QxOrm 1.4.9
C++ Object Relational Mapping library
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QxSqlRelation_ManyToOne.h
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31
32#ifndef _QX_SQL_RELATION_MANY_TO_ONE_H_
33#define _QX_SQL_RELATION_MANY_TO_ONE_H_
34
35#ifdef _MSC_VER
36#pragma once
37#endif
38
46#include <QxDao/QxSqlRelation.h>
47
48namespace qx {
49
54template <class DataType, class Owner>
55class QxSqlRelation_ManyToOne : public QxSqlRelation<DataType, Owner>
56{
57
58private:
59
62
63public:
64
67
68 virtual QString getDescription() const { return "relation many-to-one"; }
69 virtual QString createExtraTable() const { return ""; }
70 virtual bool getCartesianProduct() const { return false; }
71 virtual void lazyFrom(QxSqlRelationParams & params) const { Q_UNUSED(params); }
72 virtual void eagerFrom(QxSqlRelationParams & params) const { Q_UNUSED(params); }
73 virtual void lazyJoin(QxSqlRelationParams & params) const { Q_UNUSED(params); }
74 virtual void lazyWhere(QxSqlRelationParams & params) const { Q_UNUSED(params); }
75 virtual void eagerWhere(QxSqlRelationParams & params) const { Q_UNUSED(params); }
76 virtual void lazyWhereSoftDelete(QxSqlRelationParams & params) const { Q_UNUSED(params); }
77 virtual void lazyFetch_ResolveInput(QxSqlRelationParams & params) const { Q_UNUSED(params); }
78 virtual void eagerFetch_ResolveInput(QxSqlRelationParams & params) const { Q_UNUSED(params); }
79 virtual QSqlError onAfterSave(QxSqlRelationParams & params) const { Q_UNUSED(params); return QSqlError(); }
80
81 virtual QSqlError onBeforeSave(QxSqlRelationParams & params) const
82 {
83 if (this->isNullData(params) || params.recursiveMode()) { return QSqlError(); }
84 return qx::dao::save(this->getData(params), (& params.database()));
85 }
86
87 virtual void lazyUpdate_ResolveInput(QxSqlRelationParams & params) const
88 { this->lazyInsert_ResolveInput(params); }
89
90 virtual QVariant getIdFromQuery(bool bEager, QxSqlRelationParams & params, int iOffset, int iNameIndex) const
91 { return this->getIdFromQuery_ManyToOne(bEager, params, iOffset, iNameIndex); }
92
93 virtual void updateOffset(bool bEager, QxSqlRelationParams & params) const
94 { this->updateOffset_ManyToOne(bEager, params); }
95
96 virtual void createTable(QxSqlRelationParams & params) const
97 { this->createTable_ManyToOne(params); }
98
99 virtual void lazySelect(QxSqlRelationParams & params) const
100 { this->lazySelect_ManyToOne(params); }
101
102 virtual void eagerSelect(QxSqlRelationParams & params) const
103 { this->eagerSelect_ManyToOne(params); }
104
105 virtual void eagerJoin(QxSqlRelationParams & params) const
106 { this->eagerJoin_ManyToOne(params); }
107
108 virtual void eagerWhereSoftDelete(QxSqlRelationParams & params) const
109 { this->eagerWhereSoftDelete_ManyToOne(params); }
110
111 virtual void lazyFetch_ResolveOutput(QxSqlRelationParams & params) const
112 {
113 if (! this->verifyOffset(params, false)) { return; }
114 QSqlQuery & query = params.query();
115 typename QxSqlRelation<DataType, Owner>::type_owner & currOwner = this->getOwner(params);
116 IxDataMember * pData = this->getDataMember(); qAssert(pData); if (! pData) { return; }
117 bool bValidId(false);
118 for (int i = 0; i < pData->getNameCount(); i++)
119 { QVariant vId = query.value(params.offset() + i); bValidId = (bValidId || qx::trait::is_valid_primary_key(vId)); }
120 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); } }
121 this->updateOffset(false, params);
122 }
123
124 virtual void * eagerFetch_ResolveOutput(QxSqlRelationParams & params) const
125 {
126 if (! this->verifyOffset(params, false)) { return NULL; }
127 QSqlQuery & query = params.query();
128 typename QxSqlRelation<DataType, Owner>::type_owner & currOwner = this->getOwner(params);
129 IxDataMember * pData = this->getDataMember(); qAssert(pData); if (! pData) { return NULL; }
130 IxDataMember * p = NULL; IxDataMember * pId = this->getDataId(); qAssert(pId); if (! pId) { return NULL; }
