QxOrm 1.1.6
C++ Object Relational Mapping library
QxSqlQueryBuilder.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 _QX_SQL_QUERY_BUILDER_H_
00027 #define _QX_SQL_QUERY_BUILDER_H_
00028 
00029 #ifdef _MSC_VER
00030 #pragma once
00031 #endif
00032 
00040 #include <QtCore/qmutex.h>
00041 
00042 #include <QxDao/IxSqlQueryBuilder.h>
00043 #include <QxDao/QxSqlQueryHelper.h>
00044 
00045 #include <QxRegister/QxClass.h>
00046 
00047 #include <QxTraits/remove_attr.h>
00048 #include <QxTraits/remove_smart_ptr.h>
00049 
00050 #define QX_SQL_ERR_NO_DATA_MEMBER_REGISTERED    "'QxSqlQueryBuilder<T>' error : 'qx::register_class()' not called or no data member registered"
00051 #define QX_SQL_ERR_NO_ID_REGISTERED             "'QxSqlQueryBuilder<T>' error : no id registered"
00052 
00053 #define QX_SQL_BUILDER_INIT_FCT() \
00054 static QString sql = ""; \
00055 QMutexLocker locker(& QxSqlQueryBuilder<T>::m_oMutex); \
00056 if (! sql.isEmpty()) { setSqlQuery(sql); return (* this); }
00057 
00058 #define QX_SQL_BUILDER_INIT_FCT_WITH_RELATION() \
00059 static QHash<QString, QString> sqlX; \
00060 QMutexLocker locker(& QxSqlQueryBuilder<T>::m_oMutex); \
00061 QString sql = sqlX.value(m_sHashRelation); \
00062 if (! sql.isEmpty()) { setSqlQuery(sql); return (* this); }
00063 
00064 namespace qx {
00065 
00070 template <class T>
00071 class QxSqlQueryBuilder : public IxSqlQueryBuilder
00072 {
00073 
00074 private:
00075 
00076    typedef typename qx::trait::remove_attr<T>::type type_sql_tmp_1;
00077    typedef typename qx::trait::remove_smart_ptr<type_sql_tmp_1>::type type_sql_tmp_2;
00078 
00079 public:
00080 
00081    typedef typename qx::QxSqlQueryBuilder<T>::type_sql_tmp_2 type_sql;
00082 
00083 protected:
00084 
00085    QxDataMemberX<type_sql> * m_pDataMemberX;                         
00086 
00087    static QxCollection<QString, IxDataMember *> m_lstDataMember;     
00088    static IxSqlRelationX m_lstSqlRelation;                           
00089    static QMutex m_oMutex;                                           
00090 
00091 public:
00092 
00093    QxSqlQueryBuilder() : IxSqlQueryBuilder(), m_pDataMemberX(NULL) { ; }
00094    QxSqlQueryBuilder(const QString & sql) : IxSqlQueryBuilder(sql), m_pDataMemberX(NULL) { ; }
00095    virtual ~QxSqlQueryBuilder() { ; }
00096 
00097    virtual IxDataMemberX * getDataMemberX() const { return m_pDataMemberX; }
00098 
00099    virtual IxSqlQueryBuilder & count()
00100    {
00101       QX_SQL_BUILDER_INIT_FCT()
00102       sql = "SELECT COUNT(*) FROM " + m_sTableName;
00103       setSqlQuery(sql);
00104       return (* this);
00105    }
00106 
00107    virtual IxSqlQueryBuilder & exist()
00108    {
00109       QX_SQL_BUILDER_INIT_FCT()
00110       if (! getDataId()) { qDebug("[QxOrm] %s", QX_SQL_ERR_NO_ID_REGISTERED); qAssert(false); return (* this); }
00111       qx::dao::detail::QxSqlQueryHelper_Exist<type_sql>::sql(sql, (* this));
00112       setSqlQuery(sql);
00113       return (* this);
00114    }
00115 
00116    virtual IxSqlQueryBuilder & fetchAll()
00117    {
00118       QX_SQL_BUILDER_INIT_FCT()
00119       qx::dao::detail::QxSqlQueryHelper_FetchAll<type_sql>::sql(sql, (* this));
00120       setSqlQuery(sql);
00121       return (* this);
00122    }
00123 
00124    virtual IxSqlQueryBuilder & fetchById()
00125    {
00126       QX_SQL_BUILDER_INIT_FCT()
00127       if (! getDataId()) { qDebug("[QxOrm] %s", QX_SQL_ERR_NO_ID_REGISTERED); qAssert(false); return (* this); }
