/******************************************************************************** Copyright (C) 1992-2006 Trolltech ASA. All rights reserved.**** This file is part of the QtSql module of the Qt Toolkit.**** This file may be used under the terms of the GNU General Public** License version 2.0 as published by the Free Software Foundation** and appearing in the file LICENSE.GPL included in the packaging of** this file.  Please review the following information to ensure GNU** General Public Licensing requirements will be met:** http://www.trolltech.com/products/qt/opensource.html**** If you are unsure which license is appropriate for your use, please** review the following information:** http://www.trolltech.com/products/qt/licensing.html or contact the** sales department at sales@trolltech.com.**** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.******************************************************************************/#include "qsqlrecord.h"#include "qdebug.h"#include "qstringlist.h"#include "qatomic.h"#include "qsqlfield.h"#include "qstring.h"#include "qvector.h"class QSqlRecordPrivate{public:    QSqlRecordPrivate();    QSqlRecordPrivate(const QSqlRecordPrivate &other);    inline bool contains(int index) { return index >= 0 && index < fields.count(); }    QString createField(int index, const QString &prefix) const;    QVector<QSqlField> fields;    QAtomic ref;};QSqlRecordPrivate::QSqlRecordPrivate(){    ref = 1;}QSqlRecordPrivate::QSqlRecordPrivate(const QSqlRecordPrivate &other): fields(other.fields){    ref = 1;}/*! \internal    Just for compat*/QString QSqlRecordPrivate::createField(int index, const QString &prefix) const{    QString f;    if (!prefix.isEmpty())        f = prefix + QLatin1Char('.');    f += fields.at(index).name();    return f;}/*!    \class QSqlRecord    \brief The QSqlRecord class encapsulates a database record.    \ingroup database    \ingroup shared    \module sql    The QSqlRecord class encapsulates the functionality and    characteristics of a database record (usually a row in a table or    view within the database). QSqlRecord supports adding and    removing fields as well as setting and retrieving field values.    The values of a record's fields' can be set by name or position    with setValue(); if you want to set a field to null use    setNull(). To find the position of a field by name use indexOf(),    and to find the name of a field at a particular position use    fieldName(). Use field() to retrieve a QSqlField object for a    given field. Use contains() to see if the record contains a    particular field name.    When queries are generated to be executed on the database only    those fields for which isGenerated() is true are included in the    generated SQL.    A record can have fields added with append() or insert(), replaced    with replace(), and removed with remove(). All the fields can be    removed with clear(). The number of fields is given by count();    all their values can be cleared (to null) using clearValues().    \sa QSqlField, QSqlQuery::record()*//*!    Constructs an empty record.    \sa isEmpty(), append(), insert()*/QSqlRecord::QSqlRecord(){    d = new QSqlRecordPrivate();}/*!    Constructs a copy of \a other.    QSqlRecord is \l{implicitly shared}. This means you can make copies    of a record in \l{constant time}.*/QSqlRecord::QSqlRecord(const QSqlRecord& other){    d = other.d;    d->ref.ref();}/*!    Sets the record equal to \a other.    QSqlRecord is \l{implicitly shared}. This means you can make copies    of a record in \l{constant time}.*/QSqlRecord& QSqlRecord::operator=(const QSqlRecord& other){    qAtomicAssign(d, other.d);    return *this;}/*!    Destroys the object and frees any allocated resources.*/QSqlRecord::~QSqlRecord(){    if (!d->ref.deref())        delete d;}/*!    \fn bool QSqlRecord::operator!=(const QSqlRecord &other) const    Returns true if this object is not identical to \a other;    otherwise returns false.    \sa operator==()*//*!    Returns true if this object is identical to \a other (i.e., has    the same fields in the same order); otherwise returns false.    \sa operator!=()*/bool QSqlRecord::operator==(const QSqlRecord &other) const{    return d->fields == other.d->fields;}/*!    Returns the value of the field located at position \a index in    the record. If \a index is out of bounds, an invalid QVariant    is returned.    \sa fieldName() isNull()*/QVariant QSqlRecord::value(int index) const{    return d->fields.value(index).value();}/*!    \overload    Returns the value of the field called \a name in the record. If    field \a name does not exist an invalid variant is returned.    \sa indexOf()*/QVariant QSqlRecord::value(const QString& name) const{    return value(indexOf(name));}/*!    Returns the name of the field at position \a index. If the field    does not exist, an empty string is returned.    \sa indexOf()*/QString QSqlRecord::fieldName(int index) const{    return d->fields.value(index).name();}/*!    Returns the position of the field called \a name within the    record, or -1 if it cannot be found. Field names are not    case-sensitive. If more than one field matches, the first one is    returned.    \sa fieldName()*/int QSqlRecord::indexOf(const QString& name) const{    QString nm = name.toUpper();    for (int i = 0; i < count(); ++i) {        if (d->fields.at(i).name().toUpper() == nm) // TODO: case-insensitive comparison            return i;    }    return -1;}#ifdef QT3_SUPPORT/*!    \obsolete    Use field() instead*/const QSqlField* QSqlRecord::fieldPtr(int index) const{    if (!d->contains(index))        return 0;    return &d->fields.at(index);}/*!    \obsolete    Use field() instead*/const QSqlField* QSqlRecord::fieldPtr(const QString& name) const{    int i = indexOf(name);    if (!d->contains(i))        return 0;    return &d->fields.at(i);}#endif //QT3_SUPPORT/*!    Returns the field at position \a index. If the position is out of    range, an empty field is returned. */QSqlField QSqlRecord::field(int index) const{    return d->fields.value(index);}/*! \overload    Returns the field called \a name. */QSqlField QSqlRecord::field(const QString &name) const{    return field(indexOf(name));}/*!    