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);
}
public ParameterLookupContext(ISqlCommandGenerator sqlCommandGenerator, SqlCommandDescription description, MethodInfo methodInfo, object[] values)
{
SqlCommandGenerator = sqlCommandGenerator;
Description = description;
MethodInfo = methodInfo;
Values = values;
}
/// <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);
}
