139 lines
5.3 KiB
C++
139 lines
5.3 KiB
C++
/**************************************************************************
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**
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** This file is part of Nut project.
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** https://github.com/HamedMasafi/Nut
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**
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** Nut is free software: you can redistribute it and/or modify
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** it under the terms of the GNU Lesser General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** Nut is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU Lesser General Public License for more details.
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**
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** You should have received a copy of the GNU Lesser General Public License
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** along with Nut. If not, see <http://www.gnu.org/licenses/>.
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**
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**************************************************************************/
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#ifndef SQLGENERATORBASE_H
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#define SQLGENERATORBASE_H
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#include <QtCore/qglobal.h>
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#include <QtCore/QObject>
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#include <QtCore/QStringList>
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#include "../phrase.h"
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//#include "../wherephrase.h"
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NUT_BEGIN_NAMESPACE
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class Table;
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struct FieldModel;
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class DatabaseModel;
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class TableModel;
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class Database;
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class RelationModel;
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class SqlGeneratorBase : public QObject
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{
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// Q_OBJECT
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Database *_database;
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public:
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enum CommandType{
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Select,
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Insert,
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Update,
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Delete
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};
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enum AgregateType{
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// SelectAll,
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Count,
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Min,
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Max,
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Average,
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SignleField
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};
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SqlGeneratorBase(Database *parent);
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virtual ~SqlGeneratorBase();
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virtual QString masterDatabaseName(QString databaseName);
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virtual QString createTable(TableModel *table);
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virtual QString fieldType(FieldModel *field) = 0;
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virtual QString fieldDeclare(FieldModel *field);
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virtual QStringList diff(DatabaseModel lastModel, DatabaseModel newModel);
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virtual QString diff(FieldModel *oldField, FieldModel *newField);
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virtual QString diff(TableModel *oldTable, TableModel *newTable);
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virtual QString join(const QString &mainTable,
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const QList<RelationModel*> list,
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QStringList *order = Q_NULLPTR);
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virtual QString join(const QStringList &list, QStringList *order = Q_NULLPTR);
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virtual QString saveRecord(Table *t, QString tableName);
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virtual QString recordsPhrase(TableModel *table);
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virtual QString insertRecord(Table *t, QString tableName);
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virtual QString updateRecord(Table *t, QString tableName);
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virtual QString deleteRecord(Table *t, QString tableName);
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virtual QString deleteRecords(QString tableName, QString where);
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virtual QString selectCommand(const QString &tableName,
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const PhraseList &fields,
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const ConditionalPhrase &where,
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const PhraseList &order,
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const QList<RelationModel*> joins,
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const int skip = -1,
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const int take = -1);
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virtual QString selectCommand(const QString &tableName,
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const AgregateType &t, const QString &agregateArg,
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const ConditionalPhrase &where,
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const QList<RelationModel *> &joins,
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const int skip = -1,
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const int take = -1);
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virtual QString deleteCommand(const QString &tableName,
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const ConditionalPhrase &where);
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virtual QString updateCommand(const QString &tableName,
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const AssignmentPhraseList &assigments,
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const ConditionalPhrase &where);
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// virtual QString selectCommand(AgregateType t,
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// QString agregateArg, QString tableName,
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// QList<WherePhrase> &wheres,
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// QList<WherePhrase> &orders,
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// QList<RelationModel*> joins,
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// int skip = -1, int take = -1);
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// virtual QString deleteCommand(QList<WherePhrase> &wheres, QString tableName);
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// virtual QString updateCommand(WherePhrase &phrase, QList<WherePhrase> &wheres, QString tableName);
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virtual QString escapeValue(const QVariant &v) const;
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virtual QVariant readValue(const QVariant::Type &type, const QVariant &dbValue);
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virtual QString phrase(const PhraseData *d) const;
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virtual QString operatorString(const PhraseData::Condition &cond) const;
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virtual void appendSkipTake(QString &sql, int skip = -1, int take = -1);
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private:
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QString createConditionalPhrase(const PhraseData *d) const;
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QString createFieldPhrase(const PhraseList &ph);
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QString createOrderPhrase(const PhraseList &ph);
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void createInsertPhrase(const AssignmentPhraseList &ph, QString &fields, QString &values);
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QString agregateText(const AgregateType &t, const QString &arg = QString::null) const;
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QString fromTableText(const QString &tableName, QString &joinClassName, QString &orderBy) const;
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// QString createWhere(QList<WherePhrase> &wheres);
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void replaceTableNames(QString &command);
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void removeTableNames(QString &command);
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};
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NUT_END_NAMESPACE
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#endif // SQLGENERATORBASE_H
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