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573 lines
15 KiB
C++
573 lines
15 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
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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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/***********************************************************************
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* $Id: windowfunctioncolumn.cpp 9679 2013-07-11 22:32:03Z zzhu $
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*
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*
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***********************************************************************/
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#include <string>
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#include <iostream>
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#include <sstream>
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using namespace std;
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#include <boost/tokenizer.hpp>
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#include <boost/algorithm/string.hpp>
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using namespace boost;
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#include "bytestream.h"
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#include "windowfunctioncolumn.h"
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#include "constantcolumn.h"
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#include "arithmeticcolumn.h"
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#include "simplecolumn.h"
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#include "objectreader.h"
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#include "calpontselectexecutionplan.h"
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#include "simplefilter.h"
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#include "aggregatecolumn.h"
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#include "functioncolumn.h"
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#include "funcexp.h"
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#include "functor_export.h"
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using namespace funcexp;
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#include "rowgroup.h"
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using namespace rowgroup;
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#include "joblisttypes.h"
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using namespace joblist;
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#ifdef _MSC_VER
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#define strcasecmp stricmp
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#endif
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namespace execplan {
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void getWindowFunctionCols(execplan::ParseTree* n, void* obj)
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{
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vector<WindowFunctionColumn*>* list = reinterpret_cast< vector<WindowFunctionColumn*>*>(obj);
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TreeNode* tn = n->data();
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WindowFunctionColumn *afc = dynamic_cast<WindowFunctionColumn*>(tn);
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ArithmeticColumn *ac = dynamic_cast<ArithmeticColumn*>(tn);
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FunctionColumn *fc = dynamic_cast<FunctionColumn*>(tn);
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SimpleFilter *sf = dynamic_cast<SimpleFilter*>(tn);
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if (afc)
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list->push_back(afc);
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else if (ac)
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list->insert(list->end(), ac->windowfunctionColumnList().begin(), ac->windowfunctionColumnList().end());
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else if (fc)
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list->insert(list->end(), fc->windowfunctionColumnList().begin(), fc->windowfunctionColumnList().end());
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else if (sf)
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list->insert(list->end(), sf->windowfunctionColumnList().begin(), sf->windowfunctionColumnList().end());
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}
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/**
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* WF_Boundary class methods definition
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*/
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const std::string WF_Boundary::toString() const
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{
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ostringstream output;
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if (fVal)
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{
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output << "val: ";
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output << fVal->toString() << endl;
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}
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if (fBound)
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{
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output << "bound exp: ";
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output << fBound->toString() << endl;
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}
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switch (fFrame)
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{
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case WF_PRECEDING:
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output << "PRECEDING";
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break;
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case WF_FOLLOWING:
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output << "FOLLOWING";
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break;
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case WF_UNBOUNDED_PRECEDING:
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output << "UNBOUNDED PRECEDING";
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break;
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case WF_UNBOUNDED_FOLLOWING:
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output << "UNBOUNDED FOLLOWING";
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break;
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case WF_CURRENT_ROW:
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output << "CURRENT ROW";
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break;
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default:
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output << "UNKNOWN";
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}
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return output.str();
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}
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void WF_Boundary::serialize(messageqcpp::ByteStream& b) const
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{
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b << (uint8_t)fFrame;
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if (fVal)
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fVal->serialize(b);
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else
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b << (uint8_t) ObjectReader::NULL_CLASS;
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if (fBound)
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fBound->serialize(b);
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else
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b << (uint8_t) ObjectReader::NULL_CLASS;
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}
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void WF_Boundary::unserialize(messageqcpp::ByteStream& b)
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{
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b >> (uint8_t&)fFrame;
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fVal.reset(dynamic_cast<ReturnedColumn*>(ObjectReader::createTreeNode(b)));
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fBound.reset(dynamic_cast<ReturnedColumn*>(ObjectReader::createTreeNode(b)));
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}
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/**
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* WF_Frame class methods definition
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*/
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const string WF_Frame::toString() const
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{
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ostringstream output;
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output << "WindowFrame:" << endl;
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output << "Start:" << endl;
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output << fStart.toString() << endl;
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output << "End:" << endl;
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output << fEnd.toString() << endl;
