void cache_object_init(struct cache_object *co)
{
cache_index_init(&co->ci);
cache_init(&co->cc);
open_index_file(&co->ci);
read_cache_index_file(&co->ci);
open_cache_file(&co->cc);
read_cache_file(&co->cc);
}
bool bin_index_t::file_node::first(data_t& key,data_t& val) const
{
open_index_file();
index_t ind;
if(!first_item(root_page,ind))return false;
key=ind.key;
key.resize(key_len);
val.resize(ind.data_len);
load_data(ind.data_offset,val);
return true;
}
bool bin_index_t::file_node::get(const data_t& key,data_t& val) const
{
validate_key_len(key);
open_index_file();
if(!root_page)
return false;
index_t ind;
align_key(key,ind);
if(!get_item(ind))return false;
val.resize(ind.data_len);
load_data(ind.data_offset,val);
return true;
}
bool bin_index_t::file_node::set(const data_t& key,const data_t& val)
{
validate_key_len(key);
open_index_file();
if(!root_page)
{
root_page=create_page();
append_page(*root_page);
save_index_data(0,root_page->page_offset);
add_page(root_page);
}
index_t it;
align_key(key,it);
if(get_item(it))
{
index_t old_i=it;
if(it.data_len>=val.size())save_data(it.data_offset,val);
else it.data_offset=append_data(val);
it.data_len=val.size();
if(old_i.data_offset==it.data_offset&&
old_i.data_len==it.data_len)
return false;
update_page(it);
return false;
}
index_t v;
v.key=key;
align_key(key,v);
v.data_len=val.size();
v.data_offset=append_data(val);
add_item(v);
return true;
}