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88 lines
2.6 KiB
C++
Executable File
88 lines
2.6 KiB
C++
Executable File
/* Copyright (C) 2017 MariaDB Corporaton
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "allnull.h"
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using namespace mcsv1sdk;
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struct allnull_data
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{
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uint64_t totalQuantity;
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uint64_t totalNulls;
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};
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#define OUT_TYPE int64_t
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mcsv1_UDAF::ReturnCode allnull::init(mcsv1Context* context,
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COL_TYPES& colTypes)
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{
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context->setUserDataSize(sizeof(allnull_data));
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if (colTypes.size() < 1)
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{
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// The error message will be prepended with
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// "The storage engine for the table doesn't support "
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context->setErrorMessage("allnull() with 0 arguments");
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return mcsv1_UDAF::ERROR;
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}
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context->setResultType(CalpontSystemCatalog::TINYINT);
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return mcsv1_UDAF::SUCCESS;
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}
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mcsv1_UDAF::ReturnCode allnull::reset(mcsv1Context* context)
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{
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struct allnull_data* data = (struct allnull_data*)context->getUserData()->data;
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data->totalQuantity = 0;
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data->totalNulls = 0;
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return mcsv1_UDAF::SUCCESS;
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}
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mcsv1_UDAF::ReturnCode allnull::nextValue(mcsv1Context* context,
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std::vector<ColumnDatum>& valsIn)
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{
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struct allnull_data* data = (struct allnull_data*)context->getUserData()->data;
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for (size_t i = 0; i < context->getParameterCount(); i++)
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{
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data->totalQuantity++;
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if (context->isParamNull(0))
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{
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data->totalNulls++;
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}
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}
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return mcsv1_UDAF::SUCCESS;
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}
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mcsv1_UDAF::ReturnCode allnull::subEvaluate(mcsv1Context* context, const UserData* userDataIn)
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{
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struct allnull_data* outData = (struct allnull_data*)context->getUserData()->data;
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struct allnull_data* inData = (struct allnull_data*)userDataIn->data;
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outData->totalQuantity += inData->totalQuantity;
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outData->totalNulls += inData->totalNulls;
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return mcsv1_UDAF::SUCCESS;
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}
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mcsv1_UDAF::ReturnCode allnull::evaluate(mcsv1Context* context, static_any::any& valOut)
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{
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OUT_TYPE allNull;
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struct allnull_data* data = (struct allnull_data*)context->getUserData()->data;
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allNull = data->totalQuantity > 0 && data->totalNulls == data->totalQuantity;
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valOut = allNull;
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return mcsv1_UDAF::SUCCESS;
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}
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