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QxSoftDelete.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_SOFT_DELETE_H_
    00033 #define _QX_SOFT_DELETE_H_
    00034
    00035 #ifdef _MSC_VER
    00036 #pragma once
    00037 #endif
    00038
    00046 #define QX_DAO_SOFT_DELETE_QDATETIME_FORMAT "yyyyMMddhhmmsszzz"
    00047
    00048 namespace qx {
    00049
    00096 class QxSoftDelete
    00097 {
    00098
    00099 public:
    00100
    00101    enum mode { mode_flag, mode_date_time };
    00102
    00103 private:
    00104
    00105    QString m_sTable;
    00106    QString m_sColumn;
    00107    QString m_sSqlQueryToFetch;
    00108    QString m_sSqlQueryToUpdate;
    00109    QString m_sSqlQueryToCreateTable;
    00110    mode m_eMode;
    00111
    00112 public:
    00113
    00114    QxSoftDelete() : m_eMode(mode_date_time) { ; }
    00115    QxSoftDelete(const QString & sColumn) : m_sColumn(sColumn), m_eMode(mode_date_time) { ; }
    00116    QxSoftDelete(const QString & sColumn, mode eMode) : m_sColumn(sColumn), m_eMode(eMode) { ; }
    00117    ~QxSoftDelete() { ; }
    00118
    00119    QString getTableName() const              { return m_sTable; }
    00120    QString getColumnName() const             { return m_sColumn; }
    00121    QString getSqlQueryToFetch() const        { return m_sSqlQueryToFetch; }
    00122    QString getSqlQueryToUpdate() const       { return m_sSqlQueryToUpdate; }
    00123    QString getSqlQueryToCreateTable() const  { return m_sSqlQueryToCreateTable; }
    00124    mode getMode() const                      { return m_eMode; }
    00125
    00126    void setTableName(const QString & sTable)          { m_sTable = sTable; }
    00127    void setColumnName(const QString & sColumn)        { m_sColumn = sColumn; }
    00128    void setSqlQueryToFetch(const QString & s)         { m_sSqlQueryToFetch = s; }
    00129    void setSqlQueryToUpdate(const QString & s)        { m_sSqlQueryToUpdate = s; }
    00130    void setSqlQueryToCreateTable(const QString & s)   { m_sSqlQueryToCreateTable = s; }
    00131    void setMode(mode eMode)                           { m_eMode = eMode; }
    00132
    00133    bool isEmpty() const { return (m_sTable.isEmpty() || m_sColumn.isEmpty()); }
    00134
    00135    QString buildSqlTablePointName(const QString & sTable = QString()) const
    00136    {
    00137       if (this->isEmpty()) { return ""; }
    00138       return ((sTable.isEmpty() ? m_sTable : sTable) + "." + m_sColumn);
    00139    }
    00140
    00141    QString buildSqlQueryToFetch(const QString & sTable = QString()) const
    00142    {
    00143       QString sCurrTable = (sTable.isEmpty() ? m_sTable : sTable);
    00144       if (this->isEmpty()) { return ""; }
    00145       else if (! m_sSqlQueryToFetch.isEmpty()) { return m_sSqlQueryToFetch; }
    00146       else if (m_eMode == mode_flag) { return ("(" + sCurrTable + "." + m_sColumn + " IS NULL" + " OR " + sCurrTable + "." + m_sColumn + " = ''" + " OR " + sCurrTable + "." + m_sColumn + " = '0'" + ")"); }
    00147       else if (m_eMode == mode_date_time) { return ("(" + sCurrTable + "." + m_sColumn + " IS NULL" + " OR " + sCurrTable + "." + m_sColumn + " = ''" + ")"); }
    00148       qAssert(false); return "";
    00149    }
    00150
    00151    QString buildSqlQueryToUpdate() const
    00152    {
    00153       if (this->isEmpty()) { return ""; }
    00154       else if (! m_sSqlQueryToUpdate.isEmpty()) { return m_sSqlQueryToUpdate; }
    00155       else if (m_eMode == mode_flag) { return (m_sColumn + " = '1'"); }
    00156       else if (m_eMode == mode_date_time) { return (m_sColumn + " = '" + QDateTime::currentDateTime().toString(QX_DAO_SOFT_DELETE_QDATETIME_FORMAT) + "'"); }
    00157       qAssert(false); return "";
    00158    }
    00159
    00160    QString buildSqlQueryToCreateTable() const
    00161    {
    00162       if (this->isEmpty()) { return ""; }
    00163       else if (! m_sSqlQueryToCreateTable.isEmpty()) { return m_sSqlQueryToCreateTable; }
    00164       else if (m_eMode == mode_flag) { return (m_sColumn + " " + "TEXT"); }
    00165       else if (m_eMode == mode_date_time) { return (m_sColumn + " " + "TEXT"); }
    00166       qAssert(false); return "";
    00167    }
    00168
    00169 };
    00170
    00171 } // namespace qx
    00172
    00173 #endif // _QX_SOFT_DELETE_H_