00128       qx::dao::detail::QxSqlQueryHelper_FetchById<type_sql>::sql(sql, (* this));
00129       setSqlQuery(sql);
00130       return (* this);
00131    }
00132 
00133    virtual IxSqlQueryBuilder & insert()
00134    {
00135       QX_SQL_BUILDER_INIT_FCT()
00136       qx::dao::detail::QxSqlQueryHelper_Insert<type_sql>::sql(sql, (* this));
00137       setSqlQuery(sql);
00138       return (* this);
00139    }
00140 
00141    virtual IxSqlQueryBuilder & update()
00142    {
00143       QX_SQL_BUILDER_INIT_FCT()
00144       if (! getDataId()) { qDebug("[QxOrm] %s", QX_SQL_ERR_NO_ID_REGISTERED); qAssert(false); return (* this); }
00145       qx::dao::detail::QxSqlQueryHelper_Update<type_sql>::sql(sql, (* this));
00146       setSqlQuery(sql);
00147       return (* this);
00148    }
00149 
00150    virtual IxSqlQueryBuilder & deleteAll()
00151    {
00152       QX_SQL_BUILDER_INIT_FCT()
00153       sql = "DELETE FROM " + m_sTableName;
00154       setSqlQuery(sql);
00155       return (* this);
00156    }
00157 
00158    virtual IxSqlQueryBuilder & deleteById()
00159    {
00160       QX_SQL_BUILDER_INIT_FCT()
00161       if (! getDataId()) { qDebug("[QxOrm] %s", QX_SQL_ERR_NO_ID_REGISTERED); qAssert(false); return (* this); }
00162       qx::dao::detail::QxSqlQueryHelper_DeleteById<type_sql>::sql(sql, (* this));
00163       setSqlQuery(sql);
00164       return (* this);
00165    }
00166 
00167    virtual IxSqlQueryBuilder & createTable()
00168    {
00169       QX_SQL_BUILDER_INIT_FCT()
00170       qx::dao::detail::QxSqlQueryHelper_CreateTable<type_sql>::sql(sql, (* this));
00171       setSqlQuery(sql);
00172       return (* this);
00173    }
00174 
00175    virtual IxSqlQueryBuilder & fetchAll_WithRelation(IxSqlRelationX * pRelationX)
00176    {
00177       QX_SQL_BUILDER_INIT_FCT_WITH_RELATION()
00178       qx::dao::detail::QxSqlQueryHelper_FetchAll_WithRelation<type_sql>::sql(pRelationX, sql, (* this));
00179       if (! m_sHashRelation.isEmpty()) { sqlX.insert(m_sHashRelation, sql); }
00180       setSqlQuery(sql);
00181       return (* this);
00182    }
00183 
00184    virtual IxSqlQueryBuilder & fetchById_WithRelation(IxSqlRelationX * pRelationX)
00185    {
00186       QX_SQL_BUILDER_INIT_FCT_WITH_RELATION()
00187       if (! getDataId()) { qDebug("[QxOrm] %s", QX_SQL_ERR_NO_ID_REGISTERED); qAssert(false); return (* this); }
00188       qx::dao::detail::QxSqlQueryHelper_FetchById_WithRelation<type_sql>::sql(pRelationX, sql, (* this));
00189       if (! m_sHashRelation.isEmpty()) { sqlX.insert(m_sHashRelation, sql); }
00190       setSqlQuery(sql);
00191       return (* this);
00192    }
00193 
00194    virtual IxSqlQueryBuilder & fetchAll(const QStringList & columns)
00195    {
00196       QString sql;
00197       if (columns.count() <= 0) { return fetchAll(); }
00198       if (columns.at(0) == "*") { return fetchAll(); }
00199       if (! verifyColumns(columns)) { qAssert(false); return (* this); }
00200       qx::dao::detail::QxSqlQueryHelper_FetchAll<type_sql>::sql(sql, (* this), columns);
00201       setSqlQuery(sql);
00202       return (* this);
00203    }
00204 
00205    virtual IxSqlQueryBuilder & fetchById(const QStringList & columns)
00206    {
00207       QString sql;
00208       if (columns.count() <= 0) { return fetchById(); }
00209       if (columns.at(0) == "*") { return fetchById(); }
00210       if (! verifyColumns(columns)) { qAssert(false); return (* this); }
