|
|
|
/****************************************************************************
|
|
|
|
**
|
|
|
|
** 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 requirements 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 "ntqsqlfield.h"
|
|
|
|
|
|
|
|
#ifndef QT_NO_SQL
|
|
|
|
|
|
|
|
|
|
|
|
/*!
|
|
|
|
\class TQSqlField ntqsqlfield.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 ) )
|
|
|
|
tqWarning("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 required, len, prec, typeID;
|
|
|
|
uint generated: 1;
|
|
|
|
uint trim: 1;
|
|
|
|
uint calculated: 1;
|
|
|
|
TQString name;
|
|
|
|
TQString typeName;
|
|
|
|
TQVariant::Type typ;
|
|
|
|
TQVariant defValue;
|
|
|
|
};
|
|
|
|
|
|
|
|
/*!
|
|
|
|
\class TQSqlFieldInfo ntqsqlfield.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 isRequired(), 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 required \i greater than 0 if the field is required, 0
|
|
|
|
if its value can be NULL and less than 0 if it cannot be
|
|
|
|
determined whether the field is required 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 required,
|
|
|
|
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->required = required;
|
|
|
|
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->required = -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->required == f.d->required &&
|
|
|
|
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 required (NULL
|
|
|
|
values are not allowed), 0 if it isn't required (NULL values are
|
|
|
|
allowed) or less than 0 if it cannot be determined whether the
|
|
|
|
field is required or not.
|
|
|
|
*/
|
|
|
|
int TQSqlFieldInfo::isRequired() const
|
|
|
|
{ return d->required; }
|
|
|
|
|
|
|
|
/*!
|
|
|
|
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
|