QxOrm  1.4.3
C++ Object Relational Mapping library
QxSqlRelation_ManyToOne.h
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00031 
00032 #ifndef _QX_SQL_RELATION_MANY_TO_ONE_H_
00033 #define _QX_SQL_RELATION_MANY_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_ManyToOne : 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_ManyToOne(IxDataMember * p) : QxSqlRelation<DataType, Owner>(p) { this->m_eRelationType = qx::IxSqlRelation::many_to_one; }
00066    virtual ~QxSqlRelation_ManyToOne() { ; }
00067 
00068    virtual QString getDescription() const                                     { return "relation many-to-one"; }
00069    virtual QString getExtraTable() const                                      { return ""; }
00070    virtual QString createExtraTable() const                                   { return ""; }
00071    virtual bool getCartesianProduct() const                                   { return false; }
00072    virtual void lazyFrom(QxSqlRelationParams & params) const                  { Q_UNUSED(params); }
00073    virtual void eagerFrom(QxSqlRelationParams & params) const                 { Q_UNUSED(params); }
00074    virtual void lazyJoin(QxSqlRelationParams & params) const                  { Q_UNUSED(params); }
00075    virtual void lazyWhere(QxSqlRelationParams & params) const                 { Q_UNUSED(params); }
00076    virtual void eagerWhere(QxSqlRelationParams & params) const                { Q_UNUSED(params); }
00077    virtual void lazyWhereSoftDelete(QxSqlRelationParams & params) const       { Q_UNUSED(params); }
00078    virtual void lazyFetch_ResolveInput(QxSqlRelationParams & params) const    { Q_UNUSED(params); }
00079    virtual void eagerFetch_ResolveInput(QxSqlRelationParams & params) const   { Q_UNUSED(params); }
00080    virtual QSqlError onAfterSave(QxSqlRelationParams & params) const          { Q_UNUSED(params); return QSqlError(); }
00081 
00082    virtual QSqlError onBeforeSave(QxSqlRelationParams & params) const
00083    {
00084       if (this->isNullData(params) || params.recursiveMode()) { return QSqlError(); }
00085       return qx::dao::save(this->getData(params), (& params.database()));
00086    }
00087 
00088    virtual void lazyUpdate_ResolveInput(QxSqlRelationParams & params) const
00089    { this->lazyInsert_ResolveInput(params); }
00090 
00091    virtual QVariant getIdFromQuery(bool bEager, QxSqlRelationParams & params) const
00092    { return this->getIdFromQuery_ManyToOne(bEager, params); }
00093 
00094    virtual void updateOffset(bool bEager, QxSqlRelationParams & params) const
00095    { this->updateOffset_ManyToOne(bEager, params); }
00096 
00097    virtual void createTable(QxSqlRelationParams & params) const
00098    { this->createTable_ManyToOne(params); }
00099 
00100    virtual void lazySelect(QxSqlRelationParams & params) const
00101    { this->lazySelect_ManyToOne(params); }
00102 
00103    virtual void eagerSelect(QxSqlRelationParams & params) const
00104    { this->eagerSelect_ManyToOne(params); }
00105 
00106    virtual void eagerJoin(QxSqlRelationParams & params) const
00107    { this->eagerJoin_ManyToOne(params); }
00108 
00109    virtual void eagerWhereSoftDelete(QxSqlRelationParams & params) const
00110    { this->eagerWhereSoftDelete_ManyToOne(params); }
00111 
00112    virtual void lazyFetch_ResolveOutput(QxSqlRelationParams & params) const
00113    {
00114       if (! this->verifyOffset(params, false)) { return; }
00115       QSqlQuery & query = params.query();
00116       typename QxSqlRelation<DataType, Owner>::type_owner & currOwner = this->getOwner(params);
00117       IxDataMember * pData = this->getDataMember(); qAssert(pData); if (! pData) { return; }
00118       bool bValidId(false);
00119       for (int i = 0; i < pData->getNameCount(); i++)
00120       { QVariant vId = query.value(params.offset() + i); bValidId = (bValidId || qx::trait::is_valid_primary_key(vId)); }