00211       if (! getDataId()) { qDebug("[QxOrm] %s", QX_SQL_ERR_NO_ID_REGISTERED); qAssert(false); return (* this); }
00212       qx::dao::detail::QxSqlQueryHelper_FetchById<type_sql>::sql(sql, (* this), columns);
00213       setSqlQuery(sql);
00214       return (* this);
00215    }
00216 
00217    virtual IxSqlQueryBuilder & update(const QStringList & columns)
00218    {
00219       QString sql;
00220       if (columns.count() <= 0) { return update(); }
00221       if (columns.at(0) == "*") { return update(); }
00222       if (! verifyColumns(columns)) { qAssert(false); return (* this); }
00223       if (! getDataId()) { qDebug("[QxOrm] %s", QX_SQL_ERR_NO_ID_REGISTERED); qAssert(false); return (* this); }
00224       qx::dao::detail::QxSqlQueryHelper_Update<type_sql>::sql(sql, (* this), columns);
00225       setSqlQuery(sql);
00226       return (* this);
00227    }
00228 
00229    virtual void init()
00230    {
00231       QMutexLocker locker(& QxSqlQueryBuilder<T>::m_oMutex);
00232       m_pDataMemberX = QxClass<type_sql>::getSingleton()->dataMemberX();
00233       m_pDataMemberId = m_pDataMemberX->getId_WithDaoStrategy();
00234       m_sTableName = m_pDataMemberX->getName();
00235       m_lstDataMemberPtr = (& QxSqlQueryBuilder<T>::m_lstDataMember);
00236       m_lstSqlRelationPtr = (& QxSqlQueryBuilder<T>::m_lstSqlRelation);
00237       if (getDataCount() > 0 || getRelationCount() > 0) { return; }
00238       IxDataMember * p = NULL; long lCount = m_pDataMemberX->count_WithDaoStrategy();
00239       for (long l = 0; l < lCount; ++l) { if ((p = isValid_DataMember(l))) { m_lstDataMember.insert(p->getKey(), p); } }
00240       for (long l = 0; l < lCount; ++l) { if ((p = isValid_SqlRelation(l))) { m_lstSqlRelation.insert(p->getKey(), p->getSqlRelation()); } }
00241    }
00242 
00243 private:
00244 
00245    IxDataMember * isValid_DataMember(long lIndex) const
00246    {
00247       IxDataMember * p = m_pDataMemberX->get_WithDaoStrategy(lIndex);
00248       bool bValid = (p && p->getDao() && ! p->hasSqlRelation());
00249       bValid = (bValid && (p != m_pDataMemberId));
00250       return (bValid ? p : NULL);
00251    }
00252 
00253    IxDataMember * isValid_SqlRelation(long lIndex) const
00254    {
00255       IxDataMember * p = m_pDataMemberX->get_WithDaoStrategy(lIndex);
00256       bool bIsValid = (p && p->getDao() && p->hasSqlRelation());
00257       if (bIsValid) { p->getSqlRelation()->init(); }
00258       return (bIsValid ? p : NULL);
00259    }
00260 
00261 private:
00262 
00263 #ifndef NDEBUG
00264    inline bool verifyColumns(const QStringList & columns) const
00265    {
00266       if (! m_pDataMemberX) { return false; }
00267       for (int i = 0; i < columns.count(); i++)
00268       { if (! m_pDataMemberX->exist_WithDaoStrategy(columns.at(i))) { return false; } }
00269       return true;
00270    }
00271 #else
00272    inline bool verifyColumns(const QStringList & columns) const
00273    { Q_UNUSED(columns); return true; }
00274 #endif // NDEBUG
00275 
00276 };
00277 
00278 template <class T> QMutex QxSqlQueryBuilder<T>::m_oMutex(QMutex::Recursive);
00279 template <class T> QxCollection<QString, IxDataMember *> QxSqlQueryBuilder<T>::m_lstDataMember;
00280 template <class T> IxSqlRelationX QxSqlQueryBuilder<T>::m_lstSqlRelation;
00281 
00282 } // namespace qx
00283 
00284 #endif // _QX_SQL_QUERY_BUILDER_H_
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