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root/src/entitymanager.h @ 9e2d71d6
| 81c23b56 | Christian Ehringfeld | /*
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| 6899f814 | Christian Ehringfeld | * 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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| 81c23b56 | Christian Ehringfeld | ||
#ifndef ENTITYMANAGER_H
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#define ENTITYMANAGER_H
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#include <QtSql/QSqlDatabase>
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#include <QtSql/QSqlRecord>
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#include <QtSql/QSqlField>
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#include <QString>
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#include <QStringList>
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| ac8aede7 | Christian Ehringfeld | #include <QObject>
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| 586bb527 | Christian Ehringfeld | #include <QSharedPointer>
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| 81c23b56 | Christian Ehringfeld | #include <QDebug>
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#include <QtSql/QSqlError>
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| a205e8a9 | Christian Ehringfeld | #include <QMetaType>
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| 82442988 | Christian Ehringfeld | #include "schema.h"
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| 81c23b56 | Christian Ehringfeld | #include "entity.h"
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#include "database.h"
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| a205e8a9 | Christian Ehringfeld | #include "entityinstancefactory.h"
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| 506067a2 | Christian Ehringfeld | #include "queryinterpreter.h"
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| 82442988 | Christian Ehringfeld | #include "cache.h"
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#include "querybuilder.h"
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| fc14f551 | Christian Ehringfeld | #include "validators/errormsg.h"
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| 6899f814 | Christian Ehringfeld | namespace CuteEntityManager {
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| f12670e9 | Christian Ehringfeld | #ifdef QT_DEBUG
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#define DEFAULTMSGTYPE MsgType::DEBUG
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#define INSPECTENTITIES true
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#else
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#define DEFAULTMSGTYPE MsgType::CRITICAL
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#define INSPECTENTITIES false
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#endif
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| 81c23b56 | Christian Ehringfeld | ||
| 45135a14 | Christian Ehringfeld | class Logger;
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| 2ee5022f | Christian Ehringfeld | class QueryInterpreter;
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| ac8aede7 | Christian Ehringfeld | class EntityManager : public QObject {
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Q_OBJECT
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| df1e56bd | Christian Ehringfeld | public slots:
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| 1708f3a8 | Christian Ehringfeld | /**
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* @brief startup
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* @param version must be unique
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* @param toInitialize list of entity classnames which database tables should be created
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* @return
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*/
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| 5baea70c | Christian Ehringfeld | bool startup(QString version, QStringList toInitialize,
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bool createIndices = false);
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| e0e1ead8 | Christian Ehringfeld | bool executeQuery(const QString &query);
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| 2d9fab10 | Christian Ehringfeld | QSharedPointer<Entity> findById(const qint64 &id, const QString &classname);
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| e0e1ead8 | Christian Ehringfeld | QList<QSharedPointer<Entity>> findEntityByAttributes(const
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QSharedPointer<Entity> &entity,
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bool ignoreID = false);
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| 0d155b40 | Christian Ehringfeld | qint64 findId(QSharedPointer<Entity> &entity);
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| d2bebf1b | Christian Ehringfeld | /**
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* @todo should be an insert statement with many values
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* @brief EntityManager::create
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* @param entities
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* @return
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*/
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| 139a9b5e | Christian Ehringfeld | bool create(QList<QSharedPointer<Entity>> &entities,
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| e332a521 | Christian Ehringfeld | const bool persistRelations = true, const bool validate = true,
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| 87739ae0 | Christian Ehringfeld | const bool relationsIgnoreHasChanged = false,
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const bool checkDuplicate = false);
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| 3938a37e | Christian Ehringfeld | /**
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* @brief EntityManager::create
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* Will persist an entity in the database. Before its persisted it has the id -1(invalid id). If database persisting was succesfull it has a valid id.
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* @param entity
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* @param persistRelations
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* @param checkDuplicate
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* @param validate
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* @return
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*/
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| 696666eb | Christian Ehringfeld | bool create(QSharedPointer<Entity> &entity, const bool persistRelations = true,
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| e332a521 | Christian Ehringfeld | const bool checkDuplicate = false, const bool validate = true,
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const bool relationsIgnoreHasChanged = false) ;
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| 3938a37e | Christian Ehringfeld | /**
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* @brief EntityManager::save
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* If the entity has no valid ID, this method will call the create() method. Else it would call the merge method.