Append a copy of field \a field to the end of the record.    \sa insert() replace() remove()*/void QSqlRecord::append(const QSqlField& field){    detach();    d->fields.append(field);}/*!    Inserts the field \a field at position \a pos in the record.    \sa append() replace() remove() */void QSqlRecord::insert(int pos, const QSqlField& field){   detach();   d->fields.insert(pos, field);}/*!    Replaces the field at position \a pos with the given \a field. If    \a pos is out of range, nothing happens.    \sa append() insert() remove()*/void QSqlRecord::replace(int pos, const QSqlField& field){    if (!d->contains(pos))        return;    detach();    d->fields[pos] = field;}/*!    Removes the field at position \a pos. If \a pos is out of range,    nothing happens.    \sa append() insert() replace()*/void QSqlRecord::remove(int pos){    if (!d->contains(pos))        return;    detach();    d->fields.remove(pos);}/*!    Removes all the record's fields.    \sa clearValues() isEmpty()*/void QSqlRecord::clear(){    detach();    d->fields.clear();}/*!    Returns true if there are no fields in the record; otherwise    returns false.    \sa append() insert() clear()*/bool QSqlRecord::isEmpty() const{    return d->fields.isEmpty();}/*!    Returns true if there is a field in the record called \a name;    otherwise returns false.*/bool QSqlRecord::contains(const QString& name) const{    return indexOf(name) >= 0;}/*!    Clears the value of all fields in the record and sets each field    to null.    \sa setValue()*/void QSqlRecord::clearValues(){    detach();    int count = d->fields.count();    for (int i = 0; i < count; ++i)        d->fields[i].clear();}/*!    Sets the generated flag for the field called \a name to \a    generated. If the field does not exist, nothing happens. Only    fields that have \a generated set to true are included in the SQL    that is generated by QSqlQueryModel for example.    \sa isGenerated()*/void QSqlRecord::setGenerated(const QString& name, bool generated){    setGenerated(indexOf(name), generated);}/*!    \overload    Sets the generated flag for the field \a index to \a generated.    \sa isGenerated()*/void QSqlRecord::setGenerated(int index, bool generated){    if (!d->contains(index))        return;    detach();    d->fields[index].setGenerated(generated);}/*!    \overload    Returns true if the field \a index is null or if there is no field at    position \a index; otherwise returns false.*/bool QSqlRecord::isNull(int index) const{    return d->fields.value(index).isNull();}/*!    Returns true if the field called \a name is null or if there is no    field called \a name; otherwise returns false.    \sa setNull()*/bool QSqlRecord::isNull(const QString& name) const{    return isNull(indexOf(name));}/*!    Sets the value of field \a index to null. If the field does not exist,    nothing happens.    \sa setValue()*/void QSqlRecord::setNull(int index){    if (!d->contains(index))        return;    detach();    d->fields[index].clear();}/*!    \overload    Sets the value of the field called \a name to null. If the field    does not exist, nothing happens.*/void QSqlRecord::setNull(const QString& name){    setNull(indexOf(name));}/*!    Returns true if the record has a field called \a name and this    field is to be generated (the default); otherwise returns false.    \sa setGenerated()*/bool QSqlRecord::isGenerated(const QString& name) const{    return isGenerated(indexOf(name));}/*! \overload    Returns true if the record has a field at position \a index and this    field is to be generated (the default); otherwise returns false.    \sa setGenerated()*/bool QSqlRecord::isGenerated(int index) const{    return d->fields.value(index).isGenerated();}#ifdef QT3_SUPPORT/*!    Returns a list of all the record's field names as a string    separated by \a sep.    In the unlikely event that you used this function in Qt 3, you    can simulate it using the rest of the QSqlRecord public API.*/QString QSqlRecord::toString(const QString& prefix, const QString& sep) const{    QString pflist;    bool comma = false;    for (int i = 0; i < count(); ++i) {        if (!d->fields.value(i).isGenerated()) {            if (comma)                pflist += sep + QLatin1Char(' ');            pflist += d->createField(i, prefix);            comma = true;        }    }    return pflist;}/*!    Returns a list of all the record's field names, each having the    prefix \a prefix.    In the unlikely event that you used this function in Qt 3, you    can simulate it using the rest of the QSqlRecord public API.*/QStringList QSqlRecord::toStringList(const QString& prefix) const{    QStringList s;    for (int i = 0; i < count(); ++i) {        if (!d->fields.value(i).isGenerated())            s += d->createField(i, prefix);    }    return s;}#endif // QT3_SUPPORT/*!    Returns the number of fields in the record.    \sa isEmpty()*/int QSqlRecord::count() const{    return d->fields.count();}/*!    Sets the value of the field at position \a index to \a val. If the    field does not exist, nothing happens.    \sa setNull()*/void QSqlRecord::setValue(int index, const QVariant& val){    if (!d->contains(index))        return;    detach();    d->fields[index].setValue(val);}/*!    \overload    Sets the value of the field called \a name to \a val. If the field    does not exist, nothing happens.*/void QSqlRecord::setValue(const QString& name, const QVariant& val){    setValue(indexOf(name), val);}/*! \internal*/void QSqlRecord::detach(){    qAtomicDetach(d);}#ifndef QT_NO_DEBUG_STREAMQDebug operator<<(QDebug dbg, const QSqlRecord &r){    dbg.nospace() << "QSqlRecord(" << r.count() << ")";    for (int i = 0; i < r.count(); ++i)        dbg.nospace() << QLatin1String("\n ") << QString::fromLatin1("%1: ").arg(i, 2)                      << r.field(i);    return dbg.space();}#endif/*!    \fn int QSqlRecord::position(const QString& name) const    Use indexOf() instead.*/