlags.Instance | BindingFlags.Public)
.Cast <MemberInfo>()
.ToDictionary(x => x.Name, x => x);
var props = paramType.GetProperties(BindingFlags.Instance | BindingFlags.Public);
foreach (var prop in props)
{
members.Add(prop.Name, prop);
}
var paramProvider = new ParamProvider();
if (commandType == CommandType.Text)
{
var patter = "[@:][a-zA-Z0-9_]+";
var matches = Regex.Matches(sql, patter);
var existNames = new HashSet <string>();
foreach (Match match in matches)
{
var name = match.Value.Substring(1);
// 避免重复处理
if (!existNames.Add(name))
{
continue;
}
MemberInfo member;
if (!members.TryGetValue(name, out member))
{
continue;
}
paramProvider.AddDbParameterInfo(name, member);
}
}
else
{
foreach (var member in members)
{
paramProvider.AddDbParameterInfo(member.Key, member.Value);
}
}
return(new CommandCacheItem
{
Sql = sql,
Params = paramProvider.GenerateParameters
});
}
