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112 lines
3.0 KiB
C++
112 lines
3.0 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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#ifndef COMMAND_H
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#define COMMAND_H
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#include <boost/shared_ptr.hpp>
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#include <boost/uuid/uuid.hpp>
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#include "serializeable.h"
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#include "bytestream.h"
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#include "rowgroup.h"
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namespace primitiveprocessor
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{
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class BatchPrimitiveProcessor;
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class Command;
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typedef boost::shared_ptr<Command> SCommand;
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class Command
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{
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public:
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enum CommandType {
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NONE,
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COLUMN_COMMAND,
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DICT_STEP,
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DICT_SCAN,
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PASS_THRU,
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RID_TO_STRING,
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FILTER_COMMAND,
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PSEUDOCOLUMN
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};
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static const uint8_t NOT_FEEDER = 0;
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static const uint8_t FILT_FEEDER = 1;
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static const uint8_t LEFT_FEEDER = 3;
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static const uint8_t RIGHT_FEEDER = 5;
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Command(CommandType c);
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virtual ~Command();
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virtual void execute() = 0;
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virtual void project() = 0;
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virtual void projectIntoRowGroup(rowgroup::RowGroup &rg, uint32_t columnPosition) = 0;
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virtual uint64_t getLBID() = 0;
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virtual void getLBIDList(uint32_t loopCount, std::vector<int64_t> *out) {} // the default fcn returns 0 lbids
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virtual void nextLBID() = 0;
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virtual void createCommand(messageqcpp::ByteStream &);
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virtual void resetCommand(messageqcpp::ByteStream &);
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/* Duplicate() makes a copy of this object as constructed by createCommand().
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It's thread-safe */
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virtual SCommand duplicate() = 0;
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bool operator==(const Command &) const;
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bool operator!=(const Command& c) const { return !(*this == c); }
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/* Put bootstrap code here (ie, build the template primitive msg) */
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virtual void prep(int8_t outputType, bool makeAbsRids) = 0;
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virtual void setBatchPrimitiveProcessor(BatchPrimitiveProcessor *);
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virtual void setMakeAbsRids(bool);
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CommandType getCommandType() const { return cmdType; }
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// if feeding a filtercommand
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// note: a filtercommand itself can feed another filtercommand
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uint8_t filterFeeder() { return fFilterFeeder; }
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void filterFeeder(uint8_t f) { fFilterFeeder = f; }
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virtual void copyRidsForFilterCmd();
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static Command* makeCommand(messageqcpp::ByteStream&, CommandType*, std::vector<SCommand>&);
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uint32_t getOID() const { return OID; }
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uint32_t getTupleKey() const { return tupleKey; }
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virtual int getCompType() const=0;
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protected:
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BatchPrimitiveProcessor *bpp;
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CommandType cmdType;
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uint8_t fFilterFeeder;
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uint32_t OID;
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uint32_t tupleKey;
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boost::uuids::uuid queryUuid;
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boost::uuids::uuid stepUuid;
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void duplicate(Command *);
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private:
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Command();
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Command(const Command &);
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};
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}
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#endif
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