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/*
* Copyright (C) 2010 Djellel Eddine Difallah
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Djellel Eddine Difallah nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
*/
/**
* @file
*
* Implements the DATA_DICTIONARY views which allows querying the
* state of the Query Cache
*
* CREATE TABLE DATA_DICTIONARY.QUERY_CACHE_ENTRIES (
* KEY VARCHAR NOT NULL
* , SCHEMA VARCHAR NOT NULL
* , SQL VARCHAR NOT NULL
* );
*/
#include <config.h>
#include "query_cache_service.h"
#include "data_dictionary_schema.h"
#include <fcntl.h>
#include <sys/stat.h>
using namespace std;
using namespace drizzled;
/*
*
* Query_Cache_Meta_ENTRIES view
*
*/
QueryCacheTool::QueryCacheTool() :
plugin::TableFunction("DATA_DICTIONARY", "QUERY_CACHE_ENTRIES")
{
add_field("key");
add_field("schema");
add_field("sql");
}
QueryCacheTool::Generator::Generator(Field **arg) :
plugin::TableFunction::Generator(arg)
{
it= QueryCacheService::cache.begin();
end= QueryCacheService::cache.end();
}
bool QueryCacheTool::Generator::populate()
{
if (it == end)
{
return false;
}
QueryCacheService::CacheEntry &entry= *it;
push(entry.first);
push(entry.second.schema());
push(entry.second.sql());
it++;
return true;
}
/*
*
* Query_Cache_Cached_Tables view
*
*/
CachedTables::CachedTables() :
plugin::TableFunction("DATA_DICTIONARY", "QUERY_CACHED_TABLES")
{
add_field("Table");
add_field("Cache_Keys");
}
CachedTables::Generator::Generator(Field **arg) :
plugin::TableFunction::Generator(arg)
{
it= QueryCacheService::cachedTables.begin();
end= QueryCacheService::cachedTables.end();
}
bool CachedTables::Generator::populate()
{
if (it == end)
{
return false;
}
QueryCacheService::CachedTablesEntry &entry= *it;
push(entry.first);
string list_keys;
vector<string>::iterator tmp;
for(tmp= entry.second.begin(); tmp != entry.second.end(); tmp++)
{
list_keys+= "::"+ *tmp;
}
push(list_keys);
it++;
return true;
}
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