00121       if (pData && bValidId) { for (int i = 0; i < pData->getNameCount(); i++) { pData->fromVariant((& currOwner), query.value(params.offset() + i), i, qx::cvt::context::e_database); } }
00122       this->updateOffset(false, params);
00123    }
00124 
00125    virtual void * eagerFetch_ResolveOutput(QxSqlRelationParams & params) const
00126    {
00127       if (! this->verifyOffset(params, false)) { return NULL; }
00128       QSqlQuery & query = params.query();
00129       typename QxSqlRelation<DataType, Owner>::type_owner & currOwner = this->getOwner(params);
00130       IxDataMember * pData = this->getDataMember(); qAssert(pData); if (! pData) { return NULL; }
00131       IxDataMember * p = NULL; IxDataMember * pId = this->getDataId(); qAssert(pId); if (! pId) { return NULL; }
00132       long lIndex = 0; long lOffsetId = (pId ? pId->getNameCount() : 0); long lOffsetData = (pData ? pData->getNameCount() : 0);
00133       long lOffsetOld = params.offset(); this->updateOffset(true, params);
00134       long lOffsetRelation = (lOffsetOld + lOffsetId + lOffsetData);
00135       long lRelation = 0; IxSqlRelation * pRelation = NULL;
00136       bool bValidId(false), bValidIdBis(false);
00137       for (int i = 0; i < pData->getNameCount(); i++)
00138       { QVariant vId = query.value(lOffsetOld + i); bValidId = (bValidId || qx::trait::is_valid_primary_key(vId)); }
00139       for (int i = 0; i < pId->getNameCount(); i++)
00140       { QVariant vIdBis = query.value(lOffsetOld + lOffsetData + i); bValidIdBis = (bValidIdBis || qx::trait::is_valid_primary_key(vIdBis)); }
00141       if (pData && bValidId) { for (int i = 0; i < pData->getNameCount(); i++) { pData->fromVariant((& currOwner), query.value(lOffsetOld + i), i, qx::cvt::context::e_database); } }
00142       if (! bValidIdBis) { return NULL; }
00143 
00144       type_data & currData = this->getData(params);
00145       if (! this->callTriggerBeforeFetch(currData, params)) { return NULL; }
00146       if (pId) { for (int i = 0; i < pId->getNameCount(); i++) { pId->fromVariant((& currData), query.value(lOffsetOld + lOffsetData + i), i, qx::cvt::context::e_database); } }
00147       while ((p = this->nextData(lIndex)))
00148       { if (params.checkColumns(p->getKey())) { p->fromVariant((& currData), query.value(lOffsetRelation++), -1, qx::cvt::context::e_database); } }
00149 
00150       if (params.relationX())
00151       {
00152          long lIndexOwnerOld = params.indexOwner(); params.setIndexOwner(params.index());
00153          void * pOwnerOld = params.owner(); params.setOwner(& currData);
00154          lOffsetOld = params.offset(); params.setOffset(lOffsetRelation++);
00155          while ((pRelation = this->nextRelation(lRelation)))
00156          { if (this->addLazyRelation(params, pRelation)) { pRelation->lazyFetch_ResolveOutput(params); } }
00157          params.setOwner(pOwnerOld); params.setOffset(lOffsetOld);
00158          params.setIndexOwner(lIndexOwnerOld);
00159       }
00160 
00161       if (! this->callTriggerAfterFetch(currData, params)) { return NULL; }
00162       return (& currData);
00163    }
00164 
00165    virtual void lazyInsert(QxSqlRelationParams & params) const
00166    { this->lazyInsert_ManyToOne(params); }
00167 
00168    virtual void lazyInsert_Values(QxSqlRelationParams & params) const
00169    { this->lazyInsert_Values_ManyToOne(params); }
00170 
00171    virtual void lazyUpdate(QxSqlRelationParams & params) const
00172    { this->lazyUpdate_ManyToOne(params); }
00173 
00174    virtual void lazyInsert_ResolveInput(QxSqlRelationParams & params) const
00175    {
00176       QSqlQuery & query = params.query();
00177       typename QxSqlRelation<DataType, Owner>::type_owner & currOwner = this->getOwner(params);
00178       IxDataMember * pData = this->getDataMember(); qAssert(pData);
00179       if (pData) { pData->setSqlPlaceHolder(query, (& currOwner)); }
00180    }
00181 
00182 };
00183 
00184 } // namespace qx
00185 
00186 #endif // _QX_SQL_RELATION_MANY_TO_ONE_H_