131 long lIndex = 0; long lOffsetId = ((pId && (! params.isDistinct())) ? pId->getNameCount() : 0);
132 long lOffsetData = ((pData && (! params.isDistinct())) ? pData->getNameCount() : 0);
133 long lOffsetOld = params.offset(); this->updateOffset(true, params);
134 long lOffsetRelation = (lOffsetOld + lOffsetId + lOffsetData);
135 long lRelation = 0; IxSqlRelation * pRelation = NULL;
136 bool bValidId(false), bValidIdBis(false);
137
138 if (! params.isDistinct())
139 {
140 for (int i = 0; i < pData->getNameCount(); i++)
141 { QVariant vId = query.value(lOffsetOld + i); bValidId = (bValidId || qx::trait::is_valid_primary_key(vId)); }
142 for (int i = 0; i < pId->getNameCount(); i++)
143 { QVariant vIdBis = query.value(lOffsetOld + lOffsetData + i); bValidIdBis = (bValidIdBis || qx::trait::is_valid_primary_key(vIdBis)); }
144 if (pData && bValidId) { for (int i = 0; i < pData->getNameCount(); i++) { pData->fromVariant((& currOwner), query.value(lOffsetOld + i), i, qx::cvt::context::e_database); } }
145 if (! bValidIdBis) { return NULL; }
146 }
147
148 type_data & currData = this->getData(params);
149 if (! this->callTriggerBeforeFetch(currData, params)) { return NULL; }
150
151 if (pId && (! params.isDistinct()))
152 { for (int i = 0; i < pId->getNameCount(); i++) { pId->fromVariant((& currData), query.value(lOffsetOld + lOffsetData + i), i, qx::cvt::context::e_database); } }
153 while ((p = this->nextData(lIndex)))
154 { if (params.checkColumns(p->getKey())) { p->fromVariant((& currData), query.value(lOffsetRelation++), -1, qx::cvt::context::e_database); } }
155
156 if (params.relationX())
157 {
158 QString sOldCustomAliasOwner = params.getCustomAliasOwner(); params.setCustomAliasOwner(params.getCustomAlias());
159 long lIndexOwnerOld = params.indexOwner(); params.setIndexOwner(params.index());
160 void * pOwnerOld = params.owner(); params.setOwner(& currData);
161 lOffsetOld = params.offset(); params.setOffset(lOffsetRelation++);
162 while ((pRelation = this->nextRelation(lRelation)))
163 { if (this->addLazyRelation(params, pRelation)) { pRelation->lazyFetch_ResolveOutput(params); } }
164 params.setOwner(pOwnerOld); params.setOffset(lOffsetOld);
165 params.setCustomAliasOwner(sOldCustomAliasOwner);
166 params.setIndexOwner(lIndexOwnerOld);
167 }
168
169 if (! this->callTriggerAfterFetch(currData, params)) { return NULL; }
170 return (& currData);
171 }
172
173 virtual void lazyInsert(QxSqlRelationParams & params) const
174 { this->lazyInsert_ManyToOne(params); }
175
176 virtual void lazyInsert_Values(QxSqlRelationParams & params) const
177 { this->lazyInsert_Values_ManyToOne(params); }
178
179 virtual void lazyUpdate(QxSqlRelationParams & params) const
180 { this->lazyUpdate_ManyToOne(params); }
181
182 virtual void lazyInsert_ResolveInput(QxSqlRelationParams & params) const
183 {
184 QSqlQuery & query = params.query();
185 typename QxSqlRelation<DataType, Owner>::type_owner & currOwner = this->getOwner(params);
186 IxDataMember * pData = this->getDataMember(); qAssert(pData);
187 if (pData) { pData->setSqlPlaceHolder(query, (& currOwner), "", "", false, params.getLstExecBatch()); }
188 }
189
190};
191
192} // namespace qx
193
194#endif // _QX_SQL_RELATION_MANY_TO_ONE_H_
#define qAssert(x)
Definition QxMacro.h:52
Base class for all relationships defined between 2 classes (or between 2 tables in database)
qx::IxDataMember : common interface for all class properties registered into QxOrm context
QString getKey() const
virtual qx_bool fromVariant(void *pOwner, const QVariant &v, const QString &sFormat, int iIndexName=-1, qx::cvt::context::ctx_type ctx=qx::cvt::context::e_no_context)=0
void setSqlPlaceHolder(QSqlQuery &query, void *pOwner, const QString &sAppend=QString(), const QString &sOtherName=QString(), bool bCheckFKPartOfPK=false, qx::QxCollection< QString, QVariantList > *pLstExecBatch=NULL) const
int getNameCount() const
qx::IxSqlRelation : common interface for all relationships defined between 2 classes (or between 2 ta...