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* @param entity
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* @param persistRelations
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* @param ignoreHasChanged
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* @param validate
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* @return bool
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*/
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| 28d2f01a | Christian Ehringfeld | bool save(QSharedPointer<Entity> &entity, const bool persistRelations = true,
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| e332a521 | Christian Ehringfeld | const bool ignoreHasChanged = false, const bool validate = true,
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const bool relationsIgnoreHasChanged = false);
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| 87739ae0 | Christian Ehringfeld | bool save(QList<QSharedPointer<Entity>> &entities,
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const bool persistRelations = true,
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const bool ignoreHasChanged = false, const bool validate = true,
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const bool relationsIgnoreHasChanged = false);
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| fc14f551 | Christian Ehringfeld | bool merge(QSharedPointer<Entity> &entity, bool withRelations = true,
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| d2bebf1b | Christian Ehringfeld | const bool validate = true, const bool relationsIgnoreHasChanged = false);
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| 9070a496 | Christian Ehringfeld | bool remove(QSharedPointer<Entity> &entity);
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bool removeAll(QString tblname);
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| df1e56bd | Christian Ehringfeld | bool createTable(const QSharedPointer<Entity> &entity,
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bool createRelationTables = true);
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| 0ec1cbfb | Christian Ehringfeld | bool createTable(QString className, bool createRelationTables = true);
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| 87739ae0 | Christian Ehringfeld | quint8 count(const QSharedPointer<Entity> &entity, bool ignoreID = true,
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bool followInheritance = false);
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| 506067a2 | Christian Ehringfeld | quint8 count(const QString &tableName);
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| 9070a496 | Christian Ehringfeld | QSharedPointer<Database> getDb() const;
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void setDb(const QSharedPointer<Database> &value);
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QSharedPointer<Schema> getSchema() const;
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| 6d46f506 | Christian Ehringfeld | /**
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* @brief EntityManager::refresh
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* fetches an entity again from the database
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* @param entity
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*/
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| 4f3b13f3 | Christian Ehringfeld | void refresh(QSharedPointer<Entity> &entity);
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| 9070a496 | Christian Ehringfeld | void setSchema(const QSharedPointer<Schema> &value);
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| 506067a2 | Christian Ehringfeld | QList<QHash<QString, QVariant> > selectByQuery(Query &query);
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QList<QHash<QString, QVariant> > selectBySql(const QString &sql);
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qint8 count(Query &query);
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| d2bebf1b | Christian Ehringfeld | /**
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* @brief EntityManager::validate
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* This validates an entity. Its uses the validationRules() method of the specified entity.
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* If there are validation errors, this method will set these errors in the entity object.
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* You can check them with entity->hasErrors(), entity->getErrors() or entity->getErrorsAsString()
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* @param entity
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* @return true if it has no validation errors, false if it has errors
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*/
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| fc14f551 | Christian Ehringfeld | bool validate(QSharedPointer<Entity> &entity);
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| d2bebf1b | Christian Ehringfeld | /**
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* @brief hasChanged
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* @param entity
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* @todo check manyToMany relations
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* @return
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*/
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| 554f7bc0 | Christian Ehringfeld | bool hasChanged(QSharedPointer<Entity> &entity);
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| dc618bda | Christian Ehringfeld | public:
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| f12670e9 | Christian Ehringfeld | EntityManager(QSqlDatabase database, bool logQueries = false,
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const bool inspectEntities = INSPECTENTITIES,
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MsgType logActions = DEFAULTMSGTYPE);
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| dc618bda | Christian Ehringfeld | EntityManager(const QString &databaseType, QString databasename = "" ,
