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QxDaoAsync.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_DAO_ASYNC_H_
    00027 #define _QX_DAO_ASYNC_H_
    00028
    00029 #ifdef _MSC_VER
    00030 #pragma once
    00031 #endif
    00032
    00040 #include <QtCore/qqueue.h>
    00041
    00042 #include <QtSql/qsqlerror.h>
    00043
    00044 #include <QxDao/IxPersistable.h>
    00045 #include <QxDao/QxSqlQuery.h>
    00046
    00047 namespace qx {
    00048 namespace dao {
    00049 namespace detail {
    00050
    00055 struct QxDaoAsyncParams
    00056 {
    00057
    00058    enum dao_action { dao_none, dao_count, dao_fetch_by_id, dao_fetch_all, dao_fetch_by_query, dao_insert,
    00059                      dao_update, dao_save, dao_delete_by_id, dao_delete_all, dao_delete_by_query,
    00060                      dao_destroy_by_id, dao_destroy_all, dao_destroy_by_query, dao_execute_query, dao_call_query };
    00061
    00062    dao_action           daoAction;
    00063    QString              className;
    00064    qx::QxSqlQuery       query;
    00065    QSqlDatabase *       pDatabase;
    00066    IxPersistable_ptr    pInstance;
    00067    IxCollection_ptr     pListOfInstances;
    00068    QStringList          listColumns;
    00069    QStringList          listRelations;
    00070    QVariant             id;
    00071    long                 daoCount;
    00072
    00073    QxDaoAsyncParams() : daoAction(dao_none), pDatabase(NULL), daoCount(0) { ; }
    00074    ~QxDaoAsyncParams() { ; }
    00075
    00076 };
    00077
    00078 typedef boost::shared_ptr<QxDaoAsyncParams> QxDaoAsyncParams_ptr;
    00079
    00084 class QX_DLL_EXPORT QxDaoAsyncRunner : public QObject
    00085 { Q_OBJECT
    00086
    00087 public:
    00088
    00089    QxDaoAsyncRunner();
    00090    virtual ~QxDaoAsyncRunner();
    00091
    00092 protected:
    00093
    00094    QSqlError runQuery(qx::dao::detail::QxDaoAsyncParams_ptr pDaoParams);
    00095
    00096 Q_SIGNALS:
    00097
    00098    void queryFinished(const QSqlError & daoError, qx::dao::detail::QxDaoAsyncParams_ptr pDaoParams);
    00099
    00100 public Q_SLOTS:
    00101
    00102    void onQueryStarted(qx::dao::detail::QxDaoAsyncParams_ptr pDaoParams);
    00103
    00104 };
    00105
    00106 } // namespace detail
    00107 } // namespace dao
    00108
    00152 class QX_DLL_EXPORT QxDaoAsync : public QThread
    00153 { Q_OBJECT
    00154
    00155 protected:
    00156
    00157    QMutex m_mutex;
    00158    qx::dao::detail::QxDaoAsyncParams_ptr m_pDaoParams;
    00159
    00160 public:
    00161
    00162    QxDaoAsync();
    00163    virtual ~QxDaoAsync();
    00164
    00165    bool asyncCount(const QString & className, const qx::QxSqlQuery & query = qx::QxSqlQuery(), QSqlDatabase * pDatabase = NULL);
    00166    bool asyncFetchById(IxPersistable_ptr pToFetch, const QVariant & id = QVariant(), const QStringList & columns = QStringList(), const QStringList & relation = QStringList(), QSqlDatabase * pDatabase = NULL);
    00167    bool asyncFetchAll(const QString & className, const QStringList & columns = QStringList(), const QStringList & relation = QStringList(), QSqlDatabase * pDatabase = NULL);
    00168    bool asyncFetchByQuery(const QString & className, const qx::QxSqlQuery & query, const QStringList & columns = QStringList(), const QStringList & relation = QStringList(), QSqlDatabase * pDatabase = NULL);
    00169    bool asyncInsert(IxPersistable_ptr pToInsert, const QStringList & relation = QStringList(), QSqlDatabase * pDatabase = NULL);
    00170    bool asyncUpdate(IxPersistable_ptr pToUpdate, const qx::QxSqlQuery & query = qx::QxSqlQuery(), const QStringList & columns = QStringList(), const QStringList & relation = QStringList(), QSqlDatabase * pDatabase = NULL);
    00171    bool asyncSave(IxPersistable_ptr pToSave, const QStringList & relation = QStringList(), QSqlDatabase * pDatabase = NULL);
    00172    bool asyncDeleteById(IxPersistable_ptr pToDelete, const QVariant & id = QVariant(), QSqlDatabase * pDatabase = NULL);
    00173    bool asyncDeleteAll(const QString & className, QSqlDatabase * pDatabase = NULL);
    00174    bool asyncDeleteByQuery(const QString & className, const qx::QxSqlQuery & query, QSqlDatabase * pDatabase = NULL);
    00175    bool asyncDestroyById(IxPersistable_ptr pToDestroy, const QVariant & id = QVariant(), QSqlDatabase * pDatabase = NULL);
    00176    bool asyncDestroyAll(const QString & className, QSqlDatabase * pDatabase = NULL);
    00177    bool asyncDestroyByQuery(const QString & className, const qx::QxSqlQuery & query, QSqlDatabase * pDatabase = NULL);
    00178    bool asyncExecuteQuery(const QString & className, qx::QxSqlQuery & query, QSqlDatabase * pDatabase = NULL);
    00179    bool asyncCallQuery(qx::QxSqlQuery & query, QSqlDatabase * pDatabase = NULL);
    00180
    00181    bool isQueryRunning() const { return (m_pDaoParams.get() != NULL); }
    00182
    00183 protected:
    00184
    00185    virtual void run();
    00186
    00187    void startQuery();
    00188
    00189 Q_SIGNALS:
    00190
    00191    void queryStarted(qx::dao::detail::QxDaoAsyncParams_ptr pDaoParams);
    00192    void queryFinished(const QSqlError & daoError, qx::dao::detail::QxDaoAsyncParams_ptr pDaoParams);
    00193
    00194 private Q_SLOTS:
    00195
    00196    void onQueryFinished(const QSqlError & daoError, qx::dao::detail::QxDaoAsyncParams_ptr pDaoParams);
    00197
    00198 };
    00199
    00200 typedef boost::shared_ptr<QxDaoAsync> QxDaoAsync_ptr;
    00201
    00202 } // namespace qx
    00203
    00204 #endif // _QX_DAO_ASYNC_H_