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	panic("could not commit transaction\n");
}

void
UpdatePrereq(uint16_t stat, uint16_t prereq)
{
    MySQL::Connection &mysql = MySqlDB.conn();
    assert(mysql.connected());
    stringstream update;
    ccprintf(update, "UPDATE stats SET st_prereq=%d WHERE st_id=%d",
	     prereq, stat);
    mysql.query(update);
    if (mysql.error)
	panic("could not update prereq\n%s\n", mysql.error);

    if (mysql.commit())
	panic("could not commit transaction\n");
}

void
MySql::configure()
{
    /*
     * set up all stats!
     */
    using namespace Database;

    MySQL::Connection &mysql = MySqlDB.conn();
    if (mysql.commit())
	panic("could not commit transaction\n");

    stat_list_t::const_iterator i, end = stats().end();
    for (i = stats().begin(); i != end; ++i) {
	(*i)->visit(*this);
    }

    for (i = stats().begin(); i != end; ++i) {
	StatData *data = *i;
	if (data->prereq) {
	    uint16_t stat_id = find(data->id);
	    uint16_t prereq_id = find(data->prereq->id);
	    assert(stat_id && prereq_id);

	    UpdatePrereq(stat_id, prereq_id);
	}
    }

    if (mysql.commit())
        panic("could not commit transaction\n");

    configured = true;
}


bool
MySql::configure(const StatData &data, string type)
{
    stat.init();
    stat.name = data.name;
    stat.descr = data.desc;
    stat.type = type;
    stat.print = data.flags & print;
    stat.prec = data.precision;
    stat.nozero = data.flags & nozero;
    stat.nonan = data.flags & nonan;
    stat.total = data.flags & total;
    stat.pdf = data.flags & pdf;
    stat.cdf = data.flags & cdf;

    return stat.print;
}

void
MySql::configure(const ScalarData &data)
{
    if (!configure(data, "SCALAR"))
	return;

    insert(data.id, stat.setup());
}

void
MySql::configure(const VectorData &data)
{
    if (!configure(data, "VECTOR"))
	return;

    uint16_t statid = stat.setup();

    if (!data.subnames.empty()) {
	InsertSubData subdata;
	subdata.stat = statid;
	subdata.y = 0;
	for (int i = 0; i < data.subnames.size(); ++i) {
	    subdata.x = i;
	    subdata.name = data.subnames[i];
	    subdata.descr = data.subdescs.empty() ? "" : data.subdescs[i];

	    if (!subdata.name.empty() || !subdata.descr.empty())
		subdata.setup();
	}
    }
		 
    insert(data.id, statid);
}

void
MySql::configure(const DistData &data)
{
    if (!configure(data, "DIST"))
	return;

    if (!data.data.fancy) {
	stat.size = data.data.size;
	stat.min = data.data.min;
	stat.max = data.data.max;
	stat.bktsize = data.data.bucket_size;
    }
    insert(data.id, stat.setup());
}

void
MySql::configure(const VectorDistData &data)
{
    if (!configure(data, "VECTORDIST"))
	return;

    if (!data.data[0].fancy) {
	stat.size = data.data[0].size;
	stat.min = data.data[0].min;
	stat.max = data.data[0].max;
	stat.bktsize = data.data[0].bucket_size;
    }

    uint16_t statid = stat.setup();

    if (!data.subnames.empty()) {
	InsertSubData subdata;
	subdata.stat = statid;
	subdata.y = 0;
	for (int i = 0; i < data.subnames.size(); ++i) {
	    subdata.x = i;
	    subdata.name = data.subnames[i];
	    subdata.descr = data.subdescs.empty() ? "" : data.subdescs[i];
	    if (!subdata.name.empty() || !subdata.descr.empty())
		subdata.setup();
	}
    }

    insert(data.id, statid);
}

void
MySql::configure(const Vector2dData &data)
{
    if (!configure(data, "VECTOR2D"))
	return;

    uint16_t statid = stat.setup();

    if (!data.subnames.empty()) {
	InsertSubData subdata;
	subdata.stat = statid;
	subdata.y = -1;
	for (int i = 0; i < data.subnames.size(); ++i) {
	    subdata.x = i;
	    subdata.name = data.subnames[i];
	    subdata.descr = data.subdescs.empty() ? "" : data.subdescs[i];
	    if (!subdata.name.empty() || !subdata.descr.empty())
		subdata.setup();
	}
    }

    if (!data.y_subnames.empty()) {
	InsertSubData subdata;
	subdata.stat = statid;
	subdata.x = -1;
	subdata.descr = "";
	for (int i = 0; i < data.y_subnames.size(); ++i) {
	    subdata.y = i;
	    subdata.name = data.y_subnames[i];
	    if (!subdata.name.empty())
		subdata.setup();
	}
    }

    insert(data.id, statid);
}

void
MySql::configure(const FormulaData &data)
{
    configure(data, "FORMULA");
    insert(data.id, stat.setup());
    InsertFormula(find(data.id), data.str());
}

void
MySql::output(MainBin *bin)
{
    MySQL::Connection &mysql = MySqlDB.conn();

    if (bin) {
	bin->activate();
	newdata.bin = SetupBin(bin->name());
    } else {
	newdata.bin = 0;
    }