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QString hostname = "",
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QString username = "",
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| 5baea70c | Christian Ehringfeld | QString password = "", QString port = "", bool logQueries = false,
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| f12670e9 | Christian Ehringfeld | QString databaseOptions = "", const bool inspectEntities = INSPECTENTITIES,
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MsgType logActions = DEFAULTMSGTYPE);
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| 28d2f01a | Christian Ehringfeld | virtual ~EntityManager();
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| dc618bda | Christian Ehringfeld | static QStringList getConnectionNames();
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| 28d2f01a | Christian Ehringfeld | static void removeConnectionName(const QString &name);
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static QHash<QString, EntityManager *> getInstances();
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static EntityManager *getDefaultInstance();
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static EntityManager *getInstance(QString name);
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| dc618bda | Christian Ehringfeld | QSharedPointer<QueryBuilder> getQueryBuilder() const;
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| 1b167b6c | Christian Ehringfeld | ||
| c9f21778 | Christian Ehringfeld | template<class T> QList<QSharedPointer<T>> find(Query &q,
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const bool joinBaseClasses = false, const bool resolveRelations = true) {
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| 1b167b6c | Christian Ehringfeld | QSharedPointer<Entity> ptr = QSharedPointer<Entity>
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(EntityInstanceFactory::createInstance<T *>());
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if (ptr) {
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if (q.getFrom().isEmpty()) {
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q.setFrom(QStringList(ptr->getTablename()));
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}
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| c9f21778 | Christian Ehringfeld | if (joinBaseClasses) {
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q.appendJoins(this->schema->getQueryBuilder()->joinBaseClasses(ptr));
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}
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| 1b167b6c | Christian Ehringfeld | QSqlQuery query = this->queryInterpreter->build(q);
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auto maps = this->convertQueryResult(query);
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| c9f21778 | Christian Ehringfeld | auto converted = this->convert(maps, EntityHelper::getClassname(ptr.data()),
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| 5baea70c | Christian Ehringfeld | false,
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| c9f21778 | Christian Ehringfeld | resolveRelations);
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| 1b167b6c | Christian Ehringfeld | return this->convertList<T>(converted);
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}
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return QList<QSharedPointer<T>>();
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}
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| c9f21778 | Christian Ehringfeld | template<class T> QList<QSharedPointer<T>> findAll(const bool resolveRelations =
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true) {
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| 6d91d381 | Christian Ehringfeld | QSharedPointer<Entity> ptr = QSharedPointer<Entity>
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| 506067a2 | Christian Ehringfeld | (EntityInstanceFactory::createInstance<T *>());
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| 6d91d381 | Christian Ehringfeld | if (ptr) {
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| f5087482 | Christian Ehringfeld | auto maps = this->findAll(ptr);
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| c9f21778 | Christian Ehringfeld | auto converted = this->convert(maps, EntityHelper::getClassname(ptr.data()),
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| 44fed106 | Christian Ehringfeld | false,
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| c9f21778 | Christian Ehringfeld | resolveRelations);
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| 506067a2 | Christian Ehringfeld | return this->convertList<T>(converted);
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| 9070a496 | Christian Ehringfeld | }
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| 506067a2 | Christian Ehringfeld | return QList<QSharedPointer<T>>();
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| 9070a496 | Christian Ehringfeld | }
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| 506067a2 | Christian Ehringfeld | template<class T> QSharedPointer<T> findById(const qint64 &id) {
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auto e = EntityInstanceFactory::createInstance<T *>();
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| f5087482 | Christian Ehringfeld | QSharedPointer<Entity> ptr = QSharedPointer<Entity>(e);
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| 506067a2 | Christian Ehringfeld | return this->findById(id, ptr).objectCast<T>();
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| a205e8a9 | Christian Ehringfeld | }
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| 9070a496 | Christian Ehringfeld | ||
| c9f21778 | Christian Ehringfeld | template<class T>
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QSharedPointer<T> findEntityByAttributes(
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| ac5cbdcf | Christian Ehringfeld | const QHash<QString, QVariant>
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| c9f21778 | Christian Ehringfeld | &attributes, const bool joinBaseClasses = false,