void lazyInsert_ManyToOne(QxSqlRelationParams &params) const
bool addLazyRelation(QxSqlRelationParams &params, IxSqlRelation *pRelation) const
void eagerJoin_ManyToOne(QxSqlRelationParams &params) const
void updateOffset_ManyToOne(bool bEager, QxSqlRelationParams &params) const
QVariant getIdFromQuery_ManyToOne(bool bEager, QxSqlRelationParams &params, int iOffset, int iNameIndex) const
void createTable_ManyToOne(QxSqlRelationParams &params) const
void eagerWhereSoftDelete_ManyToOne(QxSqlRelationParams &params) const
void eagerSelect_ManyToOne(QxSqlRelationParams &params) const
IxDataMember * getDataId() const
virtual void lazyFetch_ResolveOutput(QxSqlRelationParams &params) const =0
bool verifyOffset(QxSqlRelationParams &params, bool bId) const QX_USED
void lazyUpdate_ManyToOne(QxSqlRelationParams &params) const
void lazySelect_ManyToOne(QxSqlRelationParams &params) const
IxDataMember * nextData(long &lIndex) const
IxSqlRelation * nextRelation(long &lIndex) const
IxDataMember * getDataMember() const
void lazyInsert_Values_ManyToOne(QxSqlRelationParams &params) const
void setRelationType(relation_type e)
qx::QxSqlRelation_ManyToOne<DataType, Owner> : manage a relationship many-to-one defined between 2 cl...
virtual void lazyJoin(QxSqlRelationParams &params) const
virtual void lazyInsert(QxSqlRelationParams &params) const
QxSqlRelation< DataType, Owner >::type_owner type_owner
virtual void lazySelect(QxSqlRelationParams &params) const
virtual void updateOffset(bool bEager, QxSqlRelationParams &params) const
virtual void * eagerFetch_ResolveOutput(QxSqlRelationParams &params) const
virtual void lazyInsert_ResolveInput(QxSqlRelationParams &params) const
virtual void eagerWhere(QxSqlRelationParams &params) const
virtual void eagerWhereSoftDelete(QxSqlRelationParams &params) const
virtual QString getDescription() const
virtual void lazyFrom(QxSqlRelationParams &params) const
virtual QVariant getIdFromQuery(bool bEager, QxSqlRelationParams &params, int iOffset, int iNameIndex) const
virtual void lazyWhere(QxSqlRelationParams &params) const
virtual void eagerJoin(QxSqlRelationParams &params) const
virtual void eagerFrom(QxSqlRelationParams &params) const
virtual QString createExtraTable() const
virtual void lazyUpdate(QxSqlRelationParams &params) const
virtual void eagerSelect(QxSqlRelationParams &params) const
virtual bool getCartesianProduct() const
QxSqlRelation< DataType, Owner >::type_data type_data
virtual QSqlError onAfterSave(QxSqlRelationParams &params) const
virtual void lazyFetch_ResolveOutput(QxSqlRelationParams &params) const
virtual void lazyInsert_Values(QxSqlRelationParams &params) const
virtual void eagerFetch_ResolveInput(QxSqlRelationParams &params) const
virtual void lazyFetch_ResolveInput(QxSqlRelationParams &params) const
virtual void lazyUpdate_ResolveInput(QxSqlRelationParams &params) const
virtual void lazyWhereSoftDelete(QxSqlRelationParams &params) const
virtual QSqlError onBeforeSave(QxSqlRelationParams &params) const
virtual void createTable(QxSqlRelationParams &params) const
qx::QxSqlRelation<DataType, Owner> : base class for all relationships defined between 2 classes (or b...
bool callTriggerBeforeFetch(type_data &t, QxSqlRelationParams &params) const
bool isNullData(QxSqlRelationParams &params) const
QxSqlRelation< DataType, Owner >::type_tmp_3 type_data
type_data & getData(QxSqlRelationParams &params) const
bool callTriggerAfterFetch(type_data &t, QxSqlRelationParams &params) const
type_owner & getOwner(QxSqlRelationParams &params) const
qx::QxSqlRelationParams : define list of parameters to transfer to relationships to manage SQL querie...
void setCustomAliasOwner(const QString &s)
void setIndexOwner(long lIndex)
bool checkColumns(const QString &s) const
QString getCustomAliasOwner() const
qx::QxCollection< QString, QVariantList > * getLstExecBatch() const
type_lst_relation_linked * relationX() const
QSqlError save(T &t, QSqlDatabase *pDatabase=NULL)
Insert (if no exist) or update (if already exist) an element or a list of elements into database.
Definition QxDao.h:158
bool is_valid_primary_key(const T &t)
Root namespace for all QxOrm library features.