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ircd::db: Abort the object.

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Jason Volk 2017-08-28 14:49:07 -07:00
parent 121670d1a8
commit f7c1e43ae9
1 changed files with 0 additions and 112 deletions
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include/ircd/db/object.h
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@ -1,112 +0,0 @@
/*
* Copyright (C) 2016 Charybdis Development Team
* Copyright (C) 2016 Jason Volk <jason@zemos.net>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice is present in all copies.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#pragma once
#define HAVE_IRCD_DB_OBJECT_H
#include "value.h"
namespace ircd {
namespace db {
template<database *const &d>
struct object
:row
{
struct const_iterator;
string_view prefix;
string_view index;
template<class T = string_view> value<d, T> get(const string_view &name);
object(const string_view &index, const string_view &prefix = {}, gopts = {});
object(const string_view &index, const std::initializer_list<json::index::member> &, gopts = {});
object() = default;
};
} // namespace db
} // namespace ircd
template<ircd::db::database *const &d>
ircd::db::object<d>::object(const string_view &index,
const string_view &prefix,
gopts opts)
:row{[&prefix, &index, &opts]() -> row
{
// The prefix is the name of the object we want to find members in.
// This function has to find columns starting with the prefix but not
// containing any additional '.' except the one directly after the prefix,
// as more '.' indicates sub-members which we don't fetch here.
auto &columns(d->columns);
auto low(columns.lower_bound(prefix)), hi(low);
for(; hi != std::end(columns); ++hi)
{
const auto &name(hi->first);
if(!startswith(name, prefix))
break;
}
string_view names[std::distance(low, hi)];
std::transform(low, hi, names, [&prefix](const auto &pair)
{
const auto &path(pair.first);
// Find members of this object by removing the prefix and then removing
// any members which have a '.' indicating they are not at this level.
string_view name(path);
name = lstrip(name, prefix);
name = lstrip(name, '.');
if(tokens_count(name, ".") != 1)
return string_view{};
return string_view{path};
});
// Clear empty names from the array before passing up to row{}
const auto end(std::remove(names, names + std::distance(low, hi), string_view{}));
const auto count(std::distance(names, end));
return
{
*d, index, vector_view<string_view>(names, count), opts
};
}()}
,index{index}
{
}
template<ircd::db::database *const &d>
ircd::db::object<d>::object(const string_view &index,
const std::initializer_list<json::index::member> &members,
gopts opts)
:object{index, string_view{}, opts}
{
}
template<ircd::db::database *const &d>
template<class T>
ircd::db::value<d, T>
ircd::db::object<d>::get(const string_view &name)
{
return row::operator[](name);
}