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const bool resolveRelations = true) {
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auto list = this->findAllEntitiesByAttributes<T>(attributes, 1, 0,
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joinBaseClasses, resolveRelations);
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| 11bbe9a6 | Christian Ehringfeld | if (list.isEmpty()) {
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| 506067a2 | Christian Ehringfeld | return QSharedPointer<T>();
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| 11bbe9a6 | Christian Ehringfeld | }
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| 506067a2 | Christian Ehringfeld | QSharedPointer<Entity> obj = list.at(0);
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return obj.objectCast<T>();
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| d84c91e7 | Christian Ehringfeld | }
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| 506067a2 | Christian Ehringfeld | template<class T> QList<QSharedPointer<T>> findAllEntitiesByAttributes(
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const QHash<QString, QVariant> &attributes =
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| c9f21778 | Christian Ehringfeld | QHash<QString, QString>(), quint64 limit = 0, quint64 offset = 0,
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bool joinBaseClasses = false, const bool resolveRelations = true) {
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| 9e44a59b | Christian Ehringfeld | QSharedPointer<Entity> e = QSharedPointer<Entity>
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| c9f21778 | Christian Ehringfeld | (EntityInstanceFactory::createInstance<T *>());
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| ac5cbdcf | Christian Ehringfeld | if (e) {
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| 9e44a59b | Christian Ehringfeld | Query query = Query(QStringList(e->getTablename()));
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| c9f21778 | Christian Ehringfeld | if (joinBaseClasses) {
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query.appendJoins(this->schema->getQueryBuilder()->joinBaseClasses(e));
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}
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| 9e44a59b | Christian Ehringfeld | query.appendWhere(this->schema->getQueryBuilder()->where(attributes));
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| 506067a2 | Christian Ehringfeld | query.setLimit(limit);
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query.setOffset(offset);
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QSqlQuery q = this->queryInterpreter->build(query);
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auto results = this->convertQueryResult(q);
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| 44fed106 | Christian Ehringfeld | auto list = this->convert(results, EntityHelper::getClassname(e.data()), false,
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| c9f21778 | Christian Ehringfeld | resolveRelations);
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| 506067a2 | Christian Ehringfeld | return this->convertList<T>(list);
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| ac5cbdcf | Christian Ehringfeld | }
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| 9e44a59b | Christian Ehringfeld | return QList<QSharedPointer<T>>();
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| 11bbe9a6 | Christian Ehringfeld | }
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| d84c91e7 | Christian Ehringfeld | ||
| 506067a2 | Christian Ehringfeld | template<class T> QList<QSharedPointer<T>> findEntitiesBySql(
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| e0e1ead8 | Christian Ehringfeld | const QString &sql) {
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| 506067a2 | Christian Ehringfeld | QSharedPointer<T> e = EntityInstanceFactory::createInstance<T *>();
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| 11bbe9a6 | Christian Ehringfeld | if (e) {
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| dc618bda | Christian Ehringfeld | QSqlQuery q = this->schema->getDatabase()->getQuery(sql);
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| 11bbe9a6 | Christian Ehringfeld | auto result = this->convertQueryResult(q);
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| 506067a2 | Christian Ehringfeld | auto converted = this->convert(result, EntityHelper::getClassname(e));
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return this->convertList<T>(converted);
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| 11bbe9a6 | Christian Ehringfeld | }
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| 506067a2 | Christian Ehringfeld | return QList<QSharedPointer<T>>();
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| d84c91e7 | Christian Ehringfeld | }
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| dc6b13b4 | Christian Ehringfeld | ||
| 11bbe9a6 | Christian Ehringfeld | template<class T> bool remove(const QList<qint64> &ids) {
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bool ok = true;
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foreach (qint64 var, ids) {
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| 506067a2 | Christian Ehringfeld | if (!this->remove<T *>(var)) {
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| 11bbe9a6 | Christian Ehringfeld | ok = false;
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break;
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}
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}
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return ok;
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}
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| d84c91e7 | Christian Ehringfeld | ||
| 11bbe9a6 | Christian Ehringfeld | template<class T> bool remove(qint64 id) {
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| 506067a2 | Christian Ehringfeld | Entity *e = EntityInstanceFactory::createInstance<T *>();
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| 9070a496 | Christian Ehringfeld | if (e) {