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return output.str();
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}
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void WF_Frame::serialize(messageqcpp::ByteStream& b) const
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{
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fStart.serialize(b);
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fEnd.serialize(b);
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b << (uint8_t)fIsRange;
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}
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void WF_Frame::unserialize(messageqcpp::ByteStream& b)
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{
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fStart.unserialize(b);
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fEnd.unserialize(b);
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b >> (uint8_t&)fIsRange;
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}
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/**
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* WF_OrderBy class methods definition
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*/
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const string WF_OrderBy::toString() const
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{
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ostringstream output;
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output << "order by: " << endl;
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for (uint32_t i = 0; i < fOrders.size(); i++)
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output << fOrders[i]->toString() << endl;
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output << fFrame.toString();
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return output.str();
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}
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void WF_OrderBy::serialize(messageqcpp::ByteStream& b) const
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{
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b << (uint32_t)fOrders.size();
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for (uint32_t i = 0; i < fOrders.size(); i++)
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fOrders[i]->serialize(b);
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fFrame.serialize(b);
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}
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void WF_OrderBy::unserialize(messageqcpp::ByteStream& b)
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{
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uint32_t size;
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b >> (uint32_t&)size;
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SRCP srcp;
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for (uint32_t i = 0; i < size; i++)
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{
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srcp.reset(dynamic_cast<ReturnedColumn*>(ObjectReader::createTreeNode(b)));
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fOrders.push_back(srcp);
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}
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fFrame.unserialize(b);
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}
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/**
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* WindowFunctionColumn class definition
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*/
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WindowFunctionColumn::WindowFunctionColumn()
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{}
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WindowFunctionColumn::WindowFunctionColumn(const string& functionName, const uint32_t sessionID):
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ReturnedColumn(sessionID),
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fFunctionName(functionName)
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{}
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WindowFunctionColumn::WindowFunctionColumn( const WindowFunctionColumn& rhs, const uint32_t sessionID):
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ReturnedColumn(rhs, sessionID),
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fFunctionName(rhs.functionName()),
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fFunctionParms(rhs.functionParms()),
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fPartitions (rhs.partitions()),
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fOrderBy (rhs.orderBy())
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{}
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const string WindowFunctionColumn::toString() const
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{
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ostringstream output;
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output << "WindowFunctionColumn: " << fFunctionName;
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if (distinct())
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output << " DISTINCT";
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output << endl;
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output << "expressionId=" << fExpressionId << endl;
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output << "resultType=" << colDataTypeToString(fResultType.colDataType) << "|" << fResultType.colWidth << endl;
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output << "operationType=" << colDataTypeToString(fOperationType.colDataType) << endl;
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output << "function parm: " << endl;
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for (uint32_t i = 0; i < fFunctionParms.size(); i++)
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output << fFunctionParms[i]->toString() << endl;
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output << "partition by: " << endl;
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for (uint32_t i = 0; i < fPartitions.size(); i++)
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output << fPartitions[i]->toString() << endl;
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output << fOrderBy.toString() << endl;
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output << "getColumnList():" << endl;
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vector<SRCP> colList = getColumnList();
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for (uint32_t i = 0; i < colList.size(); i++)
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output << colList[i]->toString() << endl;
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return output.str();
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}
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void WindowFunctionColumn::serialize(messageqcpp::ByteStream& b) const
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{
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b << (ObjectReader::id_t) ObjectReader::WINDOWFUNCTIONCOLUMN;
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ReturnedColumn::serialize(b);
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b << fFunctionName;
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b << (uint32_t)fFunctionParms.size();
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for (uint32_t i = 0; i < fFunctionParms.size(); i++)
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fFunctionParms[i]->serialize(b);
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b << (uint32_t)fPartitions.size();
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for (uint32_t i = 0; i < fPartitions.size(); i++)
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fPartitions[i]->serialize(b);
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fOrderBy.serialize(b);
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}
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void WindowFunctionColumn::unserialize(messageqcpp::ByteStream& b)
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{
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ObjectReader::checkType(b, ObjectReader::WINDOWFUNCTIONCOLUMN);
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ReturnedColumn::unserialize(b);
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uint32_t size;
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SRCP srcp;
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fFunctionParms.clear();
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fPartitions.clear();
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b >> fFunctionName;
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b >> (uint32_t&)size;
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for (uint32_t i = 0; i < size; i++)
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{
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srcp.reset(dynamic_cast<ReturnedColumn*>(ObjectReader::createTreeNode(b)));
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fFunctionParms.push_back(srcp);
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}
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b >> (uint32_t&)size;
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for (uint32_t i = 0; i < size; i++)
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{
