Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731

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diff --git a/src/sql/qsqlfield.cpp b/src/sql/qsqlfield.cpp
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+/****************************************************************************
+**
+** Implementation of TQSqlField class
+**
+** Created : 2000-11-03
+**
+** Copyright (C) 2005-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of the sql module of the TQt GUI Toolkit.
+**
+** This file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free
+** Software Foundation and appearing in the files LICENSE.GPL2
+** and LICENSE.GPL3 included in the packaging of this file.
+** Alternatively you may (at your option) use any later version
+** of the GNU General Public License if such license has been
+** publicly approved by Trolltech ASA (or its successors, if any)
+** and the KDE Free TQt Foundation.
+**
+** Please review the following information to ensure GNU General
+** Public Licensing retquirements will be met:
+** http://trolltech.com/products/qt/licenses/licensing/opensource/.
+** If you are unsure which license is appropriate for your use, please
+** review the following information:
+** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
+** or contact the sales department at sales@trolltech.com.
+**
+** This file may be used under the terms of the Q Public License as
+** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
+** included in the packaging of this file.  Licensees holding valid TQt
+** Commercial licenses may use this file in accordance with the TQt
+** Commercial License Agreement provided with the Software.
+**
+** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
+** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
+** herein.
+**
+**********************************************************************/
+
+#include "qsqlfield.h"
+
+#ifndef QT_NO_SQL
+
+
+/*!
+    \class TQSqlField qsqlfield.h
+    \brief The TQSqlField class manipulates the fields in SQL database tables
+    and views.
+
+    \ingroup database
+    \module sql
+
+    TQSqlField represents the characteristics of a single column in a
+    database table or view, such as the data type and column name. A
+    field also contains the value of the database column, which can be
+    viewed or changed.
+
+    Field data values are stored as TQVariants. Using an incompatible
+    type is not permitted. For example:
+
+    \code
+    TQSqlField f( "myfield", TQVariant::Int );
+    f.setValue( TQPixmap() );  // will not work
+    \endcode
+
+    However, the field will attempt to cast certain data types to the
+    field data type where possible:
+
+    \code
+    TQSqlField f( "myfield", TQVariant::Int );
+    f.setValue( TQString("123") ); // casts TQString to int
+    \endcode
+
+    TQSqlField objects are rarely created explicitly in application
+    code. They are usually accessed indirectly through \l TQSqlRecord
+    or \l TQSqlCursor which already contain a list of fields. For
+    example:
+
+    \code
+    TQSqlCursor cur( "Employee" );        // create cursor using the 'Employee' table
+    TQSqlField* f = cur.field( "name" );  // use the 'name' field
+    f->setValue( "Dave" );               // set field value
+    ...
+    \endcode
+
+    In practice we rarely need to extract a pointer to a field at all.
+    The previous example would normally be written:
+
+    \code
+    TQSqlCursor cur( "Employee" );
+    cur.setValue( "name", "Dave" );
+    ...
+    \endcode
+*/
+
+/*!
+    Constructs an empty field called \a fieldName of type \a type.
+*/
+
+TQSqlField::TQSqlField( const TQString& fieldName, TQVariant::Type type )
+    : nm(fieldName), ro(FALSE), nul(FALSE)
+{
+    d = new TQSqlFieldPrivate();
+    d->type = type;
+    val.cast( type );
+}
+
+/*!
+    Constructs a copy of \a other.
+*/
+
+TQSqlField::TQSqlField( const TQSqlField& other )
+    : nm( other.nm ), val( other.val ), ro( other.ro ), nul( other.nul )
+{
+    d = new TQSqlFieldPrivate();
+    d->type = other.d->type;
+}
+
+/*!
+    Sets the field equal to \a other.
+*/
+
+TQSqlField& TQSqlField::operator=( const TQSqlField& other )
+{
+    nm = other.nm;
+    val = other.val;
+    ro = other.ro;
+    nul = other.nul;
+    d->type = other.d->type;
+    return *this;    
+}
+
+/*!
