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QxSqlRelation_OneToOne.h
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    00001 /****************************************************************************
    00002 **
    00003 ** http://www.qxorm.com/
    00004 ** Copyright (C) 2013 Lionel Marty (contact@qxorm.com)
    00005 **
    00006 ** This file is part of the QxOrm library
    00007 **
    00008 ** This software is provided 'as-is', without any express or implied
    00009 ** warranty. In no event will the authors be held liable for any
    00010 ** damages arising from the use of this software
    00011 **
    00012 ** Commercial Usage
    00013 ** Licensees holding valid commercial QxOrm licenses may use this file in
    00014 ** accordance with the commercial license agreement provided with the
    00015 ** Software or, alternatively, in accordance with the terms contained in
    00016 ** a written agreement between you and Lionel Marty
    00017 **
    00018 ** GNU General Public License Usage
    00019 ** Alternatively, this file may be used under the terms of the GNU
    00020 ** General Public License version 3.0 as published by the Free Software
    00021 ** Foundation and appearing in the file 'license.gpl3.txt' included in the
    00022 ** packaging of this file. Please review the following information to
    00023 ** ensure the GNU General Public License version 3.0 requirements will be
    00024 ** met : http://www.gnu.org/copyleft/gpl.html
    00025 **
    00026 ** If you are unsure which license is appropriate for your use, or
    00027 ** if you have questions regarding the use of this file, please contact :
    00028 ** contact@qxorm.com
    00029 **
    00030 ****************************************************************************/
    00031
    00032 #ifndef _QX_SQL_RELATION_ONE_TO_ONE_H_
    00033 #define _QX_SQL_RELATION_ONE_TO_ONE_H_
    00034
    00035 #ifdef _MSC_VER
    00036 #pragma once
    00037 #endif
    00038
    00046 #include <QxDao/QxSqlRelation.h>
    00047
    00048 namespace qx {
    00049
    00054 template <class DataType, class Owner>
    00055 class QxSqlRelation_OneToOne : public QxSqlRelation<DataType, Owner>
    00056 {
    00057
    00058 private:
    00059
    00060    typedef typename QxSqlRelation<DataType, Owner>::type_owner type_owner;
    00061    typedef typename QxSqlRelation<DataType, Owner>::type_data type_data;
    00062
    00063 public:
    00064
    00065    QxSqlRelation_OneToOne(IxDataMember * p) : QxSqlRelation<DataType, Owner>(p) { this->m_eRelationType = qx::IxSqlRelation::one_to_one; }
    00066    virtual ~QxSqlRelation_OneToOne() { ; }
    00067
    00068    virtual QString getDescription() const                                     { return "relation one-to-one"; }
    00069    virtual QString getExtraTable() const                                      { return ""; }
    00070    virtual QString createExtraTable() const                                   { return ""; }
    00071    virtual bool getCartesianProduct() const                                   { return false; }
    00072    virtual void createTable(QxSqlRelationParams & params) const               { Q_UNUSED(params); }
    00073    virtual void lazySelect(QxSqlRelationParams & params) const                { Q_UNUSED(params); }
    00074    virtual void lazyFrom(QxSqlRelationParams & params) const                  { Q_UNUSED(params); }
    00075    virtual void eagerFrom(QxSqlRelationParams & params) const                 { Q_UNUSED(params); }
    00076    virtual void lazyJoin(QxSqlRelationParams & params) const                  { Q_UNUSED(params); }
    00077    virtual void lazyWhere(QxSqlRelationParams & params) const                 { Q_UNUSED(params); }
    00078    virtual void eagerWhere(QxSqlRelationParams & params) const                { Q_UNUSED(params); }
    00079    virtual void lazyWhereSoftDelete(QxSqlRelationParams & params) const       { Q_UNUSED(params); }
    00080    virtual void lazyFetch_ResolveInput(QxSqlRelationParams & params) const    { Q_UNUSED(params); }
    00081    virtual void eagerFetch_ResolveInput(QxSqlRelationParams & params) const   { Q_UNUSED(params); }
    00082    virtual void lazyFetch_ResolveOutput(QxSqlRelationParams & params) const   { Q_UNUSED(params); }
