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IxDao_Helper.h
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    00001 /****************************************************************************
    00002 **
    00003 ** http://www.qxorm.com/
    00004 ** http://sourceforge.net/projects/qxorm/
    00005 ** Original file by Lionel Marty
    00006 **
    00007 ** This file is part of the QxOrm library
    00008 **
    00009 ** This software is provided 'as-is', without any express or implied
    00010 ** warranty. In no event will the authors be held liable for any
    00011 ** damages arising from the use of this software.
    00012 **
    00013 ** GNU Lesser General Public License Usage
    00014 ** This file must be used under the terms of the GNU Lesser
    00015 ** General Public License version 2.1 as published by the Free Software
    00016 ** Foundation and appearing in the file 'license.lgpl.txt' included in the
    00017 ** packaging of this file.  Please review the following information to
    00018 ** ensure the GNU Lesser General Public License version 2.1 requirements
    00019 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
    00020 **
    00021 ** If you have questions regarding the use of this file, please contact :
    00022 ** contact@qxorm.com
    00023 **
    00024 ****************************************************************************/
    00025
    00026 #ifndef _IX_DAO_HELPER_H_
    00027 #define _IX_DAO_HELPER_H_
    00028
    00029 #ifdef _MSC_VER
    00030 #pragma once
    00031 #endif
    00032
    00040 #include <boost/scoped_ptr.hpp>
    00041
    00042 #include <QtSql/qsqldatabase.h>
    00043 #include <QtSql/qsqlquery.h>
    00044 #include <QtSql/qsqlerror.h>
    00045 #include <QtSql/qsqldriver.h>
    00046
    00047 #include <QxTraits/get_primary_key.h>
    00048 #include <QxTraits/is_valid_primary_key.h>
    00049
    00050 #include <QxDao/QxSqlDatabase.h>
    00051 #include <QxDao/QxSqlQueryBuilder.h>
    00052 #include <QxDao/QxSqlQueryHelper.h>
    00053 #include <QxDao/QxSqlQuery.h>
    00054 #include <QxDao/IxSqlRelation.h>
    00055
    00056 #include <QxCollection/QxCollection.h>
    00057
    00058 #include <QxDataMember/IxDataMemberX.h>
    00059
    00060 namespace qx {
    00061 namespace dao {
    00062 namespace detail {
    00063
    00068 class QX_DLL_EXPORT IxDao_Helper
    00069 {
    00070
    00071 protected:
    00072
    00073    QTime          m_time;
    00074    QSqlDatabase   m_database;
    00075    QSqlQuery      m_query;
    00076    QSqlError      m_error;
    00077    QString        m_context;
    00078    long           m_lDataCount;
    00079    bool           m_bTransaction;
    00080    bool           m_bQuiet;
    00081    bool           m_bTraceQuery;
    00082    bool           m_bTraceRecord;
    00083    bool           m_bCartesianProduct;
    00084    QStringList    m_lstColumns;
    00085
    00086    qx::IxSqlQueryBuilder_ptr  m_pQueryBuilder;
    00087    qx::IxDataMemberX *        m_pDataMemberX;
    00088    qx::IxDataMember *         m_pDataId;
    00089    qx::QxSqlQuery             m_qxQuery;
    00090
    00091    typedef qx::QxCollection<QString, qx::IxSqlRelation *> type_lst_relation;
    00092    typedef boost::scoped_ptr< type_lst_relation > type_lst_relation_ptr;
    00093    type_lst_relation_ptr m_pSqlRelationX;
    00094
    00095 protected:
    00096
    00097    IxDao_Helper();
    00098    virtual ~IxDao_Helper();
    00099
    00100 public:
    00101
    00102    bool isValid() const;
    00103    bool hasFeature(QSqlDriver::DriverFeature ft) const;
    00104
    00105    QSqlDatabase & database();
    00106    const QSqlDatabase & database() const;
    00107    QSqlQuery & query();
    00108    const QSqlQuery & query() const;
    00109    QSqlError & error();
    00110    const QSqlError & error() const;
    00111    qx::QxSqlQuery & qxQuery();
    00112    const qx::QxSqlQuery & qxQuery() const;
    00113    qx::IxSqlQueryBuilder & builder();
    00114    const qx::IxSqlQueryBuilder & builder() const;
    00115    qx::IxDataMemberX * getDataMemberX() const;
    00116    long getDataCount() const;
    00117    qx::IxDataMember * getDataId() const;
    00118    qx::IxDataMember * nextData(long & l) const;
    00119    QString sql() const;
    00120    type_lst_relation * getSqlRelationX() const;
    00121    bool getCartesianProduct() const;
    00122    QStringList getSqlColumns() const;
    00123    void setSqlColumns(const QStringList & lst);
    00124
    00125    QSqlError errFailed();
    00126    QSqlError errEmpty();
    00127    QSqlError errNoData();
    00128    QSqlError errInvalidId();
    00129    QSqlError errInvalidRelation();
    00130
    00131    bool transaction();
    00132    bool nextRecord();
    00133    void updateError(const QSqlError & error);
    00134    void quiet();
    00135    bool exec();
    00136
    00137    bool updateSqlRelationX(const QStringList & relation);
    00138    void dumpRecord() const;
    00139    void addQuery(const qx::QxSqlQuery & query, bool bResolve);
    00140
    00141    template <class U>
    00142    inline bool isValidPrimaryKey(const U & u)
    00143    { return (m_pDataId && qx::trait::is_valid_primary_key(m_pDataId->toVariant(& u))); }
    00144
    00145    template <class U>
    00146    inline void updateLastInsertId(U & u)
    00147    {
    00148       if (m_pDataId && m_pDataId->getAutoIncrement() && this->hasFeature(QSqlDriver::LastInsertId))
    00149       { m_pDataId->fromVariant((& u), m_query.lastInsertId()); }
    00150    }
    00151
    00152 protected:
    00153
    00154    virtual void updateQueryBuilder();
    00155
    00156    QSqlError updateError(const QString & sError);
    00157    void init(QSqlDatabase * pDatabase, const QString & sContext);
    00158    void terminate();
    00159
    00160 };
    00161
    00162 } // namespace detail
    00163 } // namespace dao
    00164 } // namespace qx
    00165
    00166 #endif // _IX_DAO_HELPER_H_

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