+    Returns TRUE if the field is equal to \a other; otherwise returns
+    FALSE. Fields are considered equal when the following field
+    properties are the same:
+
+    \list
+    \i \c name()
+    \i \c isNull()
+    \i \c value()
+    \i \c isReadOnly()
+    \endlist
+
+*/
+bool TQSqlField::operator==(const TQSqlField& other) const
+{
+    return ( nm == other.nm &&
+	     val == other.val &&
+	     ro == other.ro &&
+	     nul == other.nul &&
+	     d->type == other.d->type );
+}
+
+/*!
+    Destroys the object and frees any allocated resources.
+*/
+
+TQSqlField::~TQSqlField()
+{
+    delete d;
+}
+
+
+/*!
+    \fn TQVariant TQSqlField::value() const
+
+    Returns the value of the field as a TQVariant.
+*/
+
+/*!
+    Sets the value of the field to \a value. If the field is read-only
+    (isReadOnly() returns TRUE), nothing happens. If the data type of
+    \a value differs from the field's current data type, an attempt is
+    made to cast it to the proper type. This preserves the data type
+    of the field in the case of assignment, e.g. a TQString to an
+    integer data type. For example:
+
+    \code
+    TQSqlCursor cur( "Employee" );                 // 'Employee' table
+    TQSqlField* f = cur.field( "student_count" );  // an integer field
+    ...
+    f->setValue( myLineEdit->text() );		  // cast the line edit text to an integer
+    \endcode
+
+    \sa isReadOnly()
+*/
+
+void TQSqlField::setValue( const TQVariant& value )
+{
+    if ( isReadOnly() )
+	return;
+    if ( value.type() != d->type ) {
+	if ( !val.canCast( d->type ) )
+	     qWarning("TQSqlField::setValue: %s cannot cast from %s to %s",
+		      nm.local8Bit().data(), value.typeName(), TQVariant::typeToName( d->type ) );
+    }
+    val = value;
+
+    if ( value.isNull() )
+	nul = TRUE;
+    else
+	nul = val.type() == TQVariant::Invalid;
+}
+
+/*!
+    Clears the value of the field. If the field is read-only, nothing
+    happens. If \a nullify is TRUE (the default), the field is set to
+    NULL.
+*/
+
+void TQSqlField::clear( bool nullify )
+{
+    if ( isReadOnly() )
+	return;
+    TQVariant v;
+    v.cast( type() );
+    val = v;
+    if ( nullify )
+	nul = TRUE;
+}
+
+/*!
+    \fn void TQSqlField::setName( const TQString& name )
+
+    Sets the name of the field to \a name.
+*/
+
+void TQSqlField::setName( const TQString& name )
+{
+    nm = name;
+}
+
+/*!
+    \fn void TQSqlField::setNull()
+
+    Sets the field to NULL and clears the value using clear(). If the
+    field is read-only, nothing happens.
+
+    \sa isReadOnly() clear()
+*/
+
+void TQSqlField::setNull()
+{
+    clear( TRUE );
+}
+
+/*!
+    \fn void TQSqlField::setReadOnly( bool readOnly )
+
+    Sets the read only flag of the field's value to \a readOnly.
+
+    \sa setValue()
+*/
+void TQSqlField::setReadOnly( bool readOnly )
+{
+    ro = readOnly;
+}
+
+/*!
+    \fn TQString TQSqlField::name() const
+
+    Returns the name of the field.
+*/
+
+/*!
+    \fn TQVariant::Type TQSqlField::type() const
+
+    Returns the field's type as stored in the database.
+    Note that the actual value might have a different type,
+    Numerical values that are too large to store in a long
+    int or double are usually stored as strings to prevent
+    precision loss.
+*/
+
+/*!
+    \fn bool TQSqlField::isReadOnly() const
+
+    Returns TRUE if the field's value is read only; otherwise returns
+    FALSE.
+*/
+
+/*!
+    \fn bool TQSqlField::isNull() const
+
+    Returns TRUE if the field is currently NULL; otherwise returns
+    FALSE.
+*/
+
+
+/******************************************/
+/*******     TQSqlFieldInfo Impl      ******/
+/******************************************/
+
+struct TQSqlFieldInfoPrivate
+{
+    int retquired, len, prec, typeID;
+    uint generated: 1;
+    uint trim: 1;
+    uint calculated: 1;
+    TQString name;
+    TQString typeName;
+    TQVariant::Type typ;
+    TQVariant defValue;
+};
+
+/*!
