/// <summary>
/// 获取未填充数据的数据库执行信息
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
private SqlCommandDescription GetSqlCommandDescriptionWithourParameterFilled(SqlCommandGenerateContext context)
{
SqlCommandDescription description;
switch (context.CommandInfo.Type)
{
case CommandInfoTypes.Delete:
description = GenerateDelete(context);
description.Mode = SqlCommandExecuteModes.Execute;
break;
case CommandInfoTypes.Update:
description = GenerateUpdate(context);
description.Mode = SqlCommandExecuteModes.Execute;
break;
case CommandInfoTypes.Select:
description = GenerateSelect(context);
description.Mode = SqlCommandExecuteModes.Query;
break;
case CommandInfoTypes.Insert:
description = GenerateInsert(context);
description.Mode = SqlCommandExecuteModes.Query;
break;
case CommandInfoTypes.Count:
description = GenerateCount(context);
description.Mode = SqlCommandExecuteModes.Query;
break;
default: throw new NotImplementedException($"不能处理的命令类型 : {context.CommandInfo.Type.ToString()}");
}
return(description);
}
public SqlCommandDescription Generate(MethodInfo methodInfo, object[] arguments)
{
var context = SqlCommandGenerateContext.Create()
.SetMethod(methodInfo)
.Build();
string cacheKey = $"SqlCOmmandDescription_{context.ToString()}";
SqlCommandDescription description = cache.GetOrCreate <SqlCommandDescription>(cacheKey, key =>
{
if (context.HasAnyQueryAttribute)
{
return(GetDescriptionByQuery(context));
}
else
{
return(GetSqlCommandDescriptionWithourParameterFilled(context));
}
});
if (arguments != null && arguments.Length != 0)
{
ParameterLookupContext lookupContet
= new ParameterLookupContext
(
this,
description,
methodInfo,
arguments
);
this.parameterLookupFactory.Lookup(lookupContet);
}
return(description);
}
/// <summary>
/// 根据 <see cref="QueryAttribute"/> 获取数据库执行信息
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
private SqlCommandDescription GetDescriptionByQuery(SqlCommandGenerateContext context)
{
string querySelector = NpiConfig.QuerySelector;
IEnumerable <SqlAttribute> queryAttributes = context.QueryAttributes.Where(x => x.Selector == querySelector);
if (queryAttributes.Count() > 1)
{
throw new ApplicationException("匹配到多个 QueryAttribute");
}
SqlAttribute queryAttribute = queryAttributes.FirstOrDefault();
SqlCommandDescription description = new SqlCommandDescription()
{
SqlCommand = queryAttribute.Sql,
Mode = queryAttribute.Mode
};
foreach (var ps in this.sqlParameterFinder.Find(queryAttribute.Sql))
{
description.AddParameter(new SqlParameterInfo(ps));
}
return(description);
}
public SqlCommandGenerateContextBuilder(SqlCommandGenerateContext context)
{
this.context = context;
}
public static SqlCommandGenerateContextBuilder Create()
{
SqlCommandGenerateContext context = new SqlCommandGenerateContext();
return(new SqlCommandGenerateContextBuilder(context));
}
/// <summary> /// 生成查询行数的语句 /// </summary> /// <param name="context"></param> /// <returns></returns> protected abstract SqlCommandDescription GenerateCount(SqlCommandGenerateContext context);