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srcp.reset(dynamic_cast<ReturnedColumn*>(ObjectReader::createTreeNode(b)));
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fPartitions.push_back(srcp);
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}
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fOrderBy.unserialize(b);
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}
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void WindowFunctionColumn::addToPartition(vector<SRCP>& groupByList)
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{
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fPartitions.insert(fPartitions.end(), groupByList.begin(), groupByList.end());
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}
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vector<SRCP> WindowFunctionColumn::getColumnList() const
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{
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vector<SRCP> columnList;
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columnList.insert(columnList.end(), fFunctionParms.begin(), fFunctionParms.end());
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columnList.insert(columnList.end(), fPartitions.begin(), fPartitions.end());
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columnList.insert(columnList.end(), fOrderBy.fOrders.begin(), fOrderBy.fOrders.end());
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if (fOrderBy.fFrame.fStart.fVal)
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columnList.push_back(fOrderBy.fFrame.fStart.fVal);
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if (fOrderBy.fFrame.fStart.fBound)
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columnList.push_back(fOrderBy.fFrame.fStart.fBound);
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if (fOrderBy.fFrame.fEnd.fVal)
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columnList.push_back(fOrderBy.fFrame.fEnd.fVal);
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if (fOrderBy.fFrame.fEnd.fBound)
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columnList.push_back(fOrderBy.fFrame.fEnd.fBound);
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return columnList;
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}
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bool WindowFunctionColumn::hasWindowFunc()
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{
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fWindowFunctionColumnList.push_back(this);
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return true;
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}
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void WindowFunctionColumn::adjustResultType()
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{
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if (fResultType.colDataType == CalpontSystemCatalog::DECIMAL &&
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!boost::iequals(fFunctionName,"COUNT") &&
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!boost::iequals(fFunctionName,"COUNT(*)") &&
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!boost::iequals(fFunctionName,"ROW_NUMBER") &&
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!boost::iequals(fFunctionName,"RANK") &&
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!boost::iequals(fFunctionName,"PERCENT_RANK") &&
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!boost::iequals(fFunctionName,"DENSE_RANK") &&
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!boost::iequals(fFunctionName,"CUME_DIST") &&
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!boost::iequals(fFunctionName,"NTILE") &&
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!boost::iequals(fFunctionName,"PERCENTILE") &&
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!fFunctionParms.empty() &&
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fFunctionParms[0]->resultType().colDataType == CalpontSystemCatalog::DOUBLE)
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fResultType = fFunctionParms[0]->resultType();
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if ((boost::iequals(fFunctionName, "LEAD") ||
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boost::iequals(fFunctionName, "LAG") ||
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boost::iequals(fFunctionName, "MIN") ||
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boost::iequals(fFunctionName, "MAX") ||
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boost::iequals(fFunctionName, "FIRST_VALUE") ||
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boost::iequals(fFunctionName, "LAST_VALUE") ||
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boost::iequals(fFunctionName, "NTH_VALUE")) &&
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!fFunctionParms.empty())
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fResultType = fFunctionParms[0]->resultType();
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}
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void WindowFunctionColumn::evaluate(Row& row, bool& isNull)
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{
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switch (fResultType.colDataType)
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{
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case CalpontSystemCatalog::DATE:
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{
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if (row.equals<4>(DATENULL, fInputIndex))
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isNull = true;
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else
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fResult.intVal = row.getUintField<4>(fInputIndex);
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break;
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}
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case CalpontSystemCatalog::DATETIME:
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{
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if (row.equals<8>(DATETIMENULL, fInputIndex))
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isNull = true;
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else
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fResult.intVal = row.getUintField<8>(fInputIndex);
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break;
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}
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case CalpontSystemCatalog::CHAR:
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case CalpontSystemCatalog::VARCHAR:
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case CalpontSystemCatalog::STRINT:
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{
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switch (row.getColumnWidth(fInputIndex))
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{
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case 1:
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if (row.equals<1>(CHAR1NULL, fInputIndex))
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isNull = true;
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else
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fResult.origIntVal = row.getUintField<1>(fInputIndex);
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break;
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case 2:
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if (row.equals<2>(CHAR2NULL, fInputIndex))
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isNull = true;
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else
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fResult.origIntVal = row.getUintField<2>(fInputIndex);
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break;
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case 3:
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case 4:
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if (row.equals<4>(CHAR4NULL, fInputIndex))
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isNull = true;
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else
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fResult.origIntVal = row.getUintField<4>(fInputIndex);
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break;
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case 5:
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case 6:
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case 7:
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case 8:
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if (row.equals<8>(CHAR8NULL, fInputIndex))
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isNull = true;
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else
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fResult.origIntVal = row.getUintField<8>(fInputIndex);
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break;
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default:
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if (row.equals(CPNULLSTRMARK, fInputIndex))
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isNull = true;
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else
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fResult.strVal = row.getStringField(fInputIndex);
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// stringColVal is padded with '\0' to colWidth so can't use str.length()