+    \class TQSqlFieldInfo qsqlfield.h
+    \brief The TQSqlFieldInfo class stores meta data associated with a SQL field.
+
+    \ingroup database
+    \module sql
+
+    TQSqlFieldInfo objects only store meta data; field values are
+    stored in TQSqlField objects.
+
+    All values must be set in the constructor, and may be retrieved
+    using isRetquired(), type(), length(), precision(), defaultValue(),
+    name(), isGenerated() and typeID().
+*/
+
+/*!
+    Constructs a TQSqlFieldInfo with the following parameters:
+    \table
+    \row \i \a name  \i the name of the field.
+    \row \i \a typ   \i the field's type in a TQVariant.
+    \row \i \a retquired  \i greater than 0 if the field is retquired, 0
+    if its value can be NULL and less than 0 if it cannot be
+    determined whether the field is retquired or not.
+    \row \i \a len  \i the length of the field. Note that for
+    non-character types some databases return either the length in
+    bytes or the number of digits. -1 signifies that the length cannot
+    be determined.
+    \row \i \a prec  \i the precision of the field, or -1 if the field
+    has no precision or it cannot be determined.
+    \row \i \a defValue  \i the default value that is inserted into
+    the table if none is specified by the user. TQVariant() if there is
+    no default value or it cannot be determined.
+    \row \i \a typeID  \i the internal typeID of the database system
+    (only useful for low-level programming). 0 if unknown.
+    \row \i \a generated  \i TRUE indicates that this field should be
+    included in auto-generated SQL statments, e.g. in TQSqlCursor.
+    \row \i \a trim  \i TRUE indicates that widgets should remove
+    trailing whitespace from character fields. This does not affect
+    the field value but only its representation inside widgets.
+    \row \i \a calculated  \i TRUE indicates that the value of this
+    field is calculated. The value of calculated fields can by
+    modified by subclassing TQSqlCursor and overriding
+    TQSqlCursor::calculateField().
+    \endtable
+*/
+TQSqlFieldInfo::TQSqlFieldInfo( const TQString& name,
+		   TQVariant::Type typ,
+		   int retquired,
+		   int len,
+		   int prec,
+		   const TQVariant& defValue,
+		   int typeID,
+		   bool generated,
+		   bool trim,
+		   bool calculated )
+{
+    d = new TQSqlFieldInfoPrivate();
+    d->name = name;
+    d->typ = typ;
+    d->retquired = retquired;
+    d->len = len;
+    d->prec = prec;
+    d->defValue = defValue;
+    d->typeID = typeID;
+    d->generated = generated;
+    d->trim = trim;
+    d->calculated = calculated;
+}
+
+/*!
+    Constructs a copy of \a other.
+*/
+TQSqlFieldInfo::TQSqlFieldInfo( const TQSqlFieldInfo & other )
+{
+    d = new TQSqlFieldInfoPrivate( *(other.d) );
+}
+
+/*!
+    Creates a TQSqlFieldInfo object with the type and the name of the
+    TQSqlField \a other. If \a generated is TRUE this field will be
+    included in auto-generated SQL statments, e.g. in TQSqlCursor.
+*/
+TQSqlFieldInfo::TQSqlFieldInfo( const TQSqlField & other, bool generated )
+{
+    d = new TQSqlFieldInfoPrivate();
+    d->name = other.name();
+    d->typ = other.type();
+    d->retquired = -1;
+    d->len = -1;
+    d->prec = -1;
+    d->typeID = 0;
+    d->generated = generated;
+    d->trim = FALSE;
+    d->calculated = FALSE;
+}
+
+/*!
+    Destroys the object and frees any allocated resources.
+*/
+TQSqlFieldInfo::~TQSqlFieldInfo()
+{
+    delete d;
+}
+
+/*!
+    Assigns \a other to this field info and returns a reference to it.
+*/
+TQSqlFieldInfo& TQSqlFieldInfo::operator=( const TQSqlFieldInfo& other )
+{
+    delete d;
+    d = new TQSqlFieldInfoPrivate( *(other.d) );
+    return *this;
+}
+
+/*!
+    Returns TRUE if this fieldinfo is equal to \a f; otherwise returns
+    FALSE.
+
+    Two field infos are considered equal if all their attributes
+    match.