    Database::stat_list_t::const_iterator i, end = Database::stats().end();
    for (i = Database::stats().begin(); i != end; ++i) {
	StatData *stat = *i;
	if (bin && stat->binned() || !bin && !stat->binned()) {
	    stat->visit(*this);
            if (mysql.commit())
                panic("could not commit transaction\n");
        }
    }
}

bool
MySql::valid() const
{
    return MySqlDB.connected();
}

void
MySql::output()
{
    using namespace Database;
    assert(valid());

    if (!configured)
	configure();

    // store sample #
    newdata.tick = curTick;

    output(NULL);
    if (!bins().empty()) {
	bin_list_t::iterator i, end = bins().end();
	for (i = bins().begin(); i != end; ++i)
	    output(*i);
    }

    newdata.flush();
}

void
MySql::output(const ScalarData &data)
{
    if (!(data.flags & print))
	return;

    newdata.stat = find(data.id);
    newdata.x = 0;
    newdata.y = 0;
    newdata.data = data.value();

    newdata.insert();
}

void
MySql::output(const VectorData &data)
{
    if (!(data.flags & print))
	return;

    newdata.stat = find(data.id);
    newdata.y = 0;

    const VCounter &cvec = data.value();
    int size = data.size();
    for (int x = 0; x < size; x++) {
	newdata.x = x;
	newdata.data = cvec[x];
	newdata.insert();
    }
}

void
MySql::output(const DistDataData &data)
{
    const int db_sum = -1;
    const int db_squares = -2;
    const int db_samples = -3;
    const int db_min_val = -4;
    const int db_max_val = -5;
    const int db_underflow = -6;
    const int db_overflow = -7;

    newdata.x = db_sum;
    newdata.data = data.sum;
    newdata.insert();

    newdata.x = db_squares;
    newdata.data = data.squares;
    newdata.insert();

    newdata.x = db_samples;
    newdata.data = data.samples;
    newdata.insert();

    if (data.samples && !data.fancy) {
	newdata.x = db_min_val;
	newdata.data = data.min_val;
	newdata.insert();

	newdata.x = db_max_val;
	newdata.data = data.max_val;
	newdata.insert();

	newdata.x = db_underflow;
	newdata.data = data.underflow;
	newdata.insert();

	newdata.x = db_overflow;
	newdata.data = data.overflow;
	newdata.insert();

	int size = data.cvec.size();
	for (int x = 0; x < size; x++) {
	    newdata.x = x;
	    newdata.data = data.cvec[x];
	    newdata.insert();
	}
    }
}


void
MySql::output(const DistData &data)
{
    if (!(data.flags & print))
	return;

    newdata.stat = find(data.id);
    newdata.y = 0;
    output(data.data);
}

void
MySql::output(const VectorDistData &data)
{
    if (!(data.flags & print))
	return;

    newdata.stat = find(data.id);

    int size = data.data.size();
    for (int y = 0; y < size; ++y) {
	newdata.y = y;
	output(data.data[y]);
    }
}

void
MySql::output(const Vector2dData &data)
{
    if (!(data.flags & print))
	return;

    newdata.stat = find(data.id);

    int index = 0;
    for (int x = 0; x < data.x; x++) {
	newdata.x = x;
	for (int y = 0; y < data.y; y++) {
	    newdata.y = y;
	    newdata.data = data.cvec[index++];
	    newdata.insert();
	}
    }
}

void
MySql::output(const FormulaData &data)
{
}

/*
 * Implement the visitor
 */
void
MySql::visit(const ScalarData &data)
{
    if (!configured)
	configure(data);
    else
	output(data);
}

void
MySql::visit(const VectorData &data)
{
    if (!configured)
	configure(data);
    else
	output(data);
}

void
MySql::visit(const DistData &data)
{
    if (!configured)
	configure(data);
    else
	output(data);
}

void
MySql::visit(const VectorDistData &data)
{
    if (!configured)
	configure(data);
    else
	output(data);
}

void
MySql::visit(const Vector2dData &data)
{
    if (!configured)
	configure(data);
    else
	output(data);
}

void
MySql::visit(const FormulaData &data)
{
    if (!configured)
	configure(data);
    else
	output(data);
}

/* namespace Stats */ }