---

TripleSource.cpp

#define TRACE_NAME "TripleSource"

#include "TripleSource.h"
#include "VariableScope.h"

//
//  Standard Member Functions
//

TripleSource::TripleSource()
{
    // blank default    
}

#if 0
bool TripleSource::operator==(const TripleSource& other) const
{
    if (&other == this) return true;
    if (count() != other.count()) return false;

    // BUG should try to match up variables...
    return true
}
#endif

#if 0  /* omit definitions until they are implemented */

TripleSource::TripleSource(const TripleSource& other)
{
    NOT_IMPLEMENTED
}

const TripleSource& TripleSource::operator=(const TripleSource& other)
{
    NOT_IMPLEMENTED
}

bool TripleSource::operator<(const TripleSource& other) const
{
    NOT_IMPLEMENTED
}

size_t TripleSource::hash() const
{
    NOT_IMPLEMENTED
}

#endif /* omit definitions until they are implemented */
    

std::ostream& TripleSource::print_to(std::ostream& stream) const
{
    stream << "# TripleSource at 0x" << std::hex << static_cast<const void*>(this) << std::dec;
    stream << std::endl;

    size_t numVars = getScope()->getNumVars();
    stream << "#   variables" << std::endl;
    for (size_t i=0; i<numVars; i++) {
    Symbol s = getScope()->getVar(i);
    stream << "#      " << i << ".  " << s << std::endl;
    }
    

    LoopState l;
    size_t count = 0;
    stream << "#   triples" << std::endl;
    count = 0;
    while (Triple t = fetch(Triple::null, l)) {
    stream << "#      " << count++ << ".  " << t << std::endl;
    }
    
    return stream;
}


std::ostream& TripleSource::printNTriples(std::ostream& stream, const char* prefix) const
{
    LoopState l;
    size_t count = 0;
    count = 0;
    while (Triple t = fetch(Triple::null, l)) {
    stream << prefix << t << "." << std::endl;
    }
    
    return stream;
}


TripleSource::~TripleSource()
{
    // blank default    
}

//
//  Additional Public Member Functions
//

#if 0
Query* TripleSource::fetch(const TripleSource* complexPattern) const
{
   NOT_IMPLEMENTED;
}
#endif

VariableScope* TripleSource::getScope() const
{
   NOT_IMPLEMENTED;
}

Pattern* TripleSource::getPatternView()
{
   NOT_IMPLEMENTED;
}

size_t TripleSource::count() const
{
    LoopState l;
    size_t count = 0;
    while (Triple t = fetch(Triple::null, l)) {
    count++;
    }
    return count;
}

//
//  Additional Private Member Functions
//



#undef TRACE_NAME

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