+*/
+bool TQSqlFieldInfo::operator==( const TQSqlFieldInfo& f ) const
+{
+    return ( d->name == f.d->name &&
+		d->typ == f.d->typ &&
+		d->retquired == f.d->retquired &&
+		d->len == f.d->len &&
+		d->prec == f.d->prec &&
+		d->defValue == f.d->defValue &&
+		d->typeID == f.d->typeID &&
+		d->generated == f.d->generated &&
+		d->trim == f.d->trim &&
+		d->calculated == f.d->calculated );
+}
+
+/*!
+    Returns an empty TQSqlField based on the information in this
+    TQSqlFieldInfo.
+*/
+TQSqlField TQSqlFieldInfo::toField() const
+{ return TQSqlField( d->name, d->typ ); }
+
+/*!
+    Returns a value greater than 0 if the field is retquired (NULL
+    values are not allowed), 0 if it isn't retquired (NULL values are
+    allowed) or less than 0 if it cannot be determined whether the
+    field is retquired or not.
+*/
+int TQSqlFieldInfo::isRetquired() const
+{ return d->retquired; }
+
+/*!
+    Returns the field's type or TQVariant::Invalid if the type is
+    unknown.
+*/
+TQVariant::Type TQSqlFieldInfo::type() const
+{ return d->typ; }
+
+/*!
+    Returns the field's length. For fields storing text the return
+    value is the maximum number of characters the field can hold. For
+    non-character fields some database systems return the number of
+    bytes needed or the number of digits allowed. If the length cannot
+    be determined -1 is returned.
+*/
+int TQSqlFieldInfo::length() const
+{ return d->len; }
+
+/*!
+    Returns the field's precision or -1 if the field has no precision
+    or it cannot be determined.
+*/
+int TQSqlFieldInfo::precision() const
+{ return d->prec; }
+
+/*!
+    Returns the field's default value or an empty TQVariant if the
+    field has no default value or the value couldn't be determined.
+    The default value is the value inserted in the database when it
+    is not explicitly specified by the user.
+*/
+TQVariant TQSqlFieldInfo::defaultValue() const
+{ return d->defValue; }
+
+/*!
+    Returns the name of the field in the SQL table.
+*/
+TQString TQSqlFieldInfo::name() const
+{ return d->name; }
+
+/*!
+    Returns the internal type identifier as returned from the database
+    system. The return value is 0 if the type is unknown.
+
+    \warning This information is only useful for low-level database
+    programming and is \e not database independent.
+*/
+int TQSqlFieldInfo::typeID() const
+{ return d->typeID; }
+
+/*!
+    Returns TRUE if the field should be included in auto-generated
+    SQL statments, e.g. in TQSqlCursor; otherwise returns FALSE.
+
+    \sa setGenerated()
+*/
+bool TQSqlFieldInfo::isGenerated() const
+{ return d->generated; }
+
+/*!
+    Returns TRUE if trailing whitespace should be removed from
+    character fields; otherwise returns FALSE.
+
+    \sa setTrim()
+*/
+bool TQSqlFieldInfo::isTrim() const
+{ return d->trim; }
+
+/*!
+    Returns TRUE if the field is calculated; otherwise returns FALSE.
+
+    \sa setCalculated()
+*/
+bool TQSqlFieldInfo::isCalculated() const
+{ return d->calculated; }
+
+/*!
+    If \a trim is TRUE widgets should remove trailing whitespace from
+    character fields. This does not affect the field value but only
+    its representation inside widgets.
+
+    \sa isTrim()
+*/
+void TQSqlFieldInfo::setTrim( bool trim )
+{ d->trim = trim; }
+
+/*!
+    \a gen set to FALSE indicates that this field should not appear
+    in auto-generated SQL statements (for example in TQSqlCursor).
+
+    \sa isGenerated()
+*/
+void TQSqlFieldInfo::setGenerated( bool gen )
+{ d->generated = gen; }
+
+/*!
+    \a calc set to TRUE indicates that this field is a calculated
+    field. The value of calculated fields can by modified by subclassing
+    TQSqlCursor and overriding TQSqlCursor::calculateField().
+
+    \sa isCalculated()
+*/
+void TQSqlFieldInfo::setCalculated( bool calc )
+{ d->calculated = calc; }
+
+#endif