    00083    virtual void lazyInsert(QxSqlRelationParams & params) const                { Q_UNUSED(params); }
    00084    virtual void lazyInsert_Values(QxSqlRelationParams & params) const         { Q_UNUSED(params); }
    00085    virtual void lazyUpdate(QxSqlRelationParams & params) const                { Q_UNUSED(params); }
    00086    virtual void lazyInsert_ResolveInput(QxSqlRelationParams & params) const   { Q_UNUSED(params); }
    00087    virtual void lazyUpdate_ResolveInput(QxSqlRelationParams & params) const   { Q_UNUSED(params); }
    00088    virtual QSqlError onBeforeSave(QxSqlRelationParams & params) const         { Q_UNUSED(params); return QSqlError(); }
    00089
    00090    virtual QSqlError onAfterSave(QxSqlRelationParams & params) const
    00091    {
    00092       if (this->isNullData(params)) { return QSqlError(); }
    00093       if (! params.recursiveMode()) { return qx::dao::save(this->getData(params), (& params.database())); }
    00094       else { return qx::dao::save_with_relation_recursive(this->getData(params), params.saveMode(), (& params.database()), (& params)); }
    00095    }
    00096
    00097    virtual QVariant getIdFromQuery(bool bEager, QxSqlRelationParams & params) const
    00098    { return this->getIdFromQuery_OneToOne(bEager, params); }
    00099
    00100    virtual void updateOffset(bool bEager, QxSqlRelationParams & params) const
    00101    { this->updateOffset_OneToOne(bEager, params); }
    00102
    00103    virtual void eagerSelect(QxSqlRelationParams & params) const
    00104    { this->eagerSelect_OneToOne(params); }
    00105
    00106    virtual void eagerJoin(QxSqlRelationParams & params) const
    00107    { this->eagerJoin_OneToOne(params); }
    00108
    00109    virtual void eagerWhereSoftDelete(QxSqlRelationParams & params) const
    00110    { this->eagerWhereSoftDelete_OneToOne(params); }
    00111
    00112    virtual void * eagerFetch_ResolveOutput(QxSqlRelationParams & params) const
    00113    {
    00114       if (! this->verifyOffset(params, true)) { return NULL; }
    00115       QSqlQuery & query = params.query();
    00116       IxDataMember * p = NULL; IxDataMember * pId = this->getDataId(); qAssert(pId); if (! pId) { return NULL; }
    00117       long lIndex = 0; long lOffsetId = (pId ? pId->getNameCount() : 0); bool bValidId(false);
    00118       long lOffsetOld = params.offset(); this->updateOffset(true, params);
    00119       long lRelation = 0; IxSqlRelation * pRelation = NULL;
    00120       for (int i = 0; i < pId->getNameCount(); i++)
    00121       { QVariant v = query.value(lOffsetOld + i); bValidId = (bValidId || qx::trait::is_valid_primary_key(v)); }
    00122       if (! bValidId) { return NULL; }
    00123       type_data & currData = this->getData(params);
    00124       if (! this->callTriggerBeforeFetch(currData, params)) { return NULL; }
    00125       for (int i = 0; i < pId->getNameCount(); i++)
    00126       { QVariant v = query.value(lOffsetOld + i); pId->fromVariant((& currData), v, i); }
    00127       while ((p = this->nextData(lIndex)))
    00128       { p->fromVariant((& currData), query.value(lIndex + lOffsetOld + lOffsetId - 1)); }
    00129
    00130       if (params.relationX())
    00131       {
    00132          long lOffsetCurrent = (lIndex + lOffsetOld + lOffsetId);
    00133          long lIndexOwnerOld = params.indexOwner(); params.setIndexOwner(params.index());
    00134          void * pOwnerOld = params.owner(); params.setOwner(& currData);
    00135          lOffsetOld = params.offset(); params.setOffset(lOffsetCurrent);
    00136          while ((pRelation = this->nextRelation(lRelation)))
    00137          { if (this->addLazyRelation(params, pRelation)) { pRelation->lazyFetch_ResolveOutput(params); } }
    00138          params.setOwner(pOwnerOld); params.setOffset(lOffsetOld);
    00139          params.setIndexOwner(lIndexOwnerOld);
    00140       }
    00141
    00142       if (! this->callTriggerAfterFetch(currData, params)) { return NULL; }
    00143       return (& currData);
    00144    }
    00145
    00146 };
    00147
    00148 } // namespace qx
    00149
    00150 #endif // _QX_SQL_RELATION_ONE_TO_ONE_H_