/usr/include/qdjango/db/QDjangoWhere.h is in libqdjango-dev 0.4.0-1ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 | /*
* Copyright (C) 2010-2012 Jeremy Lainé
* Contact: http://code.google.com/p/qdjango/
*
* This file is part of the QDjango Library.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
#ifndef QDJANGO_WHERE_H
#define QDJANGO_WHERE_H
#include <QSharedDataPointer>
#include <QVariant>
#include "QDjango_p.h"
class QDjangoMetaModel;
class QDjangoQuery;
class QDjangoWherePrivate;
/** \brief The QDjangoWhere class expresses an SQL constraint.
*
* The QDjangoWhere class is used to build SQL WHERE statements. In its
* simplest form a QDjangoWhere expresses a constraint on a column value.
*
* QDjangoWhere instances can be negated using the "!" unary operator
* or combined using the "&&" and "||" boolean operators.
*
* \ingroup Database
*/
class QDJANGO_EXPORT QDjangoWhere
{
public:
/** A comparison operation on a database column value. */
enum Operation
{
/** No comparison, always returns true. */
None,
/** Returns true if the column value is equal to the given value. */
Equals,
/** Returns true if the column value is not equal to the given value. */
NotEquals,
/** Returns true if the column value is greater than the given value. */
GreaterThan,
/** Returns true if the column value is less than the given value. */
LessThan,
/** Returns true if the column value is greater or equal to the given value. */
GreaterOrEquals,
/** Returns true if the column value is less or equal to the given value. */
LessOrEquals,
/** Returns true if the column value starts with the given value (strings only). */
StartsWith,
/** Returns true if the column value ends with the given value (strings only). */
EndsWith,
/** Returns true if the column value contains the given value (strings only). */
Contains,
/** Returns true if the column value is one of the given values. */
IsIn,
/** Returns true if the column value is null. */
IsNull
};
QDjangoWhere();
QDjangoWhere(const QDjangoWhere &other);
QDjangoWhere(const QString &key, QDjangoWhere::Operation operation, QVariant value);
~QDjangoWhere();
QDjangoWhere& operator=(const QDjangoWhere &other);
QDjangoWhere operator!() const;
QDjangoWhere operator&&(const QDjangoWhere &other) const;
QDjangoWhere operator||(const QDjangoWhere &other) const;
void bindValues(QDjangoQuery &query) const;
bool isAll() const;
bool isNone() const;
QString sql(const QSqlDatabase &db) const;
private:
QSharedDataPointer<QDjangoWherePrivate> d;
friend class QDjangoCompiler;
};
#endif
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