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/*
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* Copyright (C) 2015 Christian Ehringfeld <c.ehringfeld@t-online.de>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* 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 this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef QUERYBUILDER_H
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#define QUERYBUILDER_H
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#include <QString>
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#include <QHash>
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#include <QSharedPointer>
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#include <QPointer>
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#include <QSqlQuery>
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namespace CuteEntityManager {
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class Schema;
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class Entity;
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class Database;
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class QueryBuilder {
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public:
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QueryBuilder(QSharedPointer<Schema> schema, QSharedPointer<Database> database);
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virtual ~QueryBuilder();
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virtual bool createTable(const QSharedPointer<Entity> &entity) const;
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virtual bool createTable(const QString &tableName, const QHash<QString, QString> &tableDefinition) const;
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virtual QString createTableQuery(const QString &tableName, const QHash<QString, QString> &tableDefinition) const;
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virtual QString renameTable(QString tableName, QString newName) const;
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virtual QString dropTable(QString tableName) const;
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virtual QString truncateTable(QString tableName) const;
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virtual QString addColumn(QString tableName, QString columnName, QString columnType) const;
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virtual QString dropColumn(QString tableName, QString columName)const;
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virtual QString renameColumn(QString tableName, QString oldName, QString newName) const;
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virtual QString alterColumn(QString tableName, QString columnName, QString newType)const;
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virtual QString addPrimaryKey(QString name, QString tableName, QStringList columns)const;
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virtual QString dropPrimaryKey(QString name, QString tableName) const;
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virtual QString addForeignKey(QString name, QString tableName, QStringList columns, QString refTableName,
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QStringList refColumns, QString deleteConstraint, QString updateConstraint) const;
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virtual QString dropForeignKey(QString name, QString tableName) const;
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virtual QString createIndex(QString name, QString tableName, QStringList columns, bool unique)const;
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virtual QString dropIndex(QString name, QString tableName)const;
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QHash<QString, QVariant> getEntityAttributes(const QHash<QString, QMetaProperty> &props,
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const QSharedPointer<Entity> &entity) const;
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QSharedPointer<Schema> getSchema() const;
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void setSchema(const QSharedPointer<Schema> &value);
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QSharedPointer<Database> getDatabase() const;
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void setDatabase(const QSharedPointer<Database> &value);
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QHash<QString, QHash<QString, QString>> generateRelationTables(const QSharedPointer<Entity> &entity) const;
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QHash<QString, QString> generateTableDefinition(const QSharedPointer<Entity> &entity) const;
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QString generateManyToManyTableName(const QSharedPointer<Entity> &firstEntity,
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const QSharedPointer<Entity> &secondEntity) const;
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QString transformTypeToAbstractDbType(QString typeName) const;
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QString transformAbstractTypeToRealDbType(QString typeName) const;
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QString getColumnType(const QString &type) const;
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QSqlQuery find(const qint64 &id, const QString &tableName) const;
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QSqlQuery findByAttributes(const QHash<QString, QVariant> &m, const QString &tableName,
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const bool &ignoreID = true) const;
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QSqlQuery findByAttributes(const QSharedPointer<Entity> &e, bool ignoreID = true);
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QSqlQuery findAll(const QString &tableName) const;
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QSqlQuery remove(const QSharedPointer<Entity> &entity) const;
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QSqlQuery findId(const QSharedPointer<Entity> &entity) const;
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QSqlQuery count(const QSharedPointer<Entity> &entity, bool ignoreID) const;
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QSqlQuery count(const QString &tableName) const;
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QSqlQuery merge(const QSharedPointer<Entity> &entity) const;
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QSqlQuery create(const QSharedPointer<Entity> &entity) const;
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QSqlQuery oneToMany(const QString &tableName, const QString &attribute, const qint64 &id);
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QSqlQuery manyToMany(const QString &tableName, const QString &attribute, const qint64 &id, const QString &foreignKey,
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const QString &foreignTable);
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virtual QString limit(const qint8 limit, const qint64 offset) const;
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QString generateManyToManyColumnName(const QSharedPointer<Entity> &entity) const;
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QSqlQuery getQuery() const;
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protected:
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void insertRelationId(const Entity *e, QHash<QString, QVariant> &map, QString relName) const;
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QString buildColumns(const QStringList &columns) const;
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QHash<QString, QVariant> getManyToOneAttributes(const QHash<QString, QMetaProperty> &props,
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const QSharedPointer<Entity> &entity) const;
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QHash<QString, QMetaProperty> getMetaProperties(const QSharedPointer<Entity> &entity) const;
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QHash<QString, QVariant> getPropertyValues(const QHash<QString, QMetaProperty> &metaProps,
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const QSharedPointer<Entity> &entity) const;
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QString buildCreateQuery(QHash<QString, QVariant>::const_iterator i, QHash<QString, QVariant>::const_iterator end,
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QString &p1, QString &p2) const;
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void bindValues(const QHash<QString, QVariant> &h, QSqlQuery &q, bool ignoreID = false) const;
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QString where(const QSharedPointer<Entity> &entity, QString conjunction = ",", bool ignoreID = false) const;
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QString where(const QHash<QString, QVariant> &m, const QString &conjunction = ",", bool ignoreID = false) const;
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QString attributes(const QHash<QString, QVariant> &m, const QString &conjunction = ",", bool ignoreID = false) const;
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QHash<QString, QVariant> saveAttributes(const QSharedPointer<Entity> &entity) const;
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QString leftJoin(const QString &joinableTable, const QString &tableName, const QString &foreignKey);
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QSharedPointer<Schema> schema;
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QSharedPointer<Database> database;
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};
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}
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#endif // QUERYBUILDER_H
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