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QSharedPointer<Entity> ptr = QSharedPointer<Entity>(e);
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| abb9e8c5 | Christian Ehringfeld | ptr->setId(id);
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| 9070a496 | Christian Ehringfeld | return this->remove(ptr);
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}
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return false;
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| d84c91e7 | Christian Ehringfeld | }
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| 11bbe9a6 | Christian Ehringfeld | ||
| 139a9b5e | Christian Ehringfeld | template<class T> QList<QSharedPointer<T>> convertList(const
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QList<QSharedPointer<Entity>> &list) {
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QList<QSharedPointer<T>> newList = QList<QSharedPointer<T>>();
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for (int i = 0; i < list.size(); ++i) {
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newList.append(list.at(i).objectCast<T>());
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}
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return newList;
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}
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template<class T> QList<QSharedPointer<Entity>> convertToEntityList(
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const QList<QSharedPointer<T>> &list) {
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QList<QSharedPointer<Entity>> newList = QList<QSharedPointer<Entity>>();
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for (int i = 0; i < list.size(); ++i) {
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QSharedPointer<T> entity = list.at(i);
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newList.append(entity);
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}
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return newList;
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}
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| a82e4cea | Christian Ehringfeld | protected:
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| d2bebf1b | Christian Ehringfeld | bool saveObject(QSharedPointer<Entity> &entity, QList<Entity *> &mergedObjects,
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const bool persistRelations = true,
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const bool ignoreHasChanged = false, const bool validate = true,
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const bool relationsIgnoreHasChanged = false);
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bool mergeObject(QSharedPointer<Entity> &entity, QList<Entity *> &mergedObjects,
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bool withRelations,
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const bool validate, const bool relationsIgnoreHasChanged = false);
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bool createObject(QSharedPointer<Entity> &entity,
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QList<Entity *> &mergedObjects, const bool persistRelations,
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const bool checkDuplicate, const bool validate,
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const bool relationsIgnoreHasChanged = false);
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| f12670e9 | Christian Ehringfeld | void init(bool inspect, const MsgType msgType);
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| a82e4cea | Christian Ehringfeld | QList<QHash<QString, QVariant> > findAll(const QSharedPointer<Entity> &e);
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void resolveRelations(const QSharedPointer<Entity> &entity,
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const QHash<QString, QVariant> &map, const bool refresh = false);
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QHash<QString, QVariant> findByPk(qint64 id, const QSharedPointer<Entity> &e);
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void manyToOne(const QSharedPointer<Entity> &entity, const QVariant &id,
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const QMetaProperty &property, const bool refresh = false);
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void oneToMany(const QSharedPointer<Entity> &entity, const Relation &r,
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const QMetaProperty &property, const bool refresh = false);
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void manyToMany(const QSharedPointer<Entity> &entity,
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| 66704054 | Christian Ehringfeld | const QMetaProperty &property, const Relation &relation,
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const bool refresh = false);
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| a82e4cea | Christian Ehringfeld | void oneToOne(const QSharedPointer<Entity> &entity, const Relation &r,
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const QMetaProperty &property, const bool refresh = false,
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const QVariant &id = "");
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void persistManyToMany(const QSharedPointer<Entity> &entity, const Relation &r,
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| d2bebf1b | Christian Ehringfeld | QVariant &property, QList<Entity *> &mergedObjects,
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| 87739ae0 | Christian Ehringfeld | const bool ignoreHasChanged = false, const bool newItem = false);
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| a82e4cea | Christian Ehringfeld | QList<QHash<QString, QVariant> > findAllByAttributes(const
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QSharedPointer<Entity> &entity,
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bool ignoreID = false);
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QList<QHash<QString, QVariant> > findAllByAttributes(const
