/* Copyright (C) 2014 InfiniDB, Inc.

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License
   as published by the Free Software Foundation; version 2 of
   the License.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
   MA 02110-1301, USA. */

/***********************************************************************
*   $Id: existsfilter.cpp 9210 2013-01-21 14:10:42Z rdempsey $
*
*
***********************************************************************/
#include <string>
#include <sstream>
using namespace std;

#include "existsfilter.h"
#include "bytestream.h"
using namespace messageqcpp;
#include "objectreader.h"

namespace execplan
{
/**
 * Constructors/Destructors
 */
ExistsFilter::ExistsFilter():
    fNotExists (false),
    fCorrelated (false),
    fData("Exists Filter")
{}

ExistsFilter::ExistsFilter( const SCSEP& sub,
                            const bool existFlag,
                            const bool correlated):
    fSub (sub),
    fNotExists (existFlag),
    fCorrelated (correlated),
    fData ("Exists Filter")
{}

ExistsFilter::ExistsFilter(const ExistsFilter& rhs):
    Filter(rhs),
    fSub (rhs.fSub),
    fNotExists (rhs.fNotExists),
    fCorrelated (rhs.fCorrelated),
    fData (rhs.fData)
{}

ExistsFilter::~ExistsFilter()
{}

const string ExistsFilter::toString() const
{
    ostringstream oss;
    oss << "ExistsFilter " << "correlated=" << fCorrelated << " notExists=" << fNotExists << endl;
    oss << *(fSub.get());
    return oss.str();
}

ostream& operator<<(ostream& output, const ExistsFilter& rhs)
{
    output << rhs.toString();
    return output;
}

void ExistsFilter::serialize(messageqcpp::ByteStream& b) const
{
    b << static_cast<ObjectReader::id_t>(ObjectReader::EXISTSFILTER);
    Filter::serialize(b);

    if (fSub.get() != NULL)
        fSub->serialize(b);
    else
        b << static_cast<ObjectReader::id_t>(ObjectReader::NULL_CLASS);

    b << static_cast<ByteStream::doublebyte>(fNotExists);
    b << static_cast<ByteStream::doublebyte>(fCorrelated);
}

void ExistsFilter::unserialize(messageqcpp::ByteStream& b)
{
    ObjectReader::checkType(b, ObjectReader::EXISTSFILTER);
    Filter::unserialize(b);
    fSub.reset(dynamic_cast<CalpontSelectExecutionPlan*>(ObjectReader::createExecutionPlan(b)));
    b >> reinterpret_cast< ByteStream::doublebyte&>(fNotExists);
    b >> reinterpret_cast< ByteStream::doublebyte&>(fCorrelated);
}

bool ExistsFilter::operator==(const ExistsFilter& t) const
{
    const Filter* f1, *f2;

    f1 = static_cast<const Filter*>(this);
    f2 = static_cast<const Filter*>(&t);

    if (*f1 != *f2)
        return false;

    if (*(fSub.get()) != t.fSub.get())
        return false;

    if (fNotExists != t.fNotExists)
        return false;

    if (fCorrelated != t.fCorrelated)
        return false;

    return true;
}

bool ExistsFilter::operator==(const TreeNode* t) const
{
    const ExistsFilter* o;

    o = dynamic_cast<const ExistsFilter*>(t);

    if (o == NULL)
        return false;

    return *this == *o;
}

bool ExistsFilter::operator!=(const ExistsFilter& t) const
{
    return (!(*this == t));
}

bool ExistsFilter::operator!=(const TreeNode* t) const
{
    return (!(*this == t));
}

}

