qsqlfield.cpp

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#include "qsqlfield.h"
#include "qatomic.h"
#include "qdebug.h"

QT_BEGIN_NAMESPACE

class QSqlFieldPrivate
{
public:
    QSqlFieldPrivate(const QString &name,
              QVariant::Type type) :
        ref(1), nm(name), ro(false), type(type), req(QSqlField::Unknown),
        len(-1), prec(-1), tp(-1), gen(true), autoval(false)
    {
    }

    QSqlFieldPrivate(const QSqlFieldPrivate &other)
        : ref(1),
          nm(other.nm),
          ro(other.ro),
          type(other.type),
          req(other.req),
          len(other.len),
          prec(other.prec),
          def(other.def),
          tp(other.tp),
          gen(other.gen),
          autoval(other.autoval)
    {}

    bool operator==(const QSqlFieldPrivate& other) const
    {
        return (nm == other.nm
                && ro == other.ro
                && type == other.type
                && req == other.req
                && len == other.len
                && prec == other.prec
                && def == other.def
                && gen == other.gen
                && autoval == other.autoval);
    }

    QAtomicInt ref;
    QString nm;
    uint ro: 1;
    QVariant::Type type;
    QSqlField::RequiredStatus req;
    int len;
    int prec;
    QVariant def;
    int tp;
    uint gen: 1;
    uint autoval: 1;
};


QSqlField::QSqlField(const QString& fieldName, QVariant::Type type)
{
    d = new QSqlFieldPrivate(fieldName, type);
    val = QVariant(type);
}

QSqlField::QSqlField(const QSqlField& other)
{
    d = other.d;
    d->ref.ref();
    val = other.val;
}

QSqlField& QSqlField::operator=(const QSqlField& other)
{
    qAtomicAssign(d, other.d);
    val = other.val;
    return *this;
}


bool QSqlField::operator==(const QSqlField& other) const
{
    return ((d == other.d || *d == *other.d)
            && val == other.val);
}

QSqlField::~QSqlField()
{
    if (!d->ref.deref())
        delete d;
}

void QSqlField::setRequiredStatus(RequiredStatus required)
{
    detach();
    d->req = required;
}

void QSqlField::setLength(int fieldLength)
{
    detach();
    d->len = fieldLength;
}

void QSqlField::setPrecision(int precision)
{
    detach();
    d->prec = precision;
}

void QSqlField::setDefaultValue(const QVariant &value)
{
    detach();
    d->def = value;
}

void QSqlField::setSqlType(int type)
{
    detach();
    d->tp = type;
}

void QSqlField::setGenerated(bool gen)
{
    detach();
    d->gen = gen;
}


void QSqlField::setValue(const QVariant& value)
{
    if (isReadOnly())
        return;
    val = value;
}

void QSqlField::clear()
{
    if (isReadOnly())
        return;
    val = QVariant(type());
}

void QSqlField::setName(const QString& name)
{
    detach();
    d->nm = name;
}

void QSqlField::setReadOnly(bool readOnly)
{
    detach();
    d->ro = readOnly;
}

QString QSqlField::name() const
{
    return d->nm;
}

QVariant::Type QSqlField::type() const
{
    return d->type;
}

void QSqlField::setType(QVariant::Type type)
{
    detach();
    d->type = type;
    if (!val.isValid())
        val = QVariant(type);
}


bool QSqlField::isReadOnly() const
{ return d->ro; }

bool QSqlField::isNull() const
{ return val.isNull(); }

void QSqlField::detach()
{
    qAtomicDetach(d);
}

QSqlField::RequiredStatus QSqlField::requiredStatus() const
{
    return d->req;
}

int QSqlField::length() const
{
    return d->len;
}

int QSqlField::precision() const
{
    return d->prec;
}

QVariant QSqlField::defaultValue() const
{
    return d->def;
}

int QSqlField::typeID() const
{
    return d->tp;
}

bool QSqlField::isGenerated() const
{
    return d->gen;
}

bool QSqlField::isValid() const
{
    return d->type != QVariant::Invalid;
}

#ifndef QT_NO_DEBUG_STREAM
QDebug operator<<(QDebug dbg, const QSqlField &f)
{
#ifndef Q_BROKEN_DEBUG_STREAM
    dbg.nospace() << "QSqlField(" << f.name() << ", " << QVariant::typeToName(f.type());
    if (f.length() >= 0)
        dbg.nospace() << ", length: " << f.length();
    if (f.precision() >= 0)
        dbg.nospace() << ", precision: " << f.precision();
    if (f.requiredStatus() != QSqlField::Unknown)
        dbg.nospace() << ", required: "
                      << (f.requiredStatus() == QSqlField::Required ? "yes" : "no");
    dbg.nospace() << ", generated: " << (f.isGenerated() ? "yes" : "no");
    if (f.typeID() >= 0)
        dbg.nospace() << ", typeID: " << f.typeID();
    if (!f.defaultValue().isNull())
        dbg.nospace() << ", auto-value: \"" << f.defaultValue() << '\"';
    dbg.nospace() << ')';
    return dbg.space();
#else
    qWarning("This compiler doesn't support streaming QSqlField to QDebug");
    return dbg;
    Q_UNUSED(f);
#endif
}
#endif

bool QSqlField::isAutoValue() const
{
    return d->autoval;
}

void QSqlField::setAutoValue(bool autoVal)
{
    detach();
    d->autoval = autoVal;
}

QT_END_NAMESPACE