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QHash<QString, QVariant> &m,
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const QString &tblname,
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bool ignoreID = false);
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QSharedPointer<Entity> findById(const qint64 &id, QSharedPointer<Entity> &e,
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const bool refresh = false);
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| d2bebf1b | Christian Ehringfeld | /**
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* @brief EntityManager::savePrePersistedRelations
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* @param entity
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* @param mergedObjects
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* @throw can throw in debug mode a QString exception when the type of any Relation is wrong @see EntityManager::checkRelation
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*/
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void savePrePersistedRelations(const QSharedPointer<Entity> &entity,
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QList<Entity *> &mergedObjects, bool ignoreHasChanged = false);
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/**
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* @brief EntityManager::savePostPersistedRelations
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* @param entity
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* @param mergedObjects
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* @throw can throw in debug mode a QString exception when the type of any Relation is wrong @see EntityManager::checkRelation
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*/
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void savePostPersistedRelations(const QSharedPointer<Entity> &entity,
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| 87739ae0 | Christian Ehringfeld | QList<Entity *> &mergedObjects, bool ignoreHasChanged = false,
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bool newItem = false);
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| a82e4cea | Christian Ehringfeld | ||
QList<QSharedPointer<Entity>> saveRelationEntities(const
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| d2bebf1b | Christian Ehringfeld | QList<QSharedPointer<Entity>> &list, const Relation &r,
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QList<Entity *> &mergedObjects);
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/**
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* @brief EntityManager::persistManyToMany
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* @param entity
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* @param r
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* @param property
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* @param mergedObjects
|
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* @todo compare old values with new values if nothing has changed don't persist them
|
|||
*/
|
|||
| a82e4cea | Christian Ehringfeld | void persistMappedByRelation(const QList<QSharedPointer<Entity>> &list,
|
|
QSqlQuery &q, const QSharedPointer<Entity> &entity,
|
|||
const QSharedPointer<Entity> &ptr, const Relation &r,
|
|||
| d2bebf1b | Christian Ehringfeld | const QString &tblName, QList<Entity *> &mergedObjects);
|
|
| a82e4cea | Christian Ehringfeld | bool shouldBeSaved(QSharedPointer<Entity> &entity , const Relation &r);
|
|
void removeRelations(const QSharedPointer<Entity> &entity);
|
|||
void removeEntityList(QVariant &var);
|
|||
void removeManyToManyEntityList(const QSharedPointer<Entity> &e,
|
|||
const Relation &r, QVariant &var);
|
|||
void removeEntity(QVariant &var);
|
|||
void setNullOneToManyRelation(QVariant &var, const Relation &r);
|
|||
void setNullEntityPropertyRelation(QVariant &var, const Relation &r);
|
|||
| e8d1537c | Christian Ehringfeld | QSharedPointer<Entity> convert(const QHash<QString, QVariant> &map,
|
|
| c9f21778 | Christian Ehringfeld | const char *classname, const bool refresh = false,
|
|
const bool resolveRelations = true);
|
|||
| e8d1537c | Christian Ehringfeld | QList<QSharedPointer<Entity>> convert(QList<QHash<QString, QVariant> > maps,
|
|
| c9f21778 | Christian Ehringfeld | const char *classname, const bool refresh = false,
|
|
const bool resolveRelations = true);
|
|||
| 66704054 | Christian Ehringfeld | void missingManyToManyTable(const QString &tblName,
|
|
const QSharedPointer<Entity> &e, const Relation &r);
|
|||
| d2bebf1b | Christian Ehringfeld | /**
|
|
* @brief EntityManager::generateObjectName
|
|||
* Generates a object name with this scheme: em[anyNumber]
|
|||
* @return
|
|||
*/
|
|||
| 28d2f01a | Christian Ehringfeld | QString generateObjectName();
|
|
void appendToInstanceList();
|
|||
| a82e4cea | Christian Ehringfeld | ||
private:
|
|||
static QStringList connectionNames;
|
|||
| 28d2f01a | Christian Ehringfeld | static QHash<QString, EntityManager *> instances;
|
|
| 3938a37e | Christian Ehringfeld | QSharedPointer<Logger> logger;
|
|
| 28d2f01a | Christian Ehringfeld | QString id;
|
|
| a82e4cea | Christian Ehringfeld | QSharedPointer<Schema> schema;
|
|
static void setConnectionNames(QStringList list);
|
|||
QSharedPointer<Database> db;
|
|||
Cache cache;
|
|||
QString createConnection();
|
|||
QList<QHash<QString, QVariant> > convertQueryResult(QSqlQuery &q);
|
|||
| 6d46f506 | Christian Ehringfeld | /**
|
|
* @brief EntityManager::checkTable
|
|||
* Checks if a table has been already created, if not it will create it
|
|||
* @param entity
|
|||
* @return
|
|||
*/
|
|||
| a82e4cea | Christian Ehringfeld | bool checkTable(const QSharedPointer<Entity> &entity);
|
|
| 2ee5022f | Christian Ehringfeld | QSharedPointer<QueryInterpreter> queryInterpreter;
|
|
| a82e4cea | Christian Ehringfeld | ||
| 81c23b56 | Christian Ehringfeld | };
|
|
}
|
|||
| abb9e8c5 | Christian Ehringfeld | Q_DECLARE_METATYPE(QSharedPointer<CuteEntityManager::Entity>)
|
|
| 81c23b56 | Christian Ehringfeld | #endif // ENTITYMANAGER_H
|