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if (strlen(fResult.strVal.c_str()) == 0)
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isNull = true;
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break;
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}
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if (fResultType.colDataType == CalpontSystemCatalog::STRINT)
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fResult.intVal = uint64ToStr(fResult.origIntVal);
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else
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fResult.intVal = atoll((char*)&fResult.origIntVal);
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break;
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}
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case CalpontSystemCatalog::BIGINT:
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{
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if (row.equals<8>(BIGINTNULL, fInputIndex))
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isNull = true;
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else
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fResult.intVal = row.getIntField<8>(fInputIndex);
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break;
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}
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case CalpontSystemCatalog::UBIGINT:
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{
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if (row.equals<8>(UBIGINTNULL, fInputIndex))
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isNull = true;
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else
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fResult.uintVal = row.getUintField<8>(fInputIndex);
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break;
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}
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case CalpontSystemCatalog::INT:
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case CalpontSystemCatalog::MEDINT:
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{
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if (row.equals<4>(INTNULL, fInputIndex))
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isNull = true;
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else
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fResult.intVal = row.getIntField<4>(fInputIndex);
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break;
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}
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case CalpontSystemCatalog::UINT:
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case CalpontSystemCatalog::UMEDINT:
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{
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if (row.equals<4>(UINTNULL, fInputIndex))
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isNull = true;
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else
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fResult.uintVal = row.getUintField<4>(fInputIndex);
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break;
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}
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case CalpontSystemCatalog::SMALLINT:
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{
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if (row.equals<2>(SMALLINTNULL, fInputIndex))
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isNull = true;
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else
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fResult.intVal = row.getIntField<2>(fInputIndex);
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break;
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}
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case CalpontSystemCatalog::USMALLINT:
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{
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if (row.equals<2>(USMALLINTNULL, fInputIndex))
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isNull = true;
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else
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fResult.uintVal = row.getUintField<2>(fInputIndex);
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break;
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}
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case CalpontSystemCatalog::TINYINT:
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{
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if (row.equals<1>(TINYINTNULL, fInputIndex))
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isNull = true;
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else
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fResult.intVal = row.getIntField<1>(fInputIndex);
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break;
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}
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case CalpontSystemCatalog::UTINYINT:
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{
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if (row.equals<1>(UTINYINTNULL, fInputIndex))
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isNull = true;
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else
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fResult.uintVal = row.getUintField<1>(fInputIndex);
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break;
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}
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//In this case, we're trying to load a double output column with float data. This is the
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// case when you do sum(floatcol), e.g.
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case CalpontSystemCatalog::FLOAT:
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case CalpontSystemCatalog::UFLOAT:
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{
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if (row.equals<4>(FLOATNULL, fInputIndex))
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isNull = true;
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else
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fResult.floatVal = row.getFloatField(fInputIndex);
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break;
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}
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case CalpontSystemCatalog::DOUBLE:
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case CalpontSystemCatalog::UDOUBLE:
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{
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if (row.equals<8>(DOUBLENULL, fInputIndex))
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isNull = true;
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else
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fResult.doubleVal = row.getDoubleField(fInputIndex);
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break;
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}
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case CalpontSystemCatalog::DECIMAL:
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case CalpontSystemCatalog::UDECIMAL:
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{
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switch (fResultType.colWidth)
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{
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case 1:
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{
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if (row.equals<1>(TINYINTNULL, fInputIndex))
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isNull = true;
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else
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{
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fResult.decimalVal.value = row.getIntField<1>(fInputIndex);
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fResult.decimalVal.scale = (unsigned)fResultType.scale;
|
|
}
|
|
break;
|
|
}
|
|
case 2:
|
|
{
|
|
if (row.equals<2>(SMALLINTNULL, fInputIndex))
|
|
isNull = true;
|
|
else
|
|
{
|
|
fResult.decimalVal.value = row.getIntField<2>(fInputIndex);
|
|
fResult.decimalVal.scale = (unsigned)fResultType.scale;
|
|
}
|
|
break;
|
|
}
|
|
case 4:
|
|
{
|
|
if (row.equals<4>(INTNULL, fInputIndex))
|
|
isNull = true;
|
|
else
|
|
{
|
|
fResult.decimalVal.value = row.getIntField<4>(fInputIndex);
|
|
fResult.decimalVal.scale = (unsigned)fResultType.scale;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
if (row.equals<8>(BIGINTNULL, fInputIndex))
|
|
isNull = true;
|
|
else
|
|
{
|
|
fResult.decimalVal.value = (int64_t)row.getUintField<8>(fInputIndex);
|
|
fResult.decimalVal.scale = (unsigned)fResultType.scale;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case CalpontSystemCatalog::VARBINARY:
|
|
isNull = true;
|
|
break;
|
|
default: // treat as int64
|
|
{
|
|
if (row.equals<8>(BIGINTNULL, fInputIndex))
|
|
isNull = true;
|
|
else
|
|
fResult.intVal = row.getUintField<8>(fInputIndex);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
ostream& operator<<(ostream& output, const WindowFunctionColumn& rhs)
|
|
{
|
|
output << rhs.toString();
|
|
return output;
|
|
}
|
|
|
|
} //namespace
|