---

Triple.cpp

#define TRACE_NAME "Triple"
#include "Triple.h"
//   why do I have _size at all?  I don't remember what that might be for!

//
//  Standard Member Functions
//

const Triple Triple::null;

Triple::Triple()
{
    _size = 0;
}

Triple::Triple(const Triple& other)
{
    for(size_t i=0; i<other.size(); i++) {
    data[i] = other.data[i];
    }
    _size = other.size();
}

const Triple& Triple::operator=(const Triple& other)
{
    for(size_t i=0; i<other.size(); i++) {
    data[i] = other.data[i];
    }
    _size = other.size();
    return other;
}

bool Triple::operator==(const Triple& other) const
{
    //std::cout << "Comparing " << *this << " and " << other << std::endl;
    // if (this == &other) return true;
    // if (_size != other._size) return false;
    for(size_t i=0; i<max_elements; i++) {
    if (data[i] != other.data[i]) return false;
    }
    // std::cout << " The SAME! " << std::endl;
    return true;
}

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

size_t Triple::hash() const
{
    size_t val = 0;
    for(size_t i=0; i<size(); i++) {
    val += (data[i].hash() << i);
    }
    return val;
}

std::ostream& Triple::print_to(std::ostream& stream) const
{
    for(size_t i=0; i<size(); i++) {
    stream << data[i];
    if (i+1 < size()) stream << " ";
    }
    return stream;
}

Triple::~Triple()
{
}

//
//  Additional Public Member Functions
//

Triple::Triple(Symbol subject, Symbol predicate, Symbol object) 
{
    _size = 3;
    data[0] = subject;
    data[1] = predicate;
    data[2] = object;
}

Symbol Triple::get(size_t index) const 
{
    assert(index < max_elements);
    return data[index];
}

void Triple::set(size_t index, value_type symbol)
{
    assert(index < max_elements);
    data[index] = symbol;
    if (index+1 > _size) _size = index+1;
}

void Triple::clear()
{
    for(size_t i=0; i<size(); i++) {
    data[i] = Symbol();
    }
    _size = 0;
}

size_t Triple::size() const 
{
    return _size;
}

//
//  Additional Private Member Functions
//

#undef